Method, device and storage medium for indicating uplink phase tracking reference signal port

Abstract

The present disclosure relates to a method, device, and storage medium for indicating an uplink PT-RS port. A method for indicating an uplink PT-RS port, applied to a network device, comprises: in response to determining that a terminal simultaneously transmits STxMPs using multiple antenna panels of a physical uplink shared channel (PUSCH) based on a single downlink control information (S-DCI) scheduling method, configuring the terminal to transmit a PT-RS reference signal; and sending indication information to the terminal, the indication information being used to indicate the association between the PT-RS port and the DMRS port when the terminal transmits the PT-RS reference signal. The present disclosure enhances the association between the PT-RS port and the DMRS port in STxMP transmission.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a method, device, and storage medium for indicating an uplink phase tracking reference signal (PT-RS) port. Background Art

[0002] In the multi-transmission and reception point (multi-TRP) scenario, uplink enhancement supports repeated transmission of the Physical Uplink Shared Channel (PUSCH) / Physical Uplink Control Channel (PUCCH) by using time division multiplexing (TDM) to transmit uplink channels to different transmission and reception points (TRP) in different uplink beam directions. Currently, the bottleneck of the communication system is still the uplink transmission rate and coverage. Therefore, the system enhancement direction of the R18 standard mainly considers the use of multi-antenna panel terminals for simultaneous uplink transmission in the Multi-TRP (also known as mTRP or M-TRP) scenario to increase the uplink rate and further improve the transmission reliability.

[0003] In NR, to enhance signal coverage and improve signal quality, the PT-RS is configured by the network to the terminal as a UE-specific reference signal. PT-RS is used to track the phase noise introduced by the local oscillator in the network equipment and the terminal and is used to estimate the common phase error (CPE). PT-RS can be regarded as an extension of the demodulation reference signal (DMRS) and has a close relationship with it, such as using the same precoding, port correlation, orthogonal sequence generation, and quasi co-location (QCL) relationship.

[0004] In uplink enhancement, in order to support the simultaneous transmission via multi-panel (STxMP) scheme based on single-DCI (single downlink control information, S-DCI, also known as single DCI), it is necessary to consider different association mapping indication schemes between PT-RS and DMRS under different transmission multiplexing schemes, thereby supporting accurate estimation of CPE in the case of terminal multi-panel. Summary of the Invention

[0005] To overcome the problems existing in the related art, the present disclosure provides a method, device and storage medium for indicating an uplink PT-RS port.

[0006] According to a first aspect of an embodiment of the present disclosure, a method for indicating an uplink PT-RS port is provided, which is applied to a network device, and the method includes:

[0007] In response to the terminal determining that multiple antenna panels Panel for the physical uplink shared channel PUSCH based on the single downlink control information S-DCI scheduling method simultaneously transmit STxMP, the terminal is configured to send a PT-RS reference signal; and indication information is sent to the terminal, wherein the indication information is used to indicate the association relationship between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal.

[0008] In one implementation, the indication information includes a PT-RS-DMRS association relationship indication field, and different indication modes of the PT-RS-DMRS association relationship indication field are used to indicate different association relationships between the PT-RS port and the DMRS port.

[0009] In one embodiment, the manner of indicating the association relationship between the PT-RS port and the DMRS port is determined based on at least one of the following information:

[0010] The maximum number of PT-RS ports; the transmission mode adopted by the terminal for uplink transmission; the actual number of transmission layers of the terminal.

[0011] In one implementation, in response to the maximum number of PT-RS ports being 1, a manner of indicating the association relationship between the PT-RS port and the DMRS port is determined based on the actual number of transmission layers.

[0012] In one embodiment, in response to the actual number of transmission layers being greater than 1, the PT-RS-DMRS association relationship indication field is indicated by 2 bits, and the number of DMRS ports is the total number of all DMRS ports allocated to the terminal by the S-DCI.

[0013] In one implementation, in response to the maximum number of PT-RS ports being 2, a method for indicating the association relationship between the PT-RS port and the DMRS port is determined based on the transmission mode and the actual number of transmission layers.

[0014] In one implementation, in response to the transmission mode being a space division multiplexing (SDM) transmission mode, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field is indicated by 0 bits.

[0015] In one embodiment, in response to the transmission mode being a space division multiplexing SDM transmission mode, the actual number of transmission layers is greater than 2, and the indication method of the PT-RS-DMRS association relationship indication field is determined based on the combination of the number of transmission layers supported by the terminal for PUSCH transmission corresponding to different TRP / Panel / TCI / TO.

[0016] In one embodiment, in response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, including a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and not supporting a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1, the PT-RS-DMRS association relationship indication field is indicated by 2 bits, and different bits are used to indicate different PT-RS ports of different antenna panels.

[0017] In one embodiment, in response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, the combinations include a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and supports a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1. The PT-RS-DMRS association relationship indication field indicates different PT-RS ports in the case of the combination of transmission layer number 2 and transmission layer number 2 through different bits in 2 bits.

[0018] In one embodiment, in response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, including a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and supporting a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1, the PT-RS-DMRS association relationship indication field indicates the association relationship between the PT-RS port and the DMRS port on the antenna panel with a transmission layer number greater than 1 through 2 bits.

[0019] In one embodiment, in response to the transmission mode being a frequency division multiplexing (FDM) transmission mode or a single frequency network (SFN) transmission mode, the actual number of transmission layers is greater than 1, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through different bits.

[0020] In one implementation, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels using 2 bits.

[0021] In one implementation, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through 4 bits.

[0022] In one embodiment, the high-order bit is used to indicate the first PT-RS port of the first antenna panel among the two DMRS antenna ports that share the first PT-RS port in front or behind, and the low-order bit is used to indicate the second PT-RS port of the second antenna panel among the two DMRS antenna ports that share the second PT-RS port in front or behind.

[0023] In one embodiment, 2 bits are used to indicate the association relationship between the PT-RS port corresponding to the antenna panel with an actual transmission layer number of 3 and the 3 DMRS ports corresponding to the antenna panel; the number of PT-RS port indication bits corresponding to the antenna panel with an actual transmission layer number of 1 is 0.

[0024] In one embodiment, the high-order bit is used to indicate the first PT-RS port of the first antenna panel among the two DMRS antenna ports that share the first PT-RS port in front or behind, and the low-order bit is used to indicate the second PT-RS port of the second antenna panel among the two DMRS antenna ports that share the second PT-RS port in front or behind.

[0025] According to a second aspect of an embodiment of the present disclosure, a method for indicating an uplink PT-RS port is provided, which is applied to a terminal, and the method includes:

[0026] Obtain indication information sent by the network device, where the indication information is used to indicate the association relationship between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal; multiple antenna panels of the physical uplink shared channel PUSCH are simultaneously transmitted STxMP based on the single downlink control information S-DCI scheduling method, and the PT-RS reference signal is sent based on the association relationship between the PT-RS port and the DMRS port indicated by the indication information.

[0027] In one implementation, the indication information includes a PT-RS-DMRS association relationship indication field, and different indication modes of the PT-RS-DMRS association relationship indication field are used to indicate different association relationships between the PT-RS port and the DMRS port.

[0028] In one embodiment, the manner of indicating the association relationship between the PT-RS port and the DMRS port is determined based on at least one of the following information:

[0029] The maximum number of PT-RS ports; the transmission mode adopted by the terminal for uplink transmission; the actual number of transmission layers of the terminal.

[0030] In one implementation, in response to the maximum number of PT-RS ports being 1, a manner of indicating the association relationship between the PT-RS port and the DMRS port is determined based on the actual number of transmission layers.

[0031] In one embodiment, in response to the actual number of transmission layers being greater than 1, the PT-RS-DMRS association relationship indication field is indicated by 2 bits, and the number of DMRS ports is the total number of all DMRS ports allocated to the terminal by the S-DCI.

[0032] In one implementation, in response to the maximum number of PT-RS ports being 2, a method for indicating the association relationship between the PT-RS port and the DMRS port is determined based on the transmission mode and the actual number of transmission layers.

[0033] In one implementation, in response to the transmission mode being a space division multiplexing (SDM) transmission mode, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field is indicated by 0 bits.

[0034] In one embodiment, in response to the transmission mode being a space division multiplexing SDM transmission mode, the actual number of transmission layers is greater than 2, and the indication method of the PT-RS-DMRS association relationship indication field is determined based on the combination of the number of transmission layers supported by the terminal for PUSCH transmission corresponding to different TRP / Panel / TCI / TO.

[0035] In one embodiment, in response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, including a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and not supporting a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1, the PT-RS-DMRS association relationship indication field is indicated by 2 bits, and different bits are used to indicate different PT-RS ports of different antenna panels.

[0036] In one embodiment, in response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, the combinations include a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and supports a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1. The PT-RS-DMRS association relationship indication field indicates different PT-RS ports in the case of the combination of transmission layer number 2 and transmission layer number 2 through different bits in 2 bits.

[0037] In one embodiment, in response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, including a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and supporting a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1, the PT-RS-DMRS association relationship indication field indicates the association relationship between the PT-RS port and the DMRS port on the antenna panel with a transmission layer number greater than 1 through 2 bits.

[0038] In one embodiment, in response to the transmission mode being a frequency division multiplexing (FDM) transmission mode or a single frequency network (SFN) transmission mode, the actual number of transmission layers is greater than 1, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through different bits.

[0039] In one implementation, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels using 2 bits.

[0040] In one implementation, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through 4 bits.

[0041] In one embodiment, the high-order bit is used to indicate the first PT-RS port of the first antenna panel among the two DMRS antenna ports that share the first PT-RS port in front or behind, and the low-order bit is used to indicate the second PT-RS port of the second antenna panel among the two DMRS antenna ports that share the second PT-RS port in front or behind.

[0042] In one embodiment, 2 bits are used to indicate an association relationship between a PT-RS port corresponding to an antenna panel having an actual number of transmission layers of 3 and three corresponding DMRS ports on the antenna panel;

[0043] The number of PT-RS port indication bits corresponding to the antenna panel with an actual transmission layer number of 1 is 0.

[0044] In one embodiment, the high-order bit is used to indicate the first PT-RS port of the first antenna panel among the two DMRS antenna ports that share the first PT-RS port in front or behind, and the low-order bit is used to indicate the second PT-RS port of the second antenna panel among the two DMRS antenna ports that share the second PT-RS port in front or behind.

[0045] According to a third aspect of an embodiment of the present disclosure, a device for indicating an uplink PT-RS port is provided, including:

[0046] The processing module is configured to configure the terminal to send a PT-RS reference signal when it is determined that multiple antenna panels Panel of the physical uplink shared channel PUSCH of the terminal simultaneously transmit STxMP based on the single downlink control information S-DCI scheduling method; the sending module is configured to send indication information to the terminal, and the indication information is used to indicate the association relationship between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal.

[0047] In one implementation, the indication information includes a PT-RS-DMRS association relationship indication field, and different indication modes of the PT-RS-DMRS association relationship indication field are used to indicate different association relationships between the PT-RS port and the DMRS port.

[0048] In one embodiment, the manner of indicating the association relationship between the PT-RS port and the DMRS port is determined based on at least one of the following information:

[0049] The maximum number of PT-RS ports; the transmission mode adopted by the terminal for uplink transmission; the actual number of transmission layers of the terminal.

[0050] In one implementation, in response to the maximum number of PT-RS ports being 1, a manner of indicating the association relationship between the PT-RS port and the DMRS port is determined based on the actual number of transmission layers.

[0051] In one embodiment, in response to the actual number of transmission layers being greater than 1, the PT-RS-DMRS association relationship indication field is indicated by 2 bits, and the number of DMRS ports is the total number of all DMRS ports allocated to the terminal by the S-DCI.

[0052] In one implementation, in response to the maximum number of PT-RS ports being 2, a method for indicating the association relationship between the PT-RS port and the DMRS port is determined based on the transmission mode and the actual number of transmission layers.

[0053] In one implementation, in response to the transmission mode being a space division multiplexing (SDM) transmission mode, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field is indicated by 0 bits.

[0054] In one embodiment, in response to the transmission mode being a space division multiplexing SDM transmission mode, the actual number of transmission layers is greater than 2, and the indication method of the PT-RS-DMRS association relationship indication field is determined based on the combination of the number of transmission layers supported by the terminal for PUSCH transmission corresponding to different TRP / Panel / TCI / TO.

[0055] In one embodiment, in response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, including a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and not supporting a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1, the PT-RS-DMRS association relationship indication field is indicated by 2 bits, and different bits are used to indicate different PT-RS ports of different antenna panels.

[0056] In one embodiment, in response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, the combinations include a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and supports a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1. The PT-RS-DMRS association relationship indication field indicates different PT-RS ports in the case of the combination of transmission layer number 2 and transmission layer number 2 through different bits in 2 bits.

[0057] In one embodiment, in response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, including a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and supporting a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1, the PT-RS-DMRS association relationship indication field indicates the association relationship between the PT-RS port and the DMRS port on the antenna panel with a transmission layer number greater than 1 through 2 bits.

[0058] In one embodiment, in response to the transmission mode being a frequency division multiplexing (FDM) transmission mode or a single frequency network (SFN) transmission mode, the actual number of transmission layers is greater than 1, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through different bits.

[0059] In one implementation, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels using 2 bits.

[0060] In one implementation, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through 4 bits.

[0061] In one embodiment, the high-order bit is used to indicate the first PT-RS port of the first antenna panel among the two DMRS antenna ports that share the first PT-RS port in front or behind, and the low-order bit is used to indicate the second PT-RS port of the second antenna panel among the two DMRS antenna ports that share the second PT-RS port in front or behind.

[0062] In one embodiment, 2 bits are used to indicate the association relationship between the PT-RS port corresponding to the antenna panel with an actual transmission layer number of 3 and the 3 DMRS ports corresponding to the antenna panel; the number of PT-RS port indication bits corresponding to the antenna panel with an actual transmission layer number of 1 is 0.

[0063] In one embodiment, the high-order bit is used to indicate the first PT-RS port of the first antenna panel among the two DMRS antenna ports that share the first PT-RS port in front or behind, and the low-order bit is used to indicate the second PT-RS port of the second antenna panel among the two DMRS antenna ports that share the second PT-RS port in front or behind.

[0064] According to a fourth aspect of an embodiment of the present disclosure, a device for indicating an uplink PT-RS port is provided, including:

[0065] An acquisition module is configured to acquire indication information sent by a network device, wherein the indication information is used to indicate the association relationship between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal; a sending module is configured to simultaneously transmit STxMP on multiple antenna panels of the physical uplink shared channel PUSCH based on a single downlink control information S-DCI scheduling method, and send the PT-RS reference signal based on the association relationship between the PT-RS port and the DMRS port indicated by the indication information.

[0066] In one implementation, the indication information includes a PT-RS-DMRS association relationship indication field, and different indication modes of the PT-RS-DMRS association relationship indication field are used to indicate different association relationships between the PT-RS port and the DMRS port.

[0067] In one embodiment, the manner of indicating the association relationship between the PT-RS port and the DMRS port is determined based on at least one of the following information:

[0068] The maximum number of PT-RS ports; the transmission mode adopted by the terminal for uplink transmission; the actual number of transmission layers of the terminal.

[0069] In one implementation, in response to the maximum number of PT-RS ports being 1, a manner of indicating the association relationship between the PT-RS port and the DMRS port is determined based on the actual number of transmission layers.

[0070] In one embodiment, in response to the actual number of transmission layers being greater than 1, the PT-RS-DMRS association relationship indication field is indicated by 2 bits, and the number of DMRS ports is the total number of all DMRS ports allocated to the terminal by the S-DCI.

[0071] In one implementation, in response to the maximum number of PT-RS ports being 2, a method for indicating the association relationship between the PT-RS port and the DMRS port is determined based on the transmission mode and the actual number of transmission layers.

[0072] In one implementation, in response to the transmission mode being a space division multiplexing (SDM) transmission mode, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field is indicated by 0 bits.

[0073] In one embodiment, in response to the transmission mode being a space division multiplexing SDM transmission mode, the actual number of transmission layers is greater than 2, and the indication method of the PT-RS-DMRS association relationship indication field is determined based on the combination of the number of transmission layers supported by the terminal for PUSCH transmission corresponding to different TRP / Panel / TCI / TO.

[0074] In one embodiment, in response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, including a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and not supporting a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1, the PT-RS-DMRS association relationship indication field is indicated by 2 bits, and different bits are used to indicate different PT-RS ports of different antenna panels.

[0075] In one embodiment, in response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, the combinations include a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and supports a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1. The PT-RS-DMRS association relationship indication field indicates different PT-RS ports in the case of the combination of transmission layer number 2 and transmission layer number 2 through different bits in 2 bits.

[0076] In one embodiment, in response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, including a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and supporting a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1, the PT-RS-DMRS association relationship indication field indicates the association relationship between the PT-RS port and the DMRS port on the antenna panel with a transmission layer number greater than 1 through 2 bits.

[0077] In one embodiment, in response to the transmission mode being a frequency division multiplexing (FDM) transmission mode or a single frequency network (SFN) transmission mode, the actual number of transmission layers is greater than 1, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through different bits.

[0078] In one implementation, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels using 2 bits.

[0079] In one implementation, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through 4 bits.

[0080] In one embodiment, the high-order bit is used to indicate the first PT-RS port of the first antenna panel among the two DMRS antenna ports that share the first PT-RS port in front or behind, and the low-order bit is used to indicate the second PT-RS port of the second antenna panel among the two DMRS antenna ports that share the second PT-RS port in front or behind.

[0081] In one embodiment, 2 bits are used to indicate an association relationship between a PT-RS port corresponding to an antenna panel having an actual number of transmission layers of 3 and three corresponding DMRS ports on the antenna panel;

[0082] The number of PT-RS port indication bits corresponding to the antenna panel with an actual transmission layer number of 1 is 0.

[0083] In one embodiment, the high-order bit is used to indicate the first PT-RS port of the first antenna panel among the two DMRS antenna ports that share the first PT-RS port in front or behind, and the low-order bit is used to indicate the second PT-RS port of the second antenna panel among the two DMRS antenna ports that share the second PT-RS port in front or behind.

[0084] According to a fifth aspect of an embodiment of the present disclosure, a device for indicating an uplink PT-RS port is provided, including:

[0085] processor;

[0086] a memory for storing processor-executable instructions;

[0087] The processor is configured to: execute the method described in the first aspect or any one of the embodiments of the first aspect.

[0088] According to a sixth aspect of an embodiment of the present disclosure, a device for indicating an uplink PT-RS port is provided, including:

[0089] processor;

[0090] a memory for storing processor-executable instructions;

[0091] The processor is configured to: execute the method described in the second aspect or any one of the embodiments of the second aspect.

[0092] According to the seventh aspect of the embodiment of the present disclosure, a storage medium is provided, in which instructions are stored. When the instructions in the storage medium are executed by a processor of a network device, the network device is enabled to execute the method described in the first aspect or any one of the embodiments of the first aspect.

[0093] According to an eighth aspect of an embodiment of the present disclosure, a storage medium is provided, in which instructions are stored. When the instructions in the storage medium are executed by a processor of a network device, the network device is enabled to execute the method described in the second aspect or any one of the embodiments of the second aspect.

[0094] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: when a terminal performs STxMP transmission of a PUSCH based on an S-DCI scheduling method, a network device configures the terminal to send a PT-RS reference signal and sends indication information to the terminal. The indication information is used to indicate the association relationship between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal, thereby enhancing the association relationship between the PT-RS port and the DMRS port in STxMP transmission. Different association mapping indication schemes between PT-RS and DMRS are considered under different transmission multiplexing schemes, thereby supporting accurate estimation of CPE in the case of multiple panels of the terminal.

[0095] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0096] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0097] Figure 1 The figure is a schematic diagram of a wireless communication system according to an exemplary embodiment.

[0098] Figure 2 This is a logical diagram of multi-panel transmission implementation based on single DCI (S-DCI).

[0099] Figure 3 A schematic diagram of a codeword-to-layer mapping scheme is shown.

[0100] Figures 4A to 4D Schematic diagrams showing the design of two types of front-load DMRS configurations are shown.

[0101] Figure 5 The present invention is a flowchart showing a method for indicating an uplink PT-RS port according to an exemplary embodiment.

[0102] Figure 6 The present invention is a flow chart showing a method for determining an indication manner of an association relationship between a PT-RS port and a DMRS port according to an exemplary embodiment.

[0103] Figure 7 The present invention is a flow chart showing a method for determining an indication manner of an association relationship between a PT-RS port and a DMRS port according to an exemplary embodiment.

[0104] Figure 8 The present invention is a flowchart showing a method for indicating an uplink PT-RS port according to an exemplary embodiment.

[0105] Figure 9 The present invention is a block diagram of an uplink PT-RS port indication device according to an exemplary embodiment.

[0106] Figure 10 The present invention is a block diagram of an uplink PT-RS port indication device according to an exemplary embodiment.

[0107] Figure 11 It is a block diagram showing a device for uplink PT-RS port indication according to an exemplary embodiment.

[0108] Figure 12 It is a block diagram showing a device for uplink PT-RS port indication according to an exemplary embodiment. DETAILED DESCRIPTION

[0109] Exemplary embodiments are described in detail herein, with examples illustrated in the accompanying drawings. When the following description refers to the drawings, identical numerals in different drawings represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present disclosure.

[0110] The method for indicating an uplink PT-RS port provided by the embodiment of the present disclosure can be applied to Figure 1 In the wireless communication system shown in FIG. Figure 1 As shown, the wireless communication system includes a network device and a terminal. The terminal connects to the network device via radio resources and performs data transmission. Data transmission between the network device and the terminal is based on beamforming. PUSCH uplink transmission enhancement can be performed between the network device and the terminal based on Multi-TRP / Multi-panel.

[0111] It is understandable that Figure 1 The wireless communication system shown is only for schematic illustration. The wireless communication system may also include other network devices, such as core network devices, wireless relay devices, and wireless backhaul devices. Figure 1 The embodiment of the present disclosure does not limit the number of network devices and terminals included in the wireless communication system.

[0112] It can be further understood that the wireless communication system of the embodiment of the present disclosure is a network that provides wireless communication functions. The wireless communication system can adopt different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), and carrier sense multiple access with collision avoidance. According to factors such as the capacity, rate, and latency of different networks, the network can be divided into 2G (English: generation) network, 3G network, 4G network or future evolution network, such as 5G network. 5G network can also be called new radio (NR). For the convenience of description, the present disclosure sometimes refers to the wireless communication network as simply a network.

[0113] Furthermore, the network devices involved in the present disclosure may also be referred to as wireless access network devices. The wireless access network devices may be: base stations, evolved node Bs (base stations), home base stations, access points (APs) in wireless fidelity (WIFI) systems, wireless relay nodes, wireless backhaul nodes, transmission points (TPs) or transmission and reception points (TRPs), etc. They may also be gNBs in NR systems, or they may be components or part of devices that constitute base stations. It should be understood that in the embodiments of the present disclosure, the specific technologies and specific device forms used by the network devices are not limited. In the present disclosure, the network devices may provide communication coverage for a specific geographical area and may communicate with terminals located within the coverage area (cell). In addition, when it is a vehicle-to-everything (V2X) communication system, the network devices may also be vehicle-mounted devices.

[0114] Furthermore, the terminal involved in the present disclosure may also be referred to as a terminal device, user equipment (UE), mobile station (MS), mobile terminal (MT), etc., which is a device that provides voice and / or data connectivity to users. For example, the terminal can be a handheld device with wireless connection function, a vehicle-mounted device, etc. At present, some examples of terminals are: smart phones (Mobile Phones), customer premises equipment (Customer Premise Equipment, CPE), pocket computers (Pocket Personal Computers, PPCs), handheld computers, personal digital assistants (Personal Digital Assistants, PDAs), laptops, tablet computers, wearable devices, or vehicle-mounted devices, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device can also be a vehicle-mounted device. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal.

[0115] In the multi-transmission and reception point (multi-TRP) scenario, uplink enhancement supports repeated transmission of the Physical Uplink Shared Channel (PUSCH) / Physical Uplink Control Channel (PUCCH) by using time division multiplexing (TDM) to transmit uplink channels to different transmission and reception points (TRP) in different uplink beam directions. Currently, the bottleneck of the communication system is still the uplink transmission rate and coverage. Therefore, the system enhancement direction of the R18 standard mainly considers the use of multi-antenna panel terminals for simultaneous uplink transmission in the Multi-TRP (also known as mTRP or M-TRP) scenario to increase the uplink rate and further improve the transmission reliability.

[0116] In NR, to enhance signal coverage and improve signal quality, the PT-RS is configured by the network to the terminal as a UE-specific reference signal. PT-RS is used to track the phase noise introduced by the local oscillator in the network equipment and the terminal and is used to estimate the common phase error (CPE). PT-RS can be regarded as an extension of the demodulation reference signal (DMRS) and has a close relationship with it, such as using the same precoding, port correlation, orthogonal sequence generation, and quasi co-location (QCL) relationship.

[0117] In uplink enhancement, in order to support the simultaneous transmission via multi-panel (STxMP) scheme based on single-DCI (single downlink control information, S-DCI, also known as single DCI), it is necessary to consider different association mapping indication schemes between PT-RS and DMRS under different transmission multiplexing schemes, thereby supporting accurate estimation of CPE in the case of terminal multi-panel.

[0118] In related technologies, when a network device (such as a base station) has multiple TRPs, it can use M-TRP / multi-panel to provide services to terminals, and introduce CoMP (Coordinate MultiPoint) technology to enable network devices to provide more balanced service quality within the service area. In one implementation, there is a correspondence between Panel, TRP, TCI (Transmission Configuration Indication) and TO (transmission occasion), so this disclosure uses TRP / Panel / TCI / TO, or multiple TRP / Panel / TCI / TO to express it. In all embodiments of the present disclosure, " / " means "or".

[0119] Unlike single-point transmission such as a single TRP or panel, multi-point coordinated transmission CoMP refers to multiple TRPs (Multi-TRP, mTRP) / panels providing data services to one user. Among them, the antenna array of each TRP can be divided into several relatively independent antenna panels, so the shape and number of ports of the entire array can be flexibly adjusted according to the deployment scenario and business needs. The antenna panels or TRPs can also be connected by optical fiber for more flexible distributed deployment. In the millimeter wave band, as the wavelength decreases, the blocking effect caused by obstacles such as human bodies or vehicles will become more significant. In this case, from the perspective of ensuring the robustness of the link connection, the collaboration between multiple TRPs or panels can be used to transmit / receive from multiple beams at multiple angles, thereby reducing the adverse effects of the blocking effect.

[0120] The multiple sites involved in CoMP transmission may correspond to geographically distinct sites or sectors with different antenna panel orientations. For example, when a terminal receives data from different sites, the spatial disparity between the sites can lead to differences in the large-scale channel parameters of the receive links from different sites, such as Doppler offset and delay spread. These large-scale channel parameters directly impact the adjustment and optimization of filter coefficients during channel estimation. Therefore, different channel estimation filter parameters should be used for signals from different sites to adapt to the corresponding channel propagation characteristics.

[0121] Therefore, although the differences in spatial position or angle between sites are transparent to the UE and the CoMP operation itself, the impact of these spatial differences on the large-scale channel parameters is an important factor that the UE needs to consider when performing channel estimation and reception detection. Therefore, quasi-co-location (QCL) is introduced in related technologies. QCL means that the large-scale parameters of the channel experienced by the symbols on one antenna port can be inferred from the channel experienced by the symbols on another antenna port. The large-scale parameters can include delay spread, average delay, Doppler spread, Doppler shift, average gain, and spatial reception parameters.

[0122] When two antenna ports are QCL in the context of certain large-scale parameters, these parameters are identical. In other words, as long as these parameters are consistent, the terminal can assume that the two ports are emitting from the same location (quasi-co-located), regardless of their physical locations or corresponding antenna panel orientations.

[0123] For some typical application scenarios, taking into account the possible QCL relationships between various reference signals and from the perspective of simplifying signaling, NR divides several large-scale channel parameters into the following four types to facilitate system configuration / indication based on different scenarios:

[0124] QCL-Type A: {Doppler shift, Doppler spread, average delay, delay spread}

[0125] -Except for the spatial reception parameter, all other large-scale parameters are the same.

[0126] - For frequency bands below 6 GHz, spatial reception parameters may not be required.

[0127] QCL-Type B: {Doppler shift, Doppler spread}

[0128] - 6GHz only

[0129] QCL-Type C: {Doppler frequency shift, average delay}

[0130] QCL-TypeD: {Spatial reception parameters}

[0131] As mentioned above, since this parameter is mainly applicable to the frequency band above 6 GHz, it is considered as a separate QCL type.

[0132] In the Multi-TRP scenario, the R17 standard supports uplink enhancement for repeated transmission of PUSCH / PUCCH channels, which can be transmitted to different TRPs in different uplink beam directions by using time-division multiplexing (TDM) multiplexing.

[0133] At present, the bottleneck of the communication system is still the rate and coverage of uplink transmission. Therefore, the system enhancement direction of the R18 standard is mainly to consider that in the Multi-TRP scenario, the terminal uses multiple TRP / Panel / TCI / TO for simultaneous uplink transmission (STxMP) to increase the uplink rate, and further improve the reliability of transmission, and perform PUSCH enhancement based on the simultaneous transmission of multiple TRP / Panel / TCI / TO of the terminal. Among them, the PUSCH enhancement based on Multi-TRP can be scheduled based on a downlink control information (DCI) carried by a physical downlink control channel (Physical Downlink Control Channel, PDCCH), such as single downlink control signaling (S-DCI) scheduling multiple TRP / Panel / TCI / TO transmissions. It is also possible to consider scheduling different DCIs carried by different PDCCHs separately. Figure 2 This is a logical diagram of the multi-panel transmission implementation based on single DCI (S-DCI). Figure 2 As shown, the terminal (UE) transmits PUSCH1 and PUSCH2 through panel1 and panel2 based on transport layer (Layer) 1 and Layer 2, facing TRP1 and TRP2 respectively.

[0134] Among them, terminal multi-panel implementations generally configure multiple physical panels, and the capabilities of different panels may also vary. For example, they may have different maximum numbers of Sounding Reference Signal (SRS) ports and the maximum number of data transmission layers they support. For example, one panel supports a maximum of 2 layers of transmission, while another panel supports a maximum of 4 layers of transmission. The network device's scheduler will determine whether the terminal is currently suitable for simultaneous uplink transmission of multiple panels. If the terminal is currently suitable for simultaneous uplink transmission of multiple panels and is scheduled at the same time, the network device will directly or indirectly indicate the relevant transmission parameters, including the terminal's specific beam indication information, the number of data layers used for transmission, the allocation of DMRS ports used, and precoding indication information.

[0135] The method provided by the embodiment of the present disclosure is applicable to the DMRS port indication problem under S-DCI scheduling, that is, how to determine which DMRS ports are used to send PUSCH on different panels.

[0136] The current protocol supports a maximum of 4 uplink transmission layers, corresponding to the transmission of one codeword. Therefore, in multi-panel enhancement, another issue is how to support 2 codewords in the uplink to achieve flexible mapping. Among them, in the related art, in the uplink or downlink layer mapping scheme, the case where the number of data layers is 2-4 corresponds to the transmission of 1 codeword (codeWord, CW). However, this configuration makes it difficult for the same MCS to adapt to the channel conditions of different layers. Therefore, when the channel performance between layers varies greatly, performance loss will occur. Therefore, it is considered to apply 2 CWs for scheduling and transmission for data of 2-4 layers or only for 4 layers. Figure 3 A schematic diagram of a codeword to layer mapping scheme is shown below. Figure 3 As shown in the figure, in STxMP transmission under S-DCI scheduling, codeword 0 is mapped to layer 0 (CW#0 in Layer 0) and codeword 1 is mapped to layer 1 (CW#1 in Layer 1) for uplink transmission to TRP0 and TRP1. This approach allows network devices to fully adapt scheduling to inter-layer channel conditions. For example, for Layer 3 transmission, if there is significant difference between channel layers, two CWs can be used for scheduling: one CW transmits Layer 1 data and the other transmits Layer 2 data. This also facilitates data retransmission scheduling and helps improve system throughput. Since transmission below Layer 4 is predominant in the system, this also benefits overall performance optimization.

[0137] Among them, for the uplink synchronous transmission of multiple panels, the collaborative transmission scheduling of one TB of PUSCH based on S-DCI may support one or more transmission schemes including space division multiplexing (SDM), frequency division multiplexing (FDM) and single frequency network (SFN).

[0138] Among them, the SDM spatial division multiplexing scheme is mainly that a transport block (TB) of PUSCH sends different data layers on the same time-frequency resources to two different TRPs through the corresponding DMRS ports or port combinations allocated on different panels. Different TRPs / Panels / TCIs / TOs are associated with different beams / TCI states (i.e., beam indications).

[0139] SDM space division multiplexing schemes include SDM-A and SDM-B.

[0140] Among them, SDM-A: different parts of a TB of PUSCH are sent to two different TRPs on the same time-frequency resources through their corresponding DMRS ports or port combinations allocated on different panels. Different TRP / Panel / TCI / TO are associated with different TCIstates, i.e. beams.

[0141] Among them, SDM-B: The repetition of the same TB corresponding to different RV versions of PUSCH is sent on the same time-frequency resources to two different TRPs through the corresponding DMRS ports or port combinations allocated on different Panels. Different TRP / Panel / TCI / TO are associated with different TCIstates, i.e. beams.

[0142] For the FDM frequency division multiplexing scheme, a TB of PUSCH is sent on non-overlapping frequency domain resources on the same time domain resources to two different TRPs through the same DMRS port or port combination allocated on different panels. Different TRPs / Panels / TCIs / TOs are associated with different TCIstates, i.e. beams.

[0143] There are two possible FDM options: FDM-A and FDM-B:

[0144] FDM-A: Different parts of a TB of PUSCH are sent on non-overlapping frequency domain resources on the same time domain resources to two different TRPs through the same DMRS port or port combination allocated on different panels. Different TRPs / Panels / TCIs / TOs are associated with different TCIstates, i.e. beams.

[0145] FDM-B: The repetition of the same TB corresponding to different RV versions of PUSCH is sent on non-overlapping frequency domain resources on the same time domain resources to two different TRPs through the same DMRS port or port combination allocated on different panels. Different TRP / Panel / TCI / TO are associated with different TCIstates, i.e. beams.

[0146] For the SFN solution, a TB of PUSCH sends the same data layer on the same time-frequency resources to two different TRPs through the same DMRS port or port combination allocated on different panels. Different panels / TRPs / TOs are associated with different TCIstates, i.e., beams.

[0147] Furthermore, the application of multiple TRP / Panel / TCI / TO is mainly to improve the coverage of the cell edge, provide a more balanced service quality within the service area, and use different methods to collaboratively transmit data between multiple TRP / Panel / TCI / TO. From the perspective of network morphology, network deployment with a large number of distributed access points plus centralized baseband processing will be more conducive to providing a balanced user experience rate and significantly reduce the delay and signaling overhead caused by handover. By utilizing the collaboration between multiple TRPs or panels and transmitting / receiving channels from multiple beams at multiple angles, various shading / blocking effects can be better overcome, ensuring the robustness of the link connection, and it is suitable for URLLC services to improve transmission quality and meet reliability requirements.

[0148] During the R16 research phase, PDSCH transmission was enhanced based on the application of downlink multi-TRP (Transmit Receiving Point) / multi-point coordinated transmission technology between antenna panels. Because data transmission includes scheduling feedback for both uplink and downlink channels, enhancing only the downlink data channel in URLLC research does not guarantee overall service performance. Therefore, in R17 research, enhancements to the PDCCH, PUCCH, and PUSCH will continue.

[0149] Among them, the network equipment and the terminal can enhance the PUSCH uplink transmission based on Multi-TRP / Multi-panel. Specifically, the PUSCH uplink transmission scheme includes codebook-based uplink transmission and non-codebook-based uplink transmission scheme.

[0150] In related technologies, phase noise (PN) is caused by the destruction of the orthogonality of the subcarriers in an OFDM system by the implementation of the local oscillator. This causes common phase error (CPE), which results in a fixed-angle rotation of the modulation constellation and inter-carrier interference (ICI), resulting in scattering of constellation points. This is more pronounced at high frequencies. Because CPE has a greater impact, compensation for it is a primary consideration in NR. In NR, the PT-RS signal is designed for CPE estimation. To enhance signal coverage and improve signal quality, PT-RS is a UE-specific reference signal configured by the network to the terminal. PT-RS is used to track phase noise introduced by the local oscillators in the gNB and UE. PT-RS can be considered an extension of DMRS, and they share a close relationship, such as the use of the same precoding, port correlation, orthogonal sequence generation, and QCL relationship.

[0151] The embodiment of the present disclosure is described below using the association relationship between the PT-RS port and the DMRS port.

[0152] First, the DMRS port is described.

[0153] For PDSCH / PUSCH channels, the data layer of data transmission corresponds to the DMRS port used for demodulation. The DMRS design for data channels (PDSCH / PUSCH) in NR systems mainly includes front-load DMRS and additional DMRS.

[0154] For front-load DMRS, the first appearance of DMRS within each scheduling time unit should be as close as possible to the scheduling start point. The use of front-load DMRS helps the receiving side quickly estimate the channel and perform reception detection, which is important for reducing latency and supporting so-called self-contained architectures. Depending on the total number of orthogonal DMRS ports, front-load DMRS can occupy up to two consecutive orthogonal frequency division multiplexing (OFDM) symbols.

[0155] Front-load DMRS design ideas are divided into two categories. The first type (type 1) adopts the COMB+OCC structure, and the second type (type 2) adopts the FDM+OCC structure.

[0156] Figures 4A to 4D Schematic diagrams of two types of front-load DMRS configurations are shown. Figure 4A 、 Figure 4B A schematic diagram of DMRS pattern mapping of 1 OFDM symbol and 2 OFDM symbols corresponding to configuration type 1 is shown. Figure 4C 、 Figure 4D A schematic diagram of DMRS pattern mapping of 1 OFDM symbol and 2 OFDM symbols corresponding to configuration type 2 is shown.

[0157] The number of DMRS ports depends on the number of orthogonal ports used for transmission. Front-load DMRS can be configured for up to two OFDM symbols. Considering power efficiency, using a two-symbol front-load DMRS utilizes TD-OCC in the time domain, in addition to frequency-domain CS or OCC.

[0158] For low-mobility scenarios, front-load DMRS can achieve channel estimation performance that meets demodulation requirements with low overhead. However, NR systems consider mobile speeds up to 500 km / h. To address such a large dynamic range of mobility, in addition to front-load DMRS, more DMRS symbols must be inserted within the scheduling duration in medium / high-speed scenarios to ensure accurate estimation of time-varying channel characteristics. NR systems utilize a DMRS structure that combines front-load DMRS with additional DMRS symbols with configurable time-domain density. Each additional DMRS group has a repeating pattern of the front-load DMRS. Therefore, similar to the front-load DMRS, each additional DMRS group can occupy up to two consecutive DMRS symbols. Depending on the specific use case, up to three additional DMRS groups can be configured in each scheduling period. The number of additional DMRS symbols depends on higher-layer parameter configuration and the specific scheduling duration.

[0159] The relevant protocols provide a DMRS port allocation method for different parameter configurations under the uplink Cyclic Prefix Orthogonal Frequency-Division Multiplexing (CP-OFDM) waveform.

[0160] The following table shows the DMRS port allocation for different parameter configurations. In the following table, Value represents the code point, Number of DMRS CDM group(s) without data represents the number of DMRS CDM groups not occupied by data, DMRS port represents the DMRS port, and Number of front-load symbols represents the number of front-load symbols.

[0161] Table 1

[0162]

[0163] Among them, Table 1 shows Antenna port(s) (antenna port), transform precoder is disabled (conversion precoding is disabled), dmrs-Type = 1 (DMRS type), maxLength (maximum length) = 1, RANK (number of transmission layers) = 1, that is, DMRS port allocation is shown in the case of DMRS type 1, single symbol, and single stream transmission.

[0164] Table 2

[0165]

[0166] Among them, Table 2 shows Antenna port(s) (antenna port), transform precoder is disabled (conversion precoding is disabled), dmrs-Type = 1 (DMRS type), maxLength (maximum length) = 1, RANK (number of transmission layers) = 2, that is, in the case of DMRS type 1, single symbol, and dual-layer transmission, the DMRS port allocation is shown.

[0167] Table 3

[0168]

[0169] Among them, Table 3 shows Antenna port(s) (antenna port), transform precoder is disabled (conversion precoding is disabled), dmrs-Type = 1 (DMRS type), maxLength (maximum length) = 1, RANK (number of transmission layers) = 3, that is, DMRS port allocation is shown in the case of DMRS type 1, single symbol, and three-layer transmission.

[0170] Table 4

[0171]

[0172] Among them, Table 4 shows Antenna port(s) (antenna port), transform precoder is disabled (conversion precoding is disabled), dmrs-Type = 1 (DMRS type), maxLength (maximum length) = 1, RANK (number of transmission layers) = 4, that is, DMRS port allocation is shown in the case of DMRS type 1, single symbol, and four-layer transmission.

[0173] Table 5

[0174]

[0175] Among them, Table 5 shows Antenna port(s) (antenna port), transform precoder is disabled (conversion precoding is disabled), dmrs-Type = 1 (DMRS type), maxLength (maximum length) = 2, RANK (number of transmission layers) = 1, that is, DMRS port allocation in the case of DMRS type 1, two symbols, and single stream transmission.

[0176] Table 6

[0177]

[0178] Among them, Table 6 shows Antenna port(s) (antenna port), transform precoder is disabled (conversion precoding is disabled), dmrs-Type = 1 (DMRS type), maxLength (maximum length) = 2, RANK (number of transmission layers) = 2, that is, DMRS port allocation is shown in the case of DMRS type 1, two symbols, and two-layer transmission.

[0179] Table 7

[0180]

[0181] Among them, Table 7 shows Antenna port(s) (antenna port), transform precoder is disabled (conversion precoding is disabled), dmrs-Type = 1 (DMRS type), maxLength (maximum length) = 2, RANK (number of transmission layers) = 3, that is, DMRS port allocation is shown in the case of DMRS type 1, two symbols, and three-layer transmission.

[0182] Table 8

[0183]

[0184] Among them, Table 8 shows Antenna port(s) (antenna port), transform precoder is disabled (conversion precoding is disabled), dmrs-Type = 1 (DMRS type), maxLength (maximum length) = 2, RANK (number of transmission layers) = 2, that is, DMRS port allocation is shown in the case of DMRS type 1, two symbols, and four-layer transmission.

[0185] Table 9

[0186]

[0187] Among them, Table 9 shows Antenna port(s) (antenna port), transform precoder is disabled (conversion precoding is disabled), dmrs-Type = 2 (DMRS type), maxLength (maximum length) = 1, RANK (number of transmission layers) = 1, that is, in the case of DMRS type 2, single symbol, single layer transmission, DMRS port allocation is shown.

[0188] Table 10

[0189]

[0190] Among them, Table 10 shows Antenna port(s) (antenna port), transform precoder is disabled (conversion precoding is disabled), dmrs-Type = 2 (DMRS type), maxLength (maximum length) = 1, RANK (number of transmission layers) = 2, that is, in the case of DMRS type 2, single symbol, and two-layer transmission, the DMRS port allocation is shown.

[0191] Table 11

[0192]

[0193] Among them, Table 11 shows Antenna port(s) (antenna port), transform precoder is disabled (conversion precoding is disabled), dmrs-Type = 2 (DMRS type), maxLength (maximum length) = 1, RANK (number of transmission layers) = 3, that is, in the case of DMRS type 2, single symbol, and three-layer transmission, the DMRS port allocation is shown.

[0194] Table 12

[0195]

[0196]

[0197] Among them, Table 12 shows Antenna port(s) (antenna port), transform precoder is disabled (conversion precoding is disabled), dmrs-Type = 2 (DMRS type), maxLength (maximum length) = 1, RANK (number of transmission layers) = 4, that is, DMRS port allocation is shown in the case of DMRS type 2, single symbol, and four-layer transmission.

[0198] Table 13

[0199]

[0200] Among them, Table 13 shows Antenna port(s) (antenna port), transform precoder is disabled (conversion precoding is disabled), dmrs-Type = 2 (DMRS type), maxLength (maximum length) = 2, RANK (number of transmission layers) = 1, that is, in the case of DMRS type 2, two symbols, and single transmission, the DMRS port allocation is shown.

[0201] Table 14

[0202]

[0203]

[0204] Among them, Table 14 shows Antenna port(s) (antenna port), transform precoder is disabled (conversion precoding is disabled), dmrs-Type = 2 (DMRS type), maxLength (maximum length) = 2, RANK (number of transmission layers) = 2, that is, in the case of DMRS type 2, two symbols, and dual-layer transmission, DMRS port allocation is shown.

[0205] Table 15

[0206]

[0207] Among them, Table 15 shows Antenna port(s) (antenna port), transform precoder is disabled (conversion precoding is disabled), dmrs-Type = 2 (DMRS type), maxLength (maximum length) = 2, RANK (number of transmission layers) = 3, that is, in the case of DMRS type 2, two symbols, and three-layer transmission, the DMRS port allocation is shown.

[0208] Table 16

[0209]

[0210] Among them, Table 16 shows Antenna port(s) (antenna port), transform precoder is disabled (conversion precoding is disabled), dmrs-Type = 2 (DMRS type), maxLength (maximum length) = 2, RANK (number of transmission layers) = 4, that is, DMRS port allocation is shown in the case of DMRS type 2, two symbols, and four-layer transmission.

[0211] The following describes the PT-RS port.

[0212] The number of PT-RS ports is related to the number of phase noise sources. When there are multiple independent phase noise sources, each phase noise source requires a PT-RS port for phase estimation. Related technologies support one PT-RS port for downlink and two PT-RS ports for uplink.

[0213] In the related art, whether to transmit PT-RS in uplink is configured through high-layer parameters (DMRS-UplinkConfig, PT-RS-UplinkConfig).

[0214] For example, the phaseTrackingRS is configured for the UE in the higher-layer parameter DMRS-UplinkConfig to configure the uplink transmission PT-RS. If the higher-layer parameter DMRS-UplinkConfig does not include the phaseTrackingRS configured for the UE, the terminal does not transmit the PT-RS in the uplink transmission.

[0215] There is an association relationship between the PT-RS port and the DMRS port, which is indicated by a PT-RS-DMRS association indication field (PT-RS-DMRS association indication field).

[0216] In one example, if the higher layer parameters configure the UE with the parameter UL-PT-RS-present and the number of PT-RS ports is 1 or 2, then the PT-RS-DMRS association indication field in UL DCI0_1 / 0_2 indicates a DM-RS port is associated with this PT-RS port. The specific association relationship is shown in the following table:

[0217] For the case of a single PT-RS port, Table 17 shows the association relationship between the PT-RS port and the DMRS port for uplink PT-RS port 0.

[0218]

[0219] Table 17

[0220] For the case of two PT-RS ports, Table 18 shows the association relationship between the PT-RS port and the DMRS port for uplink PT-RS port 0.

[0221]

[0222] Table 18

[0223] The maximum number of PT-RS ports is determined by configuring maxNrofPorts in the higher-level parameter PT-RS-UplinkConfig to 'n2'. If n2 indicates a maximum number of PT-RS ports of 2, network devices are divided into two groups based on the DMRS ports corresponding to the SRS resources and associate them with the PT-RS ports.

[0224] In the uplink enhancement of R18, it is necessary to consider how to improve STxMP transmission through multi-panel / multi-TRP to support higher throughput and more reliable transmission performance.

[0225] In order to support the simultaneous uplink transmission scheme of multiple panels based on single-DCI, it is necessary to consider different association mapping indication schemes between PT-RS and DMRS under different transmission multiplexing schemes, so as to support accurate estimation of CPE in the case of multiple panels of the terminal.

[0226] An embodiment of the present disclosure provides a solution for a terminal to determine an indication of the association relationship between a PT-RS port and a DMRS port in a support STxMP transmission scheme. When the terminal performs STxMP transmission of PUSCH based on the S-DCI scheduling method, the network device configures the terminal to send a PT-RS reference signal and sends indication information to the terminal, and the indication information is used to indicate the association relationship between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal, thereby enhancing the association relationship between the PT-RS port and the DMRS port in STxMP transmission. Through the present disclosure, different association mapping indication schemes between PT-RS and DMRS can be considered under different transmission multiplexing schemes, thereby supporting accurate estimation of CPE in the case of multiple panels of the terminal.

[0227] Figure 5 FIG. 1 is a flow chart showing a method for indicating an uplink PT-RS port according to an exemplary embodiment. Figure 5 As shown, the uplink PT-RS port indication method is used in a network device and includes the following steps.

[0228] In step S11 , in response to determining that the terminal performs STxMP transmission of the PUSCH based on the S-DCI scheduling mode, the terminal is configured to send a PT-RS reference signal.

[0229] In step S12, indication information is sent to the terminal, where the indication information is used to indicate the association relationship between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal.

[0230] In an embodiment of the present disclosure, when a network device determines that a terminal is performing STxMP transmission of a PUSCH based on an S-DCI scheduling method, the network device configures the terminal to enable a PT-RS transmission function to configure the terminal to transmit a PT-RS reference signal. The network device transmits to the terminal indication information indicating an association relationship between a PT-RS port and a DMRS port when the terminal transmits the PT-RS reference signal, thereby enhancing the association relationship between the PT-RS port and the DMRS port in STxMP transmission.

[0231] In one implementation of the uplink PT-RS port indication method provided by an embodiment of the present disclosure, when a network device determines that a terminal is performing STxMP transmission of a PUSCH based on an S-DCI scheduling method, the network device configures the terminal to transmit a PT-RS reference signal and sends indication information to the terminal. This indication information includes a PT-RS-DMRS association relationship indication field, where different indication modes of the PT-RS-DMRS association relationship indication field are used to indicate different association relationships between PT-RS ports and DMRS ports.

[0232] In one implementation of the uplink PT-RS port indication method provided by an embodiment of the present disclosure, the manner in which the association relationship between the PT-RS port and the DMRS port is indicated is determined based on at least one of the following information:

[0233] A: Maximum number of PT-RS ports;

[0234] B: The transmission mode used by the terminal for uplink transmission;

[0235] C: The actual number of transmission layers of the terminal.

[0236] In one implementation of the method for indicating an uplink PT-RS port provided by an embodiment of the present disclosure, an indication method for determining an association relationship between a PT-RS port and a DMRS port is determined based on a maximum number of PT-RS ports.

[0237] In the uplink PT-RS port indication method provided by the embodiment of the present disclosure, the network device configures PT-RS sending to be turned on and simultaneously configures the maximum number of PT-RS ports maxNrofPorts.

[0238] The maximum number of PT-RS ports is 1 or 2.

[0239] In one implementation, the network device configures a maximum number of PT-RS ports with a default value of 2.

[0240] In the embodiment of the present disclosure, the indication method of the association relationship between the PT-RS port and the DMRS port is determined based on the maximum number of PT-RS ports, and the different determination methods of the association relationship between the corresponding PT-RS port and the DMRS port are based on the maximum number of PT-RS ports being 1 or 2.

[0241] In one implementation of the method for indicating an uplink PT-RS port provided by an embodiment of the present disclosure, a method for indicating the association relationship between a PT-RS port and a DMRS port is determined based on the maximum number of PT-RS ports and the actual number of transmission layers.

[0242] In one implementation of the uplink PT-RS port indication method provided by an embodiment of the present disclosure, in response to the maximum number of PT-RS ports being 1, an indication method for the association relationship between the PT-RS port and the DMRS port is determined based on the actual number of transmission layers.

[0243] Figure 6 FIG. 1 is a flow chart showing a method for determining an indication of an association relationship between a PT-RS port and a DMRS port according to an exemplary embodiment. Figure 6 As shown, the following steps are included.

[0244] In step S21, it is determined that the maximum number of PT-RS ports is 1.

[0245] In step S22, based on the actual number of transmission layers, the indication method of the association relationship between the PT-RS port and the DMRS port is determined.

[0246] Among them, the indication method of the PT-RS-DMRS association relationship indication field in the embodiment of the present disclosure can be, for example, a bit indication method, and the indication method can also be understood as a bit overhead.

[0247] In one implementation of the uplink PT-RS port indication method provided by an embodiment of the present disclosure, in response to the actual number of transmission layers being greater than 1, the PT-RS-DMRS association relationship indication field is indicated by 2 bits, and the number of DMRS ports is the total number of all DMRS ports allocated for the terminal indication by S-DCI.

[0248] In one example, in a scheme for indicating the association relationship between PT-RS and DMRS by a terminal supporting STxMP transmission, when the network device configures PT-RS transmission to be turned on and configures the maximum number of PT-RS ports maxNrofPorts to be 1, that is, when PT-RS is a single port, for the case where the number of transmission layers is greater than 1, the association relationship between PT-RS and DMRS is indicated using 2 bits.

[0249] Among them, when the actual number of transmission layers is greater than 1 and the PT-RS-DMRS association relationship indication field is indicated by 2 bits, the mapping method of the PT-RS-DMRS association relationship indication field is the same as the PT-RS-DMRS association relationship indication field mapping method in the case of a single PT-RS port shown in Table 17. In this case, the DMRS port is all DMRS ports scheduled to the terminal, that is, the number of DMRS ports is the total number of all DMRS ports allocated for the terminal as indicated by the S-DCI.

[0250] In one implementation of the uplink PT-RS port indication method provided by an embodiment of the present disclosure, in response to the maximum number of PT-RS ports being 2, an indication method for the association relationship between the PT-RS port and the DMRS port is determined based on the transmission mode and the actual number of transmission layers.

[0251] Figure 7 FIG. 1 is a flow chart showing a method for determining an indication of an association relationship between a PT-RS port and a DMRS port according to an exemplary embodiment. Figure 7 As shown, the following steps are included.

[0252] In step S31, the maximum number of PT-RS ports is determined to be 2.

[0253] In step S32, based on the transmission mode and the actual number of transmission layers, the indication mode of the association relationship between the PT-RS port and the DMRS port is determined.

[0254] In the embodiment of the present disclosure, the transmission mode adopted by the terminal for uplink transmission includes SDM, FDM or SFN.

[0255] In the embodiment of the present disclosure, corresponding to different transmission modes and / or actual number of transmission layers, the indication mode of the PT-RS-DMRS association relationship indication field has different corresponding determination modes.

[0256] Among them, the indication method of the PT-RS-DMRS association relationship indication field in the embodiment of the present disclosure can be, for example, a bit indication method, and the indication method can also be understood as a bit overhead.

[0257] In one implementation, in response to the transmission mode being the SDM transmission mode, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field is indicated by 0 bits.

[0258] In one example, in a scheme in which a terminal supporting STxMP transmission determines the association relationship indication between PT-RS and DMRS, when the network device configures PT-RS transmission to be turned on and configures the maximum number of PT-RS ports maxNrofPorts to 2, that is, supporting a maximum of 2 PT-RS ports, when the transmission scheme is SDM, it is necessary to determine the association relationship between the PT-RS ports and DMRS corresponding to different CW / panel / TRP / TCI.

[0259] In one example, when the transmission scheme is SDM and the number of transmission layers is 2, the actual corresponding transmission RANK combination of PUSCH on two different panels is 1+1. Therefore, for each panel, RANK is 1, so there is no need to indicate the PT-RS-DMRS association relationship, that is, the PT-RS-DMRS association relationship indication field is indicated by 0 bits.

[0260] In one embodiment, in response to the transmission mode being the SDM transmission mode, the actual number of transmission layers is greater than 2, and the indication method of the PT-RS-DMRS association relationship indication field is determined based on the combination of the number of transmission layers of PUSCH transmission corresponding to different TRP / Panel / TCI / TO supported by the terminal.

[0261] In one embodiment, the transmission layer number combinations corresponding to different TRP / Panel / TCI / TO supported by the terminal include a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, that is, the {1+1, 1+2, 2+1, 2+2} RANK combination is supported. The combination of transmission layer number 1 and transmission layer number 3 and the combination of transmission layer number 3 and transmission layer 1 are not supported, that is, the {1+3, 3+1} RANK combination is not supported. The PT-RS-DMRS association relationship indication field is indicated by 2 bits, and different bits are used to indicate different PT-RS ports of different antenna panels.

[0262] In an embodiment of the present disclosure, when the transmission scheme is SDM and the number of transmission layers is greater than 2, for a terminal that only supports the {1+1, 1+2, 2+1, 2+2} RANK combination, the PT-RS-DMRS association relationship indication field is indicated by 2 bits, the high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel among the two preceding or succeeding DMRS antenna ports that share the first PT-RS port, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel among the two preceding or succeeding DMRS antenna ports that share the second PT-RS port.

[0263] In one example, when the transmission scheme is SDM and the number of transmission layers is greater than 2, for terminals that only support the {1+1, 1+2, 2+1, 2+2} RANK combination, each panel requires 1 bit indication, and a total of 2 bits are required. For example, by default, the most significant bit (MSB) indicates PT-RS port 0 on the first panel, and the least significant bit (LSB) indicates PT-RS port 1 on the second panel. The PT-RS-DMRS association relationship indication field indication method is as follows Table 19:

[0264]

[0265] Table 19

[0266] In one embodiment, the transmission layer combinations corresponding to different TRP / Panel / TCI / TO supported by the terminal include a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2. The terminal also supports a combination of transmission layer number 1 and transmission layer number 3, and a combination of transmission layer number 3 and transmission layer number 1. That is, the terminal supports the RANK combination of {1+1, 1+2, 2+1, 2+2} while also supporting the RANK combination of {1+3, 3+1}. The PT-RS-DMRS association relationship indication field uses 2 bits to indicate different PT-RS ports in the case of the RANK combination of {2+2}, or different PT-RS ports in the case of the RANK combination of {1+3, 3+1}.

[0267] In the embodiment of the present disclosure, for the case where the RANK combination of {1+1, 1+2, 2+1, 2+2} is supported while the RANK combination of {1+3, 3+1} is supported, the PT-RS-DMRS association relationship indication field indicates different PT-RS ports in the RANK combination of {2+2} through different bits in 2 bits.

[0268] In an embodiment of the present disclosure, for the case where the {1+3, 3+1} RANK combination is supported on the basis of the {1+1, 1+2, 2+1, 2+2} RANK combination, the PT-RS-DMRS association relationship indication field indicates different PT-RS ports in the {2+2} RANK combination through different bits in 2 bits, and the high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel in the two front or rear DMRS antenna ports sharing the first PT-RS port, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel in the two front or rear DMRS antenna ports sharing the second PT-RS port.

[0269] In one example, when the transmission scheme is SDM and the number of transmission layers is greater than 2, for a terminal that supports the RANK combinations {1+3, 3+1} in addition to the RANK combinations {1+1, 1+2, 2+1, 2+2}, for the RANK combination {2+2}, two bits are required to indicate the PT-RS on different panels. Each panel requires one bit, for a total of two bits. For example, by default, the MSB indicates PT-RS port 0 on the first panel, and the LSB indicates PT-RS port 1 on the second panel.

[0270] In an embodiment of the present disclosure, for the case where the {1+3, 3+1} RANK combination is supported on the basis of the {1+1, 1+2, 2+1, 2+2} RANK combination, the PT-RS-DMRS association relationship indication field indicates the association relationship between the PT-RS port and the DMRS port on the antenna panel with a transmission layer number greater than 1 through 2 bits.

[0271] In an embodiment of the present disclosure, when the transmission scheme is SDM and the number of transmission layers is greater than 2, for the case where the {1+1, 1+2, 2+1, 2+2} RANK combination is supported while the {1+3, 3+1} RANK combination is supported, the PT-RS-DMRS association relationship indication field is indicated by 2 bits, and the 2 bits are used to indicate the association relationship between the PT-RS port corresponding to the antenna panel whose actual number of transmission layers is 3 and the 3 DMRS ports corresponding to the antenna panel; the number of PT-RS port indication bits corresponding to the antenna panel whose actual number of transmission layers is 1 is 0.

[0272] In one example, when the transmission scheme is SDM and the number of transmission layers is greater than 2, for terminals that support the {1+3, 3+1} RANK combination on the basis of the {1+1, 1+2, 2+1, 2+2} RANK combination, for the {1+3, 3+1} RANK combination, 2 bits are required to indicate the association relationship between the PT-RS port and DMRS sent on the panel with RANK>1, and the PT-RS port sent on the other panel with RANK=1 does not need to be indicated. The PT-RS-DMRS association relationship indication field indication method is as shown in Table 20 below:

[0273]

[0274] Table 20

[0275] In Table 20, in the multi-panel co-transmission mode, the maximum number of DMRSs supported by each panel is 3. The PT-RS port is 0 or 1.

[0276] In one embodiment, in response to the transmission mode being an FDM transmission mode or an SFN transmission mode, the actual number of transmission layers is greater than 1, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through different bits.

[0277] In one example, when the transmission scheme is FDM or SFN and the number of transmission layers is greater than 1, the association relationship between the PT-RS and DMRS ports needs to be indicated for the two panels respectively.

[0278] In one implementation, in response to the transmission mode being an FDM transmission mode or an SFN transmission mode, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels using 2 bits.

[0279] In one example, when the transmission scheme is FDM or SFN and the number of transmission layers is 2, each panel requires a 1-bit indication. For example, by default, the MSB indicates PT-RS port 0 on the first panel, and the LSB indicates PT-RS port 1 on the second panel. Table 19 shows the PT-RS-DMRS association indication field.

[0280] In one implementation of the disclosed embodiment, in response to the transmission mode being the FDM transmission mode or the SFN transmission mode, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through 4 bits.

[0281] In one example, when the transmission scheme is FDM or SFN and the number of transmission layers is greater than 2, each panel requires a 2-bit indication, and the existing single-port PT-RS table can be extended and designed. The PT-RS-DMRS association relationship indication field indication method is shown in Table 21:

[0282]

[0283] Table 21

[0284] In Table 21, in the multi-panel co-transmission mode, the maximum number of DMRSs supported by each panel is 3. The PT-RS ports are 0 and 1.

[0285] In one implementation of the disclosed embodiment, in response to the transmission mode being the FDM transmission mode or the SFN transmission mode, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through 2 bits.

[0286] In one embodiment, the transmission mode is an FDM transmission mode or an SFN transmission mode, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association relationship indication field is indicated by 2 bits. The high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel among the two DMRS antenna ports that share the first PT-RS port in front or behind, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel among the two DMRS antenna ports that share the second PT-RS port in front or behind.

[0287] In one example, the transmission mode is FDM transmission mode or SFN transmission mode, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association relationship indication field is indicated by 2 bits, where 1 bit MSB indicates one of the first 2 / last two DMRS ports of the first panel and is associated with PT-RS port 0, and 1 bit LSB indicates one of the first 2 / last two DMRS ports of the second panel and is associated with PT-RS port 1.

[0288] The embodiment of the present disclosure provides an uplink PT-RS port indication method. When a terminal performs STxMP transmission of a PUSCH based on an S-DCI scheduling method, a network device configures the terminal to send a PT-RS reference signal and sends indication information to the terminal. The indication information is used to indicate the association relationship between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal, thereby enhancing the association relationship between the PT-RS port and the DMRS port in STxMP transmission. Different association mapping indication schemes between PT-RS and DMRS are considered under different transmission multiplexing schemes, thereby supporting accurate estimation of CPE in the case of multiple panels of the terminal.

[0289] Based on the same concept, an embodiment of the present disclosure also provides a method for indicating an uplink PT-RS port applied to a terminal.

[0290] Figure 8 FIG. 1 is a flow chart showing a method for indicating an uplink PT-RS port according to an exemplary embodiment. Figure 8 As shown, the uplink PT-RS port indication method is used in a terminal and includes the following steps.

[0291] In step S41, indication information sent by the network device is acquired, where the indication information is used to indicate the association relationship between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal.

[0292] In step S42, STxMP transmission of the PUSCH is performed based on the S-DCI scheduling mode, and the PT-RS reference signal is sent based on the association relationship between the PT-RS port and the DMRS port indicated by the indication information.

[0293] In an embodiment of the present disclosure, the terminal performs STxMP transmission of PUSCH based on the S-DCI scheduling method, and is configured to receive indication information sent by a network device when sending a PT-RS reference signal. The indication information is used to indicate the association relationship between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal, so as to enhance the association relationship between the PT-RS port and the DMRS port in the STxMP transmission.

[0294] In one implementation, the indication information includes a PT-RS-DMRS association relationship indication field, and different indication modes of the PT-RS-DMRS association relationship indication field are used to indicate different association relationships between the PT-RS port and the DMRS port.

[0295] In one implementation of the uplink PT-RS port indication method provided by an embodiment of the present disclosure, the manner in which the association relationship between the PT-RS port and the DMRS port is indicated is determined based on at least one of the following information:

[0296] A: Maximum number of PT-RS ports;

[0297] B: The transmission mode used by the terminal for uplink transmission;

[0298] C: The actual number of transmission layers of the terminal.

[0299] In one implementation of the method for indicating an uplink PT-RS port provided by an embodiment of the present disclosure, an indication method for determining an association relationship between a PT-RS port and a DMRS port is determined based on a maximum number of PT-RS ports.

[0300] In the uplink PT-RS port indication method provided by the embodiment of the present disclosure, the network device configures PT-RS sending to be turned on and simultaneously configures the maximum number of PT-RS ports maxNrofPorts.

[0301] The maximum number of PT-RS ports is 1 or 2.

[0302] In one implementation, the network device configures a maximum number of PT-RS ports with a default value of 2.

[0303] In the embodiment of the present disclosure, the indication method of the association relationship between the PT-RS port and the DMRS port is determined based on the maximum number of PT-RS ports, and the different determination methods of the association relationship between the corresponding PT-RS port and the DMRS port are based on the maximum number of PT-RS ports being 1 or 2.

[0304] In one implementation of the method for indicating an uplink PT-RS port provided by an embodiment of the present disclosure, a method for indicating the association relationship between a PT-RS port and a DMRS port is determined based on the maximum number of PT-RS ports and the actual number of transmission layers.

[0305] In one implementation of the uplink PT-RS port indication method provided by an embodiment of the present disclosure, in response to the maximum number of PT-RS ports being 1, an indication method for the association relationship between the PT-RS port and the DMRS port is determined based on the actual number of transmission layers.

[0306] In the embodiment of the present disclosure, the transmission mode adopted by the terminal for uplink transmission includes SDM, FDM or SFN.

[0307] In the embodiment of the present disclosure, corresponding to different transmission modes and / or actual number of transmission layers, the indication mode of the PT-RS-DMRS association relationship indication field has different corresponding determination modes.

[0308] Among them, the indication method of the PT-RS-DMRS association relationship indication field in the embodiment of the present disclosure can be, for example, a bit indication method, and the indication method can also be understood as a bit overhead.

[0309] In one implementation, in response to the transmission mode being the SDM transmission mode, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field is indicated by 0 bits.

[0310] In one embodiment, in response to the transmission mode being the SDM transmission mode, the actual number of transmission layers is greater than 2, and the indication method of the PT-RS-DMRS association relationship indication field is determined based on the combination of the number of transmission layers of PUSCH transmission corresponding to different TRP / Panel / TCI / TO supported by the terminal.

[0311] In one embodiment, the transmission layer number combinations corresponding to different TRP / Panel / TCI / TO supported by the terminal include a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, that is, the {1+1, 1+2, 2+1, 2+2} RANK combination is supported. The combination of transmission layer number 1 and transmission layer number 3 and the combination of transmission layer number 3 and transmission layer 1 are not supported, that is, the {1+3, 3+1} RANK combination is not supported. The PT-RS-DMRS association relationship indication field is indicated by 2 bits, and different bits are used to indicate different PT-RS ports of different antenna panels.

[0312] In an embodiment of the present disclosure, when the transmission scheme is SDM and the number of transmission layers is greater than 2, for a terminal that only supports the {1+1, 1+2, 2+1, 2+2} RANK combination, the PT-RS-DMRS association relationship indication field is indicated by 2 bits, the high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel among the two preceding or succeeding DMRS antenna ports that share the first PT-RS port, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel among the two preceding or succeeding DMRS antenna ports that share the second PT-RS port.

[0313] In one embodiment, the transmission layer combinations corresponding to different TRP / Panel / TCI / TO supported by the terminal include a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2. The terminal also supports a combination of transmission layer number 1 and transmission layer number 3, and a combination of transmission layer number 3 and transmission layer number 1. That is, the terminal supports the RANK combination of {1+1, 1+2, 2+1, 2+2} while also supporting the RANK combination of {1+3, 3+1}. The PT-RS-DMRS association relationship indication field uses 2 bits to indicate different PT-RS ports in the case of the RANK combination of {2+2}, or different PT-RS ports in the case of the RANK combination of {1+3, 3+1}.

[0314] In the embodiment of the present disclosure, for the case where the RANK combination of {1+1, 1+2, 2+1, 2+2} is supported while the RANK combination of {1+3, 3+1} is supported, the PT-RS-DMRS association relationship indication field indicates different PT-RS ports in the RANK combination of {2+2} through different bits in 2 bits.

[0315] In an embodiment of the present disclosure, for the case where the {1+3, 3+1} RANK combination is supported on the basis of the {1+1, 1+2, 2+1, 2+2} RANK combination, the PT-RS-DMRS association relationship indication field indicates different PT-RS ports in the {2+2} RANK combination through different bits in 2 bits, and the high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel in the two front or rear DMRS antenna ports sharing the first PT-RS port, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel in the two front or rear DMRS antenna ports sharing the second PT-RS port.

[0316] In one embodiment, in response to the transmission mode being an FDM transmission mode or an SFN transmission mode, the actual number of transmission layers is greater than 1, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through different bits.

[0317] In one example, when the transmission scheme is FDM or SFN and the number of transmission layers is greater than 1, the association relationship between the PT-RS and DMRS ports needs to be indicated for the two panels respectively.

[0318] In one implementation, in response to the transmission mode being an FDM transmission mode or an SFN transmission mode, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels using 2 bits.

[0319] In one implementation of the disclosed embodiment, in response to the transmission mode being the FDM transmission mode or the SFN transmission mode, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through 4 bits.

[0320] In one implementation of the disclosed embodiment, in response to the transmission mode being the FDM transmission mode or the SFN transmission mode, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through 2 bits.

[0321] In one embodiment, the transmission mode is an FDM transmission mode or an SFN transmission mode, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association relationship indication field is indicated by 2 bits. The high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel among the two DMRS antenna ports that share the first PT-RS port in front or behind, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel among the two DMRS antenna ports that share the second PT-RS port in front or behind.

[0322] The embodiment of the present disclosure provides an uplink PT-RS port indication method. When a terminal performs STxMP transmission of a PUSCH based on an S-DCI scheduling method, the terminal is configured to send a PT-RS reference signal and receive indication information sent by a network device. The indication information is used to indicate the association relationship between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal, thereby enhancing the association relationship between the PT-RS port and the DMRS port in STxMP transmission. Different association mapping indication schemes between PT-RS and DMRS are considered under different transmission multiplexing schemes, thereby supporting accurate estimation of CPE in the case of multiple panels of the terminal.

[0323] It should be noted that the method for indicating the uplink PT-RS port of the network device in the embodiment of the present disclosure is similar to the execution process of the method for indicating the uplink PT-RS port of the terminal. For details, please refer to the description of the above-mentioned related embodiments, which will not be repeated here.

[0324] The uplink PT-RS port indication method provided in the present invention is applicable to the process of interaction between the terminal and the network device to realize the uplink PT-RS port indication. For the method of interaction between the terminal and the network device to realize the uplink PT-RS port indication, the terminal and the network device respectively have the relevant functions of implementing the uplink PT-RS port indication method involved in the above-mentioned embodiment, so they will not be repeated here.

[0325] It should be noted that those skilled in the art will appreciate that the various implementation methods / embodiments involved in the embodiments of the present disclosure can be used in conjunction with the aforementioned embodiments or can be used independently. Whether used alone or in conjunction with the aforementioned embodiments, the implementation principles are similar. In the implementation of the present disclosure, some embodiments are described in terms of implementation methods used together. Of course, those skilled in the art will appreciate that such examples are not limitations on the embodiments of the present disclosure.

[0326] Based on the same concept, an embodiment of the present disclosure also provides an indication device for an uplink PT-RS port.

[0327] It is understandable that the indication device of the uplink PT-RS port provided in the embodiment of the present disclosure includes hardware structures and / or software modules corresponding to the execution of each function in order to realize the above functions. In combination with the units and algorithm steps of each example disclosed in the embodiment of the present disclosure, the embodiment of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the technical solution of the embodiment of the present disclosure.

[0328] Figure 9 1 is a block diagram of an uplink PT-RS port indication device according to an exemplary embodiment. Figure 9 The uplink PT-RS port indication device 100 includes a processing module 101 and a sending module 102.

[0329] The processing module 101 is configured to configure the terminal to send a PT-RS reference signal when it is determined that the terminal performs STxMP of the PUSCH based on the S-DCI scheduling method; the sending module 102 is configured to send indication information to the terminal, where the indication information is used to indicate the association relationship between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal.

[0330] In one implementation, the indication information includes a PT-RS-DMRS association relationship indication field, and different indication modes of the PT-RS-DMRS association relationship indication field are used to indicate different association relationships between the PT-RS port and the DMRS port.

[0331] In one embodiment, the manner of indicating the association relationship between the PT-RS port and the DMRS port is determined based on at least one of the following information:

[0332] The maximum number of PT-RS ports; the transmission method used by the terminal for uplink transmission; the actual number of transmission layers of the terminal.

[0333] In one implementation, in response to the maximum number of PT-RS ports being 1, a manner of indicating the association relationship between the PT-RS port and the DMRS port is determined based on the actual number of transmission layers.

[0334] In one embodiment, in response to the actual number of transmission layers being greater than 1, the PT-RS-DMRS association relationship indication field is indicated by 2 bits, and the number of DMRS ports is the total number of all DMRS ports allocated to the terminal indicated by the S-DCI.

[0335] In one implementation, in response to the maximum number of PT-RS ports being 2, a method for indicating the association relationship between the PT-RS port and the DMRS port is determined based on the transmission mode and the actual number of transmission layers.

[0336] In one implementation, in response to the transmission mode being a space division multiplexing (SDM) transmission mode, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field is indicated by 0 bits.

[0337] In one embodiment, in response to the transmission mode being a space division multiplexing SDM transmission mode, the actual number of transmission layers is greater than 2, and the indication method of the PT-RS-DMRS association relationship indication field is determined based on the combination of the number of transmission layers of PUSCH transmission corresponding to different TRP / Panel / TCI / TO supported by the terminal.

[0338] In one embodiment, in response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, the combinations include a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and the combination of transmission layer number 1 and transmission layer number 3 and the combination of transmission layer number 3 and transmission layer number 1 are not supported. The PT-RS-DMRS association relationship indication field is indicated by 2 bits, and different bits are used to indicate different PT-RS ports of different antenna panels.

[0339] In one embodiment, in response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, the combinations include a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and supports a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1. The PT-RS-DMRS association relationship indication field indicates different PT-RS ports in the case of the combination of transmission layer number 2 and transmission layer number 2 through different bits in 2 bits.

[0340] In one embodiment, in response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, including a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and supporting a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1, the PT-RS-DMRS association relationship indication field indicates the association relationship between the PT-RS port and the DMRS port on the antenna panel with a transmission layer number greater than 1 through 2 bits.

[0341] In one embodiment, in response to the transmission mode being a frequency division multiplexing (FDM) transmission mode or a single frequency network (SFN) transmission mode, the actual number of transmission layers is greater than 1, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through different bits.

[0342] In one implementation, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels using 2 bits.

[0343] In one implementation, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels using 4 bits.

[0344] In one embodiment, the high-order bit is used to indicate the first PT-RS port of the first antenna panel among the two DMRS antenna ports that share the first PT-RS port in front or behind, and the low-order bit is used to indicate the second PT-RS port of the second antenna panel among the two DMRS antenna ports that share the second PT-RS port in front or behind.

[0345] In one embodiment, 2 bits are used to indicate the association relationship between the PT-RS port corresponding to the antenna panel with an actual transmission layer number of 3 and the corresponding 3 DMRS ports on the antenna panel; the number of PT-RS port indication bits corresponding to the antenna panel with an actual transmission layer number of 1 is 0.

[0346] In one embodiment, the high-order bit is used to indicate the first PT-RS port of the first antenna panel among the two DMRS antenna ports that share the first PT-RS port in front or behind, and the low-order bit is used to indicate the second PT-RS port of the second antenna panel among the two DMRS antenna ports that share the second PT-RS port in front or behind.

[0347] Figure 10 FIG. 1 is a block diagram of an uplink PT-RS port indication device according to an exemplary embodiment. Figure 10 The uplink PT-RS port indication device 200 includes an acquisition module 201 and a sending module 202.

[0348] The acquisition module 201 is configured to obtain indication information sent by the network device, where the indication information is used to indicate the association relationship between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal; the sending module 202 is configured to perform STxMP of the PUSCH based on the S-DCI scheduling method, and send the PT-RS reference signal based on the association relationship between the PT-RS port and the DMRS port indicated by the indication information.

[0349] In one implementation, the indication information includes a PT-RS-DMRS association relationship indication field, and different indication modes of the PT-RS-DMRS association relationship indication field are used to indicate different association relationships between the PT-RS port and the DMRS port.

[0350] In one embodiment, the manner of indicating the association relationship between the PT-RS port and the DMRS port is determined based on at least one of the following information:

[0351] The maximum number of PT-RS ports; the transmission method used by the terminal for uplink transmission; the actual number of transmission layers of the terminal.

[0352] In one implementation, in response to the maximum number of PT-RS ports being 1, a manner of indicating the association relationship between the PT-RS port and the DMRS port is determined based on the actual number of transmission layers.

[0353] In one embodiment, in response to the actual number of transmission layers being greater than 1, the PT-RS-DMRS association relationship indication field is indicated by 2 bits, and the number of DMRS ports is the total number of all DMRS ports allocated to the terminal indicated by the S-DCI.

[0354] In one implementation, in response to the maximum number of PT-RS ports being 2, a method for indicating the association relationship between the PT-RS port and the DMRS port is determined based on the transmission mode and the actual number of transmission layers.

[0355] In one implementation, in response to the transmission mode being a space division multiplexing (SDM) transmission mode, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field is indicated by 0 bits.

[0356] In one embodiment, in response to the transmission mode being a space division multiplexing SDM transmission mode, the actual number of transmission layers is greater than 2, and the indication method of the PT-RS-DMRS association relationship indication field is determined based on the combination of the number of transmission layers of PUSCH transmission corresponding to different TRP / Panel / TCI / TO supported by the terminal.

[0357] In one embodiment, in response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, the combinations include a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and the combination of transmission layer number 1 and transmission layer number 3 and the combination of transmission layer number 3 and transmission layer number 1 are not supported. The PT-RS-DMRS association relationship indication field is indicated by 2 bits, and different bits are used to indicate different PT-RS ports of different antenna panels.

[0358] In one embodiment, in response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, the combinations include a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and supports a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1. The PT-RS-DMRS association relationship indication field indicates different PT-RS ports in the case of the combination of transmission layer number 2 and transmission layer number 2 through different bits in 2 bits.

[0359] In one embodiment, in response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, including a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and supporting a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1, the PT-RS-DMRS association relationship indication field indicates the association relationship between the PT-RS port and the DMRS port on the antenna panel with a transmission layer number greater than 1 through 2 bits.

[0360] In one embodiment, in response to the transmission mode being a frequency division multiplexing (FDM) transmission mode or a single frequency network (SFN) transmission mode, the actual number of transmission layers is greater than 1, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through different bits.

[0361] In one implementation, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels using 2 bits.

[0362] In one implementation, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels using 4 bits.

[0363] In one embodiment, the high-order bit is used to indicate the first PT-RS port of the first antenna panel among the two DMRS antenna ports that share the first PT-RS port in front or behind, and the low-order bit is used to indicate the second PT-RS port of the second antenna panel among the two DMRS antenna ports that share the second PT-RS port in front or behind.

[0364] In one embodiment, 2 bits are used to indicate an association relationship between a PT-RS port corresponding to an antenna panel having an actual number of transmission layers of 3 and three corresponding DMRS ports on the antenna panel;

[0365] The number of PT-RS port indication bits corresponding to the antenna panel with an actual transmission layer number of 1 is 0.

[0366] In one embodiment, the high-order bit is used to indicate the first PT-RS port of the first antenna panel among the two DMRS antenna ports that share the first PT-RS port in front or behind, and the low-order bit is used to indicate the second PT-RS port of the second antenna panel among the two DMRS antenna ports that share the second PT-RS port in front or behind.

[0367] Regarding the apparatus in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0368] Figure 11 This is a block diagram of an apparatus 300 for uplink PT-RS port indication according to an exemplary embodiment. Apparatus 300 may be provided as a terminal. For example, apparatus 300 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, or the like.

[0369] Reference Figure 11 , apparatus 300 may include one or more of the following components: a processing component 302 , a memory 304 , a power component 306 , a multimedia component 308 , an audio component 310 , an input / output (I / O) interface 312 , a sensor component 314 , and a communication component 316 .

[0370] The processing component 302 generally controls the overall operation of the device 300, such as operations associated with display, phone calls, data communications, camera operation, and recording operations. The processing component 302 may include one or more processors 320 to execute instructions to perform all or part of the steps of the above-described method. In addition, the processing component 302 may include one or more modules to facilitate interaction between the processing component 302 and other components. For example, the processing component 302 may include a multimedia module to facilitate interaction between the multimedia component 308 and the processing component 302.

[0371] The memory 304 is configured to store various types of data to support operations on the device 300. Examples of such data include instructions for any application or method operating on the device 300, contact data, phone book data, messages, pictures, videos, etc. The memory 304 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0372] The power component 306 provides power to the various components of the device 300. The power component 306 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the device 300.

[0373] The multimedia component 308 includes a screen that provides an output interface between the device 300 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor can not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 308 includes a front camera and / or a rear camera. When the device 300 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[0374] The audio component 310 is configured to output and / or input audio signals. For example, the audio component 310 includes a microphone (MIC) that is configured to receive external audio signals when the device 300 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 304 or transmitted via the communication component 316. In some embodiments, the audio component 310 further includes a speaker for outputting audio signals.

[0375] I / O interface 312 provides an interface between processing component 302 and peripheral interface modules, such as a keyboard, click wheel, buttons, etc. These buttons may include but are not limited to: a home button, volume buttons, a start button, and a lock button.

[0376] The sensor assembly 314 includes one or more sensors for providing various aspects of the status assessment of the device 300. For example, the sensor assembly 314 can detect the open / closed state of the device 300, the relative positioning of components, such as the display and keypad of the device 300. The sensor assembly 314 can also detect changes in the position of the device 300 or a component of the device 300, the presence or absence of user contact with the device 300, the orientation or acceleration / deceleration of the device 300, and temperature changes of the device 300. The sensor assembly 314 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 314 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 314 may also include an accelerometer, a gyroscope, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0377] The communication component 316 is configured to facilitate wired or wireless communication between the device 300 and other devices. The device 300 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 316 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 316 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0378] In an exemplary embodiment, the apparatus 300 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above-described method.

[0379] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 304 including instructions, which can be executed by the processor 320 of the apparatus 300 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0380] Figure 12 4 is a block diagram of an apparatus 400 for uplink PT-RS port indication according to an exemplary embodiment. For example, the apparatus 400 may be provided as a network device. Figure 12 The apparatus 400 includes a processing component 422, which further includes one or more processors, and a memory resource represented by a memory 432 for storing instructions, such as an application, that can be executed by the processing component 422. The application stored in the memory 432 may include one or more modules, each corresponding to a set of instructions. In addition, the processing component 422 is configured to execute the instructions to perform the above-described method.

[0381] The device 400 may also include a power supply component 426 configured to perform power management of the device 400, a wired or wireless network interface 450 configured to connect the device 400 to a network, and an input / output (I / O) interface 458. The device 400 may operate based on an operating system stored in the memory 432, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or the like.

[0382] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 432 including instructions, which can be executed by the processing component 422 of the apparatus 400 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0383] It is further understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0384] It will be further understood that the terms "first," "second," and the like are used to describe various types of information, but such information should not be limited to these terms. These terms are used solely to distinguish information of the same type from one another and do not indicate a particular order or level of importance. In fact, the terms "first," "second," and the like are fully interchangeable. For example, first information could be referred to as second information, and similarly, second information could be referred to as first information without departing from the scope of this disclosure.

[0385] It is further understood that although operations are described in a particular order in the drawings in the embodiments of the present disclosure, this should not be construed as requiring that the operations be performed in the particular order shown or in a serial order, or that all of the operations shown be performed to obtain the desired results. In certain circumstances, multitasking and parallel processing may be advantageous.

[0386] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein.

[0387] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A method for indicating an uplink phase tracking reference signal PT-RS port, characterized in that: Applied to a network device, the method includes: Sending indication information to the terminal, wherein the indication information is used to indicate the association relationship between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal, wherein the terminal supports simultaneous transmission of STxMP by multiple antenna panels of the physical uplink shared channel PUSCH based on the single downlink control information S-DCI scheduling mode; The indication information includes a PT-RS-DMRS association relationship indication field, wherein the upper 1 bit of the PT-RS-DMRS association relationship indication field is used to indicate the first PT-RS port of the first antenna panel among the two preceding or succeeding DMRS antenna ports that share the first PT-RS port, and the lower 1 bit of the PT-RS-DMRS association relationship indication field is used to indicate the second PT-RS port of the second antenna panel among the two preceding or succeeding DMRS antenna ports that share the second PT-RS port.

2. The method according to claim 1, characterized in that Different indication modes of the PT-RS-DMRS association relationship indication field are used to indicate different association relationships between a PT-RS port and a DMRS port.

3. The method according to claim 2, characterized in that The manner of indicating the association relationship between the PT-RS port and the DMRS port is determined based on at least one of the following information: Maximum number of PT-RS ports; a transmission mode adopted by the terminal for uplink transmission; The actual number of transmission layers of the terminal.

4. The method according to claim 3, characterized in that In response to the maximum number of PT-RS ports being 1, a manner of indicating an association relationship between the PT-RS port and the DMRS port is determined based on the actual number of transmission layers.

5. The method according to claim 4, characterized in that In response to the actual number of transmission layers being greater than 1, the PT-RS-DMRS association relationship indication field is indicated by 2 bits, and the number of the DMRS ports is the total number of all DMRS ports allocated for the terminal indicated by the S-DCI.

6. The method according to claim 2, characterized in that In response to the maximum number of PT-RS ports being 2, a manner of indicating the association relationship between the PT-RS port and the DMRS port is determined based on a transmission mode and an actual number of transmission layers.

7. The method according to claim 6, characterized in that In response to the transmission mode being the space division multiplexing (SDM) transmission mode, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field does not need to set bit information for indication.

8. The method according to claim 6, characterized in that In response to the transmission mode being the space division multiplexing SDM transmission mode, the actual number of transmission layers is greater than 2, and the indication method of the PT-RS-DMRS association relationship indication field is determined based on the combination of the number of transmission layers supported by the terminal for PUSCH transmission corresponding to different TRP / Panel / TCI / TO.

9. The method according to claim 8, characterized in that In response to the terminal supporting combinations of transmission layer numbers for PUSCH transmission corresponding to different TRP / Panel / TCI / TO, including a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and not supporting a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1, the PT-RS-DMRS association relationship indication field is indicated by 2 bits, and different bits are used to indicate different PT-RS ports of different antenna panels.

10. The method according to claim 8, characterized in that In response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, including a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and supporting a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1, the PT-RS-DMRS association relationship indication field indicates different PT-RS ports in the case of a combination of transmission layer number 2 and transmission layer number 2 through different bits in 2 bits.

11. The method according to claim 8, characterized in that In response to the terminal supporting PUSCH transmission corresponding to different TRP / Panel / TCI / TO, the combinations of transmission layer numbers include a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and supporting a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1. The PT-RS-DMRS association relationship indication field indicates the association relationship between the PT-RS port and the DMRS port on the antenna panel with a transmission layer number greater than 1 through 2 bits.

12. The method according to claim 6, characterized in that In response to the transmission mode being a frequency division multiplexing (FDM) transmission mode or a single frequency network (SFN) transmission mode, the actual number of transmission layers is greater than 1, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through different bits.

13. The method according to claim 12, characterized in that The actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through 2 bits.

14. The method according to claim 12, characterized in that The actual number of transmission layers is greater than 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through 4 bits.

15. The method according to claim 11, characterized in that 2 bits are used to indicate the association relationship between the PT-RS port corresponding to the antenna panel with an actual transmission layer number of 3 and the three corresponding DMRS ports on the antenna panel; The PT-RS port corresponding to the antenna panel with an actual transmission layer number of 1 does not need to set bit information for indication.

16. A method for indicating an uplink phase tracking reference signal PT-RS port, characterized in that: Applied to a terminal, the method includes: Obtain indication information sent by a network device, where the indication information is used to indicate an association relationship between a PT-RS port and a DMRS port when the terminal sends a PT-RS reference signal, wherein the terminal supports simultaneous transmission of STxMPs by multiple antenna panels of a physical uplink shared channel (PUSCH) based on a single downlink control information (S-DCI) scheduling method; The indication information includes a PT-RS-DMRS association relationship indication field, wherein the upper 1 bit of the PT-RS-DMRS association relationship indication field is used to indicate the first PT-RS port of the first antenna panel among the two preceding or succeeding DMRS antenna ports that share the first PT-RS port, and the lower 1 bit of the PT-RS-DMRS association relationship indication field is used to indicate the second PT-RS port of the second antenna panel among the two preceding or succeeding DMRS antenna ports that share the second PT-RS port.

17. The method according to claim 16, characterized in that Different indication modes of the PT-RS-DMRS association relationship indication field are used to indicate different association relationships between a PT-RS port and a DMRS port.

18. The method according to claim 17, characterized in that The manner of indicating the association relationship between the PT-RS port and the DMRS port is determined based on at least one of the following information: Maximum number of PT-RS ports; a transmission mode adopted by the terminal for uplink transmission; The actual number of transmission layers of the terminal.

19. The method according to claim 18, characterized in that In response to the maximum number of PT-RS ports being 1, a manner of indicating an association relationship between the PT-RS port and the DMRS port is determined based on the actual number of transmission layers.

20. The method according to claim 19, characterized in that In response to the actual number of transmission layers being greater than 1, the PT-RS-DMRS association relationship indication field is indicated by 2 bits, and the number of the DMRS ports is the total number of all DMRS ports allocated for the terminal indicated by the S-DCI.

21. The method according to claim 17, wherein In response to the maximum number of PT-RS ports being 2, a manner of indicating the association relationship between the PT-RS port and the DMRS port is determined based on a transmission mode and an actual number of transmission layers.

22. The method according to claim 21, characterized in that In response to the transmission mode being the space division multiplexing (SDM) transmission mode, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field does not need to set bit information for indication.

23. The method according to claim 21, characterized in that In response to the transmission mode being the space division multiplexing SDM transmission mode, the actual number of transmission layers is greater than 2, and the indication method of the PT-RS-DMRS association relationship indication field is determined based on the combination of the number of transmission layers supported by the terminal for PUSCH transmission corresponding to different TRP / Panel / TCI / TO.

24. The method according to claim 23, wherein In response to the terminal supporting combinations of transmission layer numbers for PUSCH transmission corresponding to different TRP / Panel / TCI / TO, including a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and not supporting a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1, the PT-RS-DMRS association relationship indication field is indicated by 2 bits, and different bits are used to indicate different PT-RS ports of different antenna panels.

25. The method according to claim 23, characterized in that In response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, including a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and supporting a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1, the PT-RS-DMRS association relationship indication field indicates different PT-RS ports in the case of a combination of transmission layer number 2 and transmission layer number 2 through different bits in 2 bits.

26. The method according to claim 23, wherein In response to the terminal supporting PUSCH transmission corresponding to different TRP / Panel / TCI / TO, the combinations of transmission layer numbers include a combination of transmission layer number 1 and transmission layer number 1, a combination of transmission layer number 1 and transmission layer number 2, a combination of transmission layer number 2 and transmission layer number 1, and a combination of transmission layer number 2 and transmission layer number 2, and supporting a combination of transmission layer number 1 and transmission layer number 3 and a combination of transmission layer number 3 and transmission layer number 1. The PT-RS-DMRS association relationship indication field indicates the association relationship between the PT-RS port and the DMRS port on the antenna panel with a transmission layer number greater than 1 through 2 bits.

27. The method according to claim 21, characterized in that In response to the transmission mode being a frequency division multiplexing (FDM) transmission mode or a single frequency network (SFN) transmission mode, the actual number of transmission layers is greater than 1, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through different bits.

28. The method according to claim 27, characterized in that The actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through 2 bits.

29. The method according to claim 27, characterized in that The actual number of transmission layers is greater than 2, and the PT-RS-DMRS association relationship indication field indicates different PT-RS ports of different antenna panels through 4 bits.

30. The method according to claim 26, wherein 2 bits are used to indicate the association relationship between the PT-RS port corresponding to the antenna panel with an actual transmission layer number of 3 and the three corresponding DMRS ports on the antenna panel; The PT-RS port corresponding to the antenna panel with an actual transmission layer number of 1 does not need to set bit information for indication.

31. An indication device for an uplink phase tracking reference signal PT-RS port, characterized in that: include: A sending module is configured to send indication information to the terminal, wherein the indication information is used to indicate the association relationship between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal, wherein the terminal supports simultaneous transmission of STxMP by multiple antenna panels of the physical uplink shared channel PUSCH based on the single downlink control information S-DCI scheduling method; The indication information includes a PT-RS-DMRS association relationship indication field, wherein the upper 1 bit of the PT-RS-DMRS association relationship indication field is used to indicate the first PT-RS port of the first antenna panel among the two preceding or succeeding DMRS antenna ports that share the first PT-RS port, and the lower 1 bit of the PT-RS-DMRS association relationship indication field is used to indicate the second PT-RS port of the second antenna panel among the two preceding or succeeding DMRS antenna ports that share the second PT-RS port.

32. An indication device for an uplink phase tracking reference signal PT-RS port, characterized in that: include: An acquisition module is configured to acquire indication information sent by a network device, wherein the indication information is used to indicate an association relationship between a PT-RS port and a DMRS port when the terminal sends a PT-RS reference signal, wherein the terminal supports simultaneous transmission of STxMP by multiple antenna panels of a physical uplink shared channel (PUSCH) based on a single downlink control information (S-DCI) scheduling method; The indication information includes a PT-RS-DMRS association relationship indication field, wherein the upper 1 bit of the PT-RS-DMRS association relationship indication field is used to indicate the first PT-RS port of the first antenna panel among the two preceding or succeeding DMRS antenna ports that share the first PT-RS port, and the lower 1 bit of the PT-RS-DMRS association relationship indication field is used to indicate the second PT-RS port of the second antenna panel among the two preceding or succeeding DMRS antenna ports that share the second PT-RS port.

33. An indication device for an uplink phase tracking reference signal PT-RS port, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to execute the method according to any one of claims 1 to 15.

34. An indication device for an uplink phase tracking reference signal PT-RS port, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to execute the method according to any one of claims 16 to 30.

35. A storage medium, characterized in that The storage medium stores instructions, and when the instructions in the storage medium are executed by the processor of the network device, the network device is enabled to execute the method according to any one of claims 1 to 15.

36. A storage medium, characterized in that The storage medium stores instructions, and when the instructions in the storage medium are executed by the processor of the terminal, the terminal is enabled to execute the method according to any one of claims 16 to 30.

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