Transmission method of uplink phase tracking reference signal (PTRS) and communication device

Abstract

The disclosure provides a transmission method of an uplink phase tracking reference signal (PTRS) and a communication device, which can be applied to mobile communication technology. The method comprises the following steps: in the uplink multi-panel (STxMP) simultaneous transmission configuration, when scheduling PUSCH as non-codebook-based SDM transmission, determining uplink PTRS transmission parameters based on received configuration information, wherein the PTRS transmission parameters comprise the number of actual sending ports of the PTRS and the DMRS ports actually associated with each PTRS port, and different PTRS ports are associated with different DMRS ports; and sending the PTRS to a network device based on the uplink PTRS transmission parameters, so that the reliable transmission of the PTRS is realized.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a method and communication apparatus for transmitting an uplink phase tracking reference signal (PTRS). Background Technology

[0002] In the uplink enhancements of Release 18, simultaneous uplink transmission via multiple panels and / or multiple transmission and receiving points (multi-TRPs) is considered to support higher throughput and more reliable transmission performance. To support simultaneous uplink transmission via multiple panels based on single downlink control information (DCI), reliable transmission of the phase tracking reference signal (PTRS) needs to be considered under different transmission multiplexing schemes, thereby supporting accurate estimation of common phase error (CPE) in multi-panel terminal scenarios. Summary of the Invention

[0003] The first aspect of this disclosure provides a method for transmitting an uplink phase tracking reference signal (PTRS), the method being executed by a terminal device, the method comprising:

[0004] In the configuration of simultaneous transmission of STxMP across multiple uplink panels, when the network device schedules the physical uplink shared channel PUSCH as non-codebook spatial multiplexing (SDM) transmission, the uplink PTRS transmission parameters are determined based on the received configuration information. The PTRS transmission parameters include the actual number of PTRS transmission ports and the DMRS port actually associated with each PTRS port. Different PTRS ports are associated with different DMRS ports.

[0005] Based on the uplink PTRS transmission parameters, PTRS is sent to the network device.

[0006] A second aspect of this disclosure provides a method for transmitting an uplink phase tracking reference signal (PTRS), the method being performed by a network device, the method comprising:

[0007] When the terminal device is configured to transmit STxMP simultaneously via multiple uplink panels, and the scheduled physical uplink shared channel PUSCH is a non-codebook-based spatial multiplexing (SDM) transmission, the uplink PTRS transmission parameters of the terminal device are determined based on the configuration information sent to the terminal device. The PTRS transmission parameters include the actual number of PTRS transmission ports and the DMRS port actually associated with each PTRS port. Different PTRS ports are associated with different DMRS ports.

[0008] Based on the uplink PTRS transmission parameters, the terminal device sends PTRS data.

[0009] A third aspect of this disclosure provides a communication device, including:

[0010] The processing module is used to determine the uplink PTRS transmission parameters based on the received configuration information when the network device schedules the physical uplink shared channel PUSCH as non-codebook space division multiplexing (SDM) transmission under the configuration of simultaneous transmission of STxMP on multiple uplink panels. The PTRS transmission parameters include the number of actual PTRS transmission ports and the DMRS port actually associated with each PTRS port. Different PTRS ports are associated with different DMRS ports.

[0011] The transceiver module is used to send PTRS to the network device based on the uplink PTRS transmission parameters.

[0012] The fourth aspect of this disclosure provides another communication device, including:

[0013] The processing module is used to determine the uplink PTRS transmission parameters of the terminal device based on the configuration information sent to the terminal device when the scheduling physical uplink shared channel PUSCH is non-codebook-based spatial multiplexing SDM transmission, under the configuration of simultaneous uplink multi-panel transmission STxMP of the terminal device. The PTRS transmission parameters include the number of actual PTRS transmission ports and the DMRS port actually associated with each PTRS port, and different PTRS ports are associated with different DMRS ports.

[0014] The transceiver module is used to receive PTRS transmitted by the terminal device based on the uplink PTRS transmission parameters.

[0015] A fifth aspect of this disclosure provides a communication device including a processor that, when the processor invokes a computer program in memory, executes the method described in the first aspect.

[0016] A sixth aspect of this disclosure provides a communication device including a processor that, when the processor invokes a computer program in memory, executes the method described in the second aspect above.

[0017] A seventh aspect of this disclosure provides a communication device including a processor and a memory storing a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method described in the first aspect above.

[0018] An eighth aspect of this disclosure provides a communication device including a processor and a memory storing a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method described in the second aspect above.

[0019] A ninth aspect of this disclosure provides another communication device, the device including a processor and an interface circuit, the interface circuit being configured to receive code instructions and transmit them to the processor, the processor being configured to execute the code instructions to cause the device to perform the method described in the first aspect above.

[0020] The tenth aspect of this disclosure provides another communication device, which includes a processor and an interface circuit. The interface circuit is used to receive code instructions and transmit them to the processor, which is used to execute the code instructions to cause the device to perform the method described in the second aspect above.

[0021] The eleventh aspect of this disclosure provides a communication system including the communication device as described in the third to fourth aspects above; or including the communication device as described in the fifth to sixth aspects above; or including the communication device as described in the seventh to eighth aspects above; or including the communication device as described in the ninth to tenth aspects above.

[0022] The twelfth embodiment of this disclosure provides a computer-readable storage medium for storing instructions for use by the communication device described above, which, when executed, cause the communication device to perform the method described in the first aspect.

[0023] The thirteenth embodiment of this disclosure provides a computer-readable storage medium for storing instructions for use by the communication device described above, which, when executed, cause the communication device to perform the method described in the second aspect above.

[0024] The fourteenth aspect of this disclosure also provides a computer program product including a computer program that, when run on a computer, causes the computer to perform the method described in the first aspect above.

[0025] The fifteenth aspect of this disclosure also provides a computer program product including a computer program, which, when run on a computer, enables the computer to perform the method described in the second aspect above.

[0026] A sixteenth aspect of this disclosure provides a chip system including at least one processor and an interface for supporting a communication device in implementing the functions involved in the first aspect, such as determining or processing at least one of the data and information involved in the above methods. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for the communication device. The chip system may be composed of chips or may include chips and other discrete devices.

[0027] A seventeenth aspect of this disclosure provides a chip system including at least one processor and an interface for supporting a communication device in implementing the functions involved in the second aspect, such as determining or processing at least one of the data and information involved in the above methods. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for the communication device. The chip system may be composed of chips or may include chips and other discrete devices.

[0028] An eighteenth aspect of this disclosure also provides a computer program that, when run on a computer, causes the computer to perform the method described in the first aspect.

[0029] The nineteenth aspect of this disclosure also provides a computer program that, when run on a computer, causes the computer to perform the method described in the second aspect above. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments or background art of this disclosure, the accompanying drawings used in the embodiments or background art of this disclosure will be described below.

[0031] Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of the present disclosure;

[0032] Figure 2 A schematic flowchart of an uplink PTRS transmission method provided in an embodiment of this disclosure;

[0033] Figure 3 This is a schematic flowchart of another uplink PTRS transmission method provided in an embodiment of the present disclosure;

[0034] Figure 4 This is a schematic flowchart of another uplink PTRS transmission method provided in an embodiment of the present disclosure;

[0035] Figure 5 This is a schematic flowchart of another uplink PTRS transmission method provided in an embodiment of the present disclosure;

[0036] Figure 6 This is a schematic flowchart of another uplink PTRS transmission method provided in an embodiment of the present disclosure;

[0037] Figure 7 A schematic flowchart of an uplink PTRS transmission method provided in an embodiment of this disclosure;

[0038] Figure 8 This is a schematic flowchart of another uplink PTRS transmission method provided in an embodiment of the present disclosure;

[0039] Figure 9 This is a schematic flowchart of another uplink PTRS transmission method provided in an embodiment of the present disclosure;

[0040] Figure 10 This is a schematic flowchart of another uplink PTRS transmission method provided in an embodiment of the present disclosure;

[0041] Figure 11 This is a schematic flowchart of another uplink PTRS transmission method provided in an embodiment of the present disclosure;

[0042] Figure 12 This is a schematic diagram of the structure of a communication device provided in an embodiment of this disclosure;

[0043] Figure 13 This is a schematic diagram of another communication device provided in an embodiment of this disclosure;

[0044] Figure 14 This is a schematic diagram of the chip structure provided in an embodiment of this disclosure. Detailed Implementation

[0045] To better understand the transmission method and apparatus for an uplink phase tracking reference signal (PTRS) disclosed in this disclosure, the communication system to which this disclosure is applicable will be described first.

[0046] It should be noted that the term "includes" in this disclosure can mean either direct inclusion or indirect indication. For example, if A includes B, it can mean that A directly includes B, or it can mean that certain information in A can indirectly indicate B. This disclosure does not limit this.

[0047] In addition, the descriptions of "first SRS resource set" and "second SRS resource set" in this disclosure are only for distinguishing different resource sets. The descriptions such as "first" and "second" do not represent the index number or other information corresponding to the SRS resource set.

[0048] In this disclosure, the phase tracking reference signal (PTRS) can also be referred to as "PT-RS".

[0049] Please see Figure 1 , Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of this disclosure. The communication system may include, but is not limited to, a network device and a terminal device. Figure 1 The number and form of devices shown are for illustrative purposes only and do not constitute a limitation on the embodiments of this disclosure. In actual applications, two or more network devices and two or more terminal devices may be included. Figure 1 The communication system shown is an example including a network device 11 and a terminal device 12.

[0050] It should be noted that the technical solutions of this disclosure can be applied to various communication systems. For example, Long Term Evolution (LTE) systems, 5th Generation (5G) mobile communication systems, 5G New Radio (NR) systems, or other future new mobile communication systems.

[0051] The network device 11 in this embodiment is an entity on the access network side used for transmitting or receiving signals. For example, the access network device 11 can be an evolved NodeB (eNB), a transmission reception point (TRP), a next-generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. This disclosure does not limit the specific technology or device form used in the network device. The access network device provided in this disclosure can be composed of a central unit (CU) and a distributed unit (DU). The CU can also be called a control unit. Using a CU-DU structure, the protocol layer of a network device, such as a base station, can be separated. Some protocol layer functions are centrally controlled by the CU, while the remaining part or all protocol layer functions are distributed in the DU, which is centrally controlled by the CU.

[0052] The terminal device 12 in this embodiment is a user-side entity used for receiving or transmitting signals and possessing Internet of Things (IoT) functionality. Examples include mobile phones, wearable devices, smart home devices, smart office equipment, etc. Terminal devices can also be referred to as terminal equipment (UE), user equipment (UE), mobile station (MS), mobile terminal device (MT), etc. Terminal devices can be communication-enabled vehicles, smart cars, mobile phones, wearable devices, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, wireless terminal devices in industrial control, wireless terminal devices in self-driving, wireless terminal devices in remote medical surgery, wireless terminal devices in smart grids, wireless terminal devices in transportation safety, wireless terminal devices in smart cities, wireless terminal devices in smart homes, etc. The embodiments disclosed herein do not limit the specific technology or device form used in the terminal device.

[0053] It is understood that the communication system described in the embodiments of this disclosure is for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and does not constitute a limitation on the technical solutions provided in the embodiments of this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this disclosure are also applicable to similar technical problems.

[0054] In related technologies, in the Multi-TRP scenario, uplink enhancement supports the retransmission of the physical uplink shared channel (PUSCH) by using time division multiplexing (TDM) to transmit the uplink channel to different TRPs in different uplink beam directions.

[0055] Currently, the bottlenecks in communication systems remain in uplink transmission rate and coverage. Therefore, the main focus of system enhancements for the R18 standard is to improve uplink rate and further enhance transmission reliability by utilizing multiple panel terminal devices for simultaneous uplink transmission in Multi-TRP scenarios. Transmission can be scheduled based on a single DCI carried by a physical downlink control channel (PDCCH), or it can be scheduled separately based on different DCIs carried by different PDCCHs. Currently considered synchronous transmission schemes primarily utilize channel transmission without panels based on space division multiplexing (SDM) or frequency division multiplexing (FDM).

[0056] Multi-panel implementations of terminal devices typically involve configuring multiple physical panels. These panels may have varying capabilities, such as a different number of sounding reference signal (SRS) ports. The maximum supported data transmission layers may also differ; for example, one panel might support a maximum of Layer 2 transmission, while another supports a maximum of Layer 4. The network device determines whether the terminal device is suitable for simultaneous uplink transmission across multiple panels. If the terminal is suitable for simultaneous uplink transmission across multiple panels and is scheduled accordingly, the network device will directly or indirectly indicate the relevant transmission parameters, including the terminal's specific beamforming information, the number of data layers used, the DMRS port allocation, and precoding indications.

[0057] In addition, PUSCH's uplink M-TRP related transmission schemes mainly include:

[0058] 1. Standard R18 specifies that simultaneous transmission from multiple panels (STxMP) supports the following transmission schemes for S-DCI-based PUSCHs: Space Division Multiplexing (SDM) scheme and single frequency network (SFN) space division multiplexing scheme.

[0059] 2. Standard R17 enhances the uplink transmission of M-TRP under S-DCI. The uplink PUSCH transmission is transmitted to the TRP direction of multiple base stations. In R17, the cooperative transmission under the TDM transmission mode is mainly standardized. Different repetitions of the same information on the PUSCH are sent to different TRPs on the network side in time-division by different transmission occupancy (TO) in the time domain. This method has relatively low requirements for terminal capabilities. Each TO only needs to send the PUSCH in the direction of one TRP. Therefore, it does not require the ability to send beams simultaneously, and the transmission delay is relatively large.

[0060] 3. In R17, in M-TRP transmission based on non-codebook (NCB) and codebook, the SRS resource indicator (SRI) field in the DCI indicates the SRS resources in the SRS resource set. Since R17 supports two SRS resource sets, in M-TRP PUSCH repetition transmission based on non-codebook, DCI formats 0_1 and 0_2 contain two SRI fields associated with the two SRS resource sets, and each SRI field indicates a TRP SRS resource set.

[0061] Phase noise (PN) is caused by the local oscillator disrupting the orthogonality of subcarriers in an OFDM system, leading to common phase error (CPE). This causes the modulation constellation to rotate at a fixed angle, resulting in inter-carrier interference (ICI), which is more pronounced at high frequencies. In New Radio (NR) systems, a phase tracking reference signal (PTRS) is designed for CPE estimation to enhance signal coverage and improve signal quality. PTRS, a UE-specific reference signal, is configured by the network equipment for the terminal equipment. PTRS is used to track phase noise introduced by the local oscillator in both the network equipment (e.g., gNB) and the terminal equipment. PTRS can be seen as an extension of the demodulation reference signal (DMRS), and they are closely related, such as using the same precoding, port correlation, orthogonal sequence generation, and quasi-co-location (QCL) relationships.

[0062] The number of ports in a PTRS is related to the number of phase noise sources. When there are multiple independent phase noise sources, each phase noise source requires a PTRS port for phase estimation.

[0063] Whether PTRS is transmitted uplink is also controlled by the configuration of higher-layer parameters. If PTRS is not configured for the terminal device in the higher-layer parameter DMRS uplink configuration information (DMRS-UplinkConfig), then PTRS will not be transmitted uplink.

[0064] If the network device configures the terminal device with the parameter "UL-PTRS-present", and the number of PTRS ports is 1 or 2, then the PTRS-DMRS association indication field in the downlink control information (DCI) (e.g., DCI0_1 / 0_2) indicates that one or a group of DM-RS ports are associated with this PTRS port. The specific association relationships are shown in the table below:

[0065] When the network device is configured with a single PTRS port, the association between the uplink PTRS port 0 (UL PTRS port 0) and the DMRS is shown in Table 1:

[0066] Table 1

[0067]

[0068] In other words, when the value of the PTRS-DMRSassociation indicator field is 0, PTRS port 0 uses the same antenna port as the first scheduled DMRS port; when the value of the indicator field is 1, PTRS port 0 uses the same antenna port as the second scheduled DMRS port, and so on.

[0069] When the network device is configured with 2 PTRS ports, the association between uplink PTRS ports 0 and 1 (UL PTRS port 0 and 1) and DMRS is shown in Table 2:

[0070] Table 2

[0071]

[0072] In other words, when the most significant bit (MSB) of the PTRS-DMRS association indicator field is 0, PTRS port 0 and the first DMRS port in a group of DMRS ports sharing PTRS port 0 use the same antenna port.

[0073] When the least significant bit (LSB) of the PTRS-DMRS association indicator field is 0, PTRS port 0 and the second DMRS port in a group of DMRS ports sharing PTRS port 0 use the same antenna port, etc.

[0074] The maximum number of PT-RS ports is determined by configuring the maximum number of ports (maxNrofPorts) in the higher-layer parameter PTRS-UplinkConfig to '2'. If the indicated maximum number of PTRS ports is 2, the network device can divide the DMRS ports corresponding to the sounding reference signal (SRS) resources into two groups and suggest association relationships for each.

[0075] Furthermore, since PUSCH is based on non-codebook transmission, in practical systems it generally requires the measurement of the downlink channel state information-reference signal (CSI-RS). The terminal equipment utilizes uplink-downlink reciprocity to obtain uplink channel information by measuring the downlink signal. The main processes include:

[0076] 1. The network device uses a non-codebook-based transmission configuration associated downlink CSI-RS for downlink channel detection of terminal devices;

[0077] 2. The terminal device selects the precoding matrix through downlink channel calculation, and transmits SRS in each precoded beam direction on the configured SRS resource set;

[0078] 3. The network device performs uplink channel detection on the SRS, and the network simultaneously performs resource scheduling on the terminal device and notifies the terminal device through downlink signaling. At the same time, it selects the beam in the precoding matrix through SRI field configuration or indication.

[0079] Specifically, the terminal device uses the modified precoding matrix to determine the actual precoding and the allowed number of RANKs, and then sends the PUSCH. The terminal device determines the precoding indication limit based on the maximum RANK parameter, and the number of SRS resources configured or indicated in the SRI field does not exceed maxRank. To enable the network device to modify the precoding matrix actually used by the terminal device, for non-codebook-based transmissions, the network needs to configure an SRS resource set for the terminal.

[0080] The SRI domain indication mapping tables based on non-codebooks are shown in the following tables, where Lmax corresponds to the maximum number of RANKs configured at the higher level, and N...SRS The number of SRS resources contained in the SRS resource set configured as "non-codebook" is also configured by the network.

[0081] Table 3 shows the L values ​​under non-codebook-based PUSCH transmission. max When = 1, it indicates the relationship between the value of the bit field mapped to the SRS resource index in the SRI indication and the indicated SRS resource.

[0082] Table 3

[0083]

[0084] Table 4 shows the L values ​​under non-codebook-based PUSCH transmission. max When =2, the relationship between the value of the bit field in the SRI field that maps to the SRS resource index and the indicated SRS resource.

[0085] Table 4

[0086]

[0087] Table 5 shows the L... under non-codebook-based PUSCH transmission. max When = 3, the relationship between the value of the bit field in the SRI field that maps to the SRS resource index and the indicated SRS resource.

[0088] Table 5

[0089]

[0090] Table 6 shows the L values ​​under non-codebook-based PUSCH transmission. max When = 4, the relationship between the value of the bit field in the first SRI field that maps to the SRS resource index and the indicated SRS resource.

[0091] Table 6

[0092]

[0093] Table 7 shows the L... under non-codebook-based PUSCH transmission. max When = 4, the value of the bit field in the second SRI field that maps to the SRS resource index is related to the SRS resource it indicates.

[0094] Table 7

[0095]

[0096] This disclosure primarily addresses how to achieve reliable PTRS transmission when network devices schedule PUSCH as SDM transmission based on non-codebook NCB under STxMP transmission. It proposes an uplink PTRS transmission method. By determining the uplink PTRS transmission parameters based on received configuration information, PTRS transmission is then performed, thus providing conditions for accurate estimation of CPE in STxMP transmission.

[0097] The following is a detailed description of a PTRS transmission method and apparatus provided in this disclosure, with reference to the accompanying drawings.

[0098] It should be noted that the various embodiments and their possible implementations disclosed herein can be arbitrarily combined to achieve uplink PTRS transmission, provided there is no contradiction. Furthermore, when combining the various embodiments, the order of the steps can be changed, provided there is no contradiction.

[0099] Please see Figure 2 , Figure 2 This is a schematic flowchart illustrating an uplink PTRS transmission method provided in an embodiment of this disclosure. The method is executed by a terminal device. Figure 2 As shown, the method may include, but is not limited to, the following steps:

[0100] Step 201: In the uplink multi-panel simultaneous STxMP transmission configuration, when the network device schedules PUSCH as non-codebook-based SDM transmission, the uplink PTRS transmission parameters are determined based on the received configuration information. These PTRS transmission parameters include the actual number of PTRS transmitting ports and the DMRS port actually associated with each PTRS port; different PTRS ports are associated with different DMRS ports. Optionally, the PUSCH transmission can be any of the following types: scheduled PUSCH, unscheduled PUSCH type 1, and unscheduled PUSCH type 2.

[0101] Optionally, the configuration information may include at least the maximum number of PTRS ports, an indication of the association between PTRS and DMRS ports, and DMRS port configuration information.

[0102] In some possible implementations, the maximum number of PTRS ports can be received by the terminal device via Radio Resource Control (RRC) messages, and the association between PTRS and DMRS ports and DMRS port configuration information can be received by the terminal device via DCI signaling. This disclosure does not limit this.

[0103] In some possible implementations, under STxMP configuration, when scheduled as a single TRP (STRP) transmission, the maximum number of PTRS ports can be 2; under SFN transmission scheduled as a multi-TRP transmission, the maximum number of PTRS ports is 1 or 2; and under SDM transmission scheduled as a multi-TRP transmission, the maximum number of PTRS ports is 2.

[0104] In some possible implementations, the maximum number of PTRS ports may be configured to be one, which can be applied to single TRP transmission, SFN transmission, and SDM transmission. In other words, the terminal device will receive a maximum number of PTRS ports configured by the network device.

[0105] In other words, for single TRP transmission, SFN transmission and SDM transmission, the maximum number of PTRS ports that the terminal device can use is the same, and the maximum value of the PTRS maximum port number configuration parameter can be 2.

[0106] In some possible implementations, the maximum number of PTRS ports may also be configured to be two, one of which is used for single TRP transmission, and the other is used for multi-TRP transmission under STxMP, which includes at least SFN transmission and SDM transmission.

[0107] In other words, for single TRP transmission, SFN transmission, and SDM transmission, the terminal device will receive two PTRS maximum port number configuration parameters. The PTRS maximum port number applicable to multi-TRP transmission under STxMP is independent of the PTRS maximum port number applicable to single TRP transmission. These two parameters can be received by the terminal device via a single signaling message, or they can be received separately via two separate signaling messages; this disclosure does not limit this.

[0108] Optionally, the maximum number of PTRS ports corresponding to single TRP transmission can be 2. The maximum number of PTRS ports corresponding to SFN and SDM transmissions can also be 2.

[0109] In some possible implementations, the maximum number of PTRS ports may also be configured to be at least three, wherein one of the at least three PTRS maximum ports is used for single TRP transmission, another for SDM transmission, and another for SFN transmission.

[0110] In other words, for single TRP transmission, SFN transmission and SDM transmission, the terminal device will receive at least three maximum PTRS port numbers. These three parameters can be received by the terminal device through one signaling, or they can be received by the terminal device through three separate signaling. This disclosure does not limit this.

[0111] Optionally, the maximum number of PTRS ports corresponding to a single TRP transmission can be 2. The maximum number of PTRS ports applied to SDM transmission for multiple TRP transmission can also be 2. The maximum number of PTRS ports applied to SFN transmission for multiple TRP transmission can be 1 or 2.

[0112] Optionally, the association between the PTRS and DMRS ports can be indicated as shown in Tables 1 and 2 above. That is, the association between the PTRS and DMRS ports can differ when the PTRS is a single port versus when the PTRS is a dual port.

[0113] In some possible implementations, the DMRS port configuration information may include the type of DMRS port, the number of DMRS ports, the grouping information of the DMRS port, the antenna port corresponding to the DMRS port, etc., which are not limited in this disclosure.

[0114] Optionally, the terminal device may determine the actual number of PTRS transmission ports based on preset rules and received configuration information, which may be 0, 1, or 2.

[0115] In some possible implementations, if the maximum number of PTRS ports is 1, then the actual number of PTRS transmission ports determined by the terminal device may be 0 or 1.

[0116] Optionally, if the terminal device is not configured with PTRS in the higher-layer parameter DMRS-UplinkConfig, the actual number of PTRS transmission ports determined by the terminal device will be 0, meaning no PTRS is transmitted uplink. If the network device configures the terminal device with the parameter "UL-PTRS-present" and the maximum number of PTRS ports is 1, then the actual number of PTRS transmission ports determined by the terminal device may be 0 or 1.

[0117] In some possible implementations, if the maximum number of PTRS ports is 2, then the actual number of PTRS transmission ports determined by the terminal device may be 0, 1, or 2.

[0118] Optionally, if the terminal device is not configured with PTRS in the higher-layer parameter DMRS-UplinkConfig, then the actual number of transmitting ports corresponding to PTRS determined by the terminal device will be 0, meaning that PTRS is not transmitted uplink. If the network device configures the terminal device with the parameter "UL-PTRS-present", and the maximum number of ports corresponding to PTRS is 2, then the actual number of transmitting ports corresponding to PTRS determined by the terminal device may be 0, 1, or 2.

[0119] Optionally, each PTRS port may be associated with one or more DMRS ports, and different PTRS ports may be associated with different DMRS ports. This disclosure does not limit this.

[0120] In some possible implementations, the preset rules are rules used to assist the terminal device in determining the uplink PTRS transmission parameters. These rules can be determined by the terminal device based on the protocol agreement, or they may be configured by the receiving network device, such as rules that the terminal device receives via RRC messages. This disclosure does not limit these rules.

[0121] Step 202: Send PTRS to the network device based on the uplink PTRS transmission parameters.

[0122] Once the terminal device has determined the actual number of uplink PTRS transmission ports and the actual DMRS ports associated with each PTRS port, it can transmit PTRS using the antenna ports corresponding to one or more DMRS ports associated with each PTRS port.

[0123] In this embodiment of the disclosure, under the STxMP transmission configuration, when the network device schedules PUSCH as SDM transmission based on non-codebook NCB, the terminal device determines the PTRS transmission parameters according to preset rules based on the received configuration information, and then transmits PTRS based on the PTRS transmission parameters, thereby realizing reliable PTRS transmission and providing conditions for accurate estimation of CPE under the STxMP transmission configuration.

[0124] Please see Figure 3 , Figure 3 This is a flowchart illustrating another uplink PTRS transmission method provided in this embodiment of the disclosure, which is executed by a terminal device. Figure 3 As shown, the method may include, but is not limited to, the following steps:

[0125] Step 301: Under the uplink STxMP configuration, when the network device schedules PUSCH as SDM multiplexing mode based on NCB single TRP transmission, the actual number of PTRS transmission ports is determined to be 1 or 2. The actual number of PTRS transmission ports is determined by the number of PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the SRI domain, wherein one or more SRS resources are included in the SRS resource set associated with the SRI domain.

[0126] Optionally, for unscheduled PUSCH transmission, the terminal device can determine the actual number of PTRS transmission ports based on the number of PTRS port index values ​​corresponding to one or more SRS resources configured in the SRI field; while for scheduled PUSCH, the terminal device can determine the actual number of PTRS transmission ports based on the number of PTRS port index values ​​corresponding to one or more SRS resources indicated in the SRI field.

[0127] In this embodiment of the disclosure, although the terminal device receives an STxMP configuration, during multi-TRP transmission, it can dynamically switch between single-TRP and MTRP transmissions by dynamically indicating the SRS resource set indicator field, and indicate which SRS resource set a specific PUSCH transmission is associated with. Therefore, when the SRS resource set indicator indicates a single-TRP transmission, the terminal device can determine the actual number of PTRS transmission ports based on the number of PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the SRI field.

[0128] For example, when the dynamic indication of the SRS resource set indicator field is single TRP transmission, the SRI field configures or indicates 3 SRS resources, and the PTRS port index values ​​(ptrs-PortIndex) corresponding to these three SRS resources are index0, index1, and index0, respectively. That is to say, the SRS resources in the SRS resource set associated with the SRI field correspond to two PTRS port index values, index0 and index1. Then the terminal device can determine that the actual number of PTRS transmission ports is 2.

[0129] In other words, when scheduling for single TRP transmission, the actual number of PTRS sending ports can be determined based on the number of PTRS port index values ​​corresponding to the SRS resources in the SRS resource set associated with the SRI domain of the network device configuration.

[0130] Optionally, different sets of SRS resources are associated with the transmission occupancy (TO) of PUSCH on the antenna panel, TRP, or beam information.

[0131] Different SRS resource sets can be associated with PUSCH transmission timings sent on different panels to different TRP directions. Different directions correspond to different beam information corresponding to different transmission configuration indication (TCI) states. For example, the first SRS resource set is associated with the first TCI state / first TRP, that is, it is sent to TRP1 through the corresponding PUSCH transmission timing. The second SRS resource set is associated with the second TCI state / second TRP, that is, it is sent to TRP2 through the corresponding PUSCH TO. The association between the SRS resource set and the TCI state / TRP can be determined by the different code points in the SRS resource set indication field of the DCI.

[0132] Step 302: Determine the DMRS ports corresponding to one or more SRS resources with the same PTRS port index value in the associated SRS resource set, and ensure that they share the same PTRS port.

[0133] Taking the above example, for the case where the maximum layer RANK number Lmax = 3, if the SRS resource set associated with the SRI domain configured in the network device contains three SRS resources: SRS route#0, SRS route#1, and SRS route#2, and the PTRS port index values ​​corresponding to these three SRS resources are index0, index1, and index0 respectively, and the DMRS ports corresponding to these three SRS resources are DMRS port#0, DMRS port#1, and DMRS port#2 respectively, when the value of the bit field mapped to the SRS resource index in the SRI indication is equal to (hereinafter referred to as SRI indication equal to) 6, refer to N in Table 5 above. SRSAs indicated by the SRI in column 3, the SRI specifically indicates SRS resource #0, SRS resource #1, and SRS resource #2. Therefore, the DMRS ports corresponding to the SRS resources indicated by the SRI are DMRS port #0, DMRS port #1, and DMRS port #2, respectively. The terminal device can then determine that the two DMRS ports (DMRS port #0 and DMRS port #2) corresponding to SRS resource #0 and SRS resource #2 share the PTRS port index value index0, while the one DMRS port (DMRS port #1) corresponding to SRS resource #1 shares the antenna port with the PTRS port with the port index value index1.

[0134] Alternatively, for the case where the maximum tier RANK number Lmax = 3, if the SRS resource set associated with the SRI domain configured in the network device contains four SRS resources: SRS route#0, SRS route#1, SRS route#2, and SRS route#3, and the PTRS port index values ​​corresponding to these four SRS resources are index0, index1, index1, and index0 respectively, and the DMRS ports corresponding to these four SRS resources are DMRS port#0, DMRS port#1, DMRS port#2, and DMRS port#3 respectively. When the SRI indication equals 11, refer to N in Table 5 above. SRS As indicated by the SRI in column 4, the SRI specifically indicates SRS resource#0, SRS resource#1, and SRS resource#3. Therefore, the DMRS ports corresponding to the SRS resources indicated by the SRI are DMRS port#0, DMRS port#1, and DMRS port#3, respectively. The terminal device can then determine that the DMRS port#0 and DMRS port#3 corresponding to SRS resource#0 and SRS resource#3 share the PTRS port index value index0, while the DMRS port#1 corresponding to SRS resource#1 shares the antenna port with the PTRS port with the port index value index1.

[0135] Step 303: Based on the association relationship indication between PTRS and DMRS ports, determine the actual DMRS port associated with each PTRS.

[0136] In this embodiment of the disclosure, after the terminal device determines the DMRS port that can share each PTRS port, it can determine the DMRS port actually associated with the PTRS based on the received association relationship indication between the PTRS and DMRS ports (such as Table 1 above).

[0137] Taking the example of the SRS resource set associated with the SRI domain of the network device configured above, which contains 3 SRS resources, the terminal device knows that there are 2 DMRS ports (DMRS port#0 and DMRS port#2) sharing PTRS port 0. If the value of the PTRS-DMRS joint indication field is "1", as shown in Table 1 above, then it can be determined that DMRS port#2 is the DMRS port actually associated with PTRS port 0.

[0138] Alternatively, taking the example that the SRS resource set associated with the SRI domain of the network device configured above contains 4 SRS resources, the terminal device knows that there are 2 DMRS ports (DMRS port#0 and DMRS port#3) sharing PTRS port 0. If the value of the PTRS-DMRS joint indication field is "1", as shown in Table 1 above, then it can be determined that DMRS port#3 is the DMRS port actually associated with PTRS port 0.

[0139] In other words, the terminal device can determine the actual DMRS port used when sending PTRS in PUSCHTO transmission based on the association between PTRS and DMRS ports. It should be noted that in the above examples, the one or more SRS resource index numbers configured or indicated in the SRI resource field, the correspondence between SRS resources and PTRS port index numbers, and the correspondence between SRS resources and DMRS ports are all illustrative and should not be taken as a limitation on the scheme for determining the number of actual PTRS sending ports in this disclosure.

[0140] Step 304: Based on the actual number of PTRS sending ports and the DMRS port actually associated with the PTRS sending port, send PTRS to the network device.

[0141] The specific implementation of step 304 above can be found in the detailed description of other embodiments of this disclosure, and will not be repeated here.

[0142] In this embodiment of the disclosure, under the STxMP transmission configuration, when the network device schedules PUSCH for NCB-based SDM transmission, and under single TRP transmission, the terminal device determines the actual number of PTRS sending ports by the number of PRTS port index values ​​corresponding to one or more SRS resources configured or indicated by the SRI field. After determining one or more DMRS ports sharing the same PTRS port, it determines the actual DMRS port associated with each PTRS based on the association relationship indication between PTRS and DMRS ports. Therefore, based on the actual number of PTRS sending ports and the actual DMRS ports associated with each PTRS port, the terminal device sends PTRS to the network device. This achieves reliable PTRS transmission under the STxMP transmission configuration and SDM transmission with PUSCH scheduled for single TRP transmission, providing conditions for accurate CPE estimation under the STxMP transmission configuration.

[0143] Please see Figure 4 , Figure 4 This is a flowchart illustrating another uplink PTRS transmission method provided in this embodiment of the disclosure, which is executed by a terminal device. Figure 4 As shown, the method may include, but is not limited to, the following steps:

[0144] Step 401: Under the uplink STxMP configuration, when the network device schedules PUSCH as SDM transmission using NCB-based multi-TRP transmission with SDM multiplexing mode, the actual number of PTRS sending ports is determined to be 2. The PTRS port index values ​​corresponding to one or more first SRS resources configured or indicated by the first SRI field are all defaulted to predefined first index values. The PTRS port index values ​​corresponding to one or more second SRS resources configured or indicated by the second SRI field are all defaulted to predefined second index values. The one or more first SRS resources are included in the first SRS resource set associated with the first SRI field, and the one or more second SRS resources are included in the second SRS resource set associated with the second SRI field.

[0145] It should be noted that in the embodiments of this disclosure, "first SRS resource" and "second SRS resource" are used only to distinguish them as different SRS resources, and are not a limitation on the SRS resource index. In addition, "first SRS resource set" and "second SRS resource set" are also used only to distinguish them as different SRS resource sets, and are not a limitation on the SRS resource set index.

[0146] Optionally, the first index value can be index0, and the corresponding second index value can be index1; or, the first index value can be index1, and the second index value can be index0.

[0147] Optionally, different sets of SRS resources are associated with the timing of PUSCH transmission on the antenna panel, TRP, or beam information.

[0148] In this embodiment of the disclosure, although the terminal device receives an STxMP configuration, during multi-TRP transmission, it can dynamically switch between single-TRP and MTRP transmissions through the dynamic indication of the SRS resource set indicator field, and indicate which SRS resource set a specific PUSCH transmission is associated with. Therefore, when the SRS resource set indicator indicates multi-TRP transmission, the terminal device can determine that the PTRS port index values ​​corresponding to one or more first SRS resources configured or indicated by the first SRI field are all defaulted to predefined first index values, and the PTRS port index values ​​corresponding to one or more second SRS resources configured or indicated by the second SRI field are all defaulted to predefined second index values.

[0149] In other words, when the dynamic indication of the SRS resource set indicator field is multi-TRP transmission, the terminal device can ignore the ptrs-PortIndex parameter corresponding to all SRS resources configured by the network device, and redetermine the PTRS port index value corresponding to one or more SRS resources configured or indicated in each SRI field.

[0150] For example, when Lmax = 2 on each panel, during multi-TRP transmission, the terminal device can determine the SRS resource set associated with each SRI through the code point in the SRS resource set indictor field configured in the network. For instance, if the code point in the SRS resource set indictor field is "10", then the first SRI and the second SRI can be determined to be associated with the first SRS resource set and the second SRS resource set, respectively. The network device's first SRI domain is associated with four SRS resources in its first SRS resource set: SRS route#0, SRS route#1, SRS route#2, and SRS route#3. The corresponding PTRS-PortIndex values ​​for these four SRS resources are index0, index1, index1, and index1, respectively. Similarly, the second SRI domain is associated with four SRS resources in its second SRS resource set: SRS route#4, SRS route#5, SRS route#6, and SRS route#7. The corresponding PTRS port indices are index0, index1, index1, and index0, respectively. In this case, the PTRS port indices for the SRS resources in different SRS resource sets all contain both index0 and index1. This would cause DMRS ports sharing the same PTRS port to correspond to the same panel. Since different panels typically correspond to different CPE estimates, using independent PTRS ports for estimation is generally unreasonable. Furthermore, even according to the network configuration, the actual number of PTRS on each panel corresponding to SRI1 and SRI2 may not be consistent. For example, if the first SRI is indicated to be 5, see N in Table 4 above. SRSAs can be seen from the meaning of the SRI indication in column 4, the first SRI specifically indicates SRS route #0 and SRS route #2, meaning that the actual number of PTRS ports corresponding to SRI1 is 2 (index0 and index1). The second SRI equals 7. Referring to Table 4 above, the second SRI specifically indicates SRS route #5 and SRS route #6, meaning that the actual number of PTRS ports corresponding to SRI2 is 1 (index1). At this time, the terminal device can directly ignore the above PTRS port index configuration and directly determine that the PTRS port index value corresponding to all SRS resources in the first SRS resource set, or only for the two SRS resources indicated by the first SRI (SRS route #0 and SRS route #2), is index0 (or index1). The PTRS port index value corresponding to all SRS resources in the second SRS resource set, or only for the two SRS resources indicated by the second SRI (SRS route #5 and SRS route #6), is index1 (or index0).

[0151] Since the terminal device determines that the PTRS port index values ​​corresponding to all SRS resources in different SRS resource sets are different, that is, the terminal device determines that the actual number of PTRS transmission ports corresponding to each of the two SRS resource sets is 1, that is, the actual number of PTRS transmission ports is 2.

[0152] It should be noted that the first index value predefined in this disclosure may be associated with the first SRI field by default, and the second index value may be associated with the second SRI field by default; or, the first index value predefined may be associated with the first SRS resource by default, and the second index value may be associated with the second SRS resource by default. This disclosure does not limit this.

[0153] Step 402: Determine the DMRS port corresponding to one or more SRS resources with the first index value in the first SRS resource set, and share the PTRS port corresponding to the first index value. Also, determine the DMRS port corresponding to one or more SRS resources with the second index value in the second SRS resource set, and share the PTRS port corresponding to the second index value.

[0154] Taking the above example, it can be seen that the PTRS port index value corresponding to all SRS resources in the first SRS resource set, or only the two SRS resources (SRS route#0 and SRS route#2) indicated by the first SRI, is the first index value (index0). Similarly, the PTRS port index value corresponding to all SRS resources in the second SRS resource set, or only the two SRS resources (SRS route#5 and SRS route#6) indicated by the second SRI, is the first index value (index1). In this case, if the DMRS configuration type (dmrs-Type) is 1 and the maximum allowed number of time domain symbols (maxLength) is 2, then Table 8 below can be used to determine the DMRS port configured by the network for the terminal device.

[0155] For example, if the DMRS port indication value is 1, then based on Table 8, the terminal device can obtain the DMRS ports configured for it by the network as {0, 1, 4, 5}. Subsequently, the terminal device can determine the DMRS port corresponding to one or more SRS resources indicated by each SRI based on certain rules.

[0156] For example, determine that the DMRS ports of different CDM groups correspond to one or more SRS resources indicated by different SRIs.

[0157] Alternatively, determine that the first two DMRS ports correspond to one or more SRS resources indicated by the first SRI, and the latter two DMRS ports correspond to one or more SRS resources indicated by the second SRI. That is, the two SRS resources indicated by the first SRI correspond to DMRS prot#0 and DMRS prot#1, and it is known that the PTRS port index values ​​corresponding to SRS resource#0 and SRS route#2 are both index0, thus it can be determined that DMRS prot#0 and DMRS prot#1 share the PTRS port corresponding to the first index value. The two SRS resources indicated by the second SRI correspond to DMRS prot#4 and DMRS prot#5, and it is known that the PTRS port index values ​​corresponding to SRS resource#5 and SRS route#6 are both index1, thus it can be determined that DMRS prot#4 and DMRS prot#5 share the PTRS port corresponding to the second index value.

[0158] Alternatively, the latter two DMRS ports can be determined to correspond to one or more SRS resources indicated by the first SRI, and the former two DMRS ports can correspond to one or more SRS resources indicated by the second SRI. That is, the two SRS resources indicated by the first SRI correspond to DMRS prot#4 and DMRS prot#5, meaning that DMRS prot#4 and DMRS prot#5 share the PTRS port corresponding to the first index value. The two SRS resources indicated by the second SRI correspond to DMRS prot#0 and DMRS prot#1, meaning that DMRS prot#0 and DMRS prot#1 share the PTRS port corresponding to the second index value.

[0159] Table 8

[0160]

[0161] Step 403: Based on the association relationship indication between PTRS and DMRS ports, determine the actual DMRS port associated with each PTRS.

[0162] In this embodiment of the disclosure, after the terminal device determines the DMRS port that can share each PTRS port, it can determine the DMRS port actually associated with the PTRS based on the received association relationship indication between the PTRS and DMRS ports (such as Table 2 above).

[0163] Taking the above example, if the first index value is index0 and the second index value is index2, then the terminal device shares two DMRS ports with PTRS index0 in the known first SRS resource set, namely DMRS prot#0 and DMRS prot#1, and two DMRS ports with PTRS index1, namely DMRS prot#4 and DMRS prot#5. If the value of the PTRS-DMRS joint indicator field is "01", that is, the high-order bit value is 0, then it can be determined that the DMRS port actually associated with PTRS port 0 is the first DMRS port between DMRS prot#0 and DMRS prot#1, which is DMRS prot#0. Correspondingly, if the low-order bit value is 1, it means that the DMRS port actually associated with PTRS port 1 is the second DMRS port between DMRS prot#4 and DMRS prot#5, which is DMRS prot#5.

[0164] In other words, the terminal device can determine the actual DMRS port used when sending each PTRS in the PUSCHTO transmission based on the association between the PTRS and DMRS ports.

[0165] Step 404: Based on the actual number of PTRS sending ports and the DMRS port actually associated with the PTRS sending port, send PTRS to the network device.

[0166] The specific implementation of step 404 above can be found in the detailed description of other embodiments of this disclosure, and will not be repeated here.

[0167] In this embodiment of the disclosure, under the STxMP transmission configuration, when the network device schedules the PUSCH as an SDM multiplexing mode based on NCB multi-TRP transmission, the terminal device first determines that the actual number of PTRS sending ports is 2. The PTRS port index value corresponding to one or more first SRS resources configured or indicated by the first SRI field is the first index value, and the PTRS port index value corresponding to one or more second SRS resources configured or indicated by the second SRI field is the second index value. After determining one or more DMRS ports that share the PTRS ports corresponding to the first and second index values ​​respectively, the terminal device determines the actual DMRS port associated with each PTRS based on the association relationship indication between PTRS and DMRS ports. Then, based on the actual number of PTRS sending ports and the DMRS port associated with the port sending the PTRS, the terminal device sends the PTRS to the network device. This achieves reliable PTRS transmission under the SDM multiplexing mode of multi-TRP transmission, providing conditions for accurate CPE estimation under the STxMP transmission configuration.

[0168] Please see Figure 5 , Figure 5 This is a flowchart illustrating another uplink PTRS transmission method provided in this embodiment of the disclosure, which is executed by a terminal device. Figure 5 As shown, the method may include, but is not limited to, the following steps:

[0169] Step 501: Under the uplink STxMP configuration, when the network device schedules PUSCH as SDM multiplexing mode based on NCB multi-TRP transmission, the actual number of PTRS transmission ports is determined to be 2. According to the network device configuration, one or more SRS resources corresponding to the same PTRS port index are determined in the same SRI domain configuration or indication. The PTRS port index values ​​corresponding to one or more SRS resources in different SRS resource sets associated with different SRI domain configurations or indications are different.

[0170] Different SRS resource sets are associated with the transmission timing (TO) of PUSCH on the antenna panel, TRP, or beam information.

[0171] In other words, different SRS resource sets can be associated with PUSCH transmission timings sent on different panels to different TRP directions. Different directions correspond to different TCI states and their corresponding beam information. For example, the first SRS resource set is associated with the first TCI state / first TRP, that is, it is sent to TRP1 through the corresponding PUSCH transmission timing. The second SRS resource set is associated with the second TCI state / second TRP, that is, it is sent to TRP2 through the corresponding PUSCH TO. The association between the SRS resource set and the TCI state / TRP can be determined by the different code points in the SRS resource set indication field of the DCI.

[0172] In this embodiment of the disclosure, during multi-TRP transmission, the terminal device can dynamically switch between STRP and MTRP transmissions based on the dynamic indication of the SRS resource set indicator field. Therefore, when determining the actual number of PTRS transmission ports, the terminal device can first determine whether it is currently performing STRP or MTRP transmission. If the SRS resource set indicator indicates multi-TRP transmission, the PTRS port index values ​​corresponding to one or more SRS resources in each SRS resource set configured by the network device can be filtered first to determine the actual number of PTRS transmission ports based on the filtered PTRS port index values.

[0173] For example, when Lmax = 2 on each panel, during multi-TRP transmission, the terminal device can determine the SRS resource set associated with each SRI through the code point in the SRS resource set indictor field configured in the network. For instance, if the code point in the SRS resource set indictor field is "10", then the first SRI and the second SRI can be determined to be associated with the first SRS resource set and the second SRS resource set, respectively. The network device's first SRI domain is associated with four SRS resources in its first SRS resource set: SRS route#0, SRS route#1, SRS route#2, and SRS route#3. The corresponding PTRS-PortIndex values ​​for these four SRS resources are index0, index1, index1, and index1, respectively. Similarly, the second SRI domain is associated with four SRS resources in its second SRS resource set: SRS route#4, SRS route#5, SRS route#6, and SRS route#7. The corresponding PTRS port indices are index0, index1, index1, and index0, respectively. In this case, the PTRS port indices for the SRS resources in different SRS resource sets all contain both index0 and index1. This would cause DMRS ports sharing the same PTRS port to correspond to the same panel. Since different panels typically correspond to different CPE estimates, using independent PTRS ports for estimation is generally unreasonable. At the same time, even according to the network configuration, the number of PTRS on each panel corresponding to SRI1 and SRI2 may be inconsistent. Therefore, when the SDM multiplexing mode is scheduled for multi-TRP transmission, the terminal device can determine that the first SRI field can only configure or indicate one or more SRS resources corresponding to index0 (or index1), and the second SRI field can only configure or indicate one or more SRS resources corresponding to index1 (or index0).

[0174] If the first SRI is indicated to be 5, see N in Table 4 above. SRSFrom the meaning of the SRI indications in column 4, we can see that the first SRI specifically indicates SRS route #0 and SRS route #2, meaning that the actual number of PTRS ports corresponding to SRI1 is 2 (index0 and index1). The second SRI equals 7, as shown in Table 4 above, indicating that the second SRI specifically indicates SRS route #5 and SRS route #6, meaning that the actual number of PTRS ports corresponding to SRI2 is 1 (index1). If the first SRI field only configures or indicates the SRS resource corresponding to index0, and the second SRI field only configures or indicates the SRS resource corresponding to index1, then when the first SRI equals 5, the terminal device can determine that SRS resource #0 and SRS route #2 indicated by the first SRI both correspond to PTRS index0, and when the second SRI equals 7, resource #5 and SRS resource #6 indicated by the second SRI both correspond to PTRS index1.

[0175] In other words, the terminal device determines that the actual number of PTRS transmission ports is 2 under the SDM multiplexing mode scheduled for multiple TRP transmission.

[0176] In some possible implementations, if one or more SRS resources configured or indicated in one SRI domain correspond to only one PTRS port index value, then another SRI domain is configured or indicated to correspond to one or more SRS resources corresponding to another PTRS port index value.

[0177] For example, if the first SRI equals 7, as shown in Table 4 above, the first SRI indicates SRS resource #1 and SRS resource #2, both of which correspond to PTRS index 1. If the second SRI equals 8, as shown in Table 4 above, the second SRI indicates SRS resource #5 and SRS resource #7, both of which correspond to PTRS index 1 and index 0 respectively. Therefore, it can be determined that all SRS resources in the first SRS resource set, or one or more SRS resources configured or indicated by the first SRI domain, correspond to PTRS index 1, and all SRS resources in the second SRS resource set, or one or more SRS resources configured or indicated by the second SRI domain, correspond to PTRS index 0.

[0178] In some possible implementations, when the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the two SRI domains are not unique, the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each SRI domain are determined by a predefined method.

[0179] For example, a predefined configuration might show one or more SRS resources configured or indicated by a first SRI field corresponding to a PTRS port index value of index0, and one or more SRS resources configured or indicated by a second SRI field corresponding to a PTRS port index value of index1. Then, when the first SRI equals 5 and the second SRI equals 8, meaning the first SRI indicates SRS resource#0 (corresponding to PTRSindex0) and SRS resource#2 (corresponding to PTRSindex1), and the second SRI indicates SRS resource#5 (corresponding to PTRSindex1) and SRS resource#7 (corresponding to PTRSindex0), it can be determined that all SRS resources in the first SRS resource set, or one or more SRS resources configured or indicated by the first SRI field, correspond to PTRSindex0 (e.g., SRS resource#0 and SRS resource#2), and all SRS resources in the second SRS resource set, or one or more SRS resources configured or indicated by the second SRI field, correspond to PTRSindex1.

[0180] Alternatively, it can be determined that the SRS resource #0 and SRS resource #2 configured or indicated in the first SRI field correspond to PTRSindex1, and the SRS resource #5 and SRS resource #7 configured or indicated in the second SRI field correspond to PTRSindex0.

[0181] In some possible implementations, if the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the two SRI domains are all unique, the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each SRI domain shall be applied respectively.

[0182] For example, taking the configuration of the above SRS resource sets as an example, if the first SRI equals 7 and the second SRI equals 6, that is, the first SRI configures or indicates SRS resource #1 and SRS resource #2, and both of these SRS resources correspond to PTRSindex1. The second SRI field configures or indicates SRS resource #4 and SRS resource #7, and both correspond to PTRSindex0. Then the terminal device can determine that the PTRS port index value corresponding to all SRS resources in the first SRS resource set or one or more SRS resources configured or indicated by the first SRI field is index1, and the PTRS port index value corresponding to all SRS resources in the second SRS resource set or one or more SRS resources configured or indicated by the second SRI field is index0.

[0183] Step 502: Determine the DMRS ports corresponding to one or more SRS resources with the same PTRS port index value in each SRS resource set, and make them share the same PTRS port. In different SRS resource sets, the DMRS ports corresponding to SRS resources with different PTRS port index values ​​shall share different PTRS ports respectively.

[0184] Taking the above example, it can be seen that if the first SRI field is configured or indicates SRSresource#0 corresponding to PTRSindex0, and the second SRI field is configured or indicates resource#5 and SRS resource#6 corresponding to PTRSindex1. Additionally, if the DMRS configuration type (dmrs-Type) is 1 and the maximum allowed number of time domain symbols (maxLength) is 2, then Table 8 above can be used to determine the DMRS port configured for the terminal device by the network.

[0185] For example, if the DMRS port indication value is 1, then based on Table 8, the terminal device can obtain the DMRS ports configured for it by the network as {0, 1, 4, 5}. Subsequently, the terminal device can determine the DMRS port corresponding to one or more SRS resources indicated by each SRI based on certain rules.

[0186] For example, determine that the DMRS ports of different CDM groups correspond to one or more SRS resources indicated by different SRIs.

[0187] Alternatively, determine that the first two DMRS ports correspond to one or more SRS resources indicated by the first SRI, and the latter two DMRS ports correspond to one or more SRS resources indicated by the second SRI. That is, the two SRS resources indicated by the first SRI (SRS resource#0 and SRS route#2) correspond to DMRS prot#0 and DMRS prot#1, and it is known that the PTRS port index values ​​corresponding to SRS resource#0 and SRS route#2 are both index0, thus it can be determined that DMRS prot#0 and DMRS prot#1 share PTRS index0. The two SRS resources indicated by the second SRI (SRS resource#5 and SRS route#6) correspond to DMRS prot#4 and DMRS prot#5, and it is known that the PTRS port index values ​​corresponding to SRS resource#5 and SRS route#6 are both index1, thus it can be determined that DMRS prot#4 and DMRS prot#5 share PTRS index1.

[0188] Alternatively, the latter two DMRS ports can be determined to correspond to one or more SRS resources indicated by the first SRI, and the former two DMRS ports can correspond to one or more SRS resources indicated by the second SRI. That is, the two SRS resources indicated by the first SRI (SRS resource#0 and SRS route#2) correspond to DMRS prot#4 and DMRS prot#5, meaning that DMRS prot#4 and DMRS prot#5 share PTRS index 0. The two SRS resources indicated by the second SRI (SRS resource#5 and SRS route#6) correspond to DMRS prot#0 and DMRS prot#1, meaning that DMRS prot#0 and DMRS prot#1 share PTRS index 1.

[0189] Step 503: Based on the association relationship indication between PTRS and DMRS ports, determine the actual DMRS port associated with each PTRS.

[0190] In this embodiment of the disclosure, after the terminal device determines the DMRS port that can share each PTRS port, it can determine the DMRS port actually associated with the PTRS based on the received association relationship indication between the PTRS and DMRS ports (such as Table 2 above).

[0191] Taking the above example, the terminal device knows that the DMRS ports sharing PTRS index 0 are DMRS prot#0 and DMRS prot#1, and the DMRS ports sharing PTRS index 1 are DMRS prot#4 and DMRS prot#5. If the value of the PTRS-DMRS joint indicator field is "01", that is, the high-order bit is 0, then it can be determined that the DMRS port actually associated with PTRS index 0 is the first DMRS port among DMRS prot#0 and DMRS prot#1, that is, the DMRS port actually associated with PTRS index 0 is DMRS prot#0. Correspondingly, if the low-order bit is 1, it means that the DMRS port actually associated with PTRS port 1 is the second DMRS port among DMRS prot#4 and DMRS prot#5, that is, DMRS prot#5.

[0192] In other words, the terminal device can determine the actual DMRS port used when sending each PTRS in the PUSCHTO transmission based on the association between the PTRS and DMRS ports.

[0193] It should be noted that in the above examples, the one or more SRS resource index numbers configured or indicated in the SRI resource domain, the correspondence between SRS resources and PTRS port index numbers, and the correspondence between SRS resources and DMRS ports are all illustrative and should not be taken as a limitation on the scheme for determining the actual number of PTRS transmission ports in this disclosure.

[0194] Step 504: Based on the actual number of PTRS sending ports and the DMRS port actually associated with the PTRS sending port, send PTRS to the network device.

[0195] The specific implementation of step 504 above can be found in the detailed description of other embodiments of this disclosure, and will not be repeated here.

[0196] In this embodiment of the disclosure, under the STxMP transmission configuration, when the network device schedules PUSCH for SDM multiplexing mode based on NCB multi-TRP transmission, the terminal device can determine one or more SRS resources corresponding to the same SRI domain configuration or indication and the same PTRS port index according to the network device configuration. The PTRS port index values ​​corresponding to one or more SRS resources in different SRS resource sets associated with different SRI domain configurations or indications are different. Then, based on the DMRS ports included in the DMRS port group sharing the same PTRS port and the association relationship indication between PTRS and DMRS, the actual DMRS port associated with each PTRS port is determined. Therefore, based on the actual number of PTRS sending ports and the actual DMRS port associated with each PTRS port, the PTRS is sent to the network device. This achieves reliable PTRS transmission under multi-TRP transmission scheduling, providing conditions for accurate CPE estimation under the STxMP transmission configuration.

[0197] Please see Figure 6 , Figure 6 This is a flowchart illustrating another uplink PTRS transmission method provided in this embodiment of the disclosure, which is executed by a terminal device. Figure 6 As shown, the method may include, but is not limited to, the following steps:

[0198] Step 602: Under the uplink STxMP configuration, when the network device schedules PUSCH as an SDM multiplexing mode based on NCB multi-TRP transmission, the actual number of PTRS transmission ports is determined to be 2. According to the network device configuration, one or more SRS resources corresponding to the same PTRS port index value are determined to be configured or indicated in the same SRI domain. One or more SRS resources in different SRS resource sets associated with different SRI domain configurations or indications have different or the same PTRS port index values.

[0199] Optionally, different sets of SRS resources are associated with the transmission occupancy (TO) of PUSCH on the antenna panel, TRP, or beam information.

[0200] In other words, different SRS resource sets can be associated with PUSCH transmission timings sent on different panels to different TRP directions. Different directions correspond to different TCI states and their corresponding beam information. For example, the first SRS resource set is associated with the first TCI state / first TRP, that is, it is sent to TRP1 through the corresponding PUSCH transmission timing. The second SRS resource set is associated with the second TCI state / second TRP, that is, it is sent to TRP2 through the corresponding PUSCH TO. The association between the SRS resource set and the TCI state / TRP can be determined by the different code points in the SRS resource set indication field of the DCI.

[0201] In this embodiment of the disclosure, during multi-TRP transmission, the terminal device can dynamically switch between STRP and MTRP transmissions based on the dynamic indication of the SRS resource set indicator field. Therefore, when determining the actual number of uplink PTRS transmission ports, the terminal device can first determine whether it is currently performing STRP or MTRP transmission. If the dynamic indication of the SRS resource set indicator field is multi-TRP transmission, the terminal device can filter the PTRS port index values ​​corresponding to the SRS resources included in the SRS resource set configured by the network device, and determine the actual number of PTRS transmission ports based on the filtered PTRS port index values.

[0202] For example, when Lmax = 2 on each panel, during multi-TRP transmission, the terminal device can determine the SRS resource set associated with each SRI through the code point in the SRS resource set indictor field configured in the network. For instance, if the code point in the SRS resource set indictor field is "10", then the first SRI and the second SRI can be determined to be associated with the first SRS resource set and the second SRS resource set, respectively. The network device's first SRI domain is associated with four SRS resources in its first SRS resource set: SRS route#0, SRS route#1, SRS route#2, and SRS route#3. The corresponding PTRS-PortIndex values ​​for these four SRS resources are index0, index1, index1, and index1, respectively. Similarly, the second SRI domain is associated with four SRS resources in its second SRS resource set: SRS route#4, SRS route#5, SRS route#6, and SRS route#7. The corresponding PTRS port indices are index0, index1, index1, and index0, respectively. In this case, the PTRS port indices for the SRS resources in different SRS resource sets all contain both index0 and index1. This would cause DMRS ports sharing the same PTRS port to correspond to the same panel. Since different panels typically correspond to different CPE estimates, using independent PTRS ports for estimation is generally unreasonable. At the same time, even according to the network configuration, the number of PTRS on each panel corresponding to SRI1 and SRI2 may not be consistent. Therefore, when the SDM multiplexing mode is scheduled for multi-TRP transmission, the terminal device can determine that the first SRI field can only configure or indicate one or more SRS resources corresponding to index0 (or index1), and the second SRI field can only configure or indicate one or more SRS resources whose PTRS port index values ​​are the same as or different from the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the first SRI field.

[0203] If the first SRI is specified as 5, see N in Table 4 above. SRSFrom the meaning of the SRI indications in column 4, we can see that the first SRI specifically indicates SRS route #0 and SRS route #2, meaning that the actual number of PTRS ports corresponding to SRI1 is 2 (index0 and index1). The second SRI equals 7, as shown in Table 4 above, indicating that the second SRI specifically indicates SRS route #5 and SRS route #6, meaning that the actual number of PTRS ports corresponding to SRI2 is 1 (index1). If the first SRI field configures or indicates the SRS resource corresponding to index0, the second SRI field can configure or indicate the SRS resource corresponding to index1. Therefore, when the first SRI equals 5, the terminal device can determine that SRS resource #0 and SRS route #2 indicated by the first SRI both correspond to PTRS index0, and when the second SRI equals 7, resource #5 and SRS resource #6 configured or indicated by the second SRI field both correspond to PTRS index1.

[0204] Alternatively, if the first SRI field configures or indicates the SRS resource corresponding to index0, and the second SRI field configures or indicates the SRS resource corresponding to index0, then when the first SRI equals 5 and the second SRI equals 7, the terminal device can determine that SRS resource#0 and SRS resource#2 configured or indicated by the first SRI field both correspond to PTRS index0, and resource#5 and SRS resource#6 configured or indicated by the second SRI field also correspond to PTRS index0, and so on.

[0205] In other words, the terminal device determines that the actual number of PTRS transmission ports is 2 under the SDM multiplexing mode scheduled for multiple TRP transmission.

[0206] In some possible implementations, where one or more SRS resources configured or indicated in one SRI domain correspond to only one PTRS port index value, another SRI domain is configured or indicated to correspond to one or more SRS resources corresponding to the same or different PTRS port index values.

[0207] For example, if the first SRI equals 7, as shown in Table 4 above, the first SRI indicates SRS resource #1 and SRS resource #2, both of which correspond to PTRSindex1. If the second SRI equals 8, as shown in Table 4 above, the second SRI indicates SRS resource #5 and SRS resource #7, both of which correspond to PTRSindex1 and index0 respectively. Therefore, it can be determined that all SRS resources in the first SRS resource set, or one or more SRS resources configured or indicated by the first SRI field (e.g., SRS resource #1 and SRS resource #2), correspond to PTRSindex1. All SRS resources in the second SRS resource set, or SRS resources configured or indicated by the second SRI field (e.g., SRSresource #5 and SRS resource #7), correspond to PTRSindex1 or PTRSindex0.

[0208] In some possible implementations, when the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each of the two SRI domains are not unique, the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each SRI domain are determined by a predefined method.

[0209] For example, a predefined configuration might be that one or more SRS resources configured or indicated by the first SRI domain correspond to PTRS port index 0, and one or more SRS resources configured or indicated by the second SRI domain correspond to PTRS port index 0. Then, when the first SRI equals 5 and the second SRI equals 8, meaning the first SRI indicates SRSresource#0 (corresponding to PTRS index 0) and SRS resource#2 (corresponding to PTRS index 1), and the second SRI indicates SRS resource#5 (corresponding to PTRS index 1) and SRS resource#7 (corresponding to PTRS index 0), it can be determined that all SRS resources in the first SRS resource set, or the SRS resources configured or indicated by the first SRI domain (SRSresource#0 and SRS resource#2), correspond to PTRS index 0, and all SRS resources in the second SRS resource set, or the SRS resources configured or indicated by the second SRI domain (SRS resource#5 and SRS resource#7), correspond to PTRS index 0.

[0210] In some possible implementations, if the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each of the two SRI domains are unique, then the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each of the SRI domains are applied respectively.

[0211] For example, taking the configuration of the above SRS resource sets as an example, if the first SRI equals 7 and the second SRI equals 6, that is, the first SRI configures or indicates SRS resource #1 and SRS resource #2, and both of these SRS resources correspond to PTRSindex1. The second SRI field configures or indicates SRS resource #4 and SRS resource #7, and both correspond to PTRSindex0. Then the terminal device can determine that the PTRS port index value corresponding to all SRS resources in the first SRS resource set or one or more SRS resources configured or indicated by the first SRI field is index1, and the PTRS port index value corresponding to all SRS resources in the second SRS resource set or one or more SRS resources configured or indicated by the second SRI field is index0.

[0212] Step 602: Determine the DMRS ports corresponding to one or more SRS resources with the same PTRS port index value in each SRS resource set, and share the same PTRS port. In different SRS resource sets, the DMRS ports corresponding to SRS resources with different or the same PTRS port index values ​​are different or the same.

[0213] Step 603: Based on the association relationship indication between PTRS and DMRS ports, determine the actual DMRS port associated with each PTRS.

[0214] Step 604: Based on the actual number of PTRS sending ports and the DMRS port actually associated with the PTRS sending port, send PTRS to the network device.

[0215] The specific implementation of steps 602 and 604 above can be found in the detailed description of other embodiments of this disclosure, and will not be repeated here.

[0216] In this embodiment of the disclosure, under the STxMP transmission configuration, when the network device schedules PUSCH for SDM multiplexing mode based on NCB multi-TRP transmission, the terminal device can determine one or more SRS resources corresponding to the same PTRS port index value according to the network device configuration. One or more SRS resources in different SRS resource sets associated with different SRI domain configurations or indications may have different or the same PTRS port index values. Then, based on the DMRS ports included in the DMRS port group sharing the same PTRS port and the association relationship indication between PTRS and DMRS, the actual DMRS port associated with each PTRS port is determined. Thus, based on the actual number of PTRS sending ports and the DMRS port associated with the sending PTRS port, the PTRS is sent to the network device. This achieves reliable PTRS transmission under multi-TRP transmission scheduling, providing conditions for accurate CPE estimation under the STxMP transmission configuration.

[0217] Please see Figure 7 , Figure 7 This is a flowchart illustrating another uplink PTRS transmission method provided in an embodiment of this disclosure, which is executed by a network device. Figure 7 As shown, the method may include, but is not limited to, the following steps:

[0218] Step 701: When the terminal device is configured to transmit STxMP simultaneously via uplink multi-panel, and the scheduling PUSCH is based on non-codebook-based SDM transmission, the uplink PTRS transmission parameters of the terminal device are determined based on the configuration information sent to the terminal device. The PTRS transmission parameters include the actual number of PTRS transmission ports and the DMRS port actually associated with each PTRS port. Different PTRS ports are associated with different DMRS ports.

[0219] Optionally, PUSCH transmission can be of any of the following types: scheduled PUSCH, unscheduled PUSCH type 1, and unscheduled PUSCH type 2.

[0220] Optionally, the configuration information includes at least the maximum number of PTRS ports, an indication of the association between the PTRS and the demodulation reference signal DMRS ports, and DMRS port configuration information.

[0221] In some possible implementations, the maximum number of PTRS ports can be sent by the network device via Radio Resource Control (RRC) messages, and the association between PTRS and DMRS ports and DMRS port configuration information can be sent by the network device via DCI signaling. This disclosure does not limit this.

[0222] In some possible implementations, under STxMP configuration, when scheduled as a single TRP (STRP) transmission, the maximum number of PTRS ports can be 2; under SFN transmission scheduled as a multi-TRP transmission, the maximum number of PTRS ports is 1 or 2; and under SDM transmission scheduled as a multi-TRP transmission, the maximum number of PTRS ports is 2.

[0223] In some possible implementations, the maximum number of PTRS ports may be configured to be one, which can be applied to single TRP transmission, SFN transmission, and SDM transmission. In other words, the network device may configure a maximum number of PTRS ports for the terminal device.

[0224] In other words, for single TRP transmission, SFN transmission and SDM transmission, the maximum number of PTRS ports that the terminal device can use is the same, and the maximum value of the PTRS maximum port number configuration parameter can be 2.

[0225] In some possible implementations, the maximum number of PTRS ports may also be configured to be two, one of which is used for single TRP transmission, and the other is used for multi-TRP transmission under STxMP, which includes at least SFN transmission and SDM transmission.

[0226] In other words, for single TRP transmission, SFN transmission, and SDM transmission, the network device will send two PTRS maximum port number configuration parameters. The PTRS maximum port number applicable to multi-TRP transmission under STxMP is independent of the PTRS maximum port number applicable to single TRP transmission. These two parameters can be sent by the network device via a single signaling message, or they can be sent separately via two separate signaling messages; this disclosure does not limit this.

[0227] Optionally, the pin corresponds to the maximum number of PTRS ports under single TRP transmission, and its maximum value can be 2. The pin corresponds to the configuration parameter for the maximum number of PTRS ports under SFN transmission and SDM transmission, and its maximum value can also be 2.

[0228] In some possible implementations, the maximum number of PTRS ports may also be configured to be at least three, wherein one of the at least three PTRS maximum ports is used for single TRP transmission, another for SDM transmission, and another for SFN transmission.

[0229] In other words, for single TRP transmission, SFN transmission and SDM transmission, the network device will be configured with at least three maximum PTRS port numbers. These at least three parameters can be sent by the network device through a single signaling message, or they can be sent by the network device through three separate signaling messages. This disclosure does not limit this.

[0230] Optionally, the maximum number of PTRS ports corresponding to a single TRP transmission can be 2. The maximum number of PTRS ports applied to SDM transmission for multiple TRP transmission can also be 2. The maximum number of PTRS ports applied to SFN transmission for multiple TRP transmission can be 1 or 2.

[0231] Optionally, the association between the PTRS and DMRS ports can be indicated as shown in Tables 1 and 2 above. That is, the association between the PTRS and DMRS ports can differ when the PTRS is a single port versus when the PTRS is a dual port.

[0232] In some possible implementations, the DMRS port configuration information may include the type of DMRS port, the number of DMRS ports, the grouping information of the DMRS port, the antenna port corresponding to the DMRS port, etc., which are not limited in this disclosure.

[0233] Optionally, the network device may determine the actual number of PTRS transmission ports based on preset rules and configuration information sent to the terminal device, which may be 0, 1, or 2.

[0234] In some possible implementations, if the maximum number of PTRS ports is 1, then the actual number of PTRS transmission ports determined by the network device may be 0 or 1.

[0235] Optionally, if the PTRS is not configured for the terminal device in the higher-layer parameter DMRS-UplinkConfig, the actual number of PTRS transmission ports determined by the network device will be 0, meaning no PTRS is transmitted uplink. If the network device configures the parameter "UL-PTRS-present" for the terminal device, and the maximum value of the maximum number of PTRS ports is 1, then the actual number of PTRS transmission ports determined by the network device may be 0 or 1.

[0236] In some possible implementations, if the maximum number of PTRS ports is 2, then the actual number of PTRS transmission ports determined by the network device may be 0, 1, or 2.

[0237] Optionally, if the PTRS is not configured for the terminal device in the higher-layer parameter DMRS-UplinkConfig, the number of actual transmitting ports corresponding to PTRS determined by the network device will be 0, meaning that PTRS is not transmitted uplink. If the network device configures the parameter "UL-PTRS-present" for the terminal device, and the maximum number of ports corresponding to PTRS is 2, then the number of actual transmitting ports corresponding to PTRS determined by the network device may be 0, 1, or 2.

[0238] Optionally, each PTRS port may be associated with one or more DMRS ports, and different PTRS ports may be associated with different DMRS ports. This disclosure does not limit this.

[0239] In some possible implementations, the preset rules are rules used to assist terminal devices in determining uplink PTRS transmission parameters, which can be determined by network devices based on protocol agreements.

[0240] Optionally, the network device may also configure the preset rule to the terminal device, for example, by sending the preset rule to the terminal device via an RRC message. This disclosure does not limit this.

[0241] Step 702: Receive PTRS sent by the terminal device based on the uplink PTRS transmission parameters.

[0242] In this embodiment of the disclosure, under the STxMP transmission configuration, when the terminal device is scheduled to transmit PUSCH as SDM transmission based on non-codebook NCB, the network device determines the PTRS transmission parameters according to preset rules based on the sent configuration information, and then transmits PTRS based on the PTRS transmission parameters, thereby realizing reliable PTRS transmission and providing conditions for accurate estimation of CPE under the STxMP transmission configuration.

[0243] Please see Figure 8 , Figure 8 This is a flowchart illustrating another uplink PTRS transmission method provided in this embodiment of the disclosure, which is executed by a terminal device. Figure 8 As shown, the method may include, but is not limited to, the following steps:

[0244] Step 801: When the terminal device is configured to transmit STxMP simultaneously via uplink multi-panel, and the scheduling PUSCH is in SDM multiplexing mode based on non-codebook single TRP transmission, the actual number of PTRS transmission ports is determined to be 1 or 2. The actual number of PTRS transmission ports is determined by the number of PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the Probe Reference Signal Resource Indicator (SRI) domain. The one or more SRS resources are included in the SRS resource set associated with the SRI domain.

[0245] Optionally, for unscheduled PUSCH transmission, the network device can determine the actual number of PTRS transmission ports based on the number of PTRS port index values ​​corresponding to one or more SRS resources configured in the SRI field; while for scheduled PUSCH, the network device can determine the actual number of PTRS transmission ports based on the number of PTRS port index values ​​corresponding to one or more SRS resources indicated in the SRI field.

[0246] In this embodiment of the disclosure, although the network device is configured for STxMP transmission, during multi-TRP transmission, the SRS resource set indicator can be dynamically used to switch between single-TRP and MTRP transmissions, indicating which SRS resource set a specific PUSCH transmission is associated with. Therefore, when the SRS resource set indicator indicates single-TRP transmission, the network device can determine the actual number of PTRS transmission ports based on the number of PTRS port index values ​​corresponding to one or more SRS resources configured or indicated in the SRI field.

[0247] For example, when the dynamic indication of the SRS resource set indicator field is single TRP transmission, the SRI field configures or indicates 3 SRS resources, and the PTRS port index values ​​(ptrs-PortIndex) corresponding to these three SRS resources are index0, index1, and index0, respectively. That is to say, the SRS resources in the SRS resource set associated with the SRI field correspond to two PTRS port index values, index0 and index1. Then the network device can determine that the actual number of PTRS transmission ports is 2.

[0248] In other words, when scheduled as a single TRP transmission, the actual number of PTRS sending ports can be determined based on the number of PTRS port index values ​​corresponding to the SRS resources in the SRS resource set associated with the configured SRI domain.

[0249] Optionally, different sets of SRS resources are associated with the transmission occupancy (TO) of PUSCH on the antenna panel, TRP, or beam information.

[0250] Different SRS resource sets can be associated with PUSCH transmission timings sent on different panels to different TRP directions. Different directions correspond to different beam information corresponding to different transmission configuration indication (TCI) states. For example, the first SRS resource set is associated with the first TCI state / first TRP, that is, it is sent to TRP1 through the corresponding PUSCH transmission timing. The second SRS resource set is associated with the second TCI state / second TRP, that is, it is sent to TRP2 through the corresponding PUSCH TO. The association between the SRS resource set and the TCI state / TRP can be determined by the different code points in the SRS resource set indication field of the DCI.

[0251] Step 802: Determine the DMRS ports corresponding to one or more SRS resources with the same PTRS port index value in the associated SRS resource set, and ensure that they share the same PTRS port.

[0252] Taking the above example, for the case where the maximum layer RANK number Lmax = 3, if the SRS resource set associated with the SRI domain configured in the network device contains three SRS resources: SRS route#0, SRS route#1, and SRS route#2, and the PTRS port index values ​​corresponding to these three SRS resources are index0, index1, and index0 respectively, and the DMRS ports corresponding to these three SRS resources are DMRS port#0, DMRS port#1, and DMRS port#2 respectively, when the value of the bit field mapped to the SRS resource index in the SRI indication is equal to (hereinafter referred to as SRI indication equal to) 6, refer to N in Table 5 above. SRSAs indicated by the SRI in column 3, the SRI specifically indicates SRS resource #0, SRS resource #1, and SRS resource #2. Therefore, the DMRS ports corresponding to the SRS resources indicated by the SRI are DMRS port #0, DMRS port #1, and DMRS port #2, respectively. The network device can then determine that the two DMRS ports (DMRS port #0 and DMRS port #2) corresponding to SRS resource #0 and SRS resource #2 share the PTRS port index value 'index0', while the DMRS port (DMRS port #1) corresponding to SRS resource #1 shares the antenna port with the PTRS port with the port index value 'index1'.

[0253] Alternatively, for the case where the maximum tier RANK number Lmax = 3, if the SRS resource set associated with the SRI domain configured in the network device contains four SRS resources: SRS route#0, SRS route#1, SRS route#2, and SRS route#3, and the PTRS port index values ​​corresponding to these four SRS resources are index0, index1, index1, and index0 respectively, and the DMRS ports corresponding to these four SRS resources are DMRS port#0, DMRS port#1, DMRS port#2, and DMRS port#3 respectively. When the SRI indication equals 11, refer to N in Table 5 above. SRS As indicated by the SRI in column 4, the SRI specifically indicates SRS resource#0, SRS resource#1, and SRS resource#3. Therefore, the DMRS ports corresponding to the SRS resources indicated by the SRI are DMRS port#0, DMRS port#1, and DMRS port#3, respectively. Thus, the network device can determine that the DMRS port#0 and DMRS port#3 corresponding to SRS resource#0 and SRS resource#3 share the PTRS port index value index0, while the DMRS port#1 corresponding to SRS resource#1 shares the antenna port with the PTRS port with the port index value index1.

[0254] Step 803: Based on the association relationship indication between PTRS and DMRS ports, determine the actual DMRS port associated with each PTRS.

[0255] In this embodiment of the disclosure, after the network device determines the DMRS port that can share each PTRS port, it can determine the DMRS port actually associated with the PTRS based on the association relationship indication between the PTRS and DMRS ports that has been sent (such as Table 1 above).

[0256] Taking the example of a network device configured with an SRI domain that contains 3 SRS resources, the network device is known to have 2 DMRS ports (DMRS port#0 and DMRS port#2) that share PTRS port 0. If the value of the PTRS-DMRS joint indication field is "1", as shown in Table 1 above, then it can be determined that DMRS port#2 is the DMRS port that PTRS port 0 is actually associated with.

[0257] Alternatively, taking the example that the SRS resource set associated with the SRI domain of the network device configured above contains 4 SRS resources, the network device knows that there are 2 DMRS ports (DMRS port#0 and DMRS port#3) sharing PTRS port 0. If the value of the PTRS-DMRS joint indication field is "1", see Table 1 above, then it can be determined that DMRS port#3 is the DMRS port actually associated with PTRS port 0.

[0258] In other words, network devices can determine the actual DMRS port used when sending PTRS in PUSCHTO transmission based on the association between PTRS and DMRS ports.

[0259] It should be noted that in the above examples, the one or more SRS resource index numbers configured or indicated in the SRI resource domain, the correspondence between SRS resources and PTRS port index numbers, and the correspondence between SRS resources and DMRS ports are all illustrative and should not be taken as a limitation on the scheme for determining the actual number of PTRS transmission ports in this disclosure.

[0260] Step 804: Based on the actual number of PTRS transmitting ports and the DMRS port actually associated with the PTRS transmitting port, receive the PTRS transmitted by the terminal device.

[0261] In this embodiment of the disclosure, under the STxMP transmission configuration, when the terminal device's PUSCH is scheduled for NCB-based SDM transmission, and under single TRP transmission, the network device determines the actual number of PTRS sending ports by the number of PRTS port index values ​​corresponding to one or more SRS resources configured or indicated by the SRI field. After determining one or more DMRS ports sharing the same PTRS port, it determines the actual DMRS port associated with each PTRS based on the association relationship indication between PTRS and DMRS ports. Therefore, based on the actual number of PTRS sending ports and the actual DMRS ports associated with each PTRS port, the network device receives the PTRS sent by the terminal device. This achieves reliable PTRS transmission under the STxMP transmission configuration and SDM transmission with PUSCH scheduled for single TRP transmission, providing conditions for accurate CPE estimation under the STxMP transmission configuration.

[0262] Please see Figure 9 , Figure 9 This is a flowchart illustrating another uplink PTRS transmission method provided in this embodiment of the disclosure, which is executed by a terminal device. Figure 9 As shown, the method may include, but is not limited to, the following steps:

[0263] Step 901: When the terminal device is configured to transmit STxMP simultaneously via uplink multi-panel, and the scheduling PUSCH is in SDM multiplexing mode based on non-codebook multi-TRP transmission, the actual number of PTRS transmission ports is determined to be 2. The PTRS port index values ​​corresponding to one or more first SRS resources configured or indicated by the first SRI field are all defaulted to the predefined first index value. The PTRS port index values ​​corresponding to one or more second SRS resources configured or indicated by the second SRI field are all defaulted to the predefined second index value. Among them, one or more first SRS resources are included in the first SRS resource set associated with the first SRI field, and one or more second SRS resources are included in the second SRS resource set associated with the second SRI field.

[0264] It should be noted that in the embodiments of this disclosure, "first SRS resource" and "second SRS resource" are used only to distinguish them as different SRS resources, and are not a limitation on the SRS resource index. In addition, "first SRS resource set" and "second SRS resource set" are also used only to distinguish them as different SRS resource sets, and are not a limitation on the SRS resource set index.

[0265] Optionally, the first index value can be index0, and the corresponding second index value can be index1; or, the first index value can be index1, and the second index value can be index0.

[0266] Optionally, different sets of SRS resources are associated with the timing of PUSCH transmission on the antenna panel, TRP, or beam information.

[0267] In other words, different SRS resource sets can be associated with PUSCH transmission timings sent on different panels to different TRP directions. Different directions correspond to different TCI states and their corresponding beam information. For example, the first SRS resource set is associated with the first TCI state / first TRP, that is, it is sent to TRP1 through the corresponding PUSCH transmission timing. The second SRS resource set is associated with the second TCI state / second TRP, that is, it is sent to TRP2 through the corresponding PUSCH TO. The association between the SRS resource set and the TCI state / TRP can be determined by the different code points in the SRS resource set indication field of the DCI.

[0268] In this embodiment of the disclosure, although the terminal device is configured as STxMP, during multi-TRP transmission, the SRS resource set indicator can be dynamically used to switch between single-TRP and MTRP transmissions, and to indicate which SRS resource set a specific PUSCH transmission is associated with. Therefore, when the SRS resource set indicator indicates multi-TRP transmission, the network device can determine that the PTRS port index values ​​corresponding to one or more first SRS resources configured or indicated by the first SRI field are all defaulted to predefined first index values, and the PTRS port index values ​​corresponding to one or more second SRS resources configured or indicated by the second SRI field are all defaulted to predefined second index values.

[0269] In other words, when the dynamic indication of the SRS resource set indicator field is multi-TRP transmission, the network device can ignore the ptrs-PortIndex parameter corresponding to all SRS resources configured for the terminal device, and redetermine the PTRS port index value corresponding to one or more SRS resources configured or indicated in each SRI field.

[0270] For example, when Lmax = 2 on each panel, during multi-TRP transmission, the network device can also determine the SRS resource set associated with each SRI through the code point in the configured SRS resource set indictor field. For instance, if the code point in the SRS resource set indictor field is "10", then the first SRI and the second SRI can be determined to be associated with the first SRS resource set and the second SRS resource set, respectively. The network device's first SRI domain is associated with four SRS resources in its first SRS resource set: SRS route#0, SRS route#1, SRS route#2, and SRS route#3. The corresponding PTRS-PortIndex values ​​for these four SRS resources are index0, index1, index1, and index1, respectively. Similarly, the second SRI domain is associated with four SRS resources in its second SRS resource set: SRS route#4, SRS route#5, SRS route#6, and SRS route#7. The corresponding PTRS port indices for these resources are index0, index1, index1, and index0, respectively. In this scenario, the PTRS port indices for the SRS resources in different SRS resource sets all contain both index0 and index1. This would cause DMRS ports sharing the same PTRS port to correspond to the same panel. Since different panels typically correspond to different CPE estimates, using independent PTRS ports for estimation is generally unnecessary. Furthermore, even according to the network configuration, if the actual number of PTRS on each panel corresponding to SRI1 and SRI2 is inconsistent, such as indicating that the first SRI is equal to 5, see N in Table 4 above. SRSAs can be seen from the meaning of the SRI indication in column 4, the first SRI specifically indicates SRS route #0 and SRS route #2, meaning that the actual number of PTRS ports corresponding to SRI1 is 2 (index0 and index1). The second SRI equals 7. Referring to Table 4 above, the second SRI specifically indicates SRS route #5 and SRS route #6, meaning that the actual number of PTRS ports corresponding to SRI2 is 1 (index1). At this time, the network device can directly ignore the above configuration and directly determine that the PTRS port index value corresponding to all SRS resources in the first SRS resource set, or only for the two SRS resources indicated by the first SRI (SRS route #0 and SRS route #2), is index0 (or index1), and the PTRS port index value corresponding to all SRS resources in the second SRS resource set, or only for the two SRS resources indicated by the second SRI (SRS route #5 and SRS route #6), is index1 (or index0).

[0271] Since the network device determines that the PTRS port index values ​​corresponding to all SRS resources in different SRS resource sets are different, that is, the network device determines that the actual number of PTRS transmission ports corresponding to each of the two SRS resource sets is 1, that is, the actual number of PTRS transmission ports is 2.

[0272] It should be noted that the first index value predefined in this disclosure may be associated with the first SRI field by default, and the second index value may be associated with the second SRI field by default; or, the first index value predefined may be associated with the first SRS resource by default, and the second index value may be associated with the second SRS resource by default. This disclosure does not limit this.

[0273] Step 902: Determine the DMRS ports corresponding to one or more SRS resources with the first index value in the first SRS resource set, and share the PTRS ports corresponding to the first index value; determine the DMRS ports corresponding to one or more SRS resources with the second index value in the second SRS resource set, and share the PTRS ports corresponding to the second index value.

[0274] Taking the above example, it can be seen that the PTRS port index value corresponding to all SRS resources in the first SRS resource set, or only the two SRS resources (SRS route#0 and SRS route#2) indicated by the first SRI, is the first index value (index0). Similarly, the PTRS port index value corresponding to all SRS resources in the second SRS resource set, or only the two SRS resources (SRS route#5 and SRS route#6) indicated by the second SRI, is the first index value (index1). In this case, if the DMRS configuration type (dmrs-Type) is 1 and the maximum allowed number of time domain symbols (maxLength) is 2, then Table 8 below can be used to determine the DMRS port configured for the terminal device.

[0275] For example, if the DMRS port indication value is 1, then based on Table 8, the network device can determine that the DMRS ports configured for the terminal devices are {0, 1, 4, 5}. Subsequently, the network device can determine the DMRS ports corresponding to one or more SRS resources indicated by each SRI based on certain rules. For example, it can determine that the DMRS ports of different CDM groups correspond to one or more SRS resources indicated by different SRIs.

[0276] Alternatively, determine that the first two DMRS ports correspond to one or more SRS resources indicated by the first SRI, and the latter two DMRS ports correspond to one or more SRS resources indicated by the second SRI. That is, the two SRS resources indicated by the first SRI correspond to DMRS prot#0 and DMRS prot#1, and it is known that the PTRS port index values ​​corresponding to SRS resource#0 and SRS route#2 are both index0. Therefore, it can be determined that DMRS prot#0 and DMRS prot#1 share the PTRS port corresponding to the first index value. The two SRS resources indicated by the second SRI correspond to DMRS prot#4 and DMRS prot#5, and it is known that the PTRS port index values ​​corresponding to SRS resource#5 and SRS route#6 are both index1. Therefore, it can be determined that DMRS prot#4 and DMRS prot#5 share the PTRS port corresponding to the second index value.

[0277] Alternatively, the latter two DMRS ports can be determined to correspond to one or more SRS resources indicated by the first SRI, and the former two DMRS ports can correspond to one or more SRS resources indicated by the second SRI. That is, the two SRS resources indicated by the first SRI correspond to DMRS prot#4 and DMRS prot#5, meaning that DMRS prot#4 and DMRS prot#5 share the PTRS port corresponding to the first index value. The two SRS resources indicated by the second SRI correspond to DMRS prot#0 and DMRS prot#1, meaning that DMRS prot#0 and DMRS prot#1 share the PTRS port corresponding to the second index value.

[0278] Step 904: Based on the association indication between PTRS and DMRS ports, determine the actual DMRS port associated with each PTRS.

[0279] In this embodiment of the disclosure, after the network device determines the DMRS port that can share each PTRS port, it can determine the DMRS port actually associated with the PTRS based on the received association relationship indication between the PTRS and DMRS ports (such as Table 2 above).

[0280] Taking the above example, if the first index value is index0 and the second index value is index2, then the terminal device shares two DMRS ports with PTRS index 0 in the known first SRS resource set, namely DMRS prot#0 and DMRS prot#1, and two DMRS ports with PTRS index 1, namely DMRS prot#4 and DMRS prot#5. If the value of the PTRS-DMRS joint indicator field is "01", that is, the high-order bit value is 0, then it can be determined that the DMRS port actually associated with PTRS port 0 is the first DMRS port between DMRS prot#0 and DMRS prot#1, which is DMRS prot#0. Correspondingly, if the low-order bit value is 1, it means that the DMRS port actually associated with PTRS port 1 is the second DMRS port between DMRS prot#4 and DMRS prot#5, which is DMRS prot#5.

[0281] In other words, network devices can determine the actual DMRS port used when sending each PTRS in a PUSCHTO transmission based on the association between PTRS and DMRS ports.

[0282] It should be noted that in the above examples, the one or more SRS resource index numbers configured or indicated in the SRI resource domain, the correspondence between SRS resources and PTRS port index numbers, and the correspondence between SRS resources and DMRS ports are all illustrative and should not be taken as a limitation on the scheme for determining the actual number of PTRS transmission ports in this disclosure.

[0283] Step 904: Based on the actual number of PTRS transmitting ports and the DMRS port actually associated with the PTRS transmitting port, receive the PTRS transmitted by the terminal device.

[0284] In this embodiment of the disclosure, when the terminal device is configured for STxMP transmission and the network device schedules the PUSCH for SDM multiplexing based on NCB multi-TRP transmission, the network device first determines that the actual number of PTRS sending ports is 2. The PTRS port index value corresponding to one or more first SRS resources configured or indicated by the first SRI field is the first index value, and the PTRS port index value corresponding to one or more second SRS resources configured or indicated by the second SRI field is the second index value. After determining one or more DMRS ports that share the PTRS ports corresponding to the first and second index values ​​respectively, the network device determines the actual DMRS port associated with each PTRS based on the association relationship between PTRS and DMRS ports. Then, based on the actual number of PTRS sending ports and the DMRS port associated with the port sending the PTRS, the network device sends the PTRS to the network device. This achieves reliable PTRS transmission under the SDM multiplexing mode of multi-TRP transmission, providing conditions for accurate CPE estimation under the STxMP transmission configuration.

[0285] Please see Figure 10 , Figure 10 This is a flowchart illustrating another uplink PTRS transmission method provided in this embodiment of the disclosure, which is executed by a terminal device. Figure 10 As shown, the method may include, but is not limited to, the following steps:

[0286] Step 1001: When the terminal device is configured to transmit STxMP simultaneously via uplink multi-panel, and the scheduling PUSCH is in SDM multiplexing mode based on non-codebook multi-TRP transmission, the actual number of PTRS transmission ports is determined to be 2. Based on the network device configuration, one or more SRS resources corresponding to the same PTRS port index are determined in the same SRI domain configuration or indication. The PTRS port index values ​​corresponding to one or more SRS resources in different SRS resource sets associated with different SRI domain configurations or indications are different.

[0287] Different SRS resource sets are associated with the transmission timing (TO) of PUSCH on the antenna panel, TRP, or beam information.

[0288] In other words, different SRS resource sets can be associated with PUSCH transmission timings sent on different panels to different TRP directions. Different directions correspond to different TCI states and their corresponding beam information. For example, the first SRS resource set is associated with the first TCI state / first TRP, that is, it is sent to TRP1 through the corresponding PUSCH transmission timing. The second SRS resource set is associated with the second TCI state / second TRP, that is, it is sent to TRP2 through the corresponding PUSCH TO. The association between the SRS resource set and the TCI state / TRP can be determined by the different code points in the SRS resource set indication field of the DCI.

[0289] In this embodiment of the disclosure, during multi-TRP transmission, the network device can dynamically switch between STRP and MTRP transmissions based on the dynamic indication of the SRS resource set indicator field. Therefore, when determining the actual number of PTRS transmission ports, the network device can first determine whether it is currently performing STRP or MTRP transmission. If the SRS resource set indicator indicates multi-TRP transmission, the PTRS port index values ​​corresponding to one or more SRS resources in each SRS resource set configured by the network device can be filtered first to determine the actual number of PTRS transmission ports based on the filtered PTRS port index values.

[0290] For example, when Lmax = 2 on each panel, during multi-TRP transmission, the network device determines the SRS resource set associated with each SRI by the code point in the configured SRS resource set indictor field. For instance, if the code point in the SRS resource set indictor field is "10", then the first SRI and the second SRI can be determined to be associated with the first SRS resource set and the second SRS resource set, respectively. The network device's first SRI domain is associated with four SRS resources in its first SRS resource set: SRS route#0, SRS route#1, SRS route#2, and SRS route#3. The corresponding PTRS-PortIndex values ​​for these four SRS resources are index0, index1, index1, and index1, respectively. Similarly, the second SRI domain is associated with four SRS resources in its second SRS resource set: SRS route#4, SRS route#5, SRS route#6, and SRS route#7. The corresponding PTRS port indices are index0, index1, index1, and index0, respectively. In this case, the PTRS port indices for the SRS resources in different SRS resource sets all contain both index0 and index1. This would cause DMRS ports sharing the same PTRS port to correspond to the same panel. Since different panels typically correspond to different CPE estimates, using independent PTRS ports for estimation is unreasonable. At the same time, even according to the network configuration, the number of PTRS on each panel corresponding to SRI1 and SRI2 may be inconsistent. Therefore, when the SDM multiplexing mode is scheduled for multi-TRP transmission, the network device can determine that the first SRI field can only configure or indicate one or more SRS resources corresponding to index0 (or index1), and the second SRI field can only configure or indicate one or more SRS resources corresponding to index1 (or index0).

[0291] If the first SRI is indicated to be 5, see N in Table 4 above. SRSFrom the meaning of the SRI indications in column 4, we can see that the first SRI specifically indicates SRS route #0 and SRS route #2, meaning that the actual number of PTRS ports corresponding to SRI1 is 2 (index0 and index1). The second SRI equals 7, as shown in Table 4 above, indicating that the second SRI specifically indicates SRS route #5 and SRS route #6, meaning that the actual number of PTRS ports corresponding to SRI2 is 1 (index1). If the first SRI field only configures or indicates the SRS resource corresponding to index0, and the second SRI field configures or indicates the SRS resource corresponding to index1, then when the first SRI equals 5, the network device can determine that SRS resource #0 and SRS route #2 indicated by the first SRI both correspond to PTRS index0, and when the second SRI equals 7, resource #5 and SRS resource #6 indicated by the second SRI both correspond to PTRS index1.

[0292] In other words, the network device determines that the actual number of PTRS transmission ports is 2 when the SDM multiplexing mode is scheduled for multiple TRP transmission.

[0293] In some possible implementations, if one or more SRS resources configured or indicated in one SRI domain correspond to only one PTRS port index value, then another SRI domain is configured or indicated to correspond to one or more SRS resources corresponding to another PTRS port index value.

[0294] For example, if the first SRI equals 7, as shown in Table 4 above, the first SRI indicates SRS resource #1 and SRS resource #2, both of which correspond to PTRS index 1. If the second SRI equals 8, as shown in Table 4 above, the second SRI indicates SRS resource #5 and SRS resource #7, both of which correspond to PTRS index 1 and index 0 respectively. Therefore, it can be determined that all SRS resources in the first SRS resource set, or one or more SRS resources configured or indicated by the first SRI domain, correspond to PTRS index 1, and all SRS resources in the second SRS resource set, or one or more SRS resources configured or indicated by the second SRI domain, correspond to PTRS index 0.

[0295] In some possible implementations, when the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the two SRI domains are not unique, the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each SRI domain are determined by a predefined method.

[0296] For example, a predefined configuration might be that one or more SRS resources configured or indicated by the first SRI domain correspond to PTRS port index value 'index0', and one or more SRS resources configured or indicated by the second SRI domain correspond to PTRS port index value 'index1'. Then, when the first SRI equals 5 and the second SRI equals 8, meaning the first SRI indicates SRS resource#0 (corresponding to PTRS index0) and SRS resource#2 (corresponding to PTRS index1), and the second SRI indicates SRS resource#5 (corresponding to PTRS index1) and SRS resource#7 (corresponding to PTRS index0), it can be determined that all SRS resources in the first SRS resource set, or one or more SRS resources configured or indicated by the first SRI domain, correspond to PTRS index0 (e.g., SRS resource#0 and SRS resource#2), and all SRS resources in the second SRS resource set, or one or more SRS resources configured or indicated by the second SRI domain, correspond to PTRS index1.

[0297] Alternatively, it can be determined that the SRS resource #0 and SRS resource #2 configured or indicated by the first SRI field correspond to PTRS port index1, and the SRS resource #5 and SRS resource #7 configured or indicated by the second SRI field correspond to PTRS index0.

[0298] In some possible implementations, if the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the two SRI domains are all unique, the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each SRI domain shall be applied respectively.

[0299] For example, taking the configuration of the above SRS resource sets as an example, if the first SRI equals 7 and the second SRI equals 6, that is, the first SRI configures or indicates SRS resource #1 and SRS resource #2, and both of these SRS resources correspond to PTRSindex1. The second SRI field configures or indicates SRS resource #4 and SRS resource #7, and both correspond to PTRSindex0. Then the terminal device can determine that the PTRS port index value corresponding to all SRS resources in the first SRS resource set or one or more SRS resources configured or indicated by the first SRI field is index1, and the PTRS port index value corresponding to all SRS resources in the second SRS resource set or one or more SRS resources configured or indicated by the second SRI field is index0.

[0300] Step 1002: Determine the DMRS ports corresponding to one or more SRS resources with the same PTRS port index value in each SRS resource set, which share the same PTRS port. In different SRS resource sets, the DMRS ports corresponding to SRS resources with different PTRS port index values ​​share different PTRS ports.

[0301] Taking the above example, it can be seen that if the first SRI field is configured or indicates SRSresource#0 corresponding to PTRSindex0, and the second SRI field is configured or indicates resource#5 and SRS resource#6 corresponding to PTRSindex1. Additionally, if the DMRS configuration type (dmrs-Type) is 1 and the maximum allowed number of time domain symbols (maxLength) is 2, then Table 8 above can be used to determine the DMRS port configured for the terminal device.

[0302] For example, if the DMRS port indication value is 1, then based on Table 8, the terminal device can obtain the DMRS ports configured for the terminal as {0, 1, 4, 5}. Subsequently, the terminal device can determine the DMRS port corresponding to one or more SRS resources indicated by each SRI based on certain rules.

[0303] For example, determine that the DMRS ports of different CDM groups correspond to one or more SRS resources indicated by different SRIs.

[0304] Alternatively, determine that the first two DMRS ports correspond to one or more SRS resources indicated by the first SRI, and the latter two DMRS ports correspond to one or more SRS resources indicated by the second SRI. That is, the two SRS resources indicated by the first SRI (SRS resource#0 and SRS route#2) correspond to DMRS prot#0 and DMRS prot#1, and it is known that the PTRS port index values ​​corresponding to SRS resource#0 and SRS route#2 are both index0, thus it can be determined that DMRS prot#0 and DMRS prot#1 share PTRS index0. The two SRS resources indicated by the second SRI (SRS resource#5 and SRS route#6) correspond to DMRS prot#4 and DMRS prot#5, and it is known that the PTRS port index values ​​corresponding to SRS resource#5 and SRS route#6 are both index1, thus it can be determined that DMRS prot#4 and DMRS prot#5 share PTRS index1.

[0305] Alternatively, the latter two DMRS ports can be determined to correspond to one or more SRS resources indicated by the first SRI, and the former two DMRS ports can correspond to one or more SRS resources indicated by the second SRI. That is, the two SRS resources indicated by the first SRI (SRS resource#0 and SRS route#2) correspond to DMRS prot#4 and DMRS prot#5, meaning that DMRS prot#4 and DMRS prot#5 share PTRS index 0. The two SRS resources indicated by the second SRI (SRS resource#5 and SRS route#6) correspond to DMRS prot#0 and DMRS prot#1, meaning that DMRS prot#0 and DMRS prot#1 share PTRS index 1.

[0306] Step 1003: Based on the association relationship indication between PTRS and DMRS ports, determine the actual DMRS port associated with each PTRS.

[0307] In this embodiment of the disclosure, after the network device determines the DMRS port that can share each PTRS port, it can determine the DMRS port actually associated with the PTRS based on the received association relationship indication between the PTRS and DMRS ports (such as Table 2 above).

[0308] Taking the above example, the network device knows that the DMRS ports sharing PTRS index 0 are DMRS prot#0 and DMRS prot#1, and the DMRS ports sharing PTRS index 1 are DMRS prot#4 and DMRS prot#5. If the value of the PTRS-DMRS joint indicator field is "01", that is, the high-order bit is 0, then it can be determined that the DMRS port actually associated with PTRS port 0 is the first DMRS port among DMRS prot#0 and DMRS prot#1, that is, the DMRS port actually associated with PTRS index 0 is DMRS prot#0. Correspondingly, if the low-order bit is 1, it means that the DMRS port actually associated with PTRS port 1 is the second DMRS port among DMRSprot#4 and DMRS prot#5, that is, DMRSprot#5.

[0309] In other words, network devices can determine the actual DMRS port used when sending each PTRS in a PUSCHTO transmission based on the association between PTRS and DMRS ports.

[0310] It should be noted that in the above examples, the one or more SRS resource index numbers configured or indicated in the SRI resource domain, the correspondence between SRS resources and PTRS port index numbers, and the correspondence between SRS resources and DMRS ports are all illustrative and should not be taken as a limitation on the scheme for determining the actual number of PTRS transmission ports in this disclosure.

[0311] Step 1004: Receive PTRS sent by the terminal device based on the uplink PTRS transmission parameters.

[0312] In this embodiment of the disclosure, when the terminal device is configured for STxMP transmission and the network device schedules PUSCH for SDM multiplexing based on NCB multi-TRP transmission, the network device can determine one or more SRS resources corresponding to the same SRI domain configuration or indication and the same PTRS port index according to its configuration. The PTRS port index values ​​corresponding to one or more SRS resources in different SRS resource sets associated with different SRI domain configurations or indications are different. Then, based on the DMRS ports included in the DMRS port group sharing the same PTRS port and the association relationship indication between PTRS and DMRS, the actual DMRS port associated with each PTRS port is determined. Therefore, based on the actual number of PTRS sending ports and the actual DMRS ports associated with each PTRS port, PTRS is sent to the network device. This achieves reliable PTRS transmission under multi-TRP transmission scheduling, providing conditions for accurate CPE estimation under STxMP transmission configuration.

[0313] Please see Figure 11 , Figure 11 This is a flowchart illustrating another uplink PTRS transmission method provided in this embodiment of the disclosure, which is executed by a terminal device. Figure 11 As shown, the method may include, but is not limited to, the following steps:

[0314] Step 1101: Configure preset rules for the terminal device.

[0315] The specific implementation of step 1101 above can be found in the detailed description of other embodiments of this disclosure, and will not be repeated here.

[0316] Step 1102: When the terminal device is configured to transmit STxMP simultaneously via uplink multi-panel, and the scheduling PUSCH is in SDM multiplexing mode based on non-codebook multi-TRP transmission, the actual number of PTRS transmission ports is determined to be 2. Based on the network device configuration, one or more SRS resources corresponding to the same PTRS port index value are determined to be configured or indicated in the same SRI domain. One or more SRS resources in different SRS resource sets associated with different SRI domain configurations or indications have different or the same PTRS port index values.

[0317] Optionally, different sets of SRS resources are associated with the transmission occupancy (TO) of PUSCH on the antenna panel, TRP, or beam information.

[0318] In other words, different SRS resource sets can be associated with PUSCH transmission timings sent on different panels to different TRP directions. Different directions correspond to different TCI states and their corresponding beam information. For example, the first SRS resource set is associated with the first TCI state / first TRP, that is, it is sent to TRP1 through the corresponding PUSCH transmission timing. The second SRS resource set is associated with the second TCI state / second TRP, that is, it is sent to TRP2 through the corresponding PUSCH TO. The association between the SRS resource set and the TCI state / TRP can be determined by the different code points in the SRS resource set indication field of the DCI.

[0319] In this embodiment of the disclosure, when the terminal device is transmitting multiple TRPs, it can also dynamically switch between STRP and MTRP transmissions based on the dynamic indication of the SRS resource set indicator field. Therefore, when determining the actual number of uplink PTRS transmission ports of the terminal device, the network device can first determine whether it is currently transmitting STRP or MTRP. If the dynamic indication of the SRS resource set indicator field is multiple TRP transmission, the terminal device can filter the PTRS port index values ​​corresponding to the SRS resources included in the SRS resource set configured by the network device, and determine the actual number of PTRS transmission ports based on the filtered PTRS port index values.

[0320] For example, when Lmax = 2 on each panel, during multi-TRP transmission, the network device determines the SRS resource set associated with each SRI by the code point in the configured SRS resource set indictor field. For instance, if the code point in the SRS resource set indictor field is "10", then the first SRI and the second SRI can be determined to be associated with the first SRS resource set and the second SRS resource set, respectively. The network device's first SRI domain is associated with four SRS resources in its first SRS resource set: SRS route#0, SRS route#1, SRS route#2, and SRS route#3. The corresponding PTRS-PortIndex values ​​for these four SRS resources are index0, index1, index1, and index1, respectively. Similarly, the second SRI domain is associated with four SRS resources in its second SRS resource set: SRS route#4, SRS route#5, SRS route#6, and SRS route#7. The corresponding PTRS port indices are index0, index1, index1, and index0, respectively. In this case, the PTRS port indices for the SRS resources in different SRS resource sets all contain both index0 and index1. This would cause DMRS ports sharing the same PTRS port to correspond to the same panel. Since different panels typically correspond to different CPE estimates, using independent PTRS ports for estimation is unreasonable. At the same time, even according to the network configuration, the number of PTRS on each panel corresponding to SRI1 and SRI2 may not be consistent. Therefore, when the SDM multiplexing mode is scheduled for multi-TRP transmission, the network device can determine that the first SRI field can only configure or indicate one or more SRS resources corresponding to index0 (or index1), and the second SRI field can only configure or indicate one or more SRS resources whose PTRS port index values ​​are the same as or different from the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the first SRI field.

[0321] If the first SRI is specified as 5, see N in Table 4 above. SRSFrom the meaning of the SRI indications in column 4, we can see that the first SRI specifically indicates SRS route #0 and SRS route #2, meaning that the actual number of PTRS ports corresponding to SRI1 is 2 (index0 and index1). The second SRI equals 7, as shown in Table 4 above, indicating that the second SRI specifically indicates SRS route #5 and SRS route #6, meaning that the actual number of PTRS ports corresponding to SRI2 is 1 (index1). If the first SRI field configures or indicates the SRS resource corresponding to index0, the second SRI field can configure or indicate the SRS resource corresponding to index1. Therefore, when the first SRI equals 5, the network device can determine that SRS resource #0 and SRS route #2 indicated by the first SRI both correspond to PTRS index0, and when the second SRI equals 7, resource #5 and SRS resource #6 configured or indicated by the second SRI field both correspond to PTRS index1.

[0322] Alternatively, if the first SRI field configures or indicates the SRS resource corresponding to index0, and the second SRI field configures or indicates the SRS resource corresponding to index0, then when the first SRI equals 5 and the second SRI equals 7, the network device can determine that SRS resource#0 and SRS resource#2 configured or indicated by the first SRI field both correspond to PTRS index0, and resource#5 and SRS resource#6 configured or indicated by the second SRI field also correspond to PTRS index0, and so on.

[0323] In other words, the network device determines that the actual number of PTRS transmission ports is 2 when the SDM multiplexing mode is scheduled for multiple TRP transmission.

[0324] In some possible implementations, where one or more SRS resources configured or indicated in one SRI domain correspond to only one PTRS port index value, another SRI domain is configured or indicated to correspond to one or more SRS resources corresponding to the same or different PTRS port index values.

[0325] For example, if the first SRI equals 7, as shown in Table 4 above, the first SRI indicates SRS resource #1 and SRS resource #2, both of which correspond to PTRSindex1. If the second SRI equals 8, as shown in Table 4 above, the second SRI indicates SRS resource #5 and SRS resource #7, both of which correspond to PTRSindex1 and index0 respectively. Therefore, it can be determined that all SRS resources in the first SRS resource set, or one or more SRS resources configured or indicated by the first SRI field (e.g., SRS resource #1 and SRS resource #2), correspond to PTRSindex1. All SRS resources in the second SRS resource set, or SRS resources configured or indicated by the second SRI field (e.g., SRSresource #5 and SRS resource #7), correspond to PTRS port index1 or PTRSindex0.

[0326] In some possible implementations, when the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each of the two SRI domains are not unique, the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each SRI domain are determined by a predefined method.

[0327] For example, a predefined configuration might show one or more SRS resources configured or indicated by a first SRI field corresponding to a PTRS port index of index0, and one or more SRS resources configured or indicated by a second SRI field corresponding to a PTRS port index of index0. Then, when the first SRI equals 5 and the second SRI equals 8, meaning the first SRI indicates SRSresource#0 (corresponding to PTRSindex0) and SRS resource#2 (corresponding to PTRSindex1), and the second SRI indicates SRSresource#5 (corresponding to PTRSindex1) and SRS resource#7 (corresponding to PTRSindex0), it can be determined that all SRS resources in the first SRS resource set, or the SRS resources configured or indicated by the first SRI field (SRS resource#0 and SRS resource#2), correspond to PTRSindex0, and all SRS resources in the second SRS resource set, or the SRS resources configured or indicated by the second SRI field (SRS resource#5 and SRS resource#7), correspond to PTRSindex0.

[0328] In some possible implementations, if the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each of the two SRI domains are unique, then the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each of the SRI domains are applied respectively.

[0329] For example, taking the configuration of the above SRS resource sets as an example, if the first SRI is equal to 7 and the second SRI is equal to 6, that is, the first SRI configures or indicates SRS resource #1 and SRS resource #2, and both of these SRS resources correspond to PTRSindex1. The second SRI configures or indicates SRS resource #4 and SRS resource #7, and both correspond to PTRS index0. Then the terminal device can determine that the PTRS port index value corresponding to all SRS resources in the first SRS resource set or one or more SRS resources configured or indicated by the first SRI is index1, and the PTRS port index value corresponding to all SRS resources in the second SRS resource set or one or more SRS resources configured or indicated by the second SRI is index0.

[0330] Step 1102: Determine the DMRS ports corresponding to one or more SRS resources with the same PTRS port index value in each SRS resource set, and share the same PTRS port. In different SRS resource sets, the DMRS ports corresponding to SRS resources with different or the same PTRS port index values ​​are different or the same.

[0331] Step 1103: Based on the association relationship indication between PTRS and DMRS ports, determine the actual DMRS port associated with each PTRS.

[0332] Step 1104: Based on the actual number of PTRS transmitting ports and the DMRS port actually associated with the PTRS transmitting port, receive the PTRS transmitted by the terminal device.

[0333] The specific implementation of steps 1102 and 1104 above can be found in the detailed description of other embodiments of this disclosure, and will not be repeated here.

[0334] In this embodiment of the disclosure, when the terminal device is configured for STxMP transmission and the network device schedules PUSCH for SDM multiplexing based on NCB multi-TRP transmission, it determines one or more SRS resources corresponding to the same PTRS port index value based on the network device configuration. Different SRI domain configurations or indications may correspond to different or the same PTRS port index values ​​in different SRS resource sets. Then, based on the DMRS ports included in the DMRS port group sharing the same PTRS port and the association relationship between PTRS and DMRS, it determines the actual DMRS port associated with each PTRS port. Based on the actual number of PTRS sending ports and the DMRS port associated with the sending PTRS port, it sends PTRS to the network device. This achieves reliable PTRS transmission under multi-TRP transmission scheduling, providing conditions for accurate CPE estimation under STxMP transmission configuration.

[0335] Please see Figure 12 , Figure 12 This is a schematic diagram of the structure of a communication device provided in an embodiment of this disclosure. Figure 12 The communication device 1200 shown may include a processing module 1201 and a transceiver module 1202. The transceiver module 1202 may include a sending module and / or a receiving module. The sending module is used to implement the sending function, and the receiving module is used to implement the receiving function. The transceiver module 1202 can implement both sending and / or receiving functions.

[0336] It is understood that the communication device 1200 can be a terminal device, a device within a terminal device, or a device that can be used in conjunction with a terminal device.

[0337] The communication device 1200 is located on the terminal equipment side, wherein:

[0338] The processing module 1201 is used to determine the uplink PTRS transmission parameters based on the received configuration information when the network device schedules the physical uplink shared channel PUSCH as non-codebook spatial multiplexing SDM transmission under the configuration of simultaneous transmission of STxMP on multiple uplink panels. The PTRS transmission parameters include the number of actual PTRS transmission ports and the DMRS port actually associated with each PTRS port. Different PTRS ports are associated with different DMRS ports.

[0339] The transceiver module 1202 is used to send PTRS to the network device based on the uplink PTRS transmission parameters.

[0340] Optionally, the configuration information includes at least the maximum number of PTRS ports, an indication of the association between the PTRS and the demodulation reference signal DMRS ports, and DMRS port configuration information.

[0341] Optionally, the maximum number of PTRS ports is configured to 1;

[0342] The maximum number of ports in a single PTRS can be applied to single TRP transmission, SFN transmission, and SDM transmission.

[0343] Optionally, the maximum number of PTRS ports is configured to be two, wherein one of the maximum number of PTRS ports is used for single TRP transmission, and the other of the maximum number of PTRS ports is used for multi-TRP transmission under STxMP, wherein the multi-TRP transmission under STxMP includes at least SFN transmission and SDM transmission.

[0344] Optionally, the maximum number of PTRS ports is configured to be at least three;

[0345] Of these, one of the at least three maximum PTRS ports is used for single TRP transmission, another for SDM transmission, and the third for SFN transmission.

[0346] Optionally, the maximum number of PTRS ports is configured to be at least one of the following:

[0347] Under the single transmit / receive point STRP transmission mode, the maximum number of PTRS ports is 2.

[0348] In a single-frequency network (SFN) transmission scheduled for multiple TRP transmission, the maximum number of PTRS ports is 1 or 2.

[0349] In SDM transmission scheduled for multiple TRP transmissions, the maximum number of PTRS ports is 2.

[0350] Optionally, the processing module 1201 is further configured to:

[0351] Under the single TRP transmission scheduling, the actual number of PTRS transmission ports is determined to be 1 or 2. The actual number of PTRS transmission ports is determined by the number of PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the Probe Reference Signal Resource Indicator (SRI) domain, wherein the one or more SRS resources are included in the SRS resource set associated with the SRI domain.

[0352] Identify one or more SRS resources in the associated SRS resource set that correspond to the same PTRS port index value and share the same PTRS port.

[0353] Optionally, the processing module 1201 is further configured to:

[0354] In SDM multiplexing mode with multi-TRP transmission, the actual number of PTRS transmission ports is determined to be 2. The PTRS port index values ​​corresponding to one or more first SRS resources configured or indicated by the first SRI field are all defaulted to the predefined first index value. The PTRS port index values ​​corresponding to one or more second SRS resources configured or indicated by the second SRI field are all defaulted to the predefined second index value. The one or more first SRS resources are included in the first SRS resource set associated with the first SRI field, and the one or more second SRS resources are included in the second SRS resource set associated with the second SRI field.

[0355] The DMRS ports corresponding to one or more SRS resources in the first SRS resource set corresponding to the first index value are determined, and the PTRS ports corresponding to the first index value are shared. The DMRS ports corresponding to one or more SRS resources in the second SRS resource set corresponding to the second index value are also shared.

[0356] Optionally, the processing module 1201 is further configured to:

[0357] In the SDM multiplexing mode of scheduling for multiple TRP transmission, the actual number of PTRS transmission ports is determined to be 2. According to the configuration of the network device, one or more SRS resources corresponding to the same PTRS port index are determined by the same SRI domain configuration or indication. The PTRS port index values ​​corresponding to one or more SRS resources in different SRS resource sets associated with different SRI domain configurations or indications are different.

[0358] In each SRS resource set, one or more SRS resources corresponding to the same PTRS port index value are identified, and the same PTRS port is shared. In different SRS resource sets, SRS resources corresponding to different PTRS port index values ​​share the different PTRS ports respectively.

[0359] Optionally, the processing module 1201 is further configured to:

[0360] If one or more SRS resources configured or indicated in one SRI domain correspond to only one PTRS port index value, determine one or more SRS resources configured or indicated in another SRI domain that correspond to another PTRS port index value; or,

[0361] When the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the two SRI domains are not unique, the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each SRI domain are determined by a predefined method; or,

[0362] When the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the two SRI domains are all unique, the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each SRI domain shall be applied respectively.

[0363] Optionally, the processing module 1201 is further configured to:

[0364] In the SDM multiplexing mode of scheduling for multiple TRP transmission, the actual number of PTRS transmission ports is determined to be 2. According to the configuration of the network device, one or more SRS resources corresponding to the same PTRS port index value are determined to be configured or indicated in the same SRI domain. One or more SRS resources in different SRS resource sets associated with different SRI domain configurations or indications have different or the same PTRS port index values.

[0365] In each SRS resource set, one or more SRS resources corresponding to the same PTRS port index value are identified, and the same PTRS port is shared. In different SRS resource sets, SRS resources corresponding to different or the same PTRS port index values ​​share different or the same PTRS port.

[0366] Optionally, the processing module 1201 is further configured to:

[0367] If one or more SRS resources configured or indicated in one SRI domain correspond to only one PTRS port index value, determine one or more SRS resources configured or indicated in another SRI domain that correspond to the same or different PTRS port index values; or,

[0368] When the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each of the two SRI domains are not unique, the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each SRI domain are determined respectively by a predefined method; or,

[0369] If the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated in each of the two SRI domains are all unique, then the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated in each of the SRI domains shall be applied respectively.

[0370] Optionally, different sets of SRS resources are associated with the timing of PUSCH transmission on the antenna panel, TRP, or beam information.

[0371] Optionally, the processing module 1201 is further configured to:

[0372] Based on the association between the PTRS and the demodulation reference signal DMRS port, the actual DMRS port associated with each PTRS is determined.

[0373] Optionally, the PUSCH transmission can be of any of the following types:

[0374] Scheduled PUSCH, unscheduled PUSCH type 1, and unscheduled PUSCH type 2.

[0375] In this embodiment of the disclosure, under the STxMP transmission configuration, when the terminal device is scheduled to transmit PUSCH as SDM transmission based on non-codebook NCB, the network device determines the PTRS transmission parameters according to preset rules based on the sent configuration information, and then transmits PTRS based on the PTRS transmission parameters, thereby realizing reliable PTRS transmission and providing conditions for accurate estimation of CPE under the STxMP transmission configuration.

[0376] It is understandable that the communication device 1200 can be a network device, a device within a network device, or a device that can be used in conjunction with a network device.

[0377] Communication device 1200 is located on the network equipment side, wherein:

[0378] Processing module 1201 is used to determine the uplink PTRS transmission parameters of the terminal device based on the configuration information sent to the terminal device when the scheduling physical uplink shared channel PUSCH is non-codebook-based spatial multiplexing SDM transmission under the configuration of simultaneous uplink multi-panel transmission of STxMP in the terminal device. The PTRS transmission parameters include the number of actual PTRS transmission ports and the DMRS port actually associated with each PTRS port, and different PTRS ports are associated with different DMRS ports.

[0379] The transceiver module 1202 is used to receive the PTRS sent by the terminal device based on the uplink PTRS transmission parameters.

[0380] Optionally, the configuration information includes at least the maximum number of PTRS ports, an indication of the association between the PTRS and the demodulation reference signal DMRS ports, and DMRS port configuration information.

[0381] Optional,

[0382] The maximum number of PTRS ports is configured to one;

[0383] The maximum number of ports in a single PTRS can be applied to single TRP transmission, SFN transmission, and SDM transmission.

[0384] Optional,

[0385] The maximum number of PTRS ports is configured to be two, wherein one of the maximum number of PTRS ports is used for single TRP transmission, and the other of the maximum number of PTRS ports is used for multi-TRP transmission under STxMP, wherein the multi-TRP transmission under STxMP includes at least SFN transmission and SDM transmission.

[0386] Optional,

[0387] The maximum number of PTRS ports is configured to be at least three;

[0388] Of these, one of the at least three maximum PTRS ports is used for single TRP transmission, another for SDM transmission, and the third for SFN transmission.

[0389] Optionally, the maximum number of PTRS ports is configured to be at least one of the following:

[0390] Under the single transmit / receive point STRP transmission mode, the maximum number of PTRS ports is 2.

[0391] In a single-frequency network (SFN) transmission scheduled for multiple TRP transmission, the maximum number of PTRS ports is 1 or 2.

[0392] In SDM transmission scheduled for multiple TRP transmissions, the maximum number of PTRS ports is 2.

[0393] Optionally, the above-mentioned processing module 1201 is also used for:

[0394] Under the single TRP transmission scheduling, the actual number of the PTRS transmission ports is determined to be 1 or 2. The actual number of the PTRS transmission ports is determined by the number of PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the Probe Reference Signal Resource Indicator (SRI) domain, wherein the one or more SRS resources are included in the SRS resource set associated with the SRI domain.

[0395] Identify one or more SRS resources in the associated SRS resource set that correspond to the same PTRS port index value and share the same PTRS port.

[0396] Optionally, the above-mentioned processing module 1201 is also used for:

[0397] In SDM multiplexing mode with multi-TRP transmission, the actual number of PTRS transmission ports is determined to be 2. The PTRS port index values ​​corresponding to one or more first SRS resources configured or indicated by the first SRI field are all defaulted to the predefined first index value. The PTRS port index values ​​corresponding to one or more second SRS resources configured or indicated by the second SRI field are all defaulted to the predefined second index value. The one or more first SRS resources are included in the first SRS resource set associated with the first SRI field, and the one or more second SRS resources are included in the second SRS resource set associated with the second SRI field.

[0398] The DMRS ports corresponding to one or more SRS resources in the first SRS resource set corresponding to the first index value are determined, and the PTRS ports corresponding to the first index value are shared. The DMRS ports corresponding to one or more SRS resources in the second SRS resource set corresponding to the second index value are also shared.

[0399] Optionally, the above-mentioned processing module 1201 is also used for:

[0400] In the SDM multiplexing mode of scheduling for multiple TRP transmission, the actual number of PTRS transmission ports is determined to be 2, the configuration of the network device is determined, one or more SRS resources corresponding to the same PTRS port index are determined to be configured or indicated by the same SRI domain, and the PTRS port index values ​​corresponding to one or more SRS resources in different SRS resource sets associated with different SRI domain configurations or indications are different.

[0401] In each SRS resource set, one or more SRS resources corresponding to the same PTRS port index value are identified, and the same PTRS port is shared. In different SRS resource sets, SRS resources corresponding to different PTRS port index values ​​share the different PTRS ports respectively.

[0402] Optionally, the above-mentioned processing module 1201 is also used for:

[0403] If one or more SRS resources configured or indicated in one SRI domain correspond to only one PTRS port index value, determine one or more SRS resources configured or indicated in another SRI domain that correspond to another PTRS port index value; or,

[0404] When the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the two SRI domains are not unique, the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each SRI domain are determined by a predefined method; or,

[0405] When the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the two SRI domains are all unique, the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each SRI domain shall be applied respectively.

[0406] Optionally, the above-mentioned processing module 1201 is also used for:

[0407] In the SDM multiplexing mode of scheduling for multiple TRP transmission, the actual number of PTRS transmission ports is determined to be 2. According to the configuration of the network device, one or more SRS resources corresponding to the same PTRS port index value are determined to be configured or indicated in the same SRI domain. One or more SRS resources in different SRS resource sets associated with different SRI domain configurations or indications have different or the same PTRS port index values.

[0408] In each SRS resource set, one or more SRS resources corresponding to the same PTRS port index value are identified, and the same PTRS port is shared. In different SRS resource sets, SRS resources corresponding to different or the same PTRS port index values ​​share different or the same PTRS port.

[0409] Optionally, the above-mentioned processing module 1201 is also used for:

[0410] If one or more SRS resources configured or indicated in one SRI domain correspond to only one PTRS port index value, determine one or more SRS resources configured or indicated in another SRI domain that correspond to the same or different PTRS port index values; or,

[0411] When the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each of the two SRI domains are not unique, the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each SRI domain are determined respectively by a predefined method; or,

[0412] If the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated in each of the two SRI domains are all unique, then the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated in each of the SRI domains shall be applied respectively.

[0413] Optionally, different sets of SRS resources are associated with the timing of PUSCH transmission on the antenna panel, TRP, or beam information.

[0414] Optionally, the above-mentioned processing module 1201 is also used for:

[0415] Based on the association between the PTRS and the demodulation reference signal DMRS port, the actual DMRS port associated with each PTRS is determined.

[0416] Optionally, the PUSCH transmission can be of any of the following types:

[0417] Scheduled PUSCH, unscheduled PUSCH type 1, and unscheduled PUSCH type 2.

[0418] In this embodiment of the disclosure, under the STxMP transmission configuration, when the terminal device's PUSCH is scheduled for SDM transmission based on non-codebook NCB, the network device determines the PTRS transmission parameters according to preset rules based on the sent configuration information, and then transmits PTRS based on the PTRS transmission parameters. This achieves reliable PTRS transmission and provides conditions for accurate CPE estimation under the STxMP transmission configuration.

[0419] Please see Figure 13 , Figure 13 This is a schematic diagram of another communication device provided in an embodiment of this disclosure. The communication device 1300 can be a terminal device or a network device. It can also be a chip, chip system, or processor that supports the implementation of the above methods in a terminal device, or a chip, chip system, or processor that supports the implementation of the above methods in a network device. This device can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0420] The communication device 1300 may include one or more processors 1301. The processor 1301 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control the communication device (e.g., base station, baseband chip, terminal equipment, terminal equipment chip, DU or CU, etc.), execute computer programs, and process data from the computer programs.

[0421] Optionally, the communication device 1300 may further include one or more memories 1302, which may store a computer program 1304. The processor 1301 executes the computer program 1304 to cause the communication device 1300 to perform the method described in the above method embodiments. Optionally, the memory 1302 may also store data. The communication device 1300 and the memory 1302 may be provided separately or integrated together.

[0422] Optionally, the communication device 1300 may further include a transceiver 1305 and an antenna 1306. The transceiver 1305 may be referred to as a transceiver unit, transceiver, or transceiver circuit, etc., and is used to implement the transmission and reception functions. The transceiver 1305 may include a receiver and a transmitter. The receiver may be referred to as a receiver or receiving circuit, etc., and is used to implement the receiving function; the transmitter may be referred to as a transmitter or transmitting circuit, etc., and is used to implement the transmitting function.

[0423] Optionally, the communication device 1300 may further include one or more interface circuits 1307. The interface circuits 1307 are used to receive code instructions and transmit them to the processor 1301. The processor 1301 executes the code instructions to cause the communication device 1300 to perform the methods described in the above method embodiments.

[0424] The transceiver 1305 in the communication device 1300 can be used to perform the transmission and reception steps in the above method embodiments.

[0425] In one implementation, the processor 1301 may include a transceiver for implementing receive and transmit functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing receive and transmit functions may be separate or integrated. The aforementioned transceiver circuit, interface, or interface circuit can be used for reading and writing code / data, or it can be used for transmitting or relaying signals.

[0426] In one implementation, processor 1301 may store computer program 1303, which runs on processor 1301 and causes communication device 1300 to perform the methods described in the above method embodiments. Computer program 1303 may be embedded in processor 1301, in which case processor 1301 may be implemented in hardware.

[0427] In one implementation, the communication device 1300 may include circuitry capable of performing the functions of transmitting, receiving, or communicating as described in the foregoing method embodiments. The processor and transceiver described in this disclosure can be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (ASICs), printed circuit boards (PCBs), electronic devices, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal-oxide-semiconductor (CMOS), n-metal-oxide-semiconductor (NMOS), positive-channel metal-oxide-semiconductor (PMOS), bipolar junction transistors (BJTs), bipolar CMOS (BiCMOS), silicon-germanium (SiGe), gallium arsenide (GaAs), etc.

[0428] The communication device described in the above embodiments may be a network device or a terminal device, but the scope of the communication device described in this disclosure is not limited thereto, and the structure of the communication device may vary. Figure 13 The communication device may be a standalone device or part of a larger device. For example, the communication device may be:

[0429] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0430] (2) A collection of one or more ICs, optionally including storage components for storing data and computer programs;

[0431] (3) ASIC, such as modem;

[0432] (4) Modules that can be embedded in other devices;

[0433] (5) Receivers, terminal equipment, smart terminal equipment, cellular phones, wireless equipment, handheld devices, mobile units, vehicle-mounted equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.

[0434] (6) Others, etc.

[0435] For cases where the communication device can be a chip or a chip system, please refer to [link / reference]. Figure 14 The diagram shows the structure of the chip. Figure 14 The chip shown includes a processor 1301 and an interface 1402. The number of processors 1301 can be one or more, and the number of interfaces 1402 can be multiple.

[0436] Interface 1402 in the chip is used to perform the transmit and receive steps in the above method embodiments.

[0437] Optionally, the chip also includes a memory 1403 for storing necessary computer programs and data.

[0438] Those skilled in the art will also understand that the various illustrative logical blocks and steps listed in the embodiments of this disclosure can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented in hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can implement the described functionality using various methods for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of this disclosure.

[0439] This disclosure also provides a readable storage medium having instructions stored thereon that, when executed by a computer, implement the functions of any of the above method embodiments.

[0440] This disclosure also provides a computer program product that, when executed by a computer, implements the functions of any of the above method embodiments.

[0441] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program can be transferred from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0442] Those skilled in the art will understand that the various numerical designations such as "first," "second," etc., used in this disclosure are merely for the convenience of description and are not intended to limit the scope of the embodiments of this disclosure, nor do they indicate the order of events.

[0443] At least one of the features described in this disclosure can also be described as one or more, and multiple features can be two, three, four or more, and this disclosure does not impose any limitations. In the embodiments of this disclosure, for a technical feature, the technical features in that technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no sequential order or size order among the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0444] The correspondences shown in the tables of this disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values; this disclosure is not limiting. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, the correspondences shown in some rows of the tables in this disclosure may not be configured. Furthermore, appropriate modifications and adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the headers of the above tables can also use other names that the communication device can understand, and the values ​​or representations of the parameters can also be other values ​​or representations that the communication device can understand. In the implementation of the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables, etc.

Claims

1. A method for transmitting an uplink phase tracking reference signal (PTRS), characterized in that, Performed by a user equipment, the method includes: In the configuration of simultaneous transmission of STxMP across multiple uplink panels, when the network device schedules the physical uplink shared channel PUSCH as non-codebook spatial multiplexing (SDM) transmission, the uplink PTRS transmission parameters are determined based on the received configuration information. The PTRS transmission parameters include the actual number of PTRS transmission ports and the demodulation reference signal (DMRS) port actually associated with each PTRS port. Different PTRS ports are associated with different DMRS ports. Based on the uplink PTRS transmission parameters, PTRS is sent to the network device; The configuration information includes the maximum number of PTRS ports, which is configured to be two. One of the maximum number of PTRS ports is used for single transmission point TRP transmission, and the other is used for multi-TRP transmission under STxMP. The multi-TRP transmission under STxMP includes at least single-frequency network (SFN) transmission and SDM transmission.

2. The method as described in claim 1, characterized in that, The configuration information may include at least one or more of the following: an indication of the association between the PTRS and the demodulation reference signal DMRS port, or DMRS port configuration information.

3. The method as described in claim 1, characterized in that, The maximum number of PTRS ports is configured to be one. The maximum number of ports in a single PTRS can be applied to at least one of the following: single TRP transmission, SFN transmission, or SDM transmission.

4. The method as described in claim 1, characterized in that, The maximum number of PTRS ports is configured to be at least three; Of these, one of the at least three maximum PTRS ports is used for single TRP transmission, another for SDM transmission, and the third for SFN transmission.

5. The method as described in claim 1, characterized in that, The maximum number of PTRS ports is configured to be at least one of the following: Under the single transmit / receive point STRP transmission mode, the maximum number of PTRS ports is 2. In a single-frequency network (SFN) transmission scheduled for multiple TRP transmission, the maximum number of PTRS ports is 1 or 2. In SDM transmission scheduled for multiple TRP transmissions, the maximum number of PTRS ports is 2.

6. The method as described in claim 1, characterized in that, The determination of uplink PTRS transmission parameters based on the received configuration information includes: Under the single TRP transmission scheduling, the actual number of PTRS transmission ports is determined to be 1 or 2. The actual number of PTRS transmission ports is determined by the number of PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the Probe Reference Signal Resource Indicator (SRI) domain, wherein the one or more SRS resources are included in the SRS resource set associated with the SRI domain. Identify one or more SRS resources in the associated SRS resource set that correspond to the same PTRS port index value and share the same PTRS port.

7. The method as described in claim 1, characterized in that, The determination of uplink PTRS transmission parameters based on the received configuration information includes: In SDM multiplexing mode with multi-TRP transmission, the actual number of PTRS transmission ports is determined to be 2. The PTRS port index values ​​corresponding to one or more first SRS resources configured or indicated by the first SRI field are all defaulted to the predefined first index value. The PTRS port index values ​​corresponding to one or more second SRS resources configured or indicated by the second SRI field are all defaulted to the predefined second index value. The one or more first SRS resources are included in the first SRS resource set associated with the first SRI field, and the one or more second SRS resources are included in the second SRS resource set associated with the second SRI field. The DMRS ports corresponding to one or more SRS resources in the first SRS resource set corresponding to the first index value are determined, and the PTRS ports corresponding to the first index value are shared. The DMRS ports corresponding to one or more SRS resources in the second SRS resource set corresponding to the second index value are also shared.

8. The method as described in claim 1, characterized in that, The determination of uplink PTRS transmission parameters based on the received configuration information includes: In the SDM multiplexing mode of scheduling for multiple TRP transmission, the actual number of PTRS transmission ports is determined to be 2. According to the configuration of the network device, one or more SRS resources corresponding to the same PTRS port index are determined by the same SRI domain configuration or indication. The PTRS port index values ​​corresponding to one or more SRS resources in different SRS resource sets associated with different SRI domain configurations or indications are different. In each SRS resource set, one or more SRS resources corresponding to the same PTRS port index value are identified, and the same PTRS port is shared. In different SRS resource sets, SRS resources corresponding to different PTRS port index values ​​share the different PTRS ports respectively.

9. The method as described in claim 8, characterized in that, The determination of one or more SRS resources corresponding to the same PTRS port index within the same SRI domain configuration or indication, wherein the PTRS port index values ​​corresponding to one or more SRS resources in different SRS resource sets associated with different SRI domain configurations or indications are different, includes: If one or more SRS resources configured or indicated in one SRI domain correspond to only one PTRS port index value, determine one or more SRS resources configured or indicated in another SRI domain that correspond to another PTRS port index value; or, When the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the two SRI domains are not unique, the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each SRI domain are determined by a predefined method; or, When the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the two SRI domains are all unique, the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each SRI domain shall be applied respectively.

10. The method as described in claim 1, characterized in that, The determination of uplink PTRS transmission parameters based on the received configuration information includes: In the SDM multiplexing mode of scheduling for multiple TRP transmission, the actual number of PTRS transmission ports is determined to be 2. According to the configuration of the network device, one or more SRS resources corresponding to the same PTRS port index value are determined to be configured or indicated in the same SRI domain. One or more SRS resources in different SRS resource sets associated with different SRI domain configurations or indications have different or the same PTRS port index values. In each SRS resource set, one or more SRS resources corresponding to the same PTRS port index value are identified, and the same PTRS port is shared. In different SRS resource sets, SRS resources corresponding to different or the same PTRS port index values ​​share different or the same PTRS port.

11. The method as described in claim 10, characterized in that, The determination of one or more SRS resources corresponding to the same PTRS port index value in the same SRI domain configuration or indication, wherein one or more SRS resources in different SRS resource sets associated with different SRI domain configurations or indications correspond to different or the same PTRS port index values, includes: If one or more SRS resources configured or indicated in one SRI domain correspond to only one PTRS port index value, determine one or more SRS resources configured or indicated in another SRI domain that correspond to the same or different PTRS port index values; or, When the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each of the two SRI domains are not unique, the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each SRI domain are determined respectively by a predefined method; or, If the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated in each of the two SRI domains are all unique, then the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated in each of the SRI domains shall be applied respectively.

12. The method according to any one of claims 6-11, characterized in that, Different SRS resource sets are associated with at least one of the following: the timing of PUSCH transmission on the antenna panel, TRP, or beam information.

13. The method according to any one of claims 2-11, characterized in that, The process of determining uplink PTRS transmission parameters based on received configuration information further includes: Based on the association between the PTRS and the demodulation reference signal DMRS port, the actual DMRS port associated with each PTRS is determined.

14. The method according to any one of claims 1-11, characterized in that, The PUSCH transmission is of any of the following types: Scheduled PUSCH, unscheduled PUSCH type 1, or unscheduled PUSCH type 2.

15. A method for transmitting an uplink phase tracking reference signal (PTRS), characterized in that, Performed by a network device, the method includes: When the user equipment is configured to transmit STxMP simultaneously via multiple uplink panels, and the scheduled physical uplink shared channel PUSCH is a non-codebook-based spatial multiplexing (SDM) transmission, the uplink PTRS transmission parameters of the user equipment are determined based on the configuration information sent to the user equipment. The PTRS transmission parameters include the actual number of PTRS transmission ports and the DMRS ports actually associated with each PTRS port. Different PTRS ports are associated with different DMRS ports. Based on the uplink PTRS transmission parameters, receive the PTRS sent by the user equipment; The configuration information includes the maximum number of PTRS ports, which is configured to be two. One of the maximum PTRS ports is used for single TRP transmission, and the other is used for multi-TRP transmission under STxMP. The multi-TRP transmission under STxMP includes at least SFN transmission and SDM transmission.

16. The method as described in claim 15, characterized in that, The configuration information may include at least one or more of the following: an indication of the association between the PTRS and the demodulation reference signal DMRS port, or DMRS port configuration information.

17. The method as described in claim 15, characterized in that, The maximum number of PTRS ports is configured to be one; The maximum number of ports in a single PTRS can be applied to at least one of the following: single TRP transmission, SFN transmission, or SDM transmission.

18. The method as described in claim 15, characterized in that, The maximum number of PTRS ports is configured to be at least three; Of these, one of the at least three maximum PTRS ports is used for single TRP transmission, another for SDM transmission, and the third for SFN transmission.

19. The method as described in claim 15, characterized in that, The maximum number of PTRS ports is configured to be at least one of the following: Under the single transmit / receive point STRP transmission mode, the maximum number of PTRS ports is 2. In a single-frequency network (SFN) transmission scheduled for multiple TRP transmission, the maximum number of PTRS ports is 1 or 2. In SDM transmission scheduled for multiple TRP transmissions, the maximum number of PTRS ports is 2.

20. The method as described in claim 15, characterized in that, The step of determining the uplink PTRS transmission parameters of the user equipment based on the configuration information sent to the user equipment includes: Under the single TRP transmission scheduling, the actual number of the PTRS transmission ports is determined to be 1 or 2. The actual number of the PTRS transmission ports is determined by the number of PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the Probe Reference Signal Resource Indicator (SRI) domain, wherein the one or more SRS resources are included in the SRS resource set associated with the SRI domain. Identify one or more SRS resources in the associated SRS resource set that correspond to the same PTRS port index value and share the same PTRS port.

21. The method as described in claim 15, characterized in that, The determination of uplink PTRS transmission parameters based on the configuration information sent to the user equipment includes: In SDM multiplexing mode with multi-TRP transmission, the actual number of PTRS transmission ports is determined to be 2. The PTRS port index values ​​corresponding to one or more first SRS resources configured or indicated by the first SRI field are all defaulted to the predefined first index value. The PTRS port index values ​​corresponding to one or more second SRS resources configured or indicated by the second SRI field are all defaulted to the predefined second index value. The one or more first SRS resources are included in the first SRS resource set associated with the first SRI field, and the one or more second SRS resources are included in the second SRS resource set associated with the second SRI field. The DMRS ports corresponding to one or more SRS resources in the first SRS resource set corresponding to the first index value are determined, and the PTRS ports corresponding to the first index value are shared. The DMRS ports corresponding to one or more SRS resources in the second SRS resource set corresponding to the second index value are also shared.

22. The method as described in claim 15, characterized in that, The determination of uplink PTRS transmission parameters based on the configuration information sent to the user equipment includes: In the SDM multiplexing mode of scheduling for multiple TRP transmission, the actual number of PTRS transmission ports is determined to be 2. According to the configuration of the network device, one or more SRS resources corresponding to the same PTRS port index are determined by the same SRI domain configuration or indication. The PTRS port index values ​​corresponding to one or more SRS resources in different SRS resource sets associated with different SRI domain configurations or indications are different. In each SRS resource set, one or more SRS resources corresponding to the same PTRS port index value are identified, and the same PTRS port is shared. In different SRS resource sets, SRS resources corresponding to different PTRS port index values ​​share the different PTRS ports respectively.

23. The method as described in claim 22, characterized in that, The determination of one or more SRS resources corresponding to the same PTRS port index within the same SRI domain configuration or indication, wherein the PTRS port index values ​​corresponding to one or more SRS resources in different SRS resource sets associated with different SRI domain configurations or indications are different, includes: If one or more SRS resources configured or indicated in one SRI domain correspond to only one PTRS port index value, determine one or more SRS resources configured or indicated in another SRI domain that correspond to another PTRS port index value; or, When the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the two SRI domains are not unique, the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each SRI domain are determined by a predefined method; or, When the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the two SRI domains are all unique, the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each SRI domain shall be applied respectively.

24. The method as described in claim 15, characterized in that, The determination of uplink PTRS transmission parameters based on the configuration information sent to the user equipment includes: In the SDM multiplexing mode of scheduling for multiple TRP transmission, the actual number of PTRS transmission ports is determined to be 2. According to the configuration of the network device, one or more SRS resources corresponding to the same PTRS port index value are determined to be configured or indicated in the same SRI domain. One or more SRS resources in different SRS resource sets associated with different SRI domain configurations or indications have different or the same PTRS port index values. In each SRS resource set, one or more SRS resources corresponding to the same PTRS port index value are identified, and the same PTRS port is shared. In different SRS resource sets, SRS resources corresponding to different or the same PTRS port index values ​​share different or the same PTRS port.

25. The method as described in claim 24, characterized in that, The determination of one or more SRS resources corresponding to the same PTRS port index value in the same SRI domain configuration or indication, wherein one or more SRS resources in different SRS resource sets associated with different SRI domain configurations or indications correspond to different or the same PTRS port index values, includes: If one or more SRS resources configured or indicated in one SRI domain correspond to only one PTRS port index value, determine one or more SRS resources configured or indicated in another SRI domain that correspond to the same or different PTRS port index values; or, When the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each of the two SRI domains are not unique, the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by each SRI domain are determined respectively by a predefined method; or, If the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated in each of the two SRI domains are all unique, then the PTRS port index values ​​corresponding to one or more SRS resources configured or indicated in each of the SRI domains shall be applied respectively.

26. The method according to any one of claims 20-25, characterized in that, Different SRS resource sets are associated with at least one of the following: the timing of PUSCH transmission on the antenna panel, TRP, or beam information.

27. The method according to any one of claims 16-25, characterized in that, The step of determining the uplink PTRS transmission parameters based on the configuration information sent to the user equipment further includes: Based on the association between the PTRS and the demodulation reference signal DMRS port, the actual DMRS port associated with each PTRS is determined.

28. The method according to any one of claims 15-25, characterized in that, The PUSCH transmission is of any of the following types: Scheduled PUSCH, unscheduled PUSCH type 1, or unscheduled PUSCH type 2.

29. A communication device, characterized in that, include: The processing module is used to determine the uplink PTRS transmission parameters based on the received configuration information when the network device schedules the physical uplink shared channel PUSCH as non-codebook space division multiplexing (SDM) transmission under the configuration of simultaneous transmission of STxMP on multiple uplink panels. The PTRS transmission parameters include the number of actual PTRS transmission ports and the DMRS port actually associated with each PTRS port. Different PTRS ports are associated with different DMRS ports. The transceiver module is used to send PTRS to the network device based on the uplink PTRS transmission parameters; The configuration information includes the maximum number of PTRS ports, which is configured to be two. One of the maximum PTRS ports is used for single TRP transmission, and the other is used for multi-TRP transmission under STxMP. The multi-TRP transmission under STxMP includes at least SFN transmission and SDM transmission.

30. The communication device as claimed in claim 29, characterized in that, The configuration information may include at least one or more of the following: an indication of the association between the PTRS and the demodulation reference signal DMRS port, or DMRS port configuration information.

31. The communication device as claimed in claim 29, characterized in that, The processing module is also used for: Under the single TRP transmission scheduling, the actual number of PTRS transmission ports is determined to be 1 or 2. The actual number of PTRS transmission ports is determined by the number of PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the Probe Reference Signal Resource Indicator (SRI) domain, wherein the one or more SRS resources are included in the SRS resource set associated with the SRI domain. Identify one or more SRS resources in the associated SRS resource set that correspond to the same PTRS port index value and share the same PTRS port.

32. The communication device as claimed in claim 29, characterized in that, The processing module is also used for: In SDM multiplexing mode with multi-TRP transmission, the actual number of PTRS transmission ports is determined to be 2. The PTRS port index values ​​corresponding to one or more first SRS resources configured or indicated by the first SRI field are all defaulted to the predefined first index value. The PTRS port index values ​​corresponding to one or more second SRS resources configured or indicated by the second SRI field are all defaulted to the predefined second index value. The one or more first SRS resources are included in the first SRS resource set associated with the first SRI field, and the one or more second SRS resources are included in the second SRS resource set associated with the second SRI field. The DMRS ports corresponding to one or more SRS resources in the first SRS resource set corresponding to the first index value are determined, and the PTRS ports corresponding to the first index value are shared. The DMRS ports corresponding to one or more SRS resources in the second SRS resource set corresponding to the second index value are also shared.

33. The communication device according to any one of claims 29-32, characterized in that, Different SRS resource sets are associated with at least one of the following: the timing of PUSCH transmission on the antenna panel, TRP, or beam information.

34. The communication device according to any one of claims 29-32, characterized in that, The processing module is further configured to: Based on the association between the PTRS and the demodulation reference signal DMRS port, the actual DMRS port associated with each PTRS is determined.

35. A communication device, characterized in that, include: The processing module is used to determine the uplink PTRS transmission parameters of the user equipment when the user equipment is configured to transmit STxMP simultaneously via uplink multi-panel, and the scheduled physical uplink shared channel PUSCH is based on non-codebook spatial multiplexing SDM transmission. The PTRS transmission parameters include the number of actual PTRS transmission ports and the DMRS port actually associated with each PTRS port, with different PTRS ports associated with different DMRS ports. The transceiver module is used to receive PTRS transmitted by the user equipment based on the uplink PTRS transmission parameters; The configuration information includes the maximum number of PTRS ports, which is configured to be two. One of the maximum PTRS ports is used for single TRP transmission, and the other is used for multi-TRP transmission under STxMP. The multi-TRP transmission under STxMP includes at least SFN transmission and SDM transmission.

36. The communication device as claimed in claim 35, characterized in that, The configuration information may include at least one or more of the following: an indication of the association between the PTRS and the demodulation reference signal DMRS port, or DMRS port configuration information.

37. The communication device as claimed in claim 35, characterized in that, The processing module is further configured to: Under the single TRP transmission scheduling, the actual number of the PTRS transmission ports is determined to be 1 or 2. The actual number of the PTRS transmission ports is determined by the number of PTRS port index values ​​corresponding to one or more SRS resources configured or indicated by the Probe Reference Signal Resource Indicator (SRI) domain, wherein the one or more SRS resources are included in the SRS resource set associated with the SRI domain. Identify one or more SRS resources in the associated SRS resource set that correspond to the same PTRS port index value and share the same PTRS port.

38. The communication device according to claim 35, characterized in that, The processing module is further configured to: In SDM multiplexing mode with multi-TRP transmission, the actual number of PTRS transmission ports is determined to be 2. The PTRS port index values ​​corresponding to one or more first SRS resources configured or indicated by the first SRI field are all defaulted to the predefined first index value. The PTRS port index values ​​corresponding to one or more second SRS resources configured or indicated by the second SRI field are all defaulted to the predefined second index value. The one or more first SRS resources are included in the first SRS resource set associated with the first SRI field, and the one or more second SRS resources are included in the second SRS resource set associated with the second SRI field. The DMRS ports corresponding to one or more SRS resources in the first SRS resource set corresponding to the first index value are determined, and the PTRS ports corresponding to the first index value are shared. The DMRS ports corresponding to one or more SRS resources in the second SRS resource set corresponding to the second index value are also shared.

39. The communication device according to any one of claims 35-38, characterized in that, Different SRS resource sets are associated with at least one of the following: the timing of PUSCH transmission on the antenna panel, TRP, or beam information.

40. The communication device according to any one of claims 35-38, characterized in that, The processing module is further configured to: Based on the association between the PTRS and the demodulation reference signal DMRS port, the actual DMRS port associated with each PTRS is determined.

41. A communication device, characterized in that, The device includes a processor and a memory, the memory storing computer instructions, the processor executing the computer instructions stored in the memory to cause the device to perform the method as claimed in any one of claims 1 to 14, or to perform the method as claimed in any one of claims 15 to 28.

42. A communication system, characterized in that, The communication system includes user equipment and network equipment; The user equipment is used to perform the method as described in any one of claims 1-14, and the network device is used to perform the method as described in any one of claims 15 to 28.

43. A computer-readable storage medium for storing instructions that, when executed, cause the method of any one of claims 1 to 14 to be implemented, or cause the method of any one of claims 15 to 28 to be implemented.

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