COMMUNICATION METHOD, TERMINAL DEVICE, AND NETWORK DEVICE

Abstract

The present application provides a communication method, a terminal device, and a network device. The communication method includes: a terminal device determining PTRS information based on a DMRS configuration; and a terminal device determining transmission parameters of the PTRS based on the PTRS information, where the PTRS information includes one or more of PTRS power boost value information, an association relationship between a PTRS port and a DMRS port, and an information length of the association indication between the PTRS port and the DMRS port in the DCI, and the DMRS configuration includes a frequency-domain OCC length. The number of DMRS ports that can be supported by different frequency-domain OCC lengths in one OFDM symbol may differ, i.e., the number of DMRS ports that can be supported by different DMRS configurations in one OFDM symbol may differ.

Description

[Technical Field]

[0001] The present application relates to the field of communications technology, and in particular to a communication method, a terminal device, and a network device. [Background technology]

[0002] With the development of communication technology, the number of demodulation reference signal (DMRS) ports that can be transmitted in one orthogonal frequency division multiplexing (OFDM) symbol is increasing. For example, in Rel-15, uplink DMRS ports can use a frequency-domain orthogonal cover code (OCC) with a length of 2 to ensure orthogonality. When the frequency-domain OCC has a length of 2, up to four or six DMRS ports can be transmitted in one OFDM symbol. Meanwhile, in Rel-18, a further DMRS extension was introduced to the communication system, which can support a frequency-domain OCC with a length of 4, thereby enabling up to eight or twelve DMRS ports to be transmitted in one OFDM symbol. In this case, the number of DMRS ports that can be supported varies depending on the OCC length in one OFDM symbol, and therefore the power boost value of the corresponding phase tracking reference signal (PTRS) and the number of DMRS ports that can be associated as candidates for the PTRS port also vary. The related art does not provide an appropriate solution for how to indicate PTRS information corresponding to different OCC lengths. Summary of the Invention [Problem to be solved by the invention]

[0003] The present application provides a communication method, a terminal device, and a network device. [Means for solving the problem]

[0004] A first aspect provides a communication method, the communication method including: a terminal device determining PTRS information based on a DMRS configuration; and a terminal device determining transmission parameters of the PTRS based on the PTRS information, the PTRS information including one or more of PTRS power boost value information, an association relationship between a PTRS port and a DMRS port, and an information length of an association indication between a PTRS port and a DMRS port in a DCI, and the DMRS configuration including a length of a frequency-domain OCC.

[0005] A second aspect provides a communication method, the communication method including: a network device determining PTRS information based on a DMRS configuration; and the network device determining transmission parameters of the PTRS based on the PTRS information, the PTRS information including one or more of PTRS power boost value information, an association relationship between a PTRS port and a DMRS port, and an information length of an association indication between a PTRS port and a DMRS port in a DCI, and the DMRS configuration including a length of a frequency-domain OCC.

[0006] A third aspect provides a terminal device, the terminal device including: a first determining unit configured to determine PTRS information based on a DMRS configuration; and a second determining unit configured to determine a transmission parameter of the PTRS based on the PTRS information, the PTRS information including one or more of PTRS power boost value information, an association relationship between a PTRS port and a DMRS port, and an information length of an association indication between a PTRS port and a DMRS port in a DCI, and the DMRS configuration including a length of a frequency-domain OCC.

[0007] A fourth aspect provides a network device, including: a third determining unit configured to determine PTRS information based on a DMRS configuration; and a fourth determining unit configured to determine transmission parameters of the PTRS based on the PTRS information, where the PTRS information includes one or more of PTRS power boost value information, an association relationship between a PTRS port and a DMRS port, and an information length of an association indication between a PTRS port and a DMRS port in a DCI, and the DMRS configuration includes a length of a frequency-domain OCC.

[0008] A fifth aspect provides a terminal device, the terminal device including a processor and a memory, the memory configured to store one or more computer programs, the processor configured to invoke the computer programs in the memory to cause the terminal device to perform some or all of the steps of the method according to the first aspect.

[0009] A sixth aspect provides a network device, the network device including a processor and a memory, the memory configured to store one or more computer programs, and the processor configured to invoke the computer programs in the memory to cause the network device to perform some or all of the steps of the method of the second aspect.

[0010] According to a seventh aspect, an embodiment of the present application provides a communication system, the communication system including the terminal device and / or the network device described above. In another possible design, the communication system may further include other devices that interact with the terminal device or the network device in an aspect according to the embodiment of the present application.

[0011] According to an eighth aspect, an embodiment of the present application provides a computer-readable storage medium storing a computer program that causes a terminal device and / or a network device to execute some or all of the steps of the methods according to the above aspects.

[0012] According to a ninth aspect, an embodiment of the present application provides a computer program product, the computer program product including a non-transitory computer-readable storage medium having a computer program stored thereon, the computer program operable to cause a terminal device and / or a network device to perform some or all of the steps of the method according to each of the above aspects. In some embodiments, the computer program product may be a software installation package.

[0013] According to a tenth aspect, an embodiment of the present application provides a chip, the chip including a memory and a processor, wherein the processor can call and execute a computer program from the memory to implement some or all of the steps described in the methods according to the above aspects. [Effects of the Invention]

[0014] The number of DMRS ports that can be supported by different frequency-domain OCC lengths in one OFDM symbol may be different, i.e., the number of DMRS ports that can be supported by different DMRS configurations in one OFDM symbol may be different. Based on the method of the present application, a communication device can determine appropriate PTRS information based on the DMRS configuration to determine PTRS transmission parameters, thereby avoiding unnecessary DCI signaling overhead and information redundancy. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a schematic diagram of a wireless communication system applied to an embodiment of the present application; [Figure 2A] FIG. 1 is a diagram illustrating an example of a DMRS. [Figure 2B] FIG. 1 is a diagram illustrating an example of a DMRS. [Figure 3] 1 is a flowchart illustrating a communication method according to an embodiment of the present application. [Figure 4] FIG. 1 is a structural diagram of a terminal device according to an embodiment of the present application; [Figure 5] FIG. 1 is a structural diagram illustrating a network device according to an embodiment of the present application. [Figure 6] 1 is a structural diagram showing a device for communication according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0016] The technical solutions of the present application will be described below with reference to the drawings.

[0017] 1 illustrates a wireless communication system 100 according to an embodiment of the present application. The wireless communication system 100 may include communication devices. The communication devices may include, for example, a network device 110 and / or a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 may provide communication coverage in a specific geographic area and communicate with the terminal device 120 located within the coverage area.

[0018] Although FIG. 1 exemplarily illustrates one network device and two terminal devices, alternatively, the wireless communication system 100 may include multiple network devices, and the coverage range of each network device may include a different number of terminal devices, and the embodiments of the present application are not limited thereto.

[0019] Optionally, the wireless communication system 100 may further include other network entities, such as a network controller, a mobility management entity, etc., and the embodiments of the present application are not limited thereto.

[0020] It should be noted that the technical solutions according to the embodiments of the present application may be applied to various communication systems, such as a 5th generation (5G) system or new radio (NR), a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, etc. The technical solutions according to the present application may also be applied to future communication systems, such as a 6th generation mobile communication system or a satellite communication system.

[0021] A terminal device according to an embodiment of the present application may also be referred to as a user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user equipment. A terminal device according to an embodiment of the present application may be a device that provides voice and / or data connectivity to a user, and may be used to connect people, objects, and devices, such as a handheld device or an in-vehicle device with wireless connectivity. The terminal device according to the embodiment of the present application may be a mobile phone, a tablet PC (Pad), a notebook PC, a palmtop PC, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. Alternatively, the UE may function as a base station. For example, the UE may function as a scheduling entity that provides sidelink signals between UEs in vehicle-to-everything (V2X) or device-to-device (D2D) communications. For example, a cellular phone and a car communicate with each other via sidelink signals. Cellular phones and smart home devices communicate with each other and relay communication signals without going through base stations.

[0022] A network device according to an embodiment of the present application may be a device configured to communicate with a terminal device. The network device may be called an access network device or a radio access network device, and the network device may be, for example, a base station. The network device according to an embodiment of the present application may be a radio access network (RAN) node (or device) that allows a terminal device to access a wireless network. The term "base station" may broadly cover or be interchangeable with various names such as a Node B (Node B), evolved base station (eNB), next generation base station (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master eNB (MeNB), secondary eNB (SeNB), multi-standard radio (MSR) node, home base station, network controller, access node, radio node, access point (AP), transmitting node, transceiving node, base band unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), and positioning node. The base station may be a macro base station, a micro base station, a relay node, a donor node, or a combination thereof. The base station may be a communication module, a modem, or a chip provided in the above device or apparatus.The base station may be a mobile switching center, a device performing base station functions in D2D, V2X, or machine-to-machine (M2M) communications, a network-side device in a 6G network, a device performing base station functions in a future communication system, etc. The base station may support networks of the same or different access technologies. The embodiments of the present application do not limit the specific technology and device form used for the network device.

[0023] A base station may be fixed or mobile. For example, a helicopter or drone may be configured as a mobile base station, and one or more cells may move depending on the location of the mobile base station. In another example, a helicopter or drone may be configured as a device that communicates with other base stations.

[0024] In some configurations, the network device according to the embodiments of the present application may refer to a CU or a DU, or the network device includes a CU and a DU. The gNB may further include an AAU.

[0025] The network device and the terminal device may be located indoors or outdoors, on land, including handheld or vehicle-mounted, on the water surface, or on an airplane, balloon, or satellite in the air. The embodiments of the present application do not limit the scene in which the network device and the terminal device are located.

[0026] It should be noted that all or part of the functions of the communication device according to the present application may be realized by software functions running on hardware, or by virtualization functions implemented on a platform (for example, a cloud platform).

[0027] In some communication systems (e.g., NR systems), DMRS may be classified into forward DMRS and additional DMRS. Forward DMRS is usually located in the first few OFDM symbols of a time slot. Additional DMRS is a duplication of forward DMRS and is used to ensure performance in high-speed scenes. Front DMRS may occupy one or two OFDM symbols configured by a network device.

[0028] Some communication systems (e.g., NR systems) support two different DMRS types, Type 1 and Type 2, and the resource occupancy methods for the different types are different. Hereinafter, the DMRS types of Type 1 and Type 2 will be described as examples based on FIGS. 2A and 2B.

[0029] FIG. 2A illustrates a Type-1 DMRS. As shown in FIG. 2A, one OFDM symbol in each physical resource block (PRB) can support two code division multiplexing (CDM) groups. Each CDM group may include six subcarriers. Each CDM group can support two ports. Orthogonality between the two ports can be maintained by the OCC. For example, the OCC used by one port on a different carrier may be [+1 +1 +1 +1 +1], and the OCC used by the other port may be [+1 -1 +1 -1 +1 -1]. In this way, the Type-1 DMRS can support up to four orthogonal ports in one OFDM symbol and up to eight orthogonal ports in two OFDM symbols (a time domain orthogonal cover code (TD-OCC) can be used between the two OFDM symbols). Specifically, the first CDM group of the first DMRS symbol may include ports {1000, 1001}, the second CDM group may include ports {1002, 1003}, the first CDM group of the second DMRS symbol may include ports {1004, 1005}, and the second CDM group may include ports {1006, 1007}.

[0030] FIG. 2B illustrates a Type-2 DMRS. As shown in FIG. 2B, one OFDM symbol of each PRB can support three CDM groups, each of which can include four adjacent subcarriers. Each CDM group can support two ports, and orthogonality between the two ports can be maintained by an OCC. For example, the OCC used by one port on different carriers can be [+1 +1 +1 +1], and the OCC used by the other port can be [+1 -1 +1 -1]. In this way, a Type-2 DMRS can support up to six orthogonal ports in one OFDM symbol and up to 12 orthogonal ports in two OFDM symbols (TD-OCC can be used between the two OFDM symbols). Specifically, the first CDM group of the first DMRS symbol may include ports {1000, 1001}, the second CDM group may include ports {1002, 1003}, the third CDM group may include ports {1004, 1005}, the first CDM group of the second DMRS symbol may include ports {1006, 1007}, the second CDM group may include ports {1008, 1009}, and the third CDM group may include ports {1010, 1011}.

[0031] In some embodiments, a terminal device can support uplink transmissions from up to four antenna ports. To support uplink transmissions in frequency range 2 (FR2), one to two PTRS ports may be configured in the terminal device. Each PTRS port may be associated with a different transport layer / DMRS. A PTRS may be used for phase tracking and adjustment of the associated transport layer / DMRS to ensure the performance of DMRS channel estimation and data demodulation.

[0032] For a fully coherent codebook, all transport layer / DMRS ports may be associated with the same PTRS port. In this case, only one PTRS port is configured in the network device. The PTRS port uses the same sequence, frequency domain resource, and precoding matrix as the associated DMRS port. The DMRS port associated with the PTRS port may be used to determine the transmission scheme of the PTRS.

[0033] When partially coherent and non-coherent codebooks are configured, the number of PTRS ports actually transmitting is determined by the transmit precoding matrix indicator (TPMI) and the number of transport layers, where physical uplink shared channel (PUSCH) antenna ports 1000 and 1002 and the DMRS (transport layer) transmitted on these two ports are associated with PTRS port 0 (i.e., the phase estimation results on the PTRS ports may be used for the PUSCH and DMRS transmitted on these two antenna ports), and PUSCH antenna ports 1001 and 1003 and the DMRS (transport layer) transmitted on these two ports are associated with PTRS port 1.

[0034] When there are multiple DMRS ports transmitted on an antenna port, which DMRS port is actually associated with the corresponding PTRS port needs to be determined by the association indication between the DMRS port and the PTRS port in the DCI.

[0035] The following describes the association indication between DMRS ports and PTRS ports with reference to Tables 1 and 2, taking the DMRS in the Rel-15 protocol as an example. When the number of PTRS ports is 1, two bits of DCI signaling indicate which DMRS port is associated with the PTRS port, i.e., the association indication between DMRS ports and PTRS ports is two bits. Table 1 shows the DMRS association indication when a single PTRS port is configured. As shown in Table 1, the two bits may be used to indicate values ​​0 to 3, and the DMRS ports corresponding to 0 to 3 are shown in Table 1. When the number of PTRS ports is two, two bits of DCI signaling indicate the DMRS ports associated with each PTRS port, i.e., the association indication between DMRS ports and PTRS ports is two bits. Table 2 shows the DMRS association indication when two PTRS ports are configured. The two bits of the association indication between the DMRS port and the PTRS port include one most significant bit (MSB) and one least significant bit (LSB), as shown in Table 2. The DMRS port corresponding to the value of the MSB and the value of the LSB is shown in Table 2.

[0036] [Table 1]

[0037] [Table 2]

[0038] Since one PTRS port may be associated with multiple transport layers, the power of the PTRS needs to be adjusted according to the number of configured transport layers to ensure that the power in different OFDM symbols is the same. Taking Rel-15 DMRS as an example, the number of PUSCH transport layers

number

[0039] [Table 3]

[0040] With the development of communication technology, the number of DMRS ports that can be transmitted in one OFDM symbol increases. For example, in Rel-15, uplink DMRS ports can use a frequency-domain OCC with a length of 2 to ensure orthogonality. When the frequency-domain OCC has a length of 2, up to four (Type 1 DMRS) or six (Type 2 DMRS) DMRS ports can be transmitted in one OFDM symbol. In Rel-18, a further DMRS extension is introduced to the communication system, which can support a frequency-domain OCC with a length of 4, allowing up to eight (Type 1 DMRS) or 12 (Type 2 DMRS) DMRS ports to be transmitted in one OFDM symbol. In this case, the number of DMRS ports that can be supported by different OCC lengths in one OFDM symbol varies, and therefore the corresponding PTRS power boost value and the number of DMRS ports that can be associated as candidates for the PTRS port also vary. If the PTRS power boost value information or the association relationship between the PTRS port and the DMRS port is designed according to the maximum number of DMRS ports, some information may become redundant in some cases. Also, if the length of the PTRS-DMRS port association indication information is determined according to the maximum number of uplink DMRS ports, unnecessary DCI signaling overhead may be incurred.

[0041] For example, assuming that the maximum number of uplink DMRS ports is 8, the PTRS power boost value table and / or the PTRS port and DMRS port association table are designed so that the number of DMRS ports is 8. However, if the number of uplink DMRS ports is actually 4, the corresponding information in the above two tables indicating that the number of DMRS ports is 5 to 8 is redundant. Furthermore, if the PTRS port and DMRS port association table is designed so that the number of DMRS ports is 8, the number of bits of the PTRS-DMRS port association indication in the DCI needs to support a DMRS port number of 8. Therefore, if the number of uplink DMRS ports is actually 4, some bits of the PTRS port and DMRS port association indication in the DCI may not be used, which may cause unnecessary DCI signaling overhead.

[0042] To address the above problem, the present application provides a communication method.

[0043] 3 is a flowchart of a communication method according to an embodiment of the present application. The method shown in FIG. 3 may be performed by a terminal device and a network device. The method shown in FIG. 3 may include steps S310 to S340.

[0044] In step S310, the terminal device determines PTRS information based on the DMRS configuration.

[0045] In step S320, the network device determines the PTRS information based on the DMRS configuration.

[0046] The DMRS configuration may include a length of a frequency-domain OCC. The length of the frequency-domain OCC may be, for example, 2 or 4. Note that the communication device may determine the PTRS information based on whether the length of the frequency-domain OCC is 2 or 4.

[0047] In some embodiments, the length of the frequency-domain OCC can be configured by higher layer signaling. For example, whether the length of the frequency-domain OCC is 2 or 4 may be configured by higher layer signaling from a network device to a terminal device. In some embodiments, the length of the frequency-domain OCC may be indicated by a DCI.

[0048] In some embodiments, the length of the frequency-domain OCC may be described by the DMRS. For example, the length of the frequency-domain OCC may be described as Rel-15 DMRS or Rel-18 Extended DMRS. The length of the frequency-domain OCC that can be supported by Rel-15 DMRS may be 2. The length of the frequency-domain OCC that can be supported by Rel-18 Extended DMRS may be 4.

[0049] In some embodiments, the DMRS configuration may further include a DMRS type, which may be, for example, Type 1 or Type 2. The DMRS type may be configured by higher layer signaling.

[0050] The PTRS information may include one or more of the following: PTRS power boost value information, association relationship between PTRS ports and DMRS ports, and information length of the association indication between PTRS ports and DMRS ports in the DCI. Each of these pieces of information will be described below.

[0051] The PTRS power boost value information may be used to indicate the status of the PTRS power boost value. For example, the PTRS power boost value information may include a correspondence between a transport layer number and a PTRS power boost value. Alternatively, the PTRS power boost value information may include a correspondence between a codebook coherence setting and a PTRS power boost value. Alternatively, the PTRS power boost value information may include a correspondence between a power boost setting and a PTRS power boost value.

[0052] In one embodiment, the PTRS power boost value may indicate only PTRS power boost values ​​corresponding to transport layer numbers less than the maximum transport layer number. For example, if the maximum transport layer number is 8, the PTRS power boost value information may indicate only PTRS power boost values ​​when the transport layers are 1 to 4, or the PTRS power boost value information may indicate only PTRS power boost values ​​when the transport layers are 1 to 6. In one implementation, the PTRS power boost value may indicate PTRS power boost values ​​corresponding to all possible transport layer numbers. Continuing with the example of the maximum transport layer number being 8, the PTRS power boost value information may indicate PTRS power boost values ​​when the transport layers are 1 to 8. Based on the above implementation, the communication device may determine, based on the DMRS configuration, whether the PTRS power boost value information indicates only the PTRS power boost value when the number of transport layers is 1 to 4, or only the PTRS power boost value when the number of transport layers is 1 to 6, or only the PTRS power boost value when the number of transport layers is 1 to 8.

[0053] The present application does not limit the maximum number of transport layers to a specific value. Although the above description exemplifies a maximum number of transport layers of 8, in some embodiments, the maximum number of transport layers may be 6 or 12.

[0054] However, the present application does not limit the representation method of the PTRS power boost value information. In some embodiments, the PTRS power boost value information may be represented by a table. For example, the PTRS power boost value information may be a PTRS power boost value table.

[0055] For ease of explanation, the association relationship between a PTRS port and a DMRS port will be referred to as a PTRS-DMRS port association relationship hereinafter. The PTRS-DMRS port association relationship may be used to indicate the association between a PTRS port and a DMRS port. For example, the PTRS-DMRS port association relationship may include an association indication between a PTRS port and a DMRS port in a DCI and a correspondence relationship between one or more DMRS ports that are candidate-associated with the PTRS port. Alternatively, the PTRS-DMRS port association relationship may be used to indicate one DMRS port from one or more DMRS ports that are candidate-associated with the PTRS port. Alternatively, the PTRS-DMRS port association relationship may indicate one or more DMRS ports that are candidate-associated with the PTRS port.

[0056] Note that in some embodiments, "candidately associated" may be referred to as "potentially associated", i.e., the PTRS-DMRS port association relationship may include a status enumeration of all DMRS ports that are potentially associated with the PTRS port, and the DMRS port that is actually associated with the PTRS port may be one of the listed cases.

[0057] The DMRS port actually associated with a PTRS port may be indicated in the association relationship between the corresponding PTRS port and DMRS port by a PTRS port-DMRS port association indication. For convenience of explanation, the association indication between a PTRS port and a DMRS port will be hereinafter referred to as a PTRS-DMRS port association indication.

[0058] In some embodiments, the PTRS-DMRS port association relationship may include a correspondence between a PTRS-DMRS port association indication and one or more DMRS ports that are candidate-associated with the PTRS port. For example, the PTRS-DMRS port association relationship may include a correspondence between a PTRS-DMRS port association indication and two DMRS ports that are candidate-associated with the PTRS port. Alternatively, the PTRS-DMRS port association relationship may include a correspondence between a PTRS-DMRS port association indication and three DMRS ports that are candidate-associated with the PTRS port. Alternatively, the PTRS-DMRS port association relationship may include a correspondence between a PTRS-DMRS port association indication and four DMRS ports that are candidate-associated with the PTRS port. Alternatively, the PTRS-DMRS port association relationship may include a correspondence between a PTRS-DMRS port association indication and six DMRS ports that are candidate-associated with the PTRS port. Alternatively, the PTRS-DMRS port association relationship may include a correspondence relationship between the PTRS-DMRS port association indication and eight DMRS ports that are candidate-associated with the PTRS port. Based on the above implementation, step S310 or step S320 may include determining, by the communication device, whether the PTRS-DMRS port association relationship includes a correspondence relationship between the PTRS-DMRS port association indication and some DMRS ports that are candidate-associated with the PTRS port.

[0059] Note that the present application does not limit the representation method of the PTRS-DMRS port association relationship. In some embodiments, the PTRS-DMRS port association relationship may be represented by a table. For example, the PTRS-DMRS port association relationship may be a PTRS-DMRS port association table.

[0060] In some embodiments, the network device may determine a PTRS-DMRS port association indication in the DCI based on the PTRS information, and transmit the DCI. The terminal device may receive the DCI, analyze the PTRS-DMRS port association indication in the DCI based on the information length of the PTRS-DMRS port association indication, and then determine a DMRS port associated with the PTRS port based on the PTRS-DMRS port association relationship.

[0061] In some embodiments, the information length of the PTRS-DMRS port association indication may be, for example, 2 bits or 3 bits. Based on this embodiment, the communication device may determine whether the information length of the PTRS-DMRS port association indication is 2 bits or 3 bits based on the DMRS configuration.

[0062] In some embodiments, the PTRS-DMRS port association indication bits may include a least significant bit (LSB) and a most significant bit (MSB), where the LSB may indicate a less significant bit in the PTRS-DMRS port association indication bits and the MSB may indicate a more significant bit in the PTRS-DMRS port association indication bits.

[0063] In step S330, the terminal device determines PTRS transmission parameters based on the PTRS information.

[0064] In step S340, the network device determines PTRS transmission parameters based on the PTRS information.

[0065] The PTRS transmission parameters may be parameters related to the PTRS transmission. For example, the PTRS transmission parameters may include one or more of the following: a transmit power of the PTRS, a power difference between the PTRS and the DMRS, a DMRS port associated with the PTRS port, a sequence of the PTRS, and a precoding scheme for the PTRS, etc.

[0066] As mentioned above, different frequency-domain OCC lengths in one OFDM symbol support different numbers of DMRS ports, i.e., different DMRS configurations in one OFDM symbol support different numbers of DMRS ports. Based on the method of the present application, a communication device can determine appropriate PTRS information based on the DMRS configuration to determine PTRS transmission parameters, thereby avoiding unnecessary DCI signaling overhead and information redundancy.

[0067] Note that the PTRS information may be further determined based on information other than the DMRS configuration, and this application is not limited thereto. In some embodiments, the PTRS information may be further determined based on the number K of antenna groups. Here, K may be the number of currently configured antenna groups or the number of antenna groups reported by the terminal device. K may be a positive integer. In some embodiments, the PTRS information may be further determined based on the number of PTRS ports. For example, the network device may pre-configure the number of PTRS ports based on the current codebook subset or the number of PTRS ports currently required. In some embodiments, the PTRS information may be further configured based on the codebook subset.

[0068] In some embodiments, FIG. 3 may further include step S350.

[0069] In step S350, the terminal device transmits the PTRS. Correspondingly, the network device may receive the PTRS.

[0070] In some embodiments, the terminal device may determine one or more of a PTRS sequence, a comment resource, and a precoding matrix based on a DMRS port associated with a PTRS port and transmit the PTRS.

[0071] The following describes how to determine the PTRS power boost value information, the PTRS-DMRS port association relationship, and the information length of the PTRS-DMRS port association indication in the DCI based on the DMRS configuration, with reference to the following embodiments. Note that the embodiments of the present application may be implemented independently or in combination.

[0072] First, we will explain how to determine the PTRS power boost value information based on the DMRS configuration.

[0073] In some embodiments, when the length of the frequency domain OCC is 2, the PTRS power boost value information may only indicate the PTRS power boost value when the number of transport layers is 1 to 4, or the PTRS power boost value information may only indicate the PTRS power boost value when the number of transport layers is 1 to 6.

[0074] In some embodiments, the PTRS power boost value information may be further determined based on the DMRS type. For example, if the frequency domain OCC length is 2 and the DMRS type is Type 1, the PTRS power boost value information may indicate only the PTRS power boost value when the number of transport layers is 1 to 4. If the frequency domain OCC length is 2 and the DMRS type is Type 2, the PTRS power boost value information may indicate only the PTRS power boost value when the number of transport layers is 1 to 6.

[0075] Taking the PTRS power boost value information as an example, if the frequency domain OCC length is 2 and the DMRS type is Type 1, the PTRS power boost value table may be as shown in Table 4. If the frequency domain OCC length is 2 and the DMRS type is Type 2, the PTRS power boost value table may be as shown in Table 5. M in Tables 4 and 5 indicates the number of currently configured PTRS ports. M may be 1 or 2.

[0076] [Table 4]

[0077] [Table 5]

[0078] In some embodiments, regardless of whether the DMRS type is Type 1 or Type 2, when the length of the frequency-domain OCC is 2, the same PTRS power boost value information is used. For example, when the length of the frequency-domain OCC is 2, the PTRS power boost value information only indicates the PTRS power boost value when the transport layer number is 1 to 6. In this case, when the DMRS type is Type 1, only the PTRS power boost values ​​corresponding to the transport layer numbers 1 to 4 in the PTRS power boost value information may be used. Continuing with the PTRS power boost table as an example, when the length of the frequency-domain OCC is 2, the PTRS power boost value tables may all be determined as shown in Table 5.

[0079] In some embodiments, the PTRS power boost value information may be further determined based on the number K of antenna groups. In other words, when the value of K is different, the PTRS power boost value used may also be different. Tables 4 and 5 are examples when K=2. Considering the constraints of the description, this application omits the description of cases when the length of the frequency domain OCC is 2 and K is other values.

[0080] In some embodiments, when the length of the frequency domain OCC is 4, the PTRS power boost value information may indicate the PTRS power boost value when the transport layer number is 1 to 8.

[0081] In some embodiments, when the value of the number of antenna groups K is different, the PTRS power boost value information may also be different. For example, assuming that the PTRS power boost value information is a PTRS power boost value table, when the length of the frequency domain OCC is 4, the PTRS power boost value table may be as shown in Table 6 or Table 7. Table 6 shows an example where K=2, and Table 7 shows an example where K=4. In Tables 6 and 7, M indicates the currently configured number of PTRS ports. M may be 1 or 2. Considering the constraints described above, Table 6 will be written as Table 6A and Table 6B, and Table 7 will be written as Table 7A and Table 7B. That is, Table 6A and Table 6B should be used in combination, and Table 7A and Table 7B should be used in combination. Alternatively, Table 6A and Table 6B should be used in combination as one table, and Table 7A and Table 7B should be used in combination as one table.

[0082] [Table 6A]

[0083] [Table 6B]

[0084] [Table 7A]

[0085] [Table 7B]

[0086] Note that the values ​​in Tables 4 to 7 can be adjusted due to different calculation methods. For example, 7.78 can be 7.77, and 1.77 can be 1.76 or 1.78. Furthermore, Tables 4 to 7 above only show one representation method for the power boost value information, and other representation methods may actually be used. The power boost values ​​corresponding to different transport layers obtained using other representation methods may be the same as the values ​​obtained from Tables 4 to 7.

[0087] Based on the above method, the communication device can determine the power boost value of the PTRS port when supporting uplink 8-antenna port transmission, thereby ensuring that the power is constant in different OFDM symbols under different DMRS settings (meeting the implementation requirements of the terminal hardware) and enhancing the measurement performance at the PTRS port through power boosting.

[0088] Note that the power boost setting in the PTRS power boost value information may be indicated by the network device through higher layer signaling. For example, if the frequency domain OCC length is 2 and the DMRS type is Type 1, the terminal device may determine the PTRS power boost value information as shown in Table 4. Furthermore, the terminal device may determine the corresponding PTRS power boost value based on the power boost setting indicated by the higher layer signaling and Table 4.

[0089] In some embodiments, the terminal device may determine a power boost value for a PTRS port based on the PTRS power boost value information and the current transport layer number. Further, the terminal device may determine a power boost value from the PTRS power boost value information based on a power boost setting indicated by a network device through higher layer signaling and the current transport layer number.

[0090] In some embodiments, the terminal device may determine the transmit power of the PTRS based on the power boost value of the PTRS port. For example, the terminal device may determine the transmit power of the PTRS or the power difference between the PTRS and the DMRS based on the power boost value and the transmit power of the DMRS. In some embodiments, the terminal device may perform downlink phase tracking and channel estimation based on the transmit power of the PTRS or the power difference between the PTRS and the DMRS.

[0091] In some embodiments, the network device may determine a power boost value for the PTRS port based on the PTRS power boost value information and the current transport layer number.

[0092] In some embodiments, the network device may perform phase tracking based on the detected PTRS and DMRS based on a power boost value for the PTRS port. For example, the network device may perform power or amplitude adjustment on the channel information detected at the PTRS port based on the power boost value, and perform phase tracking in combination with the channel information detected at the DMRS port. For example, assuming the power boost value is 3 dB, the network device may reduce the power of the channel information detected at the PTRS port by 3 dB before using it for phase tracking.

[0093] The following describes, by way of example, how to determine the information length of the PTRS-DMRS port association relationship and / or the PTRS-DMRS port association indication in the DCI based on the DMRS configuration. Note that the communication device may determine the information length of the PTRS-DMRS port association relationship and the PTRS-DMRS port association indication in the DCI simultaneously, or may determine only one of them.

[0094] When the terminal device determines the information length of the PTRS-DMRS port related indication in DCI, it may determine the size of DCI based on the maximum information length among the information lengths corresponding to different frequency domain OCC lengths respectively, and then detect the DCI. For example, an OCC length of 2 corresponds to an information length of 2 bits, and an OCC length of 4 corresponds to an information length of 4 bits. In this case, before the terminal detects the DCI, it is necessary to assume the information length based on 4 bits, thereby determining the total length of the DCI, and then the DCI can be accurately detected.

[0095] Hereinafter, the case where the number of PTRS ports is 1 and the case where the number of PTRS ports is 2 will be described respectively.

[0096] <When the number of PTRS ports is 1> In some implementation forms, when the number of PTRS ports set by the network device is 1, for example, when the current codebook subset is set as a full coherent codebook, the information length of the PTRS-DMRS port related indication and the corresponding PTRS-DMRS port related relationship may be determined according to the following method.

[0097] When the length of the frequency domain OCC is 2, the information length of the PTRS-DMRS port related indication may be 2 bits, and the PTRS-DMRS port related relationship may include the corresponding relationship between the related indication of the PTRS port and the DMRS port in DCI and the 4 DMRS ports associated as candidates with the PTRS port. Alternatively, the information length of the PTRS-DMRS port related indication is 3 bits, and the PTRS-DMRS port related relationship may include the corresponding relationship between the related indication of the PTRS port and the DMRS port in DCI and the 6 DMRS ports associated as candidates with the PTRS port.

[0098] In one embodiment, the communications device may further determine the information length and the corresponding PTRS-DMRS port association relationship based on the DMRS type. For example, if the DMRS type is Type 1, the information length of the PTRS-DMRS port association indication may be 2 bits, and the PTRS-DMRS port association relationship may include a correspondence relationship between an association indication between a PTRS port and a DMRS port and four DMRS ports that are candidate-associated with the PTRS port. In this case, the PTRS-DMRS port association relationship may be, for example, as shown in Table 8. If the DMRS type is Type 2, the information length of the PTRS-DMRS port association indication may be 3 bits, and the PTRS-DMRS port association relationship may include a correspondence relationship between the PTRS-DMRS port association indication and six DMRS ports that are candidate-associated with the PTRS port. In this case, the PTRS-DMRS port association relationship may be, for example, as shown in Table 9.

[0099] In another embodiment, regardless of whether the DMRS type is Type 1 or Type 2, the same PTRS-DMRS port association relationship may be used as long as the length of the frequency-domain OCC is 2. For example, when the length of the frequency-domain OCC is 2, the PTRS-DMRS port association relationship may include a correspondence relationship between the PTRS-DMRS port association indication in the DCI and six DMRS ports that are candidate-associated with the PTRS port. In this case, the PTRS-DMRS port association relationship may be as shown in Table 9. Note that when the DMRS type is Type 1, only the first four DMRS ports in the PTRS-DMRS port association relationship (e.g., the first four rows in Table 9) may be used.

[0100] [Table 8]

[0101] [Table 9]

[0102] If the length of the frequency domain OCC is 4, the information length of the PTRS-DMRS port association indication may be 3 bits, and the PTRS-DMRS port association relationship may include a correspondence relationship between the PTRS-DMRS port association indication and eight DMRS ports that are candidate-associated with the PTRS port. In this case, the PTRS-DMRS port association relationship may be as shown in Table 10.

[0103] [Table 10]

[0104] If the length of the frequency-domain OCC is 4, the information length of the PTRS-DMRS port association indication may be 2 bits, and the PTRS-DMRS port association relationship may include a correspondence relationship between the PTRS-DMRS port association indication and four DMRS ports that are candidate-associated with the PTRS port. Here, the four DMRS ports may correspond to the same codeword. For example, if the number of current codewords is 2, the four DMRS ports may correspond to a codeword with a higher modulation and coding scheme (MCS). In this case, the PTRS-DMRS port association relationship may be as shown in Table 11. If the MCS of two codewords is the same, the four DMRS ports may correspond to the first codeword.

[0105] [Table 11]

[0106] When the length of the frequency domain OCC is 4, the number of DMRS ports associated as candidates to the PTRS may be determined based on upper layer signaling. In other words, whether the PTRS-DMRS port association relationship includes the correspondence between the PTRS-DMRS port association indication and eight or four DMRS ports associated as candidates to the said PTRS port may be determined based on upper layer signaling, and / or whether the information length of the PTRS-DMRS port association indication is 2 bits or 3 bits may be determined based on upper layer signaling.

[0107] In some embodiments, the upper layer signaling may be the association relationship indication information between the PTRS and the DMRS (abbreviated as PTRS-DMRS association relationship indication information), or the indication information enabling uplink layer 8 transmission. For example, with 1-bit PTRS-DMRS association relationship indication information, it may be indicated whether to use Table 10 or Table 11. Further for example, when uplink layer 8 transmission is enabled, Table 10 is used, and when not, Table 8 or Table 9 is used.

[0108] <When the number of PTRS ports is 2> When the number of PTRS ports set by the network device is 2, for example, when the current codebook subset is set as a partial coherent or non-coherent codebook, the information length indicated by the PTRS-DMRS port association indication and the corresponding PTRS-DMRS port association relationship may be determined by the following method.

[0109] In some embodiments, when the length of the frequency domain OCC is 2, the information length of the PTRS-DMRS port association indication may be 2 bits, and the PTRS-DMRS port association relationship may include the correspondence between the PTRS-DMRS port association indication and two DMRS ports associated as candidates to each PTRS port. In this case, the PTRS-DMRS port association relationship may be as shown in Table 12.

[0110] In the tables described in this application, the LSB may indicate the least significant bit in the PTRS-DMRS port association indication bits, and the MSB may indicate the most significant bit in the PTRS-DMRS port association indication bits.

[0111] [Table 12]

[0112] In some embodiments, when the length of the frequency domain OCC is 2, the information length of the PTRS-DMRS port association indication may be 4 bits, and the PTRS-DMRS port association relationship includes a correspondence relationship between the PTRS-DMRS port association indication and three DMRS ports that are candidate-associated with the PTRS port. In this case, the PTRS-DMRS port association relationship may be as shown in Table 13.

[0113] [Table 13]

[0114] In one embodiment, when the length of the frequency domain OCC is 2, the communication device may further determine the information length and the corresponding PTRS-DMRS port association relationship based on the DMRS type. For example, when the DMRS type is Type 1, the information length of the PTRS-DMRS port association indication may be 2 bits, and the PTRS-DMRS port association relationship may include a correspondence relationship between the PTRS-DMRS port association indication and two DMRS ports that are candidate-associated with each PTRS port. In this case, the PTRS-DMRS port association relationship may be as shown in Table 12. In this case, the 2-bit information may be used to indicate DMRS ports that are candidate-associated with different PTRS ports. When the DMRS type is Type 2, the information length of the PTRS-DMRS port association indication may be 4 bits, and the PTRS-DMRS port association relationship may include a correspondence relationship between the PTRS-DMRS port association indication and three DMRS ports that are candidate-associated with each PTRS port. In this case, the PTRS-DMRS port association relationship may be as shown in Table 13. In this case, the first two bits and the last two bits of the four bits may be used to indicate the DMRS ports associated with different PTRS ports, respectively.

[0115] In another embodiment, regardless of whether the DMRS type is Type 1 or Type 2, the same PTRS-DMRS port association indication information length and PTRS-DMRS port association relationship may be used as long as the frequency domain OCC length is 2. In this case, the PTRS-DMRS port association relationship may be as shown in Table 13. In this case, if the DMRS type is Type 1, the communication device may use only the first few states in the PTRS-DMRS port association relationship, i.e., indicate one DMRS port from two DMRS ports that may be associated with each PTRS port.

[0116] In some embodiments, when the length of the frequency-domain OCC is 4, the information length may be 2×log2(N / 2) bits, and the PTRS-DMRS port association relationship may include a correspondence relationship between the PTRS-DMRS port association indication and N / 2 DMRS ports that are candidate associated with each PTRS port, where N is the maximum number of transport layers supported by the current uplink, and the value of N is 4 or 8. The value of N may be set by the network device through higher layer signaling, or may be determined based on a capability report of the terminal device, or may be fixed at 8. When the value of N is 8 and the length of the frequency-domain OCC is 4, the PTRS-DMRS port association relationship may be as shown in Table 14.

[0117] In one embodiment, when the value of N is 4, the PTRS-DMRS port association relationship may be shown by Table 12. When the value of N is 8, the PTRS-DMRS port association relationship may be shown by Table 14.

[0118] In some embodiments, in the 2×log2(N / 2) bit information, the first log2(N) / 2 bits may be used to indicate the DMRS port associated with the first PTRS port (PTRS port0), and the last log2(N) / 2 bits may be used to indicate the DMRS port associated with the second PTRS port (PTRS port1). Alternatively, the first log2(N) / 2 bits may be used to indicate the DMRS port associated with the second PTRS port (PTRS port1), and the last log2(N) / 2 bits may be used to indicate the DMRS port associated with the first PTRS port (PTRS port0).

[0119] [Table 14]

[0120] In some embodiments, when the information length is determined, the terminal device may obtain a corresponding PTRS-DMRS port association indication from the DCI based on the information length.

[0121] In some embodiments, the terminal device may determine a DMRS port associated with a PTRS port based on the PTRS-DMRS port association relationship and the PTRS-DMRS port association indication.

[0122] In some examples, a terminal device determines a PTRS sequence, frequency domain resources, and precoding matrix based on a DMRS port associated with a PTRS port, and transmits the PTRS. In some embodiments, a PTRS port and an associated DMRS port may use the same sequence, frequency domain resources, and precoding matrix.

[0123] In some embodiments, a network device may determine a PTRS sequence and frequency domain resources based on a DMRS port associated with a PTRS port to receive the PTRS.

[0124] It should be noted that Tables 4 to 14 are merely one embodiment of the examples of the present application, and the embodiments and the specific values ​​therein can be adjusted according to actual conditions and are not limited by the present application.

[0125] While the method embodiments according to the present application have been described in detail above, the apparatus embodiments according to the present application will now be described in detail with reference to Figures 4 to 7. Note that the description of the apparatus embodiments corresponds to the description of the method embodiments, so that the previous method embodiments can be referenced for parts that are not described in detail.

[0126] 4 is a structural schematic diagram of a terminal device 400 according to an embodiment of the present application. The terminal device 400 may include a first determining unit 410 and a second determining unit 420.

[0127] The first determining unit 410 is configured to determine PTRS information based on a DMRS configuration. The second determining unit 420 is configured to determine transmission parameters of a PTRS based on the PTRS information. Here, the PTRS information includes one or more of PTRS power boost value information, an association relationship between a PTRS port and a DMRS port, and an information length of an association indication between a PTRS port and a DMRS port in a DCI. Here, the DMRS configuration includes a length of a frequency domain orthogonal cover code (OCC).

[0128] In some embodiments, the DMRS configuration further includes a DMRS type.

[0129] In some embodiments, when the length of the frequency domain OCC is 2, the PTRS power boost value information indicates only the PTRS power boost value when the number of transport layers is 1 to 4, or the PTRS power boost value information indicates only the PTRS power boost value when the number of transport layers is 1 to 6. When the length of the frequency domain OCC is 4, the PTRS power boost value information indicates the PTRS power boost value when the number of transport layers is 1 to 8.

[0130] In some embodiments, if the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the PTRS power boost value information indicates only the PTRS power boost value when the number of transport layers is 1 to 4. If the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the PTRS power boost value information indicates only the PTRS power boost value when the number of transport layers is 1 to 6.

[0131] In some embodiments, when the number of PTRS ports is 1 and the length of the frequency-domain OCC is 2, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port in the DCI and four or six DMRS ports that are associated with the PTRS port as candidates. When the number of PTRS ports is 1 and the length of the frequency-domain OCC is 4, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and eight or four DMRS ports that are associated with the PTRS port as candidates, and four DMRS ports of the eight or four DMRS ports correspond to the same codeword.

[0132] In some embodiments, when the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between an association indication between the PTRS port and the DMRS port and four DMRS ports that are candidate-associated with the PTRS port, and when the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between an association indication between the PTRS port and the DMRS port and six DMRS ports that are candidate-associated with the PTRS port.

[0133] In some embodiments, when the length of the frequency domain OCC is four, the number of DMRS ports to be associated as candidates with the PTRS is determined based on higher layer signaling.

[0134] In some embodiments, when the number of PTRS ports is two and the length of the frequency-domain OCC is two, the association relationship between the PTRS ports and the DMRS ports includes a correspondence relationship between the PTRS port and the DMRS port association indication in the DCI and two or three DMRS ports that are candidate-associated with the PTRS port. When the number of PTRS ports is two and the length of the frequency-domain OCC is four, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the PTRS port and the DMRS port association indication and N / 2 DMRS ports that are candidate-associated with the PTRS port, where N is the maximum number of transport layers supported by the current uplink, and the value of N is 4 or 8.

[0135] In some embodiments, when the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the association relationship between the PTRS port and the DMRS port includes an association indication between the PTRS port and the DMRS port and a correspondence relationship between two DMRS ports that are candidate-associated with the PTRS port, and when the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the association relationship between the PTRS port and the DMRS port includes an association indication between the PTRS port and the DMRS port and a correspondence relationship between three DMRS ports that are candidate-associated with the PTRS port.

[0136] In some embodiments, when the number of PTRS ports is 1, if the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the information length is 2 bits. When the number of PTRS ports is 1, if the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the information length is 3 bits. When the number of PTRS ports is 1, if the length of the frequency domain OCC is 4, the information length is 2 bits or 3 bits.

[0137] In some embodiments, when the length of the frequency domain OCC is four, the information length is determined based on higher layer signaling.

[0138] In some embodiments, the higher layer signaling is indication information of an association relationship between a PTRS and a DMRS, or indication information enabling uplink Layer 8 transmission.

[0139] In some embodiments, when the number of PTRS ports is 2, if the length of the frequency-domain OCC is 2 and the DMRS type is Type 1, the information length is 2 bits. When the number of PTRS ports is 2, if the length of the frequency-domain OCC is 2 and the DMRS type is Type 2, the information length is 4 bits. When the number of PTRS ports is 2, if the length of the frequency-domain OCC is 4, the information length is 2 × log2(N / 2) bits, where N is the maximum number of transport layers supported by the current uplink, and the value of N is 4 or 8.

[0140] In some embodiments, the second determination unit is specifically configured to do one or more of the following: determine a power boost value of a PTRS port based on the PTRS power boost value information and a current transport layer number, where the power boost value is used to determine the transmit power of the PTRS; determine a DMRS port associated with the PTRS port based on an association relationship between the PTRS port and a DMRS port and an association indication between the PTRS port and the DMRS port in a DCI; determine an association indication between the PTRS port and the DMRS port in a DCI based on an information length of the association indication between the PTRS port and the DMRS port, where the association indication between the PTRS port and the DMRS port is used to determine a DMRS port associated with the PTRS port.

[0141] In some embodiments, the terminal device 400 further includes a transmitting unit configured to determine a sequence, a frequency domain resource, and a precoding matrix for the PTRS based on a DMRS port associated with the PTRS port, and transmit the PTRS.

[0142] In some embodiments, the PTRS power boost value information is represented by a table, and / or the association relationship between the PTRS ports and the DMRS ports is represented by a table.

[0143] 5 is a structural schematic diagram of a network device 500 according to an embodiment of the present application. The network device 500 includes a third determining unit 510 and a fourth determining unit 520.

[0144] The third determining unit 510 is configured to determine phase tracking reference signal (PTRS) information based on a demodulation reference signal (DMRS) configuration. The fourth determining unit 520 is configured to determine transmission parameters of a PTRS based on the PTRS information. Here, the PTRS information includes one or more of: PTRS power boost value information, an association relationship between a PTRS port and a DMRS port, and an information length of an association indication between a PTRS port and a DMRS port in downlink control information (DCI). The DMRS configuration includes a length of a frequency domain orthogonal cover code (OCC).

[0145] In some embodiments, the DMRS configuration further includes a DMRS type.

[0146] In some embodiments, when the length of the frequency domain OCC is 2, the PTRS power boost value information indicates only the PTRS power boost value when the number of transport layers is 1 to 4, or the PTRS power boost value information indicates only the PTRS power boost value when the number of transport layers is 1 to 6. When the length of the frequency domain OCC is 4, the PTRS power boost value information indicates the PTRS power boost value when the number of transport layers is 1 to 8.

[0147] In some embodiments, when the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the PTRS power boost value information indicates only the PTRS power boost value when the number of transport layers is 1 to 4, and when the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the PTRS power boost value information indicates only the PTRS power boost value when the number of transport layers is 1 to 6.

[0148] In some embodiments, when the number of PTRS ports is 1 and the length of the frequency-domain OCC is 2, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port in the DCI and four or six DMRS ports that are associated with the PTRS port as candidates. When the number of PTRS ports is 1 and the length of the frequency-domain OCC is 4, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and eight or four DMRS ports that are associated with the PTRS port as candidates, and four DMRS ports of the eight or four DMRS ports correspond to the same codeword.

[0149] In some embodiments, when the length of the frequency-domain OCC is 2 and the DMRS type is Type 1, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between an association indication between the PTRS port and the DMRS port and four DMRS ports that are candidate-associated with the PTRS port. When the length of the frequency-domain OCC is 2 and the DMRS type is Type 2, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between an association indication between the PTRS port and the DMRS port and six DMRS ports that are candidate-associated with the PTRS port.

[0150] In some embodiments, when the length of the frequency domain OCC is four, the number of DMRS ports to be associated as candidates with the PTRS is determined based on higher layer signaling.

[0151] In some embodiments, when the number of PTRS ports is 2 and the length of the frequency-domain OCC is 2, the association relationship between the PTRS ports and the DMRS ports includes a correspondence relationship between the PTRS port and the DMRS port association indication in the DCI and two or three DMRS ports that are candidate-associated with the PTRS port. When the number of PTRS ports is 2 and the length of the frequency-domain OCC is 4, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the PTRS port and the DMRS port association indication and N / 2 DMRS ports that are candidate-associated with the PTRS port. N is the maximum number of transport layers supported by the current uplink, and the value of N is 4 or 8.

[0152] In some embodiments, when the length of the frequency-domain OCC is 2 and the DMRS type is Type 1, the association relationship between the PTRS port and the DMRS port includes an association indication between the PTRS port and the DMRS port and a correspondence relationship between two DMRS ports that are candidate-associated with the PTRS port. When the length of the frequency-domain OCC is 2 and the DMRS type is Type 2, the association relationship between the PTRS port and the DMRS port includes an association indication between the PTRS port and the DMRS port and a correspondence relationship between three DMRS ports that are candidate-associated with the PTRS port.

[0153] In some embodiments, when the number of PTRS ports is 1, if the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the information length is 2 bits. When the number of PTRS ports is 1, if the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the information length is 3 bits. When the number of PTRS ports is 1, if the length of the frequency domain OCC is 4, the information length is 2 bits or 3 bits.

[0154] In some embodiments, when the length of the frequency domain OCC is four, the information length is determined based on higher layer signaling.

[0155] In some embodiments, the higher layer signaling is indication information of an association relationship between a PTRS and a DMRS, or indication information enabling uplink Layer 8 transmission.

[0156] In some embodiments, when the number of PTRS ports is 2, if the length of the frequency-domain OCC is 2 and the DMRS type is Type 1, the information length is 2 bits. When the number of PTRS ports is 2, if the length of the frequency-domain OCC is 2 and the DMRS type is Type 2, the information length is 4 bits. When the number of PTRS ports is 2, if the length of the frequency-domain OCC is 4, the information length is 2 × log2(N / 2) bits, where N is the maximum number of transport layers supported by the current uplink, and the value of N is 4 or 8.

[0157] In some embodiments, the fourth determination unit is specifically configured to do one or more of the following: determine a power boost value of a PTRS port based on the PTRS power boost value information and a current transport layer number, where the power boost value is used to determine the transmit power of the PTRS; determine a DMRS port associated with the PTRS port based on an association relationship between the PTRS port and a DMRS port and an association indication between the PTRS port and the DMRS port in a DCI; determine an association indication between the PTRS port and the DMRS port in a DCI based on an information length of the association indication between the PTRS port and the DMRS port, where the association indication between the PTRS port and the DMRS port is used to determine a DMRS port associated with the PTRS port.

[0158] In some embodiments, the network device 500 further includes a phase tracking unit configured to perform phase tracking based on the detected PTRS and DMRS based on a power boost value of the PTRS port.

[0159] In some embodiments, the PTRS power boost value information is represented by a table, and / or the association relationship between the PTRS ports and the DMRS ports is represented by a table.

[0160] In an alternative embodiment, the transmitting unit may be a transceiver 630, and the first determining unit 410, the second determining unit 420, the third determining unit 430, or the fourth determining unit may be a processor 610. The terminal device 400 or the network device 500 may further include a memory 620, specifically shown in FIG.

[0161] 6 is a structural schematic diagram of a communication device according to an embodiment of the present application. The dashed lines in FIG. 6 indicate that the unit or module is optional. The device 600 may be configured to implement the method described in the above method embodiments. The device 600 may be a chip, a terminal device, or a network device.

[0162] The device 600 may include one or more processors 610. The processor 610 can support the device 600 in implementing the methods described in the method embodiments above. The processor 610 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or the like. The general-purpose processor may be a microprocessor, any common processor, or the like.

[0163] The apparatus 600 may further include one or more memories 620. The memories 620 store programs that, when executed by the processor 610, cause the processor 610 to perform the methods described in the method embodiments above. The memory 620 may be separate from the processor 610 or may be integrated into the processor 610.

[0164] The apparatus 600 may further include a transceiver 630. The processor 610 may communicate with other devices or chips via the transceiver 630. For example, the processor 610 may transmit data to or receive data from other devices or chips via the transceiver 630.

[0165] An embodiment of the present application further provides a computer-readable storage medium configured to store a program, which may be used in a terminal or a network device according to the embodiment of the present application, and the program causes a computer to execute a method executed by the terminal or the network device according to each embodiment of the present application.

[0166] An embodiment of the present application further provides a computer program product, which includes a program, which may be used in a terminal or a network device according to an embodiment of the present application, and which causes a computer to perform a method executed by the terminal or the network device according to each embodiment of the present application.

[0167] The embodiments of the present application further provide a computer program, which may be used in a terminal or a network device according to the embodiments of the present application, causing a computer to execute the method executed by the terminal or the network device according to each embodiment of the present application.

[0168] It should be noted that the terms "system" and "network" in this application may be used interchangeably. Furthermore, the terms used in this application are used only to describe specific embodiments of this application and are not intended to limit this application. Terms such as "first," "second," "third," and "fourth" in the specification, claims, and drawings of this application are intended to distinguish different objects and not to describe a particular order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

[0169] In the embodiments of the present application, "indication" may be a direct indication, an indirect indication, or may indicate an association relationship. For example, A indicating B may indicate that A directly indicates B, for example, B can be obtained by A. Alternatively, A indicating B may indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained by C. Alternatively, A indicating B may indicate that there is an association relationship between A and B.

[0170] In the examples of this application, "B corresponding to A" indicates that B and A are related and B can be determined based on A. However, determining B based on A does not mean determining B based only on A, and B may be determined based on A and / or other information.

[0171] In the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association between the two, or a relationship such as indicating and being indicated, setting and being set, etc.

[0172] In the embodiments of the present application, "predefined" or "preset" may be realized by pre-storing a corresponding code or table in a device (including, for example, a terminal device or a network device), or by other methods used to indicate related information, and the present application does not limit the specific implementation manner. For example, "predefined" may be defined in a protocol.

[0173] In the embodiments of the present application, the "protocol" may refer to a standard protocol in the communication field, and may include, for example, an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application is not limited thereto.

[0174] The term "and / or" in the examples of this application is merely a relational relationship describing related objects, and indicates that three types of relationships may exist. For example, A and / or B may indicate three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this specification basically indicates that the related objects before and after it are in an "or" relationship.

[0175] In various embodiments of the present application, the magnitude of the numbers of the above processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and is not a limitation on the implementation process of the embodiments of the present application.

[0176] It should be noted that in some embodiments of the present application, the disclosed system, device, and method may be realized in other ways. For example, the device embodiments described above are merely illustrative, and the division of the units is merely a logical division of functions. In actual implementation, other division methods may be used. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not implemented. In other respects, the described or discussed couplings, direct couplings, or communication connections with each other may be indirect couplings or communication connections via several interfaces, devices, or units, and may be electrical, mechanical, or other types of couplings.

[0177] The units described above as separate components may or may not be physically separated. The components shown as units may or may not be physical units, i.e., they may be located in one place or distributed across multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the aspects of this embodiment.

[0178] Furthermore, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist physically alone, or two or more units may be integrated into one unit.

[0179] The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, they may be implemented in whole or in part as a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or another programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, radio, microwave, etc.). The computer-readable storage medium may be any available computer-readable medium, or may be a data storage device, such as a server or data center, in which one or more available media are integrated. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital video disc (DVD)), or a semiconductor medium (e.g., a solid state disk (SSD)).

[0180] The above are only specific embodiments of the present application, and the scope of protection of the present application is not limited thereto. Any modifications or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application is governed by the claims.

Claims

1. 1. A communication method comprising: determining phase tracking reference signal (PTRS) information based on a demodulation reference signal (DMRS) configuration by a terminal device; determining a transmission parameter of the PTRS based on the PTRS information by the terminal device; The PTRS information includes one or more of: PTRS power boost value information; an association relationship between a PTRS port and a DMRS port; and an information length of an association indication between a PTRS port and a DMRS port in downlink control information (DCI); The DMRS configuration includes a length of a frequency domain orthogonal cover code (OCC). A communication method comprising:

2. The DMRS configuration further includes a DMRS type.

2. The communication method according to claim 1.

3. When the length of the frequency domain OCC is 2, the PTRS power boost value information indicates only a PTRS power boost value when the number of transport layers is 1 to 4, or the PTRS power boost value information indicates only a PTRS power boost value when the number of transport layers is 1 to 6; When the length of the frequency domain OCC is 4, the PTRS power boost value information indicates a PTRS power boost value when the number of transport layers is 1 to 8.

3. The communication method according to claim 1 or 2.

4. When the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the PTRS power boost value information only indicates a PTRS power boost value when the number of transport layers is 1 to 4; When the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the PTRS power boost value information only indicates a PTRS power boost value when the number of transport layers is 1 to 6.

4. The communication method according to claim 3.

5. If the number of PTRS ports is 1, If the length of the frequency domain OCC is 2, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between an association indication between the PTRS port and the DMRS port in the DCI and four or six DMRS ports that are associated with the PTRS port as candidates; If the length of the frequency domain OCC is 4, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and eight or four DMRS ports that are candidate-associated with the PTRS port, and four DMRS ports among the eight or four DMRS ports correspond to the same codeword.

5. The communication method according to claim 1, wherein the first and second communication paths are connected to each other.

6. When the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and four DMRS ports that are associated with the PTRS port as candidates; When the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and six DMRS ports that are associated with the PTRS port as candidates.

6. The communication method according to claim 5.

7. When the length of the frequency domain OCC is 4, the number of DMRS ports associated as candidates with the PTRS is determined based on higher layer signaling.

6. The communication method according to claim 5.

8. If the number of PTRS ports is 2, If the length of the frequency domain OCC is 2, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between an association indication between the PTRS port and the DMRS port in the DCI and two or three DMRS ports that are associated with the PTRS port as candidates; If the length of the frequency domain OCC is 4, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and N / 2 DMRS ports that are candidate-associated with the PTRS port, where N is the maximum number of transport layers supported by the current uplink, and the value of N is 4 or 8.

5. The communication method according to claim 1, wherein the first and second communication paths are connected to each other.

9. When the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the association relationship between the PTRS port and the DMRS port includes an association indication between the PTRS port and the DMRS port and a correspondence relationship between two DMRS ports that are associated with the PTRS port as candidates; When the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and three DMRS ports that are associated with the PTRS port as candidates.

9. The communication method according to claim 8.

10. If the number of PTRS ports is 1, If the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the information length is 2 bits; If the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the information length is 3 bits; If the length of the frequency domain OCC is 4, the information length is 2 bits or 3 bits. The communication method according to any one of claims 1 to 9.

11. If the length of the frequency domain OCC is 4, the information length is determined based on higher layer signaling. The communication method according to claim 10.

12. The higher layer signaling is PTRS and DMRS association relationship indication information or uplink L8 transmission enabling indication information; 12. The communication method according to claim 7 or 11.

13. If the number of PTRS ports is 2, If the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the information length is 2 bits; If the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the information length is 4 bits; If the length of the frequency domain OCC is 4, the information length is 2×log2(N / 2) bits, where N is the maximum number of transport layers supported by the current uplink, and the value of N is 4 or 8. The communication method according to any one of claims 1 to 9.

14. The step of the terminal device determining a transmission parameter of the PTRS based on the PTRS information includes: the terminal device determining a power boost value of a PTRS port based on the PTRS power boost value information and a current transport layer number, wherein the power boost value is used to determine a transmission power of a PTRS; The terminal device determines a DMRS port associated with a PTRS port based on the association relationship between the PTRS port and the DMRS port and an association indication between the PTRS port and the DMRS port in a DCI; the terminal device determining an association indication between the PTRS port and the DMRS port in a DCI based on an information length of the association indication between the PTRS port and the DMRS port, wherein the association indication between the PTRS port and the DMRS port is used to determine a DMRS port associated with the PTRS port; The communication method according to any one of claims 1 to 13.

15. The terminal device further includes determining a sequence, a frequency domain resource, and a precoding matrix of the PTRS based on a DMRS port associated with the PTRS port, and transmitting the PTRS.

15. The communication method according to claim 14.

16. The PTRS power boost value information is represented by a table; and / or The association relationship between the PTRS ports and the DMRS ports is shown in the table below: The communication method according to any one of claims 1 to 15.

17. 1. A communication method comprising: determining phase tracking reference signal (PTRS) information based on a demodulation reference signal (DMRS) configuration by the network device; determining transmission parameters of the PTRS based on the PTRS information by the network device; The PTRS information includes one or more of: PTRS power boost value information; an association relationship between a PTRS port and a DMRS port; and an information length of an association indication between a PTRS port and a DMRS port in downlink control information (DCI); The DMRS configuration includes a length of a frequency domain orthogonal cover code (OCC). A communication method comprising:

18. The DMRS configuration further includes a DMRS type.

18. The communication method according to claim 17.

19. When the length of the frequency domain OCC is 2, the PTRS power boost value information indicates only a PTRS power boost value when the number of transport layers is 1 to 4, or the PTRS power boost value information indicates only a PTRS power boost value when the number of transport layers is 1 to 6; When the length of the frequency domain OCC is 4, the PTRS power boost value information indicates a PTRS power boost value when the number of transport layers is 1 to 8.

19. A communication method according to claim 17 or 18.

20. When the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the PTRS power boost value information only indicates a PTRS power boost value when the number of transport layers is 1 to 4; When the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the PTRS power boost value information only indicates a PTRS power boost value when the number of transport layers is 1 to 6.

20. The communication method of claim 19.

21. If the number of PTRS ports is 1, If the length of the frequency domain OCC is 2, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between an association indication between the PTRS port and the DMRS port in the DCI and four or six DMRS ports that are associated with the PTRS port as candidates; If the length of the frequency domain OCC is 4, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and eight or four DMRS ports that are candidate-associated with the PTRS port, and four DMRS ports among the eight or four DMRS ports correspond to the same codeword. The communication method according to any one of claims 17 to 20.

22. When the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and four DMRS ports that are associated with the PTRS port as candidates; When the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and six DMRS ports that are associated with the PTRS port as candidates.

22. The communication method of claim 21.

23. If the length of the frequency domain OCC is 4, the number of DMRS ports associated as candidates with the PTRS is determined based on higher layer signaling.

22. The communication method of claim 21.

24. If the number of PTRS ports is 2, If the length of the frequency domain OCC is 2, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between an association indication between the PTRS port and the DMRS port in the DCI and two or three DMRS ports that are associated with the PTRS port as candidates; If the length of the frequency domain OCC is 4, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and N / 2 DMRS ports that are candidate-associated with the PTRS port, where N is the maximum number of transport layers supported by the current uplink, and the value of N is 4 or 8. The communication method according to any one of claims 17 to 20.

25. When the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the association relationship between the PTRS port and the DMRS port includes an association indication between the PTRS port and the DMRS port and a correspondence relationship between two DMRS ports that are associated with the PTRS port as candidates; When the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and three DMRS ports that are associated with the PTRS port as candidates.

25. The communication method of claim 24.

26. If the number of PTRS ports is 1, If the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the information length is 2 bits; If the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the information length is 3 bits; If the length of the frequency domain OCC is 4, the information length is 2 bits or 3 bits. The communication method according to any one of claims 17 to 25.

27. If the length of the frequency domain OCC is 4, the information length is determined based on higher layer signaling.

27. The communication method of claim 26.

28. The higher layer signaling is PTRS and DMRS association relationship indication information or uplink L8 transmission enabling indication information; 28. A communication method according to claim 23 or 27.

29. If the number of PTRS ports is 2, If the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the information length is 2 bits; If the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the information length is 4 bits; If the length of the frequency domain OCC is 4, the information length is 2×log2(N / 2) bits, where N is the maximum number of transport layers supported by the current uplink, and the value of N is 4 or 8. The communication method according to any one of claims 17 to 25.

30. The step of the network device determining transmission parameters of the PTRS based on the PTRS information includes: the network device determining a power boost value for a PTRS port based on the PTRS power boost value information and a current transport layer number, wherein the power boost value is used to determine a transmit power of a PTRS; determining, by the network device, a DMRS port associated with a PTRS port based on the association relationship between the PTRS port and the DMRS port and an association indication between the PTRS port and the DMRS port in a DCI; the network device determining an association indication between the PTRS port and the DMRS port in a DCI based on an information length of the association indication between the PTRS port and the DMRS port, wherein the association indication between the PTRS port and the DMRS port is used to determine a DMRS port associated with the PTRS port; 30. The communication method according to any one of claims 17 to 29.

31. The network device further comprises performing phase tracking based on the detected PTRS and DMRS based on a power boost value of the PTRS port.

31. The communication method of claim 30.

32. The PTRS power boost value information is represented by a table; and / or The association relationship between the PTRS ports and the DMRS ports is shown in the table below: The communication method according to any one of claims 17 to 31.

33. A terminal device, a first determining unit configured to determine phase tracking reference signal (PTRS) information based on a demodulation reference signal (DMRS) configuration; a second determining unit configured to determine transmission parameters of the PTRS based on the PTRS information; The PTRS information includes one or more of: PTRS power boost value information; an association relationship between a PTRS port and a DMRS port; and an information length of an association indication between a PTRS port and a DMRS port in downlink control information (DCI); The DMRS configuration includes a length of a frequency domain orthogonal cover code (OCC). A terminal device characterized in that

34. The DMRS configuration further includes a DMRS type.

34. A terminal device according to claim 33.

35. When the length of the frequency domain OCC is 2, the PTRS power boost value information indicates only a PTRS power boost value when the number of transport layers is 1 to 4, or the PTRS power boost value information indicates only a PTRS power boost value when the number of transport layers is 1 to 6; When the length of the frequency domain OCC is 4, the PTRS power boost value information indicates a PTRS power boost value when the number of transport layers is 1 to 8.

35. A terminal device according to claim 33 or 34.

36. When the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the PTRS power boost value information only indicates a PTRS power boost value when the number of transport layers is 1 to 4; When the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the PTRS power boost value information only indicates a PTRS power boost value when the number of transport layers is 1 to 6.

36. A terminal device according to claim 35.

37. If the number of PTRS ports is 1, If the length of the frequency domain OCC is 2, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between an association indication between the PTRS port and the DMRS port in the DCI and four or six DMRS ports that are associated with the PTRS port as candidates; If the length of the frequency domain OCC is 4, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and eight or four DMRS ports that are candidate-associated with the PTRS port, and four DMRS ports among the eight or four DMRS ports correspond to the same codeword. Terminal device according to any one of claims 33 to 36.

38. When the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and four DMRS ports that are associated with the PTRS port as candidates; When the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and six DMRS ports that are associated with the PTRS port as candidates.

38. A terminal device according to claim 37.

39. If the length of the frequency domain OCC is 4, the number of DMRS ports associated as candidates with the PTRS is determined based on higher layer signaling.

38. A terminal device according to claim 37.

40. If the number of PTRS ports is 2, If the length of the frequency domain OCC is 2, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between an association indication between the PTRS port and the DMRS port in the DCI and two or three DMRS ports that are associated with the PTRS port as candidates; If the length of the frequency domain OCC is 4, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and N / 2 DMRS ports that are candidate-associated with the PTRS port, where N is the maximum number of transport layers supported by the current uplink, and the value of N is 4 or 8. Terminal device according to any one of claims 33 to 36.

41. When the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the association relationship between the PTRS port and the DMRS port includes an association indication between the PTRS port and the DMRS port and a correspondence relationship between two DMRS ports that are associated with the PTRS port as candidates; When the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and three DMRS ports that are associated with the PTRS port as candidates.

41. A terminal device according to claim 40.

42. If the number of PTRS ports is 1, If the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the information length is 2 bits; If the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the information length is 3 bits; If the length of the frequency domain OCC is 4, the information length is 2 bits or 3 bits. Terminal device according to any one of claims 33 to 41.

43. If the length of the frequency domain OCC is 4, the information length is determined based on higher layer signaling.

43. A terminal device according to claim 42.

44. The higher layer signaling is PTRS and DMRS association relationship indication information or uplink L8 transmission enabling indication information; 44. A terminal device according to claim 39 or 43.

45. If the number of PTRS ports is 2, If the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the information length is 2 bits; If the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the information length is 4 bits; If the length of the frequency domain OCC is 4, the information length is 2×log2(N / 2) bits, where N is the maximum number of transport layers supported by the current uplink, and the value of N is 4 or 8. Terminal device according to any one of claims 33 to 41.

46. The second determination unit: determining a power boost value of a PTRS port based on the PTRS power boost value information and a current transport layer number, wherein the power boost value is used to determine a transmission power of a PTRS; determining a DMRS port associated with the PTRS port based on the association relationship between the PTRS port and the DMRS port and an association indication between the PTRS port and the DMRS port in the DCI; determining an association indication between the PTRS port and the DMRS port in a DCI based on an information length of the association indication between the PTRS port and the DMRS port, wherein the association indication between the PTRS port and the DMRS port is used to determine a DMRS port associated with the PTRS port; Terminal device according to any one of claims 33 to 45.

47. a transmitting unit configured to determine a sequence of the PTRS, a frequency domain resource, and a precoding matrix based on a DMRS port associated with the PTRS port, and to transmit the PTRS.

47. A terminal device according to claim 46.

48. The PTRS power boost value information is represented by a table; and / or The association relationship between the PTRS ports and the DMRS ports is shown in the table below: Terminal device according to any one of claims 33 to 47.

49. 1. A network device, comprising: a third determining unit configured to determine phase tracking reference signal (PTRS) information based on a demodulation reference signal (DMRS) configuration; a fourth determining unit configured to determine transmission parameters of a PTRS based on the PTRS information; The PTRS information includes one or more of: PTRS power boost value information; an association relationship between a PTRS port and a DMRS port; and an information length of an association indication between a PTRS port and a DMRS port in downlink control information (DCI); The DMRS configuration includes a length of a frequency domain orthogonal cover code (OCC). A network device comprising:

50. The DMRS configuration further includes a DMRS type.

50. The network device of claim 49.

51. When the length of the frequency domain OCC is 2, the PTRS power boost value information indicates only a PTRS power boost value when the number of transport layers is 1 to 4, or the PTRS power boost value information indicates only a PTRS power boost value when the number of transport layers is 1 to 6; When the length of the frequency domain OCC is 4, the PTRS power boost value information indicates a PTRS power boost value when the number of transport layers is 1 to 8.

51. A network device according to claim 49 or 50.

52. When the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the PTRS power boost value information only indicates a PTRS power boost value when the number of transport layers is 1 to 4; When the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the PTRS power boost value information only indicates a PTRS power boost value when the number of transport layers is 1 to 6.

52. The network device of claim 51.

53. If the number of PTRS ports is 1, If the length of the frequency domain OCC is 2, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between an association indication between the PTRS port and the DMRS port in the DCI and four or six DMRS ports that are associated with the PTRS port as candidates; If the length of the frequency domain OCC is 4, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and eight or four DMRS ports that are candidate-associated with the PTRS port, and four DMRS ports among the eight or four DMRS ports correspond to the same codeword.

53. The network device according to claim 49, wherein the network device is a network device having a plurality of sub-networks.

54. When the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and four DMRS ports that are associated with the PTRS port as candidates; When the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and six DMRS ports that are associated with the PTRS port as candidates.

54. The network device of claim 53.

55. If the length of the frequency domain OCC is 4, the number of DMRS ports associated as candidates with the PTRS is determined based on higher layer signaling.

54. The network device of claim 53.

56. If the number of PTRS ports is 2, If the length of the frequency domain OCC is 2, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between an association indication between the PTRS port and the DMRS port in the DCI and two or three DMRS ports that are associated with the PTRS port as candidates; If the length of the frequency domain OCC is 4, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and N / 2 DMRS ports that are candidate-associated with the PTRS port, where N is the maximum number of transport layers supported by the current uplink, and the value of N is 4 or 8.

53. The network device according to claim 49, wherein the network device is a network device having a plurality of sub-networks.

57. When the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the association relationship between the PTRS port and the DMRS port includes an association indication between the PTRS port and the DMRS port and a correspondence relationship between two DMRS ports that are associated with the PTRS port as candidates; When the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the association relationship between the PTRS port and the DMRS port includes a correspondence relationship between the association indication between the PTRS port and the DMRS port and three DMRS ports that are associated with the PTRS port as candidates.

57. The network device of claim 56.

58. If the number of PTRS ports is 1, If the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the information length is 2 bits; If the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the information length is 3 bits; If the length of the frequency domain OCC is 4, the information length is 2 bits or 3 bits.

58. A network device according to any one of claims 49 to 57.

59. If the length of the frequency domain OCC is 4, the information length is determined based on higher layer signaling.

60. The network device of claim 58.

60. The higher layer signaling is PTRS and DMRS association relationship indication information or uplink L8 transmission enabling indication information; 60. A network device according to claim 55 or 59.

61. If the number of PTRS ports is 2, If the length of the frequency domain OCC is 2 and the DMRS type is Type 1, the information length is 2 bits; If the length of the frequency domain OCC is 2 and the DMRS type is Type 2, the information length is 4 bits; If the length of the frequency domain OCC is 4, the information length is 2×log2(N / 2) bits, where N is the maximum number of transport layers supported by the current uplink, and the value of N is 4 or 8.

58. A network device according to any one of claims 49 to 57.

62. The fourth determination unit: determining a power boost value of a PTRS port based on the PTRS power boost value information and a current transport layer number, wherein the power boost value is used to determine a transmission power of a PTRS; determining a DMRS port associated with the PTRS port based on the association relationship between the PTRS port and the DMRS port and an association indication between the PTRS port and the DMRS port in the DCI; determining an association indication between the PTRS port and the DMRS port in a DCI based on an information length of the association indication between the PTRS port and the DMRS port, wherein the association indication between the PTRS port and the DMRS port is used to determine a DMRS port associated with the PTRS port; 62. The network device according to claim 49, wherein the network device is a network device.

63. a phase tracking unit configured to perform phase tracking based on the detected PTRS and DMRS based on a power boost value of the PTRS port.

63. The network device of claim 62.

64. The PTRS power boost value information is represented by a table; and / or The association relationship between the PTRS ports and the DMRS ports is shown in the table below:

64. The network device according to claim 49, wherein the network device is a network device.

65. A terminal device, a memory and a processor; the memory is configured to store a program; The processor is configured to call a program in the memory to cause the terminal device to perform the communication method according to any one of claims 1 to 16. A terminal device characterized in that

66. 1. A network device, comprising: a memory and a processor; the memory is configured to store a program; The processor is configured to call a program in the memory to cause the network device to perform the communication method according to any one of claims 17 to 32. A network device comprising:

67. 1. An apparatus comprising: a processor configured to call a program from a memory to cause the device to perform the communication method of any one of claims 1 to 32; An apparatus characterized in that

68. A chip, a processor configured to call a program from a memory to cause a device in which the chip is mounted to perform the communication method of any one of claims 1 to 32; A chip characterized by:

69. A program for causing a computer to execute the communication method according to any one of claims 1 to 32 is stored. A computer-readable storage medium comprising:

70. A program for causing a computer to execute the communication method according to any one of claims 1 to 32, 1. A computer program product comprising:

71. causing a computer to execute the communication method according to any one of claims 1 to 32; A computer program characterized by:

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