Phase tracking reference signal transmission and reception method and device

Abstract

The present disclosure provides a method and device for sending and receiving a phase tracking reference signal. The method includes: a first transmission node sends a phase tracking reference signal; the frequency domain pattern of the phase tracking reference signal includes at least one of the following: the position of the physical resource block where the phase tracking reference signal is located, and the position of one or more subcarriers of the phase tracking reference signal in a physical resource block. The present disclosure solves the problem in the related art that the configuration of a distributed phase tracking reference signal cannot better solve the interference between subcarriers, and achieves the technical effect of effectively avoiding interference between subcarriers.

Description

Technical Field

[0001] The present disclosure relates to the field of communications, and in particular, to a method and device for sending and receiving a phase tracking reference signal. Background Art

[0002] High-frequency communications are easily affected by phase noise, so a certain phase tracking reference signal needs to be configured for phase compensation in different scenarios. Since the interference problem between subcarriers in the high-frequency band is also more serious, the impact of inter-subcarrier interference needs to be considered when configuring the phase tracking reference signal.

[0003] In order to reduce the impact of phase noise on the communication system, the phase tracking reference signal is configured to compensate for the impact of phase noise on the communication system. Currently, the phase tracking reference signal for a port is configured with one subcarrier position for every N (N is related to the frequency domain density of the phase tracking reference signal) physical resource blocks (PRBs), that is, a distributed phase tracking reference signal (PTRS). However, this configuration cannot better solve the problem of interference between subcarriers.

[0004] Therefore, in the related art, the problem of inter-subcarrier interference cannot be better solved by configuring a distributed phase tracking reference signal, and no effective solution has been proposed yet. Summary of the invention

[0005] The embodiments of the present disclosure provide a method and apparatus for sending and receiving a phase tracking reference signal, so as to at least solve the problem in the related art that inter-subcarrier interference cannot be better solved by configuring a distributed phase tracking reference signal.

[0006] According to one embodiment of the present disclosure, a method for sending a phase tracking reference signal is provided, comprising: a first transmission node sends a phase tracking reference signal; wherein the frequency domain pattern of the phase tracking reference signal includes at least one of the following: the position of a physical resource block where the phase tracking reference signal is located, and the position of one or more subcarriers of the phase tracking reference signal within a physical resource block.

[0007] Optionally, the frequency domain pattern is predefined by the first transmission node or configured through radio resource control signaling.

[0008] Optionally, before the first transmission node sends the phase tracking reference signal, it also includes: the first transmission node configuring a frequency domain pattern of the phase tracking reference signal.

[0009] Optionally, the frequency domain pattern of the phase tracking reference signal configured by the first transmission node includes: the first transmission node configures the starting position of the physical resource block where the phase tracking reference signal is located to be the first physical resource block of the allocated bandwidth.

[0010] Optionally, the position of the physical resource block where the phase tracking reference signal is located is determined by at least one of the following parameters: a cell radio network temporary identifier, a cell identifier, and an identifier used for sequence initialization.

[0011] Optionally, the position of one or more subcarriers of the phase tracking reference signal within a physical resource block is determined by at least one of the following parameters: a cell radio network temporary identifier, a cell identifier, an identifier for sequence initialization, and a port number of a demodulation reference signal.

[0012] Optionally, the frequency domain pattern of the phase tracking reference signal configured by the first transmission node includes: the first transmission node configures the starting position of multiple subcarriers of the phase tracking reference signal within a physical resource block to be on the subcarrier with the lowest sequence number.

[0013] Optionally, the method also includes: the first transmission node instructs the sending of the phase tracking reference signal according to the frequency domain pattern by sending at least one of the following signaling: wireless resource control signaling, media access control unit signaling, and downlink control information signaling.

[0014] Optionally, the method also includes: the first transmission node indicates the number of subcarriers sent by the phase tracking reference signal in a physical resource block by sending at least one of the following signaling: wireless resource control signaling, media access control unit signaling, and downlink control information signaling.

[0015] Optionally, the number of subcarriers occupied in one or more demodulation reference signal groups sent by the first transmission node is the maximum number of subcarriers sent by the phase tracking reference signal in one physical resource block.

[0016] Optionally, the method further includes: the first transmission node indicating the type of the frequency domain pattern and / or the content included in the frequency domain pattern according to the configured port number of the demodulation reference signal.

[0017] Optionally, the method further includes: the first transmitting node indicating the type of the frequency domain pattern and / or the content included in the frequency domain pattern according to a configured demodulation reference signal sequence.

[0018] Optionally, the method further includes: the first transmitting node indicating the type of the frequency domain pattern and / or the content included in the frequency domain pattern through the type of a demodulation reference signal.

[0019] Optionally, the type of the frequency domain pattern includes: a distributed frequency domain pattern, a centralized frequency domain pattern, wherein the type of the frequency domain pattern is selected through at least one of the following information: a first correspondence between the frequency domain pattern and a threshold of a frequency domain segment configured by the first transmission node, and a second correspondence between the frequency domain pattern and a threshold of a subcarrier interval configured by the first transmission node.

[0020] Optionally, the first corresponding relationship and / or the second corresponding relationship is predefined by the first transmission node or sent by radio resource control signaling notification.

[0021] Optionally, the first transmitting node configures different physical resource block positions for the phase tracking reference signal at different times.

[0022] Optionally, the first transmission node determines the physical resource block position of the phase tracking reference signal according to the frequency domain resource position allocated to the second transmission node.

[0023] Optionally, there is a third corresponding relationship between the physical resource block position of the phase tracking reference signal and the bandwidth allocated by the first transmission node.

[0024] Optionally, the third corresponding relationship is to configure the physical resource block position of the phase tracking reference signal to be a middle position of the bandwidth allocated by the first transmission node to the second transmission node.

[0025] Optionally, the method also includes: the first transmission node determines at least one of the following parameters of the phase tracking reference signal according to the capability of the second transmission node: physical resource block position, the number of subcarriers within a physical resource block, and the subcarrier position within a physical resource block.

[0026] According to another embodiment of the present disclosure, a method for receiving a phase tracking reference signal is provided, comprising: a second transmission node receives a phase tracking reference signal sent by a first transmission node; wherein the frequency domain pattern of the phase tracking reference signal includes at least one of the following: the position of a physical resource block where the phase tracking reference signal is located, and the position of one or more subcarriers of the phase tracking reference signal within a physical resource block.

[0027] Optionally, the frequency domain pattern is predefined by the first transmission node or configured through radio resource control signaling.

[0028] Optionally, the position of the physical resource block where the phase tracking reference signal is located is determined by at least one of the following parameters: a cell radio network temporary identifier, a cell identifier, and an identifier used for sequence initialization.

[0029] Optionally, the position of one or more subcarriers of the phase tracking reference signal within a physical resource block is determined by at least one of the following parameters: a cell radio network temporary identifier, a cell identifier, an identifier for sequence initialization, and a port number of a demodulation reference signal.

[0030] According to another embodiment of the present disclosure, a phase tracking reference signal sending device is provided, which is applied to a first transmission node and includes: a sending module for sending a phase tracking reference signal; wherein the frequency domain pattern of the phase tracking reference signal includes at least one of the following: the position of the physical resource block where the phase tracking reference signal is located, and the position of one or more subcarriers of the phase tracking reference signal in a physical resource block.

[0031] Optionally, the frequency domain pattern is predefined by the first transmission node or configured through radio resource control signaling.

[0032] Optionally, before the first transmission node sends a phase tracking reference signal, the sending device is further used to configure a frequency domain pattern of the phase tracking reference signal.

[0033] Optionally, the sending device is further used to configure the starting position of the physical resource block where the phase tracking reference signal is located to be the first physical resource block of the allocated bandwidth.

[0034] Optionally, the position of the physical resource block where the phase tracking reference signal is located is determined by at least one of the following parameters: a cell radio network temporary identifier, a cell identifier, and an identifier used for sequence initialization.

[0035] Optionally, the position of one or more subcarriers of the phase tracking reference signal within a physical resource block is determined by at least one of the following parameters: a cell radio network temporary identifier, a cell identifier, an identifier for sequence initialization, and a port number of a demodulation reference signal.

[0036] Optionally, the transmitting device is further used to configure the starting position of multiple subcarriers of the phase tracking reference signal within a physical resource block to be on the subcarrier with the lowest sequence number.

[0037] Optionally, the sending device is further used to instruct the sending of the phase tracking reference signal according to the frequency domain pattern by sending at least one of the following signaling: wireless resource control signaling, media access control unit signaling, and downlink control information signaling.

[0038] Optionally, the sending device is also used to indicate the number of subcarriers sent by the phase tracking reference signal in a physical resource block by sending at least one of the following signaling: wireless resource control signaling, media access control unit signaling, and downlink control information signaling.

[0039] Optionally, the number of subcarriers occupied in one or more demodulation reference signal groups sent by the first transmission node is the maximum number of subcarriers sent by the phase tracking reference signal in one physical resource block.

[0040] Optionally, the sending device is further used to indicate the type of the frequency domain pattern and / or the content included in the frequency domain pattern according to the configured port number of the demodulation reference signal.

[0041] Optionally, the sending device is further used to indicate the type of the frequency domain pattern and / or the content included in the frequency domain pattern according to a configured demodulation reference signal sequence.

[0042] Optionally, the sending device is further used to indicate the type of the frequency domain pattern and / or the content included in the frequency domain pattern through the type of a demodulation reference signal.

[0043] Optionally, the type of the frequency domain pattern includes: a distributed frequency domain pattern, a centralized frequency domain pattern, wherein the type of the frequency domain pattern is selected through at least one of the following information: a first correspondence between the frequency domain pattern and a threshold of a frequency domain segment configured by the first transmission node, and a second correspondence between the frequency domain pattern and a threshold of a subcarrier interval configured by the first transmission node.

[0044] Optionally, the first corresponding relationship and / or the second corresponding relationship is predefined by the first transmission node or sent by radio resource control signaling notification.

[0045] Optionally, the first transmitting node configures different physical resource block positions for the phase tracking reference signal at different times.

[0046] Optionally, the sending device is further used to determine the physical resource block position of the phase tracking reference signal according to the frequency domain resource position allocated to the second transmission node.

[0047] Optionally, there is a third corresponding relationship between the physical resource block position of the phase tracking reference signal and the bandwidth allocated by the first transmission node.

[0048] Optionally, the third corresponding relationship is to configure the physical resource block position of the phase tracking reference signal to be a middle position of the bandwidth allocated by the first transmission node to the second transmission node.

[0049] Optionally, the sending device is also used to determine at least one of the following parameters of the phase tracking reference signal according to the capability of the second transmission node: physical resource block position, the number of subcarriers within a physical resource block, and the subcarrier position within a physical resource block.

[0050] According to another embodiment of the present disclosure, a phase tracking reference signal receiving device is provided, which is applied to a second transmission node and includes: a receiving module for receiving a phase tracking reference signal sent by a first transmission node; wherein the frequency domain pattern of the phase tracking reference signal includes at least one of the following: the position of the physical resource block where the phase tracking reference signal is located, and the position of one or more subcarriers of the phase tracking reference signal in a physical resource block.

[0051] Optionally, the frequency domain pattern is predefined by the first transmission node or configured through radio resource RRC signaling.

[0052] According to another embodiment of the present disclosure, a storage medium is provided, in which a computer program is stored, wherein the computer program is configured to execute the steps of any one of the above method embodiments when running.

[0053] According to another embodiment of the present disclosure, an electronic device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0054] Through the present disclosure, the first transmission node sends a phase tracking reference signal; wherein the frequency domain pattern of the phase tracking reference signal includes at least one of the following: the position of the physical resource block where the phase tracking reference signal is located, and the position of one or more subcarriers of the phase tracking reference signal in a physical resource block. In other words, the first transmission node configures the position of the physical resource block where the phase tracking reference signal is located and the specific position of the subcarrier, rather than configuring 1 subcarrier position for every N (N is related to the frequency domain density of the phase tracking reference signal) physical resource blocks PRB for the phase tracking reference signal of one port, thereby solving the problem in the related art that the configuration of distributed phase tracking reference signals cannot better solve the interference between subcarriers, and achieving the technical effect of effectively avoiding interference between subcarriers. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure. In the drawings:

[0056] Figure 1 is a flow chart of a method for sending a phase tracking reference signal according to an embodiment of the present disclosure;

[0057] Figure 2 is a flow chart of a method for receiving a phase tracking reference signal according to an embodiment of the present disclosure;

[0058] Figure 3 is a phase tracking reference signal pattern according to an optional embodiment of the present disclosure;

[0059] Figure 4 is a phase tracking reference signal pattern (I) according to an optional embodiment of the present disclosure;

[0060] Figure 5 is a phase tracking reference signal pattern (II) according to an optional embodiment of the present disclosure;

[0061] Figure 6 is a phase tracking reference signal pattern (three) according to an optional embodiment of the present disclosure;

[0062] Figure 7 is a phase tracking reference signal pattern (iv) according to an optional embodiment of the present disclosure;

[0063] Figure 8 is a phase tracking reference signal pattern (V) according to an optional embodiment of the present disclosure;

[0064] Fig. 9 is a phase tracking reference signal pattern (six) according to an optional embodiment of the present disclosure;

[0065] Fig.10 is a phase tracking reference signal pattern (VII) according to an optional embodiment of the present disclosure;

[0066] Fig.11 is a phase tracking reference signal pattern (eight) according to an optional embodiment of the present disclosure;

[0067] Fig.12 is a phase tracking reference signal pattern (IX) according to an optional embodiment of the present disclosure;

[0068] Fig.13 is a phase tracking reference signal pattern (ten) according to an optional embodiment of the present disclosure;

[0069] Fig.14 is a structural block diagram of a device for transmitting a phase tracking reference signal according to an embodiment of the present disclosure;

[0070] Fig.15 It is a structural block diagram of a phase tracking reference signal receiving device according to an embodiment of the present disclosure.

[0071] Specific embodiments of the present disclosure

[0072] The present disclosure will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0073] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0074] Example 1

[0075] The present disclosure provides a method for sending a phase tracking reference signal in this embodiment. Figure 1 is a flow chart of a method for sending a phase tracking reference signal according to an embodiment of the present disclosure, such as Figure 1 As shown, the process includes the following steps:

[0076] In step S102, the first transmission node sends a phase tracking reference signal; wherein the frequency domain pattern of the phase tracking reference signal includes at least one of the following: the position of the physical resource block where the phase tracking reference signal is located, and the position of one or more subcarriers of the phase tracking reference signal in a physical resource block.

[0077] Optionally, in this embodiment, the first transmission node includes but is not limited to: a base station and a terminal.

[0078] Through the above step S102, the first transmission node sends a phase tracking reference signal; wherein the frequency domain pattern of the phase tracking reference signal includes at least one of the following: the position of the physical resource block where the phase tracking reference signal is located, and the position of one or more subcarriers of the phase tracking reference signal in a physical resource block. In other words, the first transmission node configures the position of the physical resource block where the phase tracking reference signal is located and the specific position of the subcarrier, instead of configuring 1 subcarrier position for every N (N is related to the frequency domain density of the phase tracking reference signal) physical resource blocks PRB for the phase tracking reference signal of one port, thereby solving the problem in the related art that the configuration of distributed phase tracking reference signals cannot better solve the interference between subcarriers, and achieving the technical effect of effectively avoiding interference between subcarriers.

[0079] In an optional implementation manner, the frequency domain pattern is predefined by the first transmission node or configured through Radio Resource Control (RRC) signaling.

[0080] Optionally, before the first transmission node sends the phase tracking reference signal, the method further includes the following steps:

[0081] Step S11: The first transmitting node configures a frequency domain pattern of the phase tracking reference signal.

[0082] Optionally, the first transmission node configures the frequency domain pattern of the phase tracking reference signal including: the first transmission node configures the starting position of the physical resource block where the phase tracking reference signal is located to be the first physical resource block of the allocated bandwidth.

[0083] Optionally, the position of the physical resource block where the phase tracking reference signal is located is determined by at least one of the following parameters: a cell radio network temporary identifier (Cell Radio Network Temporary identifier, referred to as C-RNTI), a cell identifier CELL-ID, and an identifier used for sequence initialization.

[0084] Optionally, the position of one or more subcarriers of the phase tracking reference signal within a physical resource block is determined by at least one of the following parameters: C-RNTI, CELL-ID, an identifier for sequence initialization, and a port number of a demodulation reference signal (DMRS).

[0085] In an optional implementation manner, the first transmitting node configuring the frequency domain pattern of the phase tracking reference signal comprises the following steps:

[0086] In step S21, the first transmitting node configures the starting position of the phase tracking reference signal of multiple subcarriers in a physical resource block to be on the subcarrier with the lowest sequence number.

[0087] Optionally, the first transmission node indicates to send the phase tracking reference signal according to the frequency domain pattern by sending at least one of the following signaling: radio resource control RRC signaling, media access control unit MAC CE signaling, and downlink control information (Downlink Control information, referred to as DCI) signaling.

[0088] In an optional implementation, the first transmission node indicates the number of subcarriers in which the phase tracking reference signal is sent in a physical resource block by sending at least one of the following signaling: wireless resource control signaling, media access control unit signaling, and downlink control information signaling.

[0089] Optionally, the number of subcarriers occupied in one or more demodulation reference signal groups sent by the first transmission node is the maximum number of subcarriers sent by the phase tracking reference signal in one physical resource block.

[0090] Optionally, the first transmission node may indicate the type of the frequency domain pattern and / or the contents included in the frequency domain pattern according to the number of ports of the configured demodulation reference signal; or, the first transmission node may indicate the type of the frequency domain pattern and / or the contents included in the frequency domain pattern according to the sequence of the configured demodulation reference signal; or, the first transmission node may indicate the type of the frequency domain pattern and / or the contents included in the frequency domain pattern through the type of the demodulation reference signal.

[0091] By indicating the type of the frequency domain pattern and / or the content included in the frequency domain pattern by the first transmission node, the problem in the related technology that the interference between subcarriers cannot be better solved by configuring a distributed phase tracking reference signal is further solved, thereby achieving the technical effect of effectively avoiding interference between subcarriers.

[0092] Optionally, the types of the above-mentioned frequency domain patterns include: a distributed frequency domain pattern, a centralized frequency domain pattern, wherein the type of the frequency domain pattern is selected through at least one of the following information: a first correspondence between the frequency domain pattern and a threshold of the frequency domain segment configured by the first transmission node, and a second correspondence between the frequency domain pattern and a threshold of the interval of subcarriers configured by the first transmission node.

[0093] Optionally, the first corresponding relationship and / or the second corresponding relationship is predefined by the first transmission node or notified by sending a radio resource control signaling.

[0094] In an optional implementation, the first transmitting node configures different physical resource block positions for the phase tracking reference signal at different times.

[0095] Optionally, the first transmission node determines the physical resource block position of the phase tracking reference signal according to the frequency domain resource position allocated to the second transmission node.

[0096] Optionally, there is a third correspondence between the physical resource block position of the phase tracking reference signal and the bandwidth allocated by the first transmission node. The third correspondence may be to configure the physical resource block position of the phase tracking reference signal as the middle position of the bandwidth allocated by the first transmission node to the second transmission node.

[0097] In an optional embodiment, the first transmission node may determine at least one of the following parameters of the phase tracking reference signal according to the capability of the second transmission node: physical resource block position, number of subcarriers within a physical resource block, and subcarrier position within a physical resource block.

[0098] In this embodiment, a method for receiving a phase tracking reference signal is also provided. Figure 2 is a flow chart of a method for receiving a phase tracking reference signal according to an embodiment of the present disclosure, such as Figure 2 As shown, the process includes the following steps:

[0099] In step S202, the second transmission node receives a phase tracking reference signal sent by the first transmission node; wherein the frequency domain pattern of the phase tracking reference signal includes at least one of the following: the position of the physical resource block where the phase tracking reference signal is located, and the position of one or more subcarriers of the phase tracking reference signal in a physical resource block.

[0100] Optionally, in this embodiment, the second transmission node includes but is not limited to: a base station and a terminal.

[0101] Through the above step S202, the second transmission node receives the frequency domain pattern of the phase tracking reference signal sent by the first transmission node, wherein the frequency domain pattern includes at least one of the following: the position of the physical resource block where the phase tracking reference signal is located, and the position of one or more subcarriers of the phase tracking reference signal in a physical resource block. In other words, the first transmission node configures the position of the physical resource block where the phase tracking reference signal is located and the specific position of the subcarrier, instead of configuring 1 subcarrier position for every N (N is related to the frequency domain density of the phase tracking reference signal) physical resource blocks PRB for the phase tracking reference signal of one port, thereby solving the problem in the related art that the configuration of distributed phase tracking reference signals cannot better solve the interference between subcarriers, and achieving the technical effect of effectively avoiding interference between subcarriers.

[0102] Optionally, the frequency domain pattern is predefined by the first transmission node or configured through radio resource control signaling.

[0103] In an optional embodiment, the position of the physical resource block where the phase tracking reference signal is located is determined by at least one of the following parameters: a cell wireless network temporary identifier, a cell identifier, and an identifier for sequence initialization; the position of one or more subcarriers of the phase tracking reference signal within a physical resource block is determined by at least one of the following parameters: a cell wireless network temporary identifier, a cell identifier, an identifier for sequence initialization, and a port number of a demodulation reference signal.

[0104] The present embodiment is described below with reference to optional embodiments.

[0105] It should be noted that, in the following optional embodiments, the first transmission node is described by taking a base station as an example, and the second transmission node is described by taking a terminal as an example.

[0106] Optional embodiment 1

[0107] The base station configures the frequency domain pattern of the phase tracking reference signal through signaling instructions, where the pattern is a mapping relationship between the position of the physical resource block where the phase tracking reference signal is located and the number and position of subcarriers of the phase tracking reference signal port in a physical resource block.

[0108] The configuration signaling indicates whether the phase tracking reference signal is configured as a distributed pattern or a centralized pattern. The centralized pattern can better overcome the influence of inter-subcarrier interference. This configuration signaling can be RRC signaling or MAC CE or DCI signaling. The signaling is 1-bit information, which mainly indicates the enabling status of the centralized phase tracking reference signal.

[0109] As the frequency increases, the interference between subcarriers will usually become more serious. Similarly, in the same frequency domain, as the subcarrier spacing decreases, the interference between subcarriers will also become more serious. Therefore, it is necessary to configure a centralized phase tracking reference signal that can better solve the problem of interference between subcarriers.

[0110] The centralized phase tracking reference signal is related to the frequency domain segment or subcarrier spacing. That is, when the frequency domain segment is higher, the centralized phase tracking reference signal is configured. For example, for a frequency of 10GHz, since the frequency domain segment is not very high, the interference between subcarriers is not very serious at this time, and a distributed phase tracking reference signal can be configured at this time. For a frequency of 100GHz or higher, since the frequency domain segment is higher, the interference between subcarriers may have a greater impact, so a centralized phase tracking reference signal can be configured at this time;

[0111] Or for the frequency domain segment with the same frequency, when the subcarrier spacing is small, it is more susceptible to the interference between subcarriers. At this time, a centralized phase tracking reference signal should be configured; when the subcarrier spacing is large, the influence of the interference between subcarriers is relatively small. At this time, a distributed phase tracking reference signal can be configured; the pattern of the centralized phase tracking reference signal is as follows Figure 3 shown.

[0112] Optional embodiment 2

[0113] The frequency domain position of the centralized phase tracking reference signal is indicated by at least one of the following information: C-RNTI, ID for sequence initialization, Cell-ID, and related DMRS port number. In the Long Term Evolution (LTE), the ID for sequence initialization is represented by SCID. The SCIDs described below all represent an ID for sequence initialization.

[0114] The frequency domain position of the phase tracking reference signal is mainly reflected in the RB position where the phase tracking reference signal is located or the subcarrier position where the phase tracking reference signal is located.

[0115] In the MU-MIMO scenario, if the phase tracking reference signals between different UEs are configured at the same subcarrier position, interference may occur. This impact also exists for centralized phase tracking reference signals. Therefore, in the multi-user MIMO scenario, orthogonal centralized phase tracking reference signals can be configured to effectively avoid this situation.

[0116] When the orthogonality of centralized phase tracking reference signals between multiple users is not configured, in order to avoid interference between reference signals of multiple users, C-RNTI can be used to distinguish the RB level of phase tracking reference signals between different users. For example, in a scenario with two users, if the phase tracking reference signals between the two users are not distinguished in terms of position, it is easy for the two users to have phase tracking reference signals configured in the same frequency domain position, causing interference. The number of subcarriers occupied by centralized phase tracking reference signals in a PRB is greater than that of distributed phase tracking reference signals. Therefore, the frequency domain positions should be distinguished for different users at the PRB level, such as Figure 4 As shown. According to different UE-ID (C-RNTI), the phase tracking reference signals of different users in the MU-MIMO scenario are configured on different RBs. Since the block size of the phase tracking reference signal configured by each user in a certain PRB may be different, that is, UE1 may configure two subcarriers for a certain phase tracking reference signal, and UE2 may configure four subcarriers for a certain behavior tracking reference signal, so according to different C-RNTIs, the phase tracking reference signal of UE1 is configured on PRB0, and the phase tracking reference signal of UE2 is configured on PRB1.

[0117] Phase tracking reference signals configured from different base stations may also interfere with each other. Similar to the above principle, phase tracking reference signals sent by different base stations can be configured on different PRBs according to different Cell-IDs.

[0118] The configuration of the phase tracking reference signal at different subcarrier positions within a PRB also needs to distinguish between different base stations or different users.

[0119] by Figure 4 For example, at this time, according to the different UE-IDs, the phase tracking reference signals for different UEs are configured on different PRBs. At this time, for different base stations, the phase tracking reference signals can be configured on different subcarriers of the same PRB, such as Figure 5As shown. The phase tracking reference signals configured from the two base stations are configured to different subcarrier positions according to different cell-IDs. The phase tracking reference signal configured by base station 1 is configured to subcarrier 0 and subcarrier 1, and the phase tracking reference signal configured by base station 2 is configured to subcarrier 6 and subcarrier 7. In this way, the phase tracking reference signals of different UEs are configured to different PRBs according to the UE-ID, and the phase tracking reference signals from different base stations are configured to different subcarriers of the same PRB by using different CELL-IDs, so that interference between the phase tracking reference signals of different users and different base stations can be successfully avoided.

[0120] Similarly, if the cell-ID is used as described above to configure different PRB positions to place the phase tracking reference signals from different base stations, and then the UE-ID is used to configure different subcarrier positions in the same PRB to place the phase tracking reference signals of different users, interference between the phase tracking reference signals from different base stations and different users can also be avoided.

[0121] Since the centralized phase tracking reference signal itself is designed to better deal with the situation of large interference between subcarriers, and since the number of subcarriers occupied by the centralized phase tracking reference signal in one PRB is different, it is possible that the centralized phase tracking reference signal sent by a base station to a user occupies a large number of subcarriers in one PRB. Therefore, in this scenario, the function of avoiding interference between phase tracking reference signals cannot be completed by using parameters such as cell-id, UE-ID or SCID in one PRB. Therefore, optionally, under normal circumstances, DMRS from different base stations generally do not satisfy the QCL relationship. Therefore, the phase tracking reference signals configured by different base stations are associated with different DMRS groups. Therefore, at this time, there is no need to use cell-ID to avoid interference with the phase tracking reference signal. Only different DMRS port numbers can be used to distinguish the subcarrier positions of different phase tracking reference signals in the frequency domain. Such as Figure 6 As shown:

[0122] Or for DMRS groups of different base stations with QCL relationship, the phase tracking reference signal is configured with a larger block of centralized phase tracking reference signal due to the interference relationship between subcarriers, and the PRB level configuration can be performed using UE-ID+CELL-ID. Figure 7 As shown: the phase tracking reference signals sent by base station 1 to UE1 and UE2 are configured on PRB0 and PRB1 respectively, and the phase tracking reference signals sent by base station 2 to UE1 and UE2 are configured on PRB3 and PRB4 respectively. The distinction of SCID is similar to the distinction of CELL-ID.

[0123] Optional embodiment 3

[0124] Multiple levels of centralized phase tracking reference signals are configured, where the set size of the phase tracking reference signals is related to the frequency domain segment or the subcarrier spacing or a combination of the two.

[0125] The set size is the number of subcarriers occupied by the phase tracking reference signal of the same port in a physical resource block. Assuming that the maximum block size of the centralized phase tracking reference signal is X at this time, different frequency domain segments can be configured with centralized phase tracking reference signals of different block sizes due to the different severity of interference between subcarriers. The threshold of M frequency domain points is designed, and the frequency domain segment between every two frequency domain points corresponds to phase tracking reference signals of different block sizes. As the frequency increases, the block of the centralized phase tracking reference signal becomes larger; conversely, it becomes smaller, as shown in Table 1:

[0126] Table 1 Correspondence between the phase tracking reference signal set size and frequency domain segment

[0127] Frequency domain segment Phase tracking reference signal set size f<Fthr1 1 Fthr1≦f≦Fthr2 2 ... ... f≧Fthrm X

[0128] At the same time, there is a certain relationship between the set size of the phase tracking reference signal and the subcarrier spacing. Assuming that for the same frequency domain segment, different subcarrier spacings may have different inter-subcarrier interference effects. When the subcarrier spacing is small, such as a 15kHz subcarrier spacing, the inter-subcarrier interference is relatively large, and when the subcarrier spacing is large, such as a 120kHz subcarrier spacing, the inter-subcarrier interference is relatively small. Therefore, different set sizes of phase tracking reference signals can be configured for different subcarrier spacings. Specific examples for more situations are shown in Table 2:

[0129] Table 2 Correspondence between the phase tracking reference signal set size and frequency domain segment

[0130] Frequency domain segment Phase tracking reference signal set size sc<SCthr1 Y SCthr1≤sc≤SCthr2 Y-1 ... ... Sc≥SCthrm 1

[0131] The above two tables can exist independently or be used in combination according to certain relationships.

[0132] Optional Embodiment 4

[0133] The size of the phase tracking reference signal set and the frequency domain position of the phase tracking reference signal in the set are related to the type of the demodulation reference signal. The type of the demodulation reference signal is different patterns. For example, the current DMRS supports two types: type 1 and type 2.

[0134] There is a certain correspondence between the phase tracking reference signal and the demodulation reference signal, that is, for a demodulation reference signal port or a port set or a configuration between demodulation reference signal port sets with a quasi-co-location relationship. For different types of demodulation reference signals, the size of the phase tracking reference signal set and the position of the phase tracking reference signal within the set may also be different.

[0135] For example, for the downlink type 2 demodulation reference signal, Figure 8 The demodulation reference signal ports p0 and p1 shown are the same demodulation reference signal port set (DMRS group). If the centralized phase tracking reference signal set is configured as 2, that is, two frequency domain positions are configured in one physical resource block (PRB) to place the phase tracking reference signal, the pattern of the phase tracking reference signal is as follows: Figure 8 shown.

[0136] For the demodulation reference signal of type 1, such as Fig. 9 As shown, the demodulation reference signal port p0 / p1 occupying the first subcarrier position and the demodulation reference signal port p2 / p3 occupying the second subcarrier position are two different demodulation reference signal port groups (DMRS groups). If the two groups satisfy the QCL (quaci co-location) relationship at this time, that is, the two DMRS groups share a PTRS (phase tracking reference signal) port, if the localized pattern (centralized phase tracking reference signal) is configured at this time, it is also possible to configure the two adjacent subcarriers (that is, the first subcarrier configured with DRMS ​​port p0 / p1 and the second subcarrier configured with DMRS port p2 / p3) as a centralized phase tracking reference signal, and the set size is 2; but if the two DMRS groups do not satisfy the QCL relationship, that is, the two DMRS groups cannot share the same PTRS, that is, the PTRS configured for DMRS port p0 / p1 cannot be placed on the subcarrier where DMRS port p2 / p3 is located. Therefore, if the centralized phase tracking reference signal is configured at this time, and the number of sets (or chunks) of phase tracking reference signals is 2, as shown Fig. 9 As shown, two phase tracking reference signals can be configured at the subcarrier position where the DMRS port p0 / p1 is located.

[0137] For the uplink type 2 demodulation reference signal, when there is no DMRS group, the PTRS corresponding to the DMRS port p0 cannot be configured on the subcarrier where p1 is located. Therefore, if a centralized phase tracking reference signal needs to be configured, multiple phase tracking reference signals need to be configured on non-adjacent subcarriers.

[0138] Optionally, for type 1 structure and uplink type 2 DMRS, multiple PTRS configured for the same DMRS port or DMRS group cannot be placed on adjacent subcarriers. Therefore, it can be stipulated that the above two DMRS do not support the configuration of centralized phase tracking reference signals. For the same reason, type 1 DMRS does not support a maximum of 8 ports, while type 2 DMRS supports a maximum of 12 ports. Therefore, when the number of DMRS ports is greater than 8 ports, type 2 DMRS is configured, and centralized phase tracking reference signals are not supported. Similarly, the sequences of the two types of DMRS are different, which is first reflected in the different lengths of the two sequences. Therefore, the enabling of centralized phase tracking reference signals can be indicated based on the difference between the two sequences. Therefore, at this time, different types and / or content configurations of PTRS can be indicated based on the configured DMRS type, the number of DMRS ports, or the DMRS sequence.

[0139] Optionally, when the interference between subcarriers in the communication system is large, a type 2 DMRS is configured, and a corresponding centralized phase tracking reference signal is configured for the type 2 DMRS.

[0140] Since one PTRS port corresponds to one DMRS group or two DMRS groups with a QCL relationship, the number of subcarriers occupied by one PTRS port in one PRB needs to be related to the number of ports in the DMRS group or two DMRS groups with a QCL relationship or the number of occupied frequency domain subcarriers. That is, when one PTRS port corresponds to one DMRSgroup, the maximum number of subcarriers that can be allocated to the PTRS port in one PRB is the number of subcarriers occupied by all DMRSports in the DMRSgroup. Similarly, when one PTRS port corresponds to two DMRS groups with a QCL relationship, the maximum number of allocated subcarriers for one PTRS port in one PRB is the number of subcarriers occupied by all DMRS ports in the two DMRS groups. Therefore, the number of DMRS ports or the number of subcarriers occupied by the ports determines the maximum number of subcarriers for PTRS in one PRB and the number and position of PRBs for allocating PTRS in the entire bandwidth.

[0141] Optional embodiment 5

[0142] The frequency domain position of the centralized phase tracking reference signal is fixed on the first RB of the allocated bandwidth and occupies the X subcarriers with the lowest sequence number in the PRB, where X is the block size of the centralized phase tracking reference signal.

[0143] Assume that the block size of the centralized phase tracking reference signal is 2, that is, two subcarriers are configured for one PTRS port in one PRB. And these two subcarriers are configured on the two subcarriers with the lowest sequence numbers corresponding to the DMRS port in the relevant DMRS group corresponding to the PTRS. Figure 8 As shown. At this time, the DMRS ports p0 and p1 are in a QCL relationship, and the configured PTRS corresponds to the DMRS group. For the PTRS occupying two subcarriers, it can be configured at the positions of subcarrier 0 and subcarrier 1. For the DMRS configuration of type 1, the PTRS corresponding to the DMRS group can be configured at the positions of subcarrier 0 and subcarrier 2, as shown. Fig. 9 As shown; for the uplink type2 structure DMRS, and there is no QCL relationship between the DMRS port p0 and the port p1, the PTRS corresponding to the DMRS port p0 needs to be configured at the positions of subcarrier 0 and subcarrier 6, such as Fig.10 shown.

[0144] Optionally, if the PTRS is placed on the subcarrier with the highest sequence number, the principle is the same. Optionally, the PTRS is placed on the PRB with the highest sequence number or on a predefined PRB obtained according to the allocated bandwidth. The principle is the same. For example, the bandwidth allocated by the base station is 100 PRBs, and the starting PRB position of the predefined centralized phase tracking reference signal is the middle position, that is, for the bandwidth of P PRBs, the selected position is

[0145] Optionally, based on the number of subcarriers occupied by a PTRS port in each PRB of the phase tracking reference signal configured by the base station and the bandwidth allocated to the user, the total number of PRBs F occupied by the PTRS port can be determined. Therefore, the PRB position of the middle part of the allocated bandwidth of the user can be configured to the corresponding PRB according to the set frequency domain density of the PTRS.

[0146] Optional Embodiment 6

[0147] The physical resource block positions of the phase tracking reference signals configured by the base station on different time domain resources and / or frequency domain resources are different.

[0148] When the base station is configured to use a centralized phase tracking reference signal, especially when the phase tracking reference signal of one port occupies a large number of subcarriers in a physical resource block, it may not be possible to distinguish the positions of PTRSs of different base stations or different terminals in a physical resource block, which may cause interference between PTRSs. Therefore, it is necessary to configure different physical resource block positions by the base station to avoid interference between PTRSs. The PTRSs configured by the base station are configured at different PRB positions at different times. For example, Fig.11 As shown in the figure, at different times, the PRB position of PTRS is different. In the first subframe, PTRS is configured at the position of PRB0, and in the second subframe, PTRS is configured at the position of PRB1. At this time, in order to avoid interference between PTRSs of different base stations or different terminals. Therefore, the physical resource block positions of PTRSs allocated by the base station to different terminals at different times or PTRSs allocated by different base stations to the same terminal are different at different times. For example, the physical resource block position of PTRS allocated by the base station to terminal 1 is as follows: Fig.11 As shown, the physical resource block position of the PTRS allocated by the base station to terminal 2 is as follows Fig.12 As shown, at this time, the PTRS of terminal 2 is configured on PRB2, which effectively avoids interference between different PTRSs.

[0149] The base station needs to allocate the physical resource block location of the PTRS to the terminal according to the different frequency domain locations occupied by the terminal. If the base station is configured with 8 PRBs of physical resources, according to the previously predetermined physical resource block location of the PTRS, for example, assuming that a PTRS is configured to be placed every 2 PRBs, if the default PTRS initial position is the first PRB, then the PTRS is configured to be placed every 2 PRBs starting from PRB0. If the bandwidth BWP (Bandwidthpart) used by the terminal at this time is some PRBs in the middle, such as the 4th to 7th PRBs, the PTRS configured outside the bandwidth used by the terminal cannot compensate for the phase noise of the terminal, and causes the corresponding PTRS physical resource block location to be different due to the different frequency domain locations of the bandwidth used by the terminal. Therefore, the base station needs to determine the physical resource block location of the PTRS configured for the terminal according to the frequency domain location used by the terminal. Fig.13 shown.

[0150] Optional Embodiment 7

[0151] The base station determines one of the following parameters of the phase tracking reference signal according to the terminal capability: the physical resource block position, the number and position of subcarriers in one physical resource block.

[0152] Each terminal has different capabilities and supports different PTRS configurations. For example, terminal 1 cannot support more than 2 subcarriers for the same PTRS port in 1 PRB, so terminal 1 can only be configured with 1 subcarrier or 2 subcarriers. This also determines the number of physical resource blocks for the terminal. If there are some terminals that cannot perform too much RRC signaling configuration, they can only use the predefined PTRS physical resource block position.

[0153] Therefore, the base station needs to select the type of PTRS or the number and location of carriers and the configuration of the location of physical resource blocks according to the capabilities of different terminals.

[0154] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present disclosure, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present disclosure.

[0155] Example 2

[0156] In this embodiment, a configuration device for a reference signal is also provided, and the device is used to implement the above-mentioned embodiments and preferred implementation modes, and the descriptions that have been made are not repeated here. As used below, the term "module" can implement a combination of software and / or hardware of a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0157] Fig.14 is a structural block diagram of a device for transmitting a phase tracking reference signal according to an embodiment of the present disclosure, such as Fig.14 As shown, the device comprises:

[0158] 1) A sending module 142, configured to send a phase tracking reference signal;

[0159] The frequency domain pattern of the phase tracking reference signal includes at least one of the following: the position of the physical resource block where the phase tracking reference signal is located, and the position of one or more subcarriers of the phase tracking reference signal in a physical resource block.

[0160] pass Fig.14In the device shown, the first transmission node sends a phase tracking reference signal; wherein the frequency domain pattern of the phase tracking reference signal includes at least one of the following: the position of the physical resource block where the phase tracking reference signal is located, and the position of one or more subcarriers of the phase tracking reference signal in a physical resource block. In other words, the first transmission node configures the position of the physical resource block where the phase tracking reference signal is located and the specific position of the subcarrier, instead of configuring 1 subcarrier position for every N (N is related to the frequency domain density of the phase tracking reference signal) physical resource blocks PRB for the phase tracking reference signal of one port, thereby solving the problem in the related art that the configuration of distributed phase tracking reference signals cannot better solve the interference between subcarriers, and achieving the technical effect of effectively avoiding interference between subcarriers.

[0161] Optionally, the frequency domain pattern is predefined by the first transmission node or configured through radio resource control signaling.

[0162] In this embodiment, a phase tracking reference signal receiving device is also provided. Fig.15 As shown, the device comprises:

[0163] 1) A receiving module 152, configured to receive a phase tracking reference signal sent by a first transmission node;

[0164] The frequency domain pattern of the phase tracking reference signal includes at least one of the following: the position of the physical resource block where the phase tracking reference signal is located, and the position of one or more subcarriers of the phase tracking reference signal in a physical resource block.

[0165] pass Fig.15 In the device shown, the second transmission node receives the frequency domain pattern of the phase tracking reference signal sent by the first transmission node, wherein the frequency domain pattern includes at least one of the following: the position of the physical resource block where the phase tracking reference signal is located, and the position of one or more subcarriers of the phase tracking reference signal in a physical resource block. In other words, the first transmission node configures the position of the physical resource block where the phase tracking reference signal is located and the specific position of the subcarrier, instead of configuring 1 subcarrier position for every N (N is related to the frequency domain density of the phase tracking reference signal) physical resource blocks PRB for the phase tracking reference signal of one port, thereby solving the problem in the related art that the configuration of distributed phase tracking reference signals cannot better solve the interference between subcarriers, and achieving the technical effect of effectively avoiding interference between subcarriers.

[0166] Optionally, the frequency domain pattern is predefined by the first transmission node or configured through radio resource control signaling.

[0167] It should be noted that the above modules can be implemented by software or hardware. For the latter, it can be implemented in the following ways, but not limited to: the above modules are all located in the same processor; or the above modules are located in different processors in any combination.

[0168] Example 3

[0169] An embodiment of the present disclosure further provides a storage medium, in which a computer program is stored, wherein the computer program is configured to execute the steps of any of the above method embodiments when running.

[0170] Optionally, in this embodiment, the storage medium may be configured to store a computer program for performing the following steps:

[0171] S1, the first transmission node sends a phase tracking reference signal; wherein, the frequency domain pattern of the phase tracking reference signal includes at least one of the following: the position of the physical resource block where the phase tracking reference signal is located, and the position of one or more subcarriers of the phase tracking reference signal in a physical resource block.

[0172] Optionally, the storage medium is further configured to store a computer program for performing the following steps:

[0173] S1, the second transmission node receives a phase tracking reference signal sent by the first transmission node; wherein the frequency domain pattern of the phase tracking reference signal includes at least one of the following: the position of the physical resource block where the phase tracking reference signal is located, the position of one or more subcarriers of the phase tracking reference signal in a physical resource block.

[0174] Optionally, in this embodiment, the above-mentioned storage medium may include but is not limited to: a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and other media that can store computer programs.

[0175] An embodiment of the present disclosure further provides a device, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0176] Optionally, the above-mentioned device may further include a transmission device and an input / output device, wherein the transmission device is connected to the above-mentioned processor, and the input / output device is connected to the above-mentioned processor.

[0177] Optionally, in this embodiment, the processor may be configured to perform the following steps through a computer program:

[0178] S1, the first transmission node sends a phase tracking reference signal; wherein, the frequency domain pattern of the phase tracking reference signal includes at least one of the following: the position of the physical resource block where the phase tracking reference signal is located, and the position of one or more subcarriers of the phase tracking reference signal in a physical resource block.

[0179] Optionally, the processor is further configured to store a computer program for performing the following steps:

[0180] S1, the second transmission node receives a phase tracking reference signal sent by the first transmission node; wherein the frequency domain pattern of the phase tracking reference signal includes at least one of the following: the position of the physical resource block where the phase tracking reference signal is located, the position of one or more subcarriers of the phase tracking reference signal in a physical resource block.

[0181] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation modes, and this embodiment will not be described in detail here.

[0182] Obviously, those skilled in the art should understand that the above-mentioned modules or steps of the present disclosure can be implemented by a general-purpose computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, and optionally, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order from that herein, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present disclosure is not limited to any specific combination of hardware and software.

[0183] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A method for transmitting a phase tracking reference signal, characterized in that: include: The first transmission node sends a phase tracking reference signal; The frequency domain pattern of the phase tracking reference signal includes at least one of the following: the position of the physical resource block where the phase tracking reference signal is located, the position of one or more subcarriers of the phase tracking reference signal in a physical resource block; Wherein, the method further comprises: The first transmission node indicates the type of the frequency domain pattern and / or the content included in the frequency domain pattern according to the configured port number of the demodulation reference signal; or, The first transmitting node indicates the type of the frequency domain pattern and / or the content included in the frequency domain pattern according to a configured demodulation reference signal sequence.

2. The method according to claim 1, characterized in that The frequency domain pattern is predefined by the first transmission node or configured through radio resource control signaling.

3. The method according to claim 1, characterized in that Before the first transmission node sends the phase tracking reference signal, the method further includes: The first transmitting node configures a frequency domain pattern of the phase tracking reference signal.

4. The method according to claim 3, characterized in that The frequency domain pattern of the phase tracking reference signal configured by the first transmission node includes: The first transmitting node configures the starting position of the physical resource block where the phase tracking reference signal is located to be the first physical resource block of the allocated bandwidth.

5. The method according to claim 1, characterized in that The position of the physical resource block where the phase tracking reference signal is located is determined by at least one of the following parameters: Cell radio network temporary identifier, cell identifier, identifier used for sequence initialization.

6. The method according to claim 1, characterized in that The position of one or more subcarriers of the phase tracking reference signal in a physical resource block is determined by at least one of the following parameters: Cell radio network temporary identifier, cell identifier, identifier used for sequence initialization, and port number of demodulation reference signal.

7. The method according to claim 3, characterized in that The frequency domain pattern of the phase tracking reference signal configured by the first transmission node includes: The first transmission node configures the starting position of multiple subcarriers of the phase tracking reference signal in a physical resource block to be on the subcarrier with the lowest sequence number.

8. The method according to claim 1, characterized in that The method further comprises: The first transmission node instructs to send the phase tracking reference signal according to the frequency domain pattern by sending at least one of the following signaling: Radio resource control signaling, media access control unit signaling, downlink control information signaling.

9. The method according to claim 1, characterized in that: The method further comprises: The first transmission node indicates the number of subcarriers of the phase tracking reference signal sent in a physical resource block by sending at least one of the following signaling: Radio resource control signaling, media access control unit signaling, downlink control information signaling.

10. The method according to claim 1, characterized in that The number of subcarriers occupied in one or more demodulation reference signal groups sent by the first transmission node is the maximum number of subcarriers sent by the phase tracking reference signal in one physical resource block.

11. The method according to claim 1, characterized in that: The method further comprises: The first transmitting node indicates the type of the frequency domain pattern and / or the content included in the frequency domain pattern through the type of the demodulation reference signal.

12. The method according to claim 1, characterized in that The types of the frequency domain pattern include: a distributed frequency domain pattern and a centralized frequency domain pattern, wherein the type of the frequency domain pattern is selected according to at least one of the following information: A first correspondence between the frequency domain pattern and a threshold of a frequency domain segment configured by the first transmission node, and a second correspondence between the frequency domain pattern and a threshold of a subcarrier interval configured by the first transmission node.

13. The method according to claim 12, characterized in that The first corresponding relationship and / or the second corresponding relationship is predefined by the first transmission node or notified by sending a radio resource control signaling.

14. The method according to claim 1, characterized in that The first transmission node configures different physical resource block positions for the phase tracking reference signal at different times.

15. The method according to claim 1, characterized in that The first transmission node determines a physical resource block position of the phase tracking reference signal according to a frequency domain resource position allocated to the second transmission node.

16. The method according to claim 1, characterized in that There is a third corresponding relationship between the physical resource block position of the phase tracking reference signal and the bandwidth allocated by the first transmission node.

17. The method according to claim 16, characterized in that The third corresponding relationship is to configure the physical resource block position of the phase tracking reference signal to be the middle position of the bandwidth allocated by the first transmission node to the second transmission node.

18. The method according to claim 1, characterized in that The method further comprises: The first transmission node determines at least one of the following parameters of the phase tracking reference signal according to the capability of the second transmission node: a physical resource block position, a number of subcarriers within a physical resource block, and a subcarrier position within a physical resource block.

19. A method for receiving a phase tracking reference signal, characterized in that: include: The second transmission node receives the phase tracking reference signal sent by the first transmission node; Among them, the frequency domain pattern of the phase tracking reference signal includes at least one of the following: the position of the physical resource block where the phase tracking reference signal is located, the position of one or more subcarriers of the phase tracking reference signal in a physical resource block, the first transmission node indicates the type of the frequency domain pattern and / or the content included in the frequency domain pattern according to the configured port number of the demodulation reference signal, or the first transmission node indicates the type of the frequency domain pattern and / or the content included in the frequency domain pattern according to the configured demodulation reference signal sequence.

20. The method according to claim 19, characterized in that The frequency domain pattern is predefined by the first transmission node or configured through radio resource control signaling.

21. The method according to claim 19, characterized in that The position of the physical resource block where the phase tracking reference signal is located is determined by at least one of the following parameters: Cell radio network temporary identifier, cell identifier, identifier used for sequence initialization.

22. The method according to claim 19, characterized in that The position of one or more subcarriers of the phase tracking reference signal in a physical resource block is determined by at least one of the following parameters: Cell radio network temporary identifier, cell identifier, identifier used for sequence initialization, and port number of demodulation reference signal.

23. A phase tracking reference signal sending device, applied to a first transmission node, characterized in that: include: A sending module, used for sending a phase tracking reference signal; The frequency domain pattern of the phase tracking reference signal includes at least one of the following: the position of the physical resource block where the phase tracking reference signal is located, the position of one or more subcarriers of the phase tracking reference signal in a physical resource block; Among them, the sending device is also used to indicate the type of the frequency domain pattern and / or the content included in the frequency domain pattern according to the port number of the configured demodulation reference signal; or, to indicate the type of the frequency domain pattern and / or the content included in the frequency domain pattern according to the sequence of the configured demodulation reference signal.

24. The device according to claim 23, characterized in that The frequency domain pattern is predefined by the first transmission node or configured through radio resource control signaling.

25. A phase tracking reference signal receiving device, applied to a second transmission node, characterized in that: include: A receiving module, configured to receive a phase tracking reference signal sent by a first transmission node; Among them, the frequency domain pattern of the phase tracking reference signal includes at least one of the following: the position of the physical resource block where the phase tracking reference signal is located, the position of one or more subcarriers of the phase tracking reference signal in a physical resource block, and the first transmission node indicates the type of the frequency domain pattern and / or the content included in the frequency domain pattern according to the number of ports of the configured demodulation reference signal, or indicates the type of the frequency domain pattern and / or the content included in the frequency domain pattern according to the sequence of the configured demodulation reference signal.

26. The device according to claim 25, characterized in that The frequency domain pattern is predefined by the first transmission node or configured through radio resource RRC signaling.

27. A storage medium, characterized in that: The storage medium stores a computer program, wherein the computer program is configured to execute the method of any one of claims 1 to 18 or claims 19 to 22 when executed.

28. A device comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to run the computer program to perform the method described in any one of claims 1 to 18 or claims 19 to 22.

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