Reference signal sending method and related device

Abstract

Embodiments of the present application provide a reference signal transmission method and a related device, the method comprising: transmitting a phase tracking reference signal (PTRS) according to first information, the first information comprising at least one of the following items: the number of PTRS resource units (REs), the number of non-zero power (NZP) PTRS REs, the number of zero power ZP PTRS REs, or the number of puncturing REs, the number of the puncturing REs being at least one of the number of the PTRS REs, the number of the NZP PTRS REs, the number of the puncturing REs being at least one of the number of the puncturing REs, and the number of the puncturing REs being at least one of the number of the NZP PTRS REs. Wherein the PTRS RE is used for bearing the PTRS, the NZP PTRS RS is used for bearing the NZP PTRS, the ZP PTRS RS is used for bearing the ZP PTRS, and the puncturing RE is used for not transmitting data or transmitting zero-power signals. In a process in which the communication device transmits the PTRS according to the first information, in addition to a PTRS RE or an NZP PTRS RE, a ZP PTRS RE or a puncturing RE is also considered. Therefore, the PTRS RE or the NZP PTRS RE can obtain the extra power from the ZP PTRS RE or the punching RE, and the phase noise estimation precision is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and particularly relates to a reference signal sending method and related apparatus. BACKGROUND

[0002] In new radio (NR), both uplink and downlink can use demodulation reference signal (DMRS) and phase tracking reference signal (PTRS) to complete channel estimation, phase noise estimation and data demodulation. Among them, DMRS is used for channel estimation and data demodulation, and PTRS is used for phase noise estimation.

[0003] In NR, there is a corresponding relationship between PTRS and DMRS ports. Currently, the PTRS corresponding to one DMRS port appears once every two or four resource blocks (RBs). In the corresponding RB, the PTRS corresponding to one DMRS port is mapped to one resource element (RE) in the RB corresponding to the DMRS port. Therefore, after determining the number of the RE to which the PTRS is mapped, the PTRS can be received or transmitted.

[0004] Since one PTRS port can only be associated with one DMRS port, therefore, there is only one PTRS port for one data stream corresponding to one DMRS port. When the physical downlink shared channel (PDSCH) or the physical uplink shared channel (PUSCH) carries multiple data streams, other data streams in the multiple data streams need to be punctured on other REs carrying PTRS REs, the other data streams refer to data streams using the same time domain resource, the same frequency domain resource and different spatial domain resource as the data stream corresponding to the PTRS port, the other data streams can also be referred to as data streams of different layers, and the puncturing on the RE refers to not transmitting data or transmitting zero power (ZP) signals on the RE.

[0005] However, the RE carrying the PTRS (referred to as PTRS RE) and the RE carrying the data (referred to as data RE) are transmitted using the same time domain resource, and under the action of the phase noise, inter carrier interference (ICI) is generated between the two, which affects the communication quality. SUMMARY

[0006] The application provides a reference signal transmission method and related apparatus, so that the PTRS RE can obtain extra power from the punctured RE, and ICI interference between the PTRS RE and the data RE of the data stream is avoided.

[0007] In a first aspect, the embodiments of the application provide a reference signal transmission method, which is applied to a communication device. The communication device can be a network device or a terminal device. The method comprises the following steps.

[0008] According to the first information, a phase tracking reference signal (PTRS) is transmitted, wherein the first information comprises at least one of the following: a number of PTRS resource elements (REs), a number of non-zero power (NZP) PTRS REs, a number of zero power (ZP) PTRS REs, or a number of punctured REs, wherein the PTRS REs are used to carry the PTRS, the NZP PTRS REs are used to carry NZP PTRS, the ZP PTRS REs are used to carry ZP PTRS, and the punctured REs are used to not transmit data or to transmit zero power signals.

[0009] In a possible implementation, the first information comprises the number of PTRS REs and the number of ZP PTRS REs. The number of PTRS REs is greater than or equal to 1, and the number of ZP PTRS REs is greater than or equal to 1.

[0010] In another possible implementation, the first information comprises the number of PTRS REs and the number of punctured REs. The number of PTRS REs is greater than or equal to 1, and the number of punctured REs is greater than or equal to 1.

[0011] In another possible implementation, the first information comprises the number of NZP PTRS REs and the number of ZP PTRS REs. The number of NZP PTRS REs is greater than or equal to 1, and the number of ZP PTRS REs is greater than or equal to 1.

[0012] In another possible implementation, the first information comprises the number of NZP PTRS REs and the number of punctured REs.

[0013] In the embodiments of the application, in the process of transmitting the PTRS by the communication device according to the first information, the ZP PTRS RE or the punctured RE is considered in addition to the PTRS RE or the NZP PTRS RE. So that the PTRS RE or the NZP PTRS RE can obtain extra power from the ZP PTRS RE or the punctured RE, and the phase noise estimation accuracy is ensured.

[0014] In a possible implementation manner of the first aspect, the PTRS RE, the NZP PTRS RE, the ZP PTRS RS, and / or the puncturing RE use same time domain resources; or the PTRS RE, the NZP PTRS RE, the ZP PTRS RS, and / or the puncturing RE use same space domain resources.

[0015] In the technical solution, in the RE corresponding to the data stream of the same transmission layer, the PTRS RE included in the multiple REs corresponding to the same time domain resource also includes the puncturing RE, so that the PTRS RE can obtain additional power from the puncturing RE, and ICI interference between the PTRS RE and other REs of the data stream is avoided. Alternatively, in the RE corresponding to the data stream of the same transmission layer, the NZP PTRS RE included in the multiple REs corresponding to the same time domain resource also includes the ZP PTRS RE, so that the NZP PTRS RE can obtain additional power from the ZP PTRS RE, and ICI interference between the NZP PTRS RE and other REs of the data stream is avoided.

[0016] In a possible implementation manner of the first aspect, the PTRS RE, the NZP PTRS RE, the ZP PTRS RS, and / or the puncturing RE use same time domain resources, including that the PTRS RE, the NZP PTRS RE, the ZP PTRS RE, and / or the puncturing RE are located in a same orthogonal frequency division multiplexing, OFDM, symbol; or the PTRS RE, the NZP PTRS RE, the ZP PTRS RE, and / or the puncturing RE are transmitted on the same OFDM symbol.

[0017] In a possible implementation manner of the first aspect, the PTRS RE, the NZP PTRS RE, the ZP PTRS RS, and / or the puncturing RE use same space domain resources, including that the PTRS RE, the NZP PTRS RE, the ZP PTRS RS, and / or the puncturing RE are mapped to a same transmission layer.

[0018] In the technical solution, the number of data streams is not limited, and the transmission power of the PTRS can be improved when the rank is 1, so as to ensure the phase noise estimation accuracy. In addition, the transmission power of the PTRS can be improved for a terminal device with partial coherence or a terminal device without coherence, so as to ensure the phase noise estimation accuracy.

[0019] In a possible implementation manner of the first aspect, the OFDM symbol carrying the PTRS RE, the NZP PTRS RE, the ZP PTRS RE and / or the punctured RE is further used to carry a data RE, and the data RE is used to transmit data or used to transmit a non-zero power signal.

[0020] In the technical solution, in the RE corresponding to the data stream of the same transmission layer, the PTRS RE included in the multiple REs corresponding to the same time domain resource also includes the punctured RE, so that the PTRS RE can obtain additional power from the punctured RE, and ICI interference between the PTRS RE and the data RE of the data stream is avoided. Alternatively, in the RE corresponding to the data stream of the same transmission layer, the NZP PTRS RE included in the multiple REs corresponding to the same time domain resource also includes the ZP PTRS RE, so that the NZP PTRS RE can obtain additional power from the ZP PTRS RE, and ICI interference between the NZP PTRS RE and the data RE of the data stream is avoided.

[0021] In a possible implementation manner of the first aspect, the transmission power of the PTRS is related to the ZP PTRS RE, or the transmission power of the PTRS is related to the punctured RE.

[0022] The ratio of the transmission power of the PTRS RE to the transmission power of the data RE satisfies:

[0023] P PTRS / P data = 10log 10 (Num RE);

[0024] wherein, P PTRS is the transmission power of the PTRS RE, P data is the transmission power of the data RE, and Num RE is the number of the punctured RE or the number of the ZP PTRS RE.

[0025] Alternatively, the ratio of the transmission power of the data RE to the transmission power of the PTRS RE satisfies:

[0026] P data / P PTRS = -10log 10 (Num RE);

[0027] wherein, P PTRS is the transmission power of the PTRS RE, and P data is the transmission power of the data RE.

[0028] In a possible implementation manner of the first aspect, the transmission power of the PTRS is related to the ZP PTRS RE, or the transmission power of the PTRS is related to the punctured RE.

[0029] The power ratio factor of the transmission power of the PTRS RE and the transmission power of the data RE satisfies:

[0030]

[0031] wherein, is the power ratio factor of the transmission power of the PTRS RE and the transmission power of the data RE, and Num RE is the number of the punctured RE or the number of the ZP PTRS RE;

[0032] Or, the power ratio factor of the transmission power of the data RE and the transmission power of the PTRS RE is:

[0033]

[0034] wherein, is the power ratio factor of the transmission power of the data RE and the transmission power of the PTRS RE.

[0035] In a possible implementation manner of the first aspect, transmitting the PTRS according to the first information comprises:

[0036] According to the first information, a first sequence is determined, the first sequence comprising the PTRS RE or the NZP PTRS RS; the first sequence is oversampled to generate the PTRS; and the PTRS is transmitted.

[0037] In the above technical solution, the PTRS RE (or the NZP PTRS RE) is filtered separately to suppress the influence of the OOB signal generated by the PTRS RE (or the NZP PTRS RE) on the data RE.

[0038] In a possible implementation manner of the first aspect, the first sequence is oversampled to generate the PTRS, comprising: the first sequence is oversampled to generate a second sequence; and the second sequence is filtered to generate the PTRS.

[0039] In a possible implementation manner of the first aspect, the second sequence is filtered to generate the PTRS, comprising: the second sequence is multiplied by a third sequence to generate the PTRS, the third sequence comprising N filter coefficients, N being the number of the punctured RE or the number of the ZP PTRS RE, and N being greater than or equal to 1.

[0040] In a possible implementation manner of the first aspect, the PTRS is generated by using the following method, comprising:

[0041]

[0042] wherein s is the first sequence, 1 N is a column vector with length N and all elements being 1, is the second sequence, is the third sequence, is the PTRS.

[0043] The second aspect of the present application provides a communication device, which is a communication device, comprising a transceiver unit and a processing unit.

[0044] In the second aspect of the present application, the component modules of the communication device can also be used to perform the steps performed in the various possible implementation manners of the first aspect and achieve the corresponding technical effects, which can be referred to the first aspect for details and will not be described here.

[0045] The third aspect of the present application provides a communication device, comprising at least one processor, the at least one processor is coupled with a memory; the memory is used to store programs or instructions; the at least one processor is used to execute the programs or instructions, so that the device realizes the method in any one of the possible implementation manners of the first aspect.

[0046] The fourth aspect of the present application provides a communication device, comprising at least one logic circuit and an input and output interface; the logic circuit is used to execute the method as described in any one of the possible implementation manners of the first aspect.

[0047] The fifth aspect of the present application provides a communication system, which comprises the communication device.

[0048] Optionally, the communication system further comprises other communication devices in communication with the communication device.

[0049] Optionally, the communication device is a terminal device and / or a network device.

[0050] The sixth aspect of the present application provides a computer readable storage medium, which is used to store one or more computer execution instructions, when the computer execution instructions are executed by a processor, the processor executes the method as described in any one of the possible implementation manners of the first aspect.

[0051] The seventh aspect of the present application provides a computer program product (or computer program), when the computer program in the computer program product is executed by the processor, the processor executes the method in any possible implementation manner of the first aspect.

[0052] The eighth aspect of the present application provides a chip or chip system, which comprises at least one processor for supporting the communication device to implement the method in any possible implementation manner of the first aspect.

[0053] In a possible design, the chip or chip system can further comprise a memory for storing necessary program instructions and data of the communication device. The chip system can be composed of a chip or can comprise a chip and other discrete devices. Optionally, the chip system further comprises an interface circuit, which provides program instructions and / or data for the at least one processor.

[0054] The technical effects brought by the designs in the second aspect to the eighth aspect can be referred to the technical effects brought by the designs in the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0055] Figure 1 An architecture diagram of a communication system 10 to which embodiments of the present application are applied;

[0056] Figure 2 An illustration of PTRS RE;

[0057] Figure 3 An embodiment flowchart of a method for transmitting a reference signal in an embodiment of the present application;

[0058] Figure 4 An illustration of PTRS RE and punctured RE in an embodiment of the present application;

[0059] Figure 5 Another illustration of PTRS RE and punctured RE in an embodiment of the present application;

[0060] Figure 6 Another illustration of PTRS RE and punctured RE in an embodiment of the present application;

[0061] Figure 7 Another illustration of PTRS RE and punctured RE in an embodiment of the present application;

[0062] Figure 8 Another illustration of PTRS RE and punctured RE in an embodiment of the present application;

[0063] Figure 9A schematic diagram of oversampling and filtering processing on a first sequence in an embodiment of the present application is shown in FIG. 1.

[0064] Figure 10 A schematic diagram of a communication device provided by the present application is shown in FIG. 2.

[0065] Figure 11 Another schematic diagram of a communication device provided by the present application is shown in FIG. 3.

[0066] Figure 12 Another schematic diagram of a communication device provided by the present application is shown in FIG. 4.

[0067] Figure 13 Another schematic diagram of a communication device provided by the present application is shown in FIG. 5. DETAILED DESCRIPTION

[0068] First, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

[0069] (1) Terminal device: can be a wireless terminal device capable of receiving network device scheduling and indication information, the wireless terminal device can be a device providing voice and / or data connectivity to a user, or a handheld device with wireless connection function, or other processing devices connected to a wireless modem.

[0070] A terminal device can communicate with one or more core networks or the Internet via a radio access network (RAN), and the terminal device can be a mobile terminal device, such as a mobile phone (or called "cellular" phone, mobile phone), a computer, and a data card, for example, which can be a portable, pocket, hand-held, computer- built-in, or vehicle-mounted mobile device that exchanges voice and / or data with a radio access network. For example, a personal communication service (PCS) phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a Pad, a computer with wireless transceiver function, and the like. The wireless terminal device can also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station (MS), a remote station, an access point (AP), a remote terminal, an access terminal, a user terminal, a user agent, a subscriber station (SS), customer premises equipment (CPE), a terminal, user equipment (UE), a mobile terminal (MT), and the like.

[0071] By way of example and not limitation, in embodiments of the present application, the terminal device can also be a wearable device. The wearable device can also be referred to as a smart wearable device or a smart wearable device, etc., which is a general term for devices that can be designed and developed by applying wearable technology to daily wear, such as glasses, gloves, watches, clothing, and shoes, etc. The wearable device is a portable device that can be directly worn on the body or integrated into the user's clothes or accessories. The wearable device is not only a hardware device, but also a powerful function realized through software support and data interaction, cloud interaction. The broad sense of wearable smart devices includes full-featured, large-sized devices that can realize complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and devices that focus on a certain application function and need to be used with other devices such as smart phones, such as various smart wristbands, smart helmets, smart jewelry, etc.

[0072] The terminal can also be a drone, a robot, a terminal in device-to-device (D2D) communication, a terminal in vehicle to everything (V2X), a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc.

[0073] In addition, the terminal device can also be a terminal device in a communication system evolved after the 5th generation (5G) communication system (such as a 6th generation (6G) communication system, etc.) or a terminal device in a future evolved public land mobile network (PLMN), etc. For example, the 6G network can further expand the form and function of the 5G communication terminal, and the 6G terminal includes but is not limited to vehicles, cellular network terminals (with satellite terminal functions), drones, internet of things (IoT) devices.

[0074] (2) Network device: can be a device in a wireless network, for example, the network device can be a RAN node (or device) for accessing a terminal device to a wireless network, which can also be referred to as a base station. At present, some examples of RAN devices are: a base station, an evolved NodeB (eNodeB), a base station gNB (gNodeB) in a 5G communication system, a transmission reception point (TRP), an evolved Node B (eNB), a radio network controller (RNC), a Node B (NB), a home base station (for example, a home evolved Node B, or a home Node B (HNB)), a baseband unit (BBU), or a wireless fidelity (Wi-Fi) access point (AP), etc. In addition, in a network structure, the network device can include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node.

[0075] Optionally, the RAN node can also be a macro base station, a micro base station or an indoor station, a relay node or a donor node, or a wireless controller in a cloud radio access network (CRAN) scenario. The RAN node can also be a server, a wearable device, a vehicle or a vehicle-mounted device, etc. For example, the access network device in vehicle to everything (V2X) technology can be a road side unit (RSU).

[0076] In another possible scenario, a terminal is assisted by multiple RAN nodes to implement wireless access, and different RAN nodes respectively implement part of functions of a base station. For example, a RAN node can be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and the DU can be separately arranged, or can also be included in the same network element, for example, in a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, for example, included in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0077] In different systems, the CU (or CU-CP and CU-UP), DU or RU can also have different names, but those skilled in the art can understand their meanings. For example, in an open RAN (O-RAN or ORAN) system, the CU can also be referred to as an O-CU (open CU), the DU can also be referred to as an O-DU, the CU-CP can also be referred to as an O-CU-CP, the CU-UP can also be referred to as an O-CU-UP, and the RU can also be referred to as an O-RU. For the convenience of description, the CU, CU-CP, CU-UP, DU and RU are taken as examples for description in this application. Any one of the CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0078] The communication between the access network device and the terminal device follows a certain protocol layer structure. The protocol layer can include a control plane protocol layer and a user plane protocol layer. The control plane protocol layer can include at least one of a radio resource control (RRC) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, a media access control (MAC) layer, or a physical (PHY) layer, etc. The user plane protocol layer can include at least one of a service data adaptation protocol (SDAP) layer, a PDCP layer, an RLC layer, a MAC layer, or a physical layer, etc.

[0079] For the correspondence between the network element in the ORAN system and the protocol layer function that can be implemented by the network element, refer to Table 1 below.

[0080] Table 1

[0081] ORAN network element Protocol layer functions of 3GPP O-CU-CP RRC+PDCP - control plane (PDCP-C) O-CU-UP SDAP+PDCP - user plane (PDCP-U) O-DU RLC+MAC+PHY-high O-RU PHY-low

[0082] The network device can be other devices that provide wireless communication functions for terminal devices. Embodiments of the present application do not limit the specific technology and specific device form adopted by the network device. For the convenience of description, the embodiments of the present application do not limit.

[0083] The network device can further include a core network device, for example, including a mobility management entity (MME) in a 4th generation (4G) network, a home subscriber server (HSS), a serving gateway (S-GW), a policy and charging rules function (PCRF), a public data network gateway (P-GW), a network element such as an access and mobility management function (AMF), a user plane function (UPF), or a session management function (SMF) in a 5G network, and the like. In addition, the core network device can also include other core network devices in a 5G network and a next-generation network of the 5G network.

[0084] In the embodiments of the present application, the device for implementing the function of the network device can be the network device, or a device capable of supporting the network device to implement the function, such as a chip system, which can be installed in the network device. In the technical solutions provided in the embodiments of the present application, the device for implementing the function of the network device is taken as an example to describe the technical solutions provided in the embodiments of the present application.

[0085] (3) Configuration and pre-configuration: in the present application, configuration and pre-configuration will be used simultaneously. Among them, the configuration refers to that the network device and / or the server sends some parameter configuration information or parameter values to the terminal through a message or signaling, so that the terminal determines the communication parameters or the resource in the transmission according to the values or information. The pre-configuration is similar to the configuration, which can be the parameter information or parameter value agreed by the network device and / or the server and the terminal device in advance, or the parameter information or parameter value adopted by the base station / network device or the terminal device according to the standard protocol, or the parameter information or parameter value pre-stored in the base station and / or the server or the terminal device. The present application does not limit this.

[0086] Further, the values and parameters can be changed or updated.

[0087] (4) The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "Multiple" means two or more. "And / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects. "At least one of the following" or similar expressions means any combination of these items, including any combination of single or multiple items. For example, "at least one of A, B, and C" includes A, B, C, AB, AC, BC, or ABC. In addition, unless otherwise specified, the ordinal numbers "first", "second", etc. mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, time sequence, priority or importance of the multiple objects.

[0088] (5) In the embodiments of the present application, "sending" and "receiving" represent the direction of signal transmission. For example, "sending information to XX" can be understood as that the destination of the information is XX, which can include direct sending through the air interface, or indirect sending through the air interface by other units or modules. "Receiving information from YY" can be understood as that the source of the information is YY, which can include direct receiving from YY through the air interface, or indirect receiving from YY through the air interface by other units or modules. "Sending" can also be understood as "output" of a chip interface, and "receiving" can also be understood as "input" of a chip interface.

[0089] In other words, sending and receiving can be between devices, such as between network devices and terminal devices, or within devices, such as between components, modules, chips, software modules or hardware modules within a device through a bus, wire or interface.

[0090] It can be understood that the information may be processed as necessary between the source and the destination of the information transmission, such as encoding and modulation, but the destination can understand the valid information from the source. Similar expressions in the present application can be similarly understood, and will not be repeated here.

[0091] (6) In the embodiments of the present application, the indication can include direct indication and indirect indication, and can also include explicit indication and implicit indication. The information indicated by certain information (indication information described below) is referred to as to-be-indicated information. In the implementation process, there are many ways to indicate the to-be-indicated information, for example, but not limited to, the to-be-indicated information can be directly indicated, such as the to-be-indicated information itself or the index of the to-be-indicated information. The to-be-indicated information can also be indirectly indicated by indicating other information, where the other information and the to-be-indicated information have an association relationship. The to-be-indicated information can also be indicated only by a part of the to-be-indicated information, and the other part of the to-be-indicated information is known or agreed in advance. For example, the arrangement order of each information agreed in advance (for example, protocol predefined) can be used to indicate a specific information, thereby reducing the indication overhead to a certain extent. The present application does not limit the specific manner of indication. It can be understood that the indication information can be used to indicate the to-be-indicated information for the sender of the indication information, and the indication information can be used to determine the to-be-indicated information for the receiver of the indication information.

[0092] (7) Beam.

[0093] The fifth generation (5th generation, 5G) mobile communication system can use high frequency communication, that is, use high frequency band signal to transmit data. One of the main problems of high frequency communication is that the signal energy sharply decreases with the transmission distance, resulting in short signal transmission distance. In order to overcome this problem, high frequency communication uses analog beam technology, which concentrates signal energy in a small angle range by weighting processing of antenna array, forms a signal similar to light beam (called analog beam, simply referred to as beam), thereby improving the transmission distance. Network devices and terminal devices both use beams for transmission.

[0094] The embodiment of the application can be spatial domain filter, spatial filter, spatial domain parameter, spatial parameter, spatial domain setting, spatial setting, quasi-colocation (QCL) information, QCL assumption, QCL indication, etc. in the implementation of the new radio (NR) protocol. The beam can be indicated by the transmission configuration indicator state (TCI-state) parameter or the spatial relation parameter. Therefore, in the embodiment of the application, the beam can be replaced by the spatial domain filter, the spatial filter, the spatial domain parameter, the spatial parameter, the spatial domain setting, the spatial setting, the QCL information, the QCL assumption, the QCL indication, the TCI-state (DL TCI-state, UL TCI-state), the spatial relation, etc. The above terms are also equivalent to each other. The beam can also be replaced by other terms representing the beam, which is not limited in the application.

[0095] The beam for transmitting a signal can be referred to as a transmission beam (Tx beam), and can also be referred to as a spatial domain transmission filter, a spatial transmission filter, a spatial domain transmission parameter or a spatial transmission parameter, a spatial domain transmission setting or a spatial transmission setting. The downlink transmission beam can be indicated by the TCI-state.

[0096] A beam for receiving a signal can be referred to as a reception beam (Rx beam), a spatial domain reception filter, a spatial reception filter, a spatial domain reception parameter or a spatial reception parameter, a spatial domain reception setting or a spatial reception setting. An uplink transmission beam can be indicated by a spatial relation, or an uplink TCI-state, or a sounding reference signal (SRS) resource (indicating a transmission beam using the SRS). Therefore, the uplink beam can also be replaced by the SRS resource.

[0097] A transmission beam can refer to a distribution of signal strength in different directions in space after a signal is transmitted by an antenna, and a reception beam can refer to a distribution of signal strength in different directions in space of a wireless signal received by an antenna.

[0098] In addition, a beam can be a wide beam, or a narrow beam, or other types of beams. The technology for forming a beam can be beamforming technology or other technology. The beamforming technology can be digital beamforming technology, analog beamforming technology, or hybrid digital / analog beamforming technology, etc.

[0099] A beam is generally associated with a resource. For example, when performing beam measurement, the network device transmits reference signals corresponding to different measurement resources through different beams, and the terminal device measures the reference signals corresponding to each resource, which is equivalent to measuring the quality of each beam. Therefore, the terminal device feeds back the measured resource quality, and the network device knows the quality of the corresponding beam. In data transmission, beam information is also indicated by its corresponding resource. For example, the network device indicates the information of the physical downlink control channel (PDSCH) beam of the terminal device through the TCI field in the downlink control information (DCI).

[0100] Optionally, multiple beams with the same or similar communication characteristics can be regarded as one beam. One beam can include one or more antenna ports for transmitting data channels, control channels, and sounding signals, etc. One or more antenna ports forming a beam can also be regarded as an antenna port set.

[0101] In the embodiments of the present application, if not specified, a beam can refer to a transmitting beam of a terminal device or a network device. In beam measurement, each beam corresponds to a resource, so the beam corresponding to the resource can be uniquely identified by the index of the resource.

[0102] (8) Resource.

[0103] In the protocol, the term beam is not directly used to represent a beam, but other ways are used to implicitly describe beam-related operations. For example, in beam measurement, a beam and a resource have a corresponding relationship (the network device transmits its corresponding resource using one beam), and the quality of the resource measured by the terminal device is equivalent to the quality of the beam measured. The resource can be an uplink signal resource or a downlink signal resource. The uplink signal includes but is not limited to a sounding reference signal (SRS) and a demodulation reference signal (DMRS). The downlink signal includes but is not limited to a channel state information reference signal (CSI-RS), a cell-specific reference signal (CS-RS), a user equipment-specific reference signal (US-RS), a demodulation reference signal (DMRS), and a synchronization signal / physical broadcast channel block (SS / PBCH block). Among them, the SS / PBCH block can be referred to as a synchronization signal block (SSB).

[0104] (9) Antenna panel.

[0105] Generally, one or more antennas are arranged on one antenna panel to form an antenna array, and beamforming is performed to generate a beam pointing to a specific direction, that is, multiple beams in different directions can be formed on one antenna panel, but only one of them can be generated at the same time.

[0106] In the protocol, the antenna panel can be represented by panel, panel index, etc. In addition, the antenna panel can also be represented implicitly in other ways, for example, the antenna panel can also be represented by an antenna port, such as a CSI-RS port, an SRS port, a DMRS port, a PTRS port, a CRS port, a TRS port, an SSB port, etc.) or an antenna port group. Alternatively, the antenna panel can also be represented by a resource (such as a CSI-RS resource, an SRS resource, a DMRS resource, a PTRS resource, a CRS resource, a TRS resource, an SSB resource, etc.) or a resource group. Alternatively, the antenna panel can also be represented by a certain channel, such as a physical uplink control channel (PUCCH), a physical uplink sharing channel (PUSCH), a physical random access channel (PRACH), a physical downlink sharing channel (PDSCH), a physical downlink control channel (PDCCH), a physical broadcast channel (PBCH), etc. Alternatively, the antenna panel can also be represented by a beam, a QCL, a TCI-state, a spatial relation or an index configured in the QCL, the TCI-state or the spatial relation. Alternatively, the antenna panel can also be represented by a beam group, a QCL group, a TCI-state group, a spatial relation group, etc. Alternatively, the antenna panel can also be represented by a terminal capability parameter set reported by a terminal device. The terminal capability parameter set has a corresponding relationship with the antenna panel, and one terminal capability parameter set includes relevant terminal capabilities corresponding to one antenna panel, for example, one terminal capability parameter set includes maximum transmission layer number, maximum SRS port number, maximum transmission power, etc. information corresponding to one antenna panel.

[0107] In the embodiments of the present application, if not specified, the antenna panel refers to the antenna panel of the terminal device.

[0108] (10) phase tracking reference signal (PTRS).

[0109] Due to the non-ideality of the antenna device, after the signal is transmitted through the antenna, the phase of the signal will be offset, which can be referred to as phase noise (which can be referred to as phase noise for short). In high-frequency communication, phase noise has a greater impact on transmission performance. In order to solve this problem, the receiving end needs to measure the phase noise to determine the specific information of the phase noise, so as to remove the influence of the phase noise from the data signal. In order to measure the phase noise at the receiving end, the sending end needs to send a PTRS together with the data signal, and the receiving end can obtain the specific information of the phase noise (hereinafter referred to as phase noise information) by measuring the PTRS.

[0110] Next, the embodiments of the present application will be described in conjunction with the drawings.

[0111] First, the communication device in the embodiments of the present application has multiple possible implementation manners, which are as follows:

[0112] In one possible implementation manner, the communication device in the embodiments of the present application can be a terminal device.

[0113] In another possible implementation manner, the communication device in the embodiments of the present application can be a network device.

[0114] In the present application, except for special description, the same or similar parts between various embodiments can be mutually referred to. In the various embodiments in the present application, and the various methods / designs / implementation manners in each embodiment, if there is no special description and no logical conflict, the terms and / or descriptions between different embodiments, and between the various methods / designs / implementation manners in each embodiment are consistent and can be mutually referred to. The technical features in different embodiments, and in each method / design / implementation manner in each embodiment can be combined to form new embodiments, methods, or implementation manners according to their inherent logical relationship. The following embodiments of the present application do not constitute a limitation on the protection scope of the present application.

[0115] The present application can be applied to a long term evolution (LTE) system, a new radio (NR) system, or a communication system evolved after 5G (such as a future communication system, etc.). The communication system includes at least one network device and / or at least one terminal device.

[0116] For ease of understanding, please refer to Figure 1 , Figure 1 The architecture schematic diagram of the communication system 10 to which the embodiments of the present application are applied.

[0117] AsFigure 1 As shown, the communication system includes a wireless access network 100 and a core network 200. Optionally, the communication system 10 may also include an Internet 300. The wireless access network 100 may include at least one wireless access network device (which can also be understood as a network device as described above, such as...). Figure 1 The 110a and 110b mentioned above may also include at least one terminal (which can also be understood as the terminal device described above, such as...). Figure 1 (e.g., 120a-120j). Furthermore, wireless access network equipment can be macro base stations (such as...). Figure 1 110a in the text), can also be a micro base station or an indoor station (such as... Figure 1 110b) in the above can also be a relay node or a donor node, etc. It is understood that all or part of the functions of the wireless access network device in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (e.g., a cloud platform). The embodiments of this application do not limit the specific technology or specific device form used in the wireless access network device.

[0118] For ease of description, we will use a base station as a wireless access network device and terminal devices as terminals as an example. It is understood that when the communication system includes an integrated access and backhaul (IAB) network, the base station can be an IAB node.

[0119] In this application, the base station and the terminal can be fixed or mobile. The base station and the terminal can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted, on water, or in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of the base station and the terminal.

[0120] The roles of base stations and terminals can be relative, for example, Figure 1 The helicopter or drone 120i can be configured as a mobile base station. For terminals 120j accessing the wireless access network 100 via 120i, terminal 120i is a base station. However, for base station 110a, 120i is a terminal; that is, 110a and 120i communicate via a wireless air interface protocol. Of course, 110a and 120i can also communicate via a base station-to-base station interface protocol. In this case, relative to 110a, 120i is also a base station. Therefore, both base stations and terminals can be collectively referred to as communication devices. Figure 1 The 110a and 110b in the text can be referred to as communication devices with base station functions. Figure 1 The 120a-120j in the text can be referred to as communication devices with terminal functions.

[0121] The base station and the terminal, the base station and the base station, and the terminal and the terminal can communicate through a licensed spectrum, an unlicensed spectrum, or both. The communication can be through a spectrum below 6 gigahertz (GHz), a spectrum above 6 GHz, or both. Embodiments of the present application do not limit the spectrum used for wireless communication.

[0122] In embodiments of the present application, the functions of the base station can also be performed by a module (such as a chip) in the base station, or by a control subsystem containing base station functions. The control subsystem containing base station functions herein can be a control center in the application scenarios of the above terminals such as smart grids, industrial control, intelligent transportation, and smart cities. The functions of the terminal can also be performed by a module (such as a chip or modem) in the terminal, or by a device containing terminal functions.

[0123] In the present application, the base station sends a downlink signal (or downlink information) to the terminal, and the downlink signal (or downlink information) is carried on a downlink channel. The terminal sends an uplink signal (or uplink information) to the base station, and the uplink signal (or uplink information) is carried on an uplink channel.

[0124] In the NR system, both the uplink direction (referring to the terminal device to the network device direction) and the downlink direction (referring to the network device to the terminal device direction) can use DMRS and PTRS to complete channel estimation, phase noise estimation, and data demodulation, where DMRS is used for channel estimation and data demodulation, and PTRS is used to complete phase noise estimation. Phase noise is mainly introduced by a local oscillator circuit. Phase noise will introduce the same phase rotation on all subcarriers, i.e., common phase error (CPE), which will cause the modulation constellation points on all subcarriers to rotate at a fixed angle, affecting demodulation. Currently, the protocol specifies that PTRS has a corresponding relationship with the DMRS port. The PTRS corresponding to one DMRS port is mapped once every two resource blocks (RBs), or the PTRS corresponding to one DMRS port is mapped once every four RBs. The PTRS is mapped to an RB, specifically, the PTRS corresponding to a DMRS port is mapped to a resource element (RE) in the RB corresponding to the DMRS port. Therefore, after determining the RE number to which the PTRS is mapped and the DMRS port to which the PTRS is associated, the PTRS can be transmitted or received.

[0125] Since one PTRS port is associated with one DMRS port, one data stream is mapped with one DMRS port, one data stream is mapped with one PTRS port. When physical downlink shared channel (PDSCH) or physical uplink shared channel (PUSCH) carries multiple data streams, the multiple data streams use the same time domain resource (for example, use the same orthogonal frequency division multiplexing (OFDM) symbol) and the same frequency domain resource (for example, use the same subcarrier spacing (SCS)), the multiple data streams use different spatial domain resource (for example, are mapped to different layers).

[0126] Taking an example that the multiple data streams include data stream 1 and data stream 2, data stream 1 is mapped to layer 1, and data stream 2 is mapped to layer 2. Data stream 1 is associated with PTRS, and the RE carrying the PTRS in data stream 1 can also be referred to as PTRS RE or Non zero power (NZP) PTRS RE. In order to avoid the data of data stream 2 from interfering with the PTRS of data stream 1, the RE corresponding to the PTRS RE in data stream 2 is punctured, which means that the RE does not transmit data or transmits zero power (ZP) signal. For ease of understanding, please refer to Figure 2 , Figure 2 for the schematic diagram of the PTRS RE. Data stream 1 is mapped on PUSCH / PDSCH layer 1, and data stream 2 is mapped on PUSCH / PDSCH layer 2. The OFDM symbol used by data stream 1 is the same as the OFDM symbol used by data stream 2. The RE of data stream 1 includes PTRS RE (or NZP PTRS RE), and the RE corresponding to the PTRS RE in data stream 2 is punctured (i.e. punctured RE of data stream 2 or ZP PTRS RE), so that the PTRS RE of data stream 1 is free from the interference of data RE of data stream 2. In addition, the PTRS RE of data stream 1 can obtain additional power from the punctured RE to perform PTRS power boosting.

[0127] However, the PTRS RE and the RE carrying data (referred to as data RE) are transmitted using the same time domain resource, and inter carrier interference (ICI) is generated between the two under the action of phase noise, affecting the communication quality.

[0128] To solve the above technical problems, the present application provides a reference signal transmission method and related devices. Specifically, the communication device transmits a phase tracking reference signal (PTRS) according to first information, wherein the first information includes at least one of the following: the number of PTRS resource elements (REs), the number of non-zero power (NZP) PTRS REs, the number of zero power (ZP) PTRS REs, or the number of punctured REs. The PTRS RE is used to carry the PTRS, the NZP PTRS RS is used to carry the NZP PTRS, the ZP PTRS RS is used to carry the ZP PTRS, and the punctured RE is used to not transmit data or to transmit a zero power signal. For example, the first information includes the number of PTRS REs and the number of ZP PTRS REs. For another example, the first information includes the number of PTRS REs and the number of punctured REs. For another example, the first information includes the number of NZP PTRS REs and the number of ZP PTRS REs. For another example, the first information includes the number of NZP PTRS REs and the number of punctured REs. The communication device also considers ZP PTRS REs or punctured REs in the process of transmitting the PTRS according to the above first information. In the RE corresponding to the data stream of the same transmission layer, the plurality of REs corresponding to the same time domain resource include PTRS REs and punctured REs, so that the PTRS REs can obtain additional power from the punctured REs, avoiding ICI interference between the PTRS REs and the data REs of the data stream. Or, in the RE corresponding to the data stream of the same transmission layer, the plurality of REs corresponding to the same time domain resource include NZP PTRS REs and ZP PTRS REs, so that the NZP PTRS REs can obtain additional power from the ZP PTRS REs, avoiding ICI interference between the NZP PTRS REs and the data REs of the data stream.

[0129] Next, the embodiments of the present application will be described in conjunction with the drawings. Please refer to Figure 3 , Figure 3 This is an embodiment flow diagram of a reference signal transmission method in the embodiments of the present application. The present application proposes a PTRS transmission method, which can be applied to a communication device. The method includes:

[0130] Scheme 1: When the communication device is a terminal device.

[0131] S1, according to the first information, the terminal device sends the PTRS to the network device.

[0132] In step S1, the terminal device acquires first information, the first information comprising at least one of: a number of PTRS REs, a number of non-zero power (NZP) PTRS REs, a number of zero power (ZP) PTRS REs, or a number of punctured REs, wherein the PTRS REs are used to carry PTRS, the NZP PTRS REs are used to carry NZP PTRS, the ZP PTRS REs are used to carry ZP PTRS, and the punctured REs are used to not transmit data or to transmit zero power signals.

[0133] The PTRS REs, the NZP PTRS REs, the ZP PTRS REs, and / or the punctured REs use the same time domain resources. For example, the PTRS REs, the NZP PTRS REs, the ZP PTRS REs, and / or the punctured REs are located in the same OFDM symbol; or the PTRS REs, the NZP PTRS REs, the ZP PTRS REs, and / or the punctured REs are carried in the same OFDM symbol; or the PTRS REs, the NZP PTRS REs, the ZP PTRS REs, and / or the punctured REs are transmitted on the same OFDM symbol.

[0134] The PTRS REs, the NZP PTRS REs, the ZP PTRS REs, and / or the punctured REs use the same spatial domain resources. For example, the PTRS REs, the NZP PTRS REs, the ZP PTRS REs, and / or the punctured REs are mapped to the same transmission layer.

[0135] In a possible implementation, the first information comprises: a number of PTRS REs and a number of ZP PTRS REs. The number of PTRS REs is greater than or equal to 1, and the number of ZP PTRS REs is greater than or equal to 1. For example, the first information indicates which REs of a certain data stream are used to carry PTRS (i.e., the number of PTRS REs) and which REs of the data stream are used to carry ZP PTRS (i.e., the number of ZP PTRS REs) on the same OFDM symbol. According to the first information, the PTRS is sent, so that the PTRS obtains additional power from the ZP PTRS REs.

[0136] In another possible implementation, the first information includes: a number of PTRS REs and a number of punctured REs. The number of PTRS REs is greater than or equal to 1, and the number of punctured REs is greater than or equal to 1. For example, the first information indicates which REs on the same OFDM symbol are used to carry PTRS (i.e., the number of PTRS REs) and which REs on the same OFDM symbol are punctured (i.e., the number of punctured REs) for a certain data stream. The PTRS is transmitted according to the first information, so that the PTRS obtains extra power from the punctured REs.

[0137] In another possible implementation, the first information includes: a number of NZP PTRS REs and a number of ZP PTRS REs. The number of NZP PTRS REs is greater than or equal to 1, and the number of ZP PTRS REs is greater than or equal to 1. For example, the first information indicates which REs on the same OFDM symbol are used to carry NZP PTRS (i.e., the number of NZP PTRS REs) and which REs on the same OFDM symbol are used to carry ZP PTRS (i.e., the number of ZP PTRS REs) for a certain data stream. The PTRS is transmitted according to the first information, so that the PTRS obtains extra power from the ZP PTRS REs.

[0138] In another possible implementation, the first information includes: a number of NZP PTRS REs and a number of punctured REs. For example, the first information indicates which REs on the same OFDM symbol are used to carry NZP PTRS (i.e., the number of NZP PTRS REs) and which REs on the same OFDM symbol are punctured (i.e., the number of punctured REs) for a certain data stream. The PTRS is transmitted according to the first information, so that the PTRS obtains extra power from the punctured REs.

[0139] Optionally, the first information can further include at least one of the following: index information of the PTRS RE, index information of the NZP PTRS RE, index information of the ZP PTRS RE, or index information of the punctured RE. The index information can be a number of the RE.

[0140] Further, the OFDM symbol carrying the PTRS RE, the NZP PTRS RE, the ZP PTRS RE, and / or the punctured RE is further used to carry a data RE, and the data RE is used to transmit data or a non-zero power signal.

[0141] In an implementation, the extra power obtained by the PTRS according to the first information can be expressed as follows:

[0142] The transmission power of the PTRS is related to the ZP PTRS REs, or the transmission power of the PTRS is related to the punctured REs:

[0143] The ratio of the transmission power of the PTRS REs to the transmission power of the data REs satisfies:

[0144] P PTRS / P data = 10log 10 (Num RE);

[0145] wherein P PTRS is the transmission power of the PTRS REs, P data is the transmission power of the data REs, and Num RE is the number of the punctured REs or the number of the ZP PTRS REs.

[0146] Or, the ratio of the transmission power of the data REs to the transmission power of the PTRS REs satisfies:

[0147] P data / P PTRS = -10log 10 (Num RE);

[0148] wherein P PTRS is the transmission power of the PTRS REs, and P data is the transmission power of the data REs.

[0149] In another implementation, the PTRS is transmitted according to the first information, so that the additional power obtained by the PTRS can be expressed as:

[0150] The transmission power of the PTRS is related to the ZP PTRS REs, or the transmission power of the PTRS is related to the punctured REs:

[0151] The power ratio coefficient of the transmission power of the PTRS REs to the transmission power of the data REs satisfies:

[0152]

[0153] wherein P is the power ratio coefficient of the transmission power of the PTRS REs to the transmission power of the data REs, and Num RE is the number of the punctured REs or the number of the ZP PTRS REs.

[0154] Or, the power ratio coefficient of the transmission power of the data REs to the transmission power of the PTRS REs is:

[0155]

[0156] wherein P A power ratio coefficient of a transmission power of the data RE and a transmission power of the PTRS RE.

[0157] Alternatively, an absolute value of the power ratio coefficient of the transmission power of the data RE and the transmission power of the PTRS RE and the power ratio coefficient of the transmission power of the PTRS RE and the transmission power of the data RE satisfies:

[0158] |a| = 10log 10 (Num RE), where |a| is the absolute value.

[0159] Next, taking an example in which the first information includes the number of PTRS REs and the number of punctured REs, the relationship between the PTRS REs and the punctured REs on the same OFDM symbol is introduced.

[0160] In one example, as shown in Figure 4 , Figure 4 is a schematic diagram of the PTRS REs and the punctured REs in the embodiments of the present application. Taking an example in which a data stream is mapped to a transmission layer (layer) 1 of a PUSCH, the data stream is transmitted on an OFDM 2. According to the indication of the first information, a plurality of REs located on the OFDM 2 include a plurality of data REs, one PTRS RE, and one punctured RE, where the punctured RE is located in the vicinity of the PTRS RE (i.e., the punctured RE and the PTRS RE are adjacent on a subcarrier). The terminal device transmits the PTRS on the PUSCH according to the first information.

[0161] In another example, in combination with Figure 4 , taking an example in which a data stream is mapped to a transmission layer (layer) 1 of a PDSCH, the data stream is transmitted on an OFDM 2. According to the indication of the first information, a plurality of REs located on the OFDM 2 include a plurality of data REs, one PTRS RE, and one punctured RE, where the punctured RE is located in the vicinity of the PTRS RE (i.e., the punctured RE and the PTRS RE are adjacent on a subcarrier). The terminal device receives the PTRS transmitted by the network device on the PDSCH according to the first information.

[0162] In one example, as shown in Figure 5 , Figure 5 is another schematic diagram of the PTRS REs and the punctured REs in the embodiments of the present application. Taking an example in which a data stream is mapped to a transmission layer (layer) 1 of a PUSCH, the data stream is transmitted on an OFDM 2. According to the indication of the first information, a plurality of REs located on the OFDM 2 include a plurality of data REs, one PTRS RE, and two punctured REs, where the punctured REs are located in the vicinity of the PTRS RE (i.e., the punctured REs and the PTRS RE are adjacent on a subcarrier). The terminal device transmits the PTRS on the PUSCH according to the first information.

[0163] In another example, in combination with Figure 5 For example, a data stream is mapped to layer 1 of PDSCH, and is transmitted on OFDM 2. According to the indication of the first information, a plurality of REs located on OFDM 2 include a plurality of data REs, one PTRS RE and two punctured REs, wherein the punctured REs are adjacent to the PTRS RE in the subcarrier (i.e., the punctured REs are adjacent to the PTRS RE in the subcarrier). The terminal device receives the PTRS transmitted by the network device on the PDSCH according to the first information.

[0164] In an example, as Figure 6 shown, Figure 6 is another schematic diagram of the PTRS RE and the punctured RE in the embodiments of the present application. For example, a data stream is mapped to layer 1 of PUSCH, and is transmitted on OFDM 2. According to the indication of the first information, a plurality of REs located on OFDM 2 include a plurality of data REs, two PTRS REs and four punctured REs, wherein each PTRS RE has two punctured REs adjacent thereto (i.e., the punctured REs are adjacent to the PTRS RE in the subcarrier). The terminal device transmits the PTRS on the PUSCH according to the first information.

[0165] In another example, in combination with Figure 6 For example, a data stream is mapped to layer 1 of PDSCH, and is transmitted on OFDM 2. According to the indication of the first information, a plurality of REs located on OFDM 2 include a plurality of data REs, two PTRS REs and four punctured REs, wherein each PTRS RE has two punctured REs adjacent thereto (i.e., the punctured REs are adjacent to the PTRS RE in the subcarrier). The terminal device transmits the PTRS on the PUSCH according to the first information. The terminal device receives the PTRS transmitted by the network device on the PDSCH according to the first information.

[0166] In an example, as Figure 7 shown, Figure 7 is another schematic diagram of the PTRS RE and the punctured RE in the embodiments of the present application. For example, a data stream is mapped to layer 1 of PUSCH, and is transmitted on OFDM 2. According to the indication of the first information, a plurality of REs located on OFDM 2 include a plurality of data REs, one PTRS RE and six punctured REs, wherein the PTRS RE has three punctured REs adjacent thereto in the frequency domain (i.e., the punctured REs are adjacent to the PTRS RE in the subcarrier). The terminal device transmits the PTRS on the PUSCH according to the first information.

[0167] In another example, in combination withFigure 7 For example, a data stream is mapped to layer 1 of a PDSCH and is transmitted on OFDM 2. According to the indication of the first information, a plurality of REs on OFDM 2 include a plurality of data REs, one PTRS RE and six punctured REs, where the PTRS RE has three punctured REs on one side in the frequency domain (i.e., the punctured REs are adjacent to the PTRS RE in the subcarrier). The terminal device transmits the PTRS on the PUSCH according to the first information. The terminal device receives the PTRS transmitted by the network device on the PDSCH according to the first information.

[0168] It should be noted that the above-mentioned Figures 4-7 The above-mentioned scheme does not limit the DMRS transmitted on OFDM 1. On OFDM 1 of layer 1, the DMRS RE (carrying the DMRS) and the punctured RE (or the ZP DMRS RE, used to carry the ZP DMRS) can be as Figures 4-7 The above-mentioned scheme includes the DMRS RE (carrying the DMRS) and the punctured RE (or the ZP DMRS RE, used to carry the ZP DMRS), and can also be as Figure 8 As shown, only the DMRS RE is included. Figure 8 Another schematic diagram of the PTRS RE and the punctured RE in the embodiments of the present application.

[0169] Optionally, since the PTRS is transmitted according to the first information, the PTRS RE (or the NZP PTRS RE) carrying the PTRS can obtain additional power from the punctured RE (or the ZP PTRS RE) to perform power boosting. The transmission power of the PTRS RE can be much higher than the transmission power of the data RE, and therefore the OOB signal generated by the PTRS RE (or the NZP PTRS RE) can also be much higher than the data RE. In order to solve the above-mentioned problem, the PTRS RE (or the NZP PTRS RE) can be filtered separately to suppress the influence of the OOB generated by the PTRS RE (or the NZP PTRS RE) on the data RE.

[0170] In a possible implementation, according to the first information, a first sequence is first determined, the first sequence including PTRS REs or NZP PTRS REs. Second, oversampling processing is performed on the first sequence to generate a PTRS. The oversampling processing includes: performing oversampling processing on the PTRS REs (or NZP PTRS REs) by using puncturing REs between the PTRS REs (or NZP PTRS REs) and data REs in a frequency domain, ZP PTRS REs, or guard band REs. Signals carried by the PTRS REs (or NZP PTRS REs) are copied to the puncturing REs, the ZP PTRS REs, or the guard band REs. The guard band refers to a frequency range reserved in a communication system to prevent mutual interference between different frequency signals, and specifically refers to a frequency range reserved between two adjacent radio frequency bands, which is not used for data transmission. Third, the PTRS is transmitted.

[0171] In another possible implementation, after the first sequence is determined according to the first information, oversampling processing is performed on the first sequence to generate a second sequence. Then, filtering processing is performed on the second sequence to generate a PTRS. The filtering processing is as follows:

[0172] The second sequence is multiplied by a third sequence to generate the PTRS, the third sequence including N filter coefficients, N being a number of the puncturing REs or a number of the ZP PTRS REs, N being an integer greater than or equal to 1. N refers to a number of puncturing REs or a number of ZP PTRS REs that use the same time domain resource and the same space domain resource as the PTRS REs (or NZP PTRS REs). For example, the PTRS REs (or NZP PTRS REs) and the puncturing REs or the ZP PTRS REs are located in a same OFDM symbol and a same data stream of a transmission layer.

[0173] For ease of understanding, refer to Figure 9 , Figure 9 FIG. 1 is a schematic diagram of oversampling and filtering processing on a first sequence in an embodiment of the present application. In combination with Figure 9 FIG. 1 is a schematic diagram of oversampling and filtering processing on a first sequence in an embodiment of the present application. In combination with

[0174]

[0175] wherein s is the first sequence, 1 N is a column vector with a length of N and elements all being 1, is the second sequence, is the third sequence, for PTRS, "°" is Hadamard Product, for Kronecker product.

[0176] It should be noted that in the scheme 1, the PTRS sent by the terminal device is carried in the PUSCH.

[0177] Scheme 2: when the communication device is a network device.

[0178] S2, according to the first information, the network device sends the PTRS to the terminal device.

[0179] The process of the network device sending the PTRS to the terminal device is similar to the process of the terminal device sending the PTRS to the network device, in other words, step S2 is similar to step S1, which will not be described here.

[0180] It should be noted that in the scheme 2, the PTRS sent by the network device is carried in the PDSCH.

[0181] In the embodiments of the present application, the process of the communication device sending the PTRS according to the first information also considers ZP PTRS RE or puncturing RE. In the RE corresponding to the data stream of the same transmission layer, the plurality of REs corresponding to the same time domain resource include the PTRS RE and the puncturing RE, so that the PTRS RE can obtain additional power from the puncturing RE, avoiding the ICI interference between the PTRS RE and the data RE of the data stream. Or, in the RE corresponding to the data stream of the same transmission layer, the plurality of REs corresponding to the same time domain resource include the NZP PTRS RE and the ZP PTRS RE, so that the NZP PTRS RE can obtain additional power from the ZP PTRS RE, avoiding the ICI interference between the NZP PTRS RE and the data RE of the data stream. This method is not limited by the number of data streams, and can also improve the transmission power of the PTRS when the rank is 1, ensuring the phase noise estimation accuracy. In addition, the transmission power of the PTRS can also be improved for the partially coherent terminal device or the incoherent terminal device, ensuring the phase noise estimation accuracy.

[0182] The above describes the present application from the perspective of method, and the other embodiments provided by the present application will be further described below.

[0183] Please refer to Figure 10An implementation of a communication device provided in the present application is shown in the figure, which includes a processing unit 1001 and a transceiver unit 1002. The communication device 1000 can implement the functions of the communication device (including the communication device, etc.) in the above method embodiments, and thus can also achieve the beneficial effects possessed by the above method embodiments. In the embodiments of the present application, the communication device 1000 can be a first communication device, or an integrated circuit or element inside the first communication device, such as a chip. The following embodiments take the communication device 1000 as the first communication device as an example for description.

[0184] In an example, the communication device 1000 is applied to a first communication device, and the communication device 1000 includes:

[0185] The transceiver unit 1002 is configured to transmit a phase tracking reference signal (PTRS) according to first information, wherein the first information includes at least one of the following:

[0186] The first information includes at least one of the following: a number of PTRS resource elements (REs), a number of non-zero power (NZP) PTRS REs, a number of zero power (ZP) PTRS REs, or a number of punctured REs, wherein the PTRS REs are used to carry the PTRS, the NZP PTRS REs are used to carry NZP PTRS, the ZP PTRS REs are used to carry ZP PTRS, and the punctured REs are used to not transmit data or to transmit a zero power signal.

[0187] In a possible implementation, the PTRS REs, the NZP PTRS REs, the ZP PTRS REs, and / or the punctured REs use the same time domain resource;

[0188] The PTRS REs, the NZP PTRS REs, the ZP PTRS REs, and / or the punctured REs use the same spatial domain resource.

[0189] In a possible implementation, the PTRS REs, the NZP PTRS REs, the ZP PTRS REs, and / or the punctured REs are located in the same orthogonal frequency division multiplexing (OFDM) symbol;

[0190] Alternatively, the PTRS REs, the NZP PTRS REs, the ZP PTRS REs, and / or the punctured REs are transmitted on the same OFDM symbol.

[0191] In a possible implementation, the PTRS REs, the NZP PTRS REs, the ZP PTRS REs, and / or the punctured REs are mapped to the same transmission layer.

[0192] In one possible implementation, the OFDM symbol carrying the PTRS RE, the NZP PTRS RE, the ZP PTRS RE, and / or the punched RE is also used to carry a data RE, which is used to transmit data or to transmit a non-zero power signal.

[0193] In one possible implementation, the transmit power of the PTRS is related to the ZP PTRS RE, or the transmit power of the PTRS is related to the punched RE;

[0194] The ratio of the transmit power of the PTRS RE to the transmit power of the data RE satisfies:

[0195] P PTRS / P data =10log 10 (Num RE);

[0196] Among them, P PTRS P is the transmit power of the PTRS RE. data The transmit power of the data RE is Num RE, where Num RE is the number of the punched REs or the number of ZP PTRS REs;

[0197] Alternatively, the ratio of the transmit power of the data RE to the transmit power of the PTRS RE satisfies:

[0198] P data / P PTRS = -10log 10 (Num RE);

[0199] Among them, P PTRS P is the transmit power of the PTRS RE. data The transmit power of the data RE.

[0200] In one possible implementation, the transmit power of the PTRS is related to the ZP PTRS RE, or the transmit power of the PTRS is related to the punched RE;

[0201] The power ratio coefficient between the transmit power of the PTRS RE and the transmit power of the data RE satisfies:

[0202]

[0203] in, The power ratio coefficient between the transmit power of the PTRS RE and the transmit power of the data RE is given; Num RE represents the number of punched REs or the number of ZP PTRS REs.

[0204] Alternatively, a power ratio coefficient of the transmission power of the data RE and the transmission power of the PTRS RE is:

[0205]

[0206] wherein, is a power ratio coefficient of the transmission power of the data RE and the transmission power of the PTRS RE.

[0207] In a possible implementation manner,

[0208] The processing unit 1001 is configured to determine a first sequence according to the first information, the first sequence comprising the PTRS RE or the NZP PTRS RS.

[0209] The processing unit 1001 is further configured to perform oversampling processing on the first sequence to generate the PTRS.

[0210] The transceiver unit 1002 is further configured to transmit the PTRS.

[0211] In a possible implementation manner,

[0212] The processing unit 1001 is configured to perform oversampling processing on the first sequence to generate a second sequence.

[0213] The processing unit 1001 is further configured to perform filtering processing on the second sequence to generate the PTRS.

[0214] In a possible implementation manner,

[0215] The processing unit 1001 is further configured to multiply the second sequence by a third sequence to generate the PTRS, the third sequence comprising N filtering coefficients, N being the number of the punctured REs or the number of the ZP PTRS REs, and N being greater than or equal to 1.

[0216] In a possible implementation manner,

[0217] The processing unit 1001 is further configured to generate the PTRS by using the following method, comprising:

[0218]

[0219] wherein s is the first sequence, 1 N is a column vector with a length of N and all elements being 1, is the second sequence, is the third sequence, is the PTRS.

[0220] Referring to Figure 11 Another schematic structural diagram of the communication apparatus 1100 is provided in the present application, and the communication apparatus 1100 at least includes an input / output interface 1102. The communication apparatus 1100 can be a chip or an integrated circuit.

[0221] Optionally, the communication apparatus further includes a logic circuit 1101.

[0222] The input / output interface 1102 in the communication apparatus 1100 can include an input interface and an output interface. Figure 10 The transceiver unit 1002 shown in the figure can be a communication interface, which can be Figure 11 The transceiver unit 1002 shown in the figure can be a communication interface, which can be

[0223] The logic circuit 1101 and the input / output interface 1102 can also perform other steps and achieve corresponding beneficial effects, which are not described here.

[0224] In a possible implementation manner, Figure 10 The processing unit 1001 shown in the figure can be Figure 11 The logic circuit 1101 in the communication apparatus 1100.

[0225] Optionally, the logic circuit 1101 can be a processing apparatus, and the functions of the processing apparatus can be partially or entirely implemented through software.

[0226] Optionally, the processing apparatus can include a memory and a processor, wherein the memory is used to store a computer program, and the processor reads and executes the computer program stored in the memory to perform the corresponding processing and / or steps in any one of the method embodiments.

[0227] Optionally, the processing apparatus can only include the processor. The memory for storing the computer program is located outside the processing apparatus, and the processor is connected with the memory through a circuit / wire to read and execute the computer program stored in the memory. The memory and the processor can be integrated together or can be physically independent of each other.

[0228] Optionally, the processing device can be one or more chips, or one or more integrated circuits. For example, the processing device can be one or more field-programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), system on chips (SoCs), central processor units (CPUs), network processors (NPs), digital signal processors (DSPs), microcontroller units (MCUs), programmable logic devices (PLDs), or other integrated chips, or any combination of the above chips or processors, etc.

[0229] Please refer to Figure 12 The communication device 1200 involved in the above embodiments provided for the embodiments of the present application, and the communication device 1200 can be specifically the communication device in the above embodiments as the communication device.

[0230] A possible logical structure diagram of the communication device 1200, which can include but is not limited to at least one processor 1201 and a communication port 1202.

[0231] Further optionally, the device can also include at least one of a memory 1203 and a bus 1204, and in the embodiments of the present application, the at least one processor 1201 is used to control and process the actions of the communication device 1200.

[0232] In addition, the processor 1201 can be a central processor unit, a general processor, a digital signal processor, an application specific integrated circuit, a field-programmable gate array or other programmable logic device, a transistor logic device, a hardware component or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in combination with the disclosure of the present application. The processor can also be a combination of computing functions, such as one or more microprocessor combinations, combinations of digital signal processors and microprocessors, etc. Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0233] It should be noted that, Figure 12The communication device 1200 shown can be specifically used to implement the steps implemented by the communication device in the foregoing method embodiments, and achieve the corresponding technical effects of the communication device, Figure 12 The specific implementation of the communication device can be referred to the description in the foregoing method embodiments, which will not be repeated here.

[0234] Please refer to Figure 13 The structure of the communication device 1300 involved in the foregoing embodiments provided for the embodiments of the present application is shown in the structural schematic diagram of the communication device 1300, which can be specifically the communication device in the foregoing embodiments. The structure of the communication device can be referred to Figure 13 The structure shown.

[0235] The communication device 1300 includes at least one processor 1310 and at least one network interface 1340. Further optionally, the communication device further includes at least one memory 1320, at least one transceiver 1330 and one or more antennas 1350. The processor 1310, the memory 1320, the transceiver 1330 and the network interface 1340 are connected, for example, through a bus, which in the embodiments of the present application can include various interfaces, transmission lines or buses, etc., which are not limited in the embodiments. The antenna 1350 is connected to the transceiver 1330. The network interface 1340 is used for the communication device to communicate with other communication devices through a communication link. For example, the network interface 1340 can include the network interface between the communication device and the core network device, such as the S1 interface, and the network interface can include the network interface between the communication device and other communication devices (such as other communication devices or core network devices), such as the X2 or Xn interface.

[0236] The processor 1310 is mainly used for processing communication protocols and communication data, and controlling the whole communication device, executing software programs, processing data of software programs, such as for supporting the communication device to perform the actions described in the embodiments. The communication device can include a baseband processor and a central processor, the baseband processor is mainly used for processing communication protocols and communication data, and the central processor is mainly used for controlling the whole communication device, executing software programs, and processing data of software programs. Figure 13The processor 1310 in the communication device can integrate the functions of a baseband processor and a central processor. Those skilled in the art can understand that the baseband processor and the central processor can also be independent processors interconnected by a bus or the like. Those skilled in the art can understand that the communication device can include multiple baseband processors to accommodate different network standards, and the communication device can include multiple central processors to enhance its processing capability. Various components of the communication device can be connected by various buses. The baseband processor can also be referred to as a baseband processing circuit or a baseband processing chip. The central processor can also be referred to as a central processing circuit or a central processing chip. The functions of processing communication protocols and communication data can be built into the processor or stored in the memory in the form of a software program, and the processor executes the software program to implement the baseband processing function.

[0237] The memory is mainly used for storing software programs and data. The memory 1320 can exist independently and be connected to the processor 1310. Alternatively, the memory 1320 can be integrated with the processor 1310, for example, in a chip. The memory 1320 can store program codes for implementing the technical solutions of the embodiments of the present application and be controlled to execute by the processor 1310. Various computer programs executed can also be regarded as a driver of the processor 1310.

[0238] Figure 13 Only one memory and one processor are shown. In an actual communication device, multiple processors and multiple memories can exist. The memory can also be referred to as a storage medium or a storage device, etc. The memory can be a storage element on the same chip as the processor, that is, an on-chip storage element, or an independent storage element, and the embodiments of the present application do not limit this.

[0239] The transceiver 1330 can be configured to support the receiving or transmitting of radio frequency signals between the communication device and a terminal. The transceiver 1330 can be connected to the antenna 1350. The transceiver 1330 includes a transmitter Tx and a receiver Rx. Specifically, one or more antennas 1350 can receive radio frequency signals, the receiver Rx of the transceiver 1330 is configured to receive the radio frequency signals from the antenna and convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and provide the digital baseband signals or digital intermediate frequency signals to the processor 1310 for further processing, such as demodulation processing and decoding processing, by the processor 1310. In addition, the transmitter Tx in the transceiver 1330 is also configured to receive modulated digital baseband signals or digital intermediate frequency signals from the processor 1310, and convert the modulated digital baseband signals or digital intermediate frequency signals into radio frequency signals, and transmit the radio frequency signals through one or more antennas 1350. Specifically, the receiver Rx can selectively perform one or more levels of down-mixing processing and analog-to-digital conversion processing on the radio frequency signals to obtain digital baseband signals or digital intermediate frequency signals, and the order of the down-mixing processing and the analog-to-digital conversion processing can be adjustable. The transmitter Tx can selectively perform one or more levels of up-mixing processing and digital-to-analog conversion processing on the modulated digital baseband signals or digital intermediate frequency signals to obtain radio frequency signals, and the order of the up-mixing processing and the digital-to-analog conversion processing can be adjustable. The digital baseband signals and the digital intermediate frequency signals can be collectively referred to as digital signals.

[0240] The transceiver 1330 can also be referred to as a transceiving unit, a transceiver, a transceiving device, etc. Optionally, the devices in the transceiving unit for implementing the receiving function can be regarded as a receiving unit, and the devices in the transceiving unit for implementing the transmitting function can be regarded as a transmitting unit, that is, the transceiving unit includes the receiving unit and the transmitting unit, the receiving unit can also be referred to as a receiver, an input port, a receiving circuit, etc., and the transmitting unit can be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0241] It should be noted that, Figure 13 The communication device 1300 shown can be specifically configured to implement the steps implemented by the communication device in the foregoing method embodiments, and achieve the corresponding technical effects of the communication device, Figure 13 The specific implementation of the communication device 1300 shown can be referred to the description in the foregoing method embodiments, which will not be repeated here. The embodiments of the present application also provide a computer readable storage medium storing one or more computer execution instructions, when the computer execution instructions are executed by a processor, the processor executes the method of the possible implementation manner of the communication device as in the foregoing embodiments.

[0242] The embodiment of the present application further provides a computer program product (or computer program) storing one or more computers, when the computer program product is executed by the processor, the processor executes the method of the possible implementation manners of the communication device.

[0243] The embodiment of the present application further provides a chip system, which comprises at least one processor, and is used for supporting the communication device to implement the functions involved in the possible implementation manners of the communication device. Optionally, the chip system further comprises an interface circuit, which provides program instructions and / or data for the at least one processor. In a possible design, the chip system can further comprise a memory, which is used for storing necessary program instructions and data of the communication device. The chip system can be composed of a chip, or can comprise the chip and other discrete devices, and the communication device can be the communication device in the method embodiments.

[0244] The embodiment of the present application further provides a communication system, which comprises the communication device in any of the foregoing embodiments.

[0245] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented by other means. For example, the device embodiments described above are merely illustrative, for example, the division of units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0246] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, can be located in one place, or can be distributed on a plurality of network units. According to actual needs, part or all of the units can be selected to achieve the purpose of the embodiment scheme.

[0247] In addition, each of the functional units in the various embodiments of the present application can be integrated in one processing unit, or each unit can exist physically independently, or two or more units can be integrated in one unit. The integrated unit can be implemented in the form of hardware or in the form of a software functional unit. When the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application, essentially or in the form of a contribution, or all or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the various embodiments of the method of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

Claims

1. A method for transmitting a reference signal, characterized in that, The method is applied to a communication device, and the method includes: Based on the first information, a phase tracking reference signal PTRS is transmitted, wherein the first information includes at least one of the following: The first information includes at least one of the following: the number of PTRS resource units (REs), the number of non-zero power NZP PTRS REs, the number of zero power ZP PTRS REs, or the number of punctured REs, wherein the PTRS REs are used to carry the PTRS, the NZP PTRS REs are used to carry NZP PTRS, the ZP PTRS REs are used to carry ZP PTRS, and the punctured REs are used to either not transmit data or to transmit zero-power signals.

2. The method according to claim 1, characterized in that, The PTRS RE, the NZP PTRS RE, the ZP PTRS RS, and / or the punch RE use the same time-domain resources; The PTRS RE, the NZP PTRS RE, the ZP PTRS RS, and / or the punched RE use the same spatial resources.

3. The method according to claim 2, characterized in that, The PTRS RE, the NZP PTRS RE, the ZPPTRS RS, and / or the punched RE use the same time-domain resources, including: The PTRS RE, the NZP PTRS RE, the ZP PTRS RE and / or the punched RE are located in the same orthogonal frequency division multiplexing OFDM symbol; Alternatively, the PTRS RE, the NZP PTRS RE, the ZP PTRS RE, and / or the punched RE are transmitted on the same OFDM symbol.

4. The method according to claim 2, characterized in that, The PTRS RE, the NZP PTRS RE, the ZPPTRS RS, and / or the punched RE use the same spatial resources, including: The PTRS RE, the NZP PTRS RE, the ZP PTRS RS, and / or the punctured RE are mapped to the same transport layer.

5. The method according to claim 3 or 4, characterized in that, The OFDM symbol carrying the PTRS RE, the NZP PTRS RE, the ZP PTRS RE and / or the punched RE is also used to carry a data RE, which is used to transmit data or to transmit a non-zero power signal.

6. The method according to any one of claims 1-5, characterized in that, The transmit power of the PTRS is related to the ZPPTRS RE, or the transmit power of the PTRS is related to the punch RE; The ratio of the transmit power of the PTRS RE to the transmit power of the data RE satisfies: P PTRS / P data =10log 10 (Num RE); Among them, P PTRS P is the transmit power of the PTRS RE. data The transmit power of the data RE is Num RE, where Num RE is the number of the punched REs or the number of ZP PTRS REs; Alternatively, the ratio of the transmit power of the data RE to the transmit power of the PTRS RE satisfies: P data / P PTRS =-10log 10 (Num RE); Among them, P PTRS P is the transmit power of the PTRS RE. data The transmit power of the data RE.

7. The method according to any one of claims 1-5, characterized in that, The transmit power of the PTRS is related to the ZPPTRS RE, or the transmit power of the PTRS is related to the punch RE; The power ratio coefficient between the transmit power of the PTRS RE and the transmit power of the data RE satisfies: in, The power ratio coefficient between the transmit power of the PTRS RE and the transmit power of the data RE is given; NumRE is the number of the punched REs or the number of the ZP PTRS REs. Alternatively, the power ratio coefficient between the transmit power of the data RE and the transmit power of the PTRS RE is: in, This is the power ratio coefficient between the transmit power of the data RE and the transmit power of the PTRS RE.

8. The method according to any one of claims 1-3, characterized in that, Based on the first information, the PTRS is sent, including: Based on the first information, a first sequence is determined, the first sequence including the PTRS RE or the NZP PTRSRS; The first sequence is oversampled to generate the PTRS; Send the PTRS.

9. The method according to claim 8, characterized in that, The first sequence is oversampled to generate the PTRS, including: The first sequence is oversampled to generate the second sequence; The second sequence is filtered to generate the PTRS.

10. The method according to claim 9, characterized in that, The second sequence is filtered to generate the PTRS, including: The second sequence is multiplied by the third sequence to generate the PTRS. The third sequence includes N filter coefficients, where N is the number of punched REs or the number of ZP PTRS REs, and N is greater than or equal to 1.

11. The method according to claim 10, characterized in that, The PTRS is generated using the following method: Where s is the first sequence, 1 N It is a column vector of length N with all elements being 1. For the second sequence, For the third sequence, For the PTRS.

12. A communication device, characterized in that, The device includes a transceiver unit and a processing unit, and the communication device is used to perform the method of any one of claims 1-11.

13. A communication system, characterized in that, The communication system includes a communication device; The communication system is used to perform the method of any one of claims 1-11.

14. A communication device, characterized in that, The communication device includes a processor and a memory, the memory being used to store program code, and the processor being used to invoke the program code in the memory to cause the communication device to perform the method as described in any one of claims 1-11.

15. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions that, when executed on a processor, perform the method as described in any one of claims 1-11.

16. A computer program product, characterized in that, Includes a computer program that, when executed by a processor, performs the method as described in any one of claims 1-11.

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