A method, apparatus, and storage medium for reference signal configuration

Abstract

The present disclosure relates to a reference signal configuration method, device and storage medium. The reference signal configuration method is applied to a network device, and the method includes: in response to determining that the terminal performs simultaneous transmission of STxMP by multiple antenna panels of a physical uplink shared channel (PUSCH) based on a single downlink control information (DCI) scheduling method, sending phase tracking reference signal (PT‑RS) configuration information to the terminal; the PT‑RS configuration information is used to configure the terminal to use a single panel or multiple panels for PT‑RS transmission in the STxMP transmission, and the maximum number of PT‑RS ports supported. The present disclosure can uniquely indicate the consistency of the maximum number of PT‑RS ports supported by the terminal and the panel for PT‑RS transmission.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a reference signal configuration method, device, and storage medium. 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, in order to enhance signal coverage and improve signal quality, the Phase Tracking Reference Signal (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). Among them, 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 DCI), it is necessary to consider different association mapping indication schemes between PT-RS and DMRS under different transmission multiplexing schemes, thereby supporting the PT-RS configuration enhancement method when the terminal falls back to STRP transmission under STxMP transmission configuration in the case of multi-Panel. Summary of the Invention

[0005] To overcome the problems existing in the related art, the present disclosure provides a reference signal configuration method, device and storage medium.

[0006] According to a first aspect of an embodiment of the present disclosure, a reference signal configuration method is provided, which is applied to a network device. The method includes:

[0007] In response to determining that the terminal performs simultaneous transmission of STxMPs on multiple antenna panels of a physical uplink shared channel (PUSCH) based on a single downlink control information (DCI) scheduling mode, phase tracking reference signal (PT-RS) configuration information is sent to the terminal;

[0008] The PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by the terminal for using a single panel or multiple panels to perform PT-RS transmission in the STxMP transmission.

[0009] In one embodiment, the PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by each single panel for corresponding PT-RS transmission.

[0010] In one embodiment, the PT-RS configuration information is further used to configure the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in the STxMP transmission.

[0011] In one embodiment, the method further includes: determining the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in the STxMP transmission based on the maximum number of PT-RS ports supported by the terminal and / or the maximum number of PT-RS ports supported by a single panel.

[0012] In one embodiment, in response to the terminal transmitting in the STxMP, based on the SRS resource set indication indication field, determining a single panel used by the terminal to transmit the PUSCH from a single panel to a single TRP;

[0013] The maximum number of PT-RS ports supported by the terminal for PT-RS transmission using the single panel is the maximum number of PT-RS ports supported by the single panel for PT-RS transmission configured in the configuration information.

[0014] In one embodiment, in response to the terminal transmitting in the STxMP, based on the SRS resource set indication indication field, the terminal determines the multiple panels used for PUSCH transmission from multiple panels to multiple TRPs, and the maximum number of PT-RS ports supported by the multiple panels is the maximum number of PT-RS ports supported by the terminal configured by the configuration information.

[0015] In one embodiment, the number of PT-RS ports actually transmitted by the single Panel in the PUSCH transmission of the terminal from a single Panel to a single TRP is determined based on the number of PUSCH transmission streams in the PUSCH transmission, the antenna port grouping corresponding to the number of transmission streams, and the maximum number of PT-RS ports supported by the Panel.

[0016] In one embodiment, the transmission mode of the PUSCH transmission includes a scheduled-based PUSCH transmission mode, a type 1 transmission mode based on a non-scheduled PUSCH, or a type 2 transmission mode based on a non-scheduled PUSCH.

[0017] According to a second aspect of an embodiment of the present disclosure, a reference signal configuration method is provided, applied to a terminal, the method including:

[0018] In response to the terminal performing simultaneous transmission of STxMPs by a multi-antenna panel of a physical uplink shared channel (PUSCH) based on a single downlink control information (DCI) scheduling mode, a phase tracking reference signal (PT-RS) configuration information is sent by a receiving network device;

[0019] The PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by the terminal for using a single panel or multiple panels to perform PT-RS transmission in the STxMP transmission.

[0020] In one embodiment, the PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by each single panel for corresponding PT-RS transmission.

[0021] In one embodiment, the PT-RS configuration information is further used to configure the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in the STxMP transmission.

[0022] In one embodiment, the method further comprises:

[0023] Based on the maximum number of PT-RS ports supported by the terminal and / or the maximum number of PT-RS ports supported by a single panel, the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in the STxMP transmission is determined.

[0024] In one embodiment, in response to the terminal determining, based on the SRS resource set indication indication field in the STxMP transmission, that the terminal transmits a single panel to be used by the PUSCH of a single TRP;

[0025] The maximum number of PT-RS ports supported by the terminal for PT-RS transmission using the single panel is the maximum number of PT-RS ports supported by the single panel for PT-RS transmission in the configuration information.

[0026] In one embodiment, in response to the terminal transmitting in the STxMP, based on the SRS resource set indication indication field, the multiple panels used by the terminal to send PUSCH from multiple panels to multiple TRPs are determined, and the maximum number of PT-RS ports supported by the multiple panels is the maximum number of PT-RS ports supported by the terminal configured by the configuration information.

[0027] In one embodiment, the number of PT-RS ports actually transmitted by the single Panel in the PUSCH transmission of the terminal from a single Panel to a single TRP is determined based on the number of PUSCH transmission streams in the PUSCH transmission, the antenna port grouping corresponding to the number of transmission streams, and the maximum number of PT-RS ports supported by the Panel.

[0028] In one embodiment, the transmission mode of the PUSCH transmission includes a scheduled-based PUSCH transmission mode, a type 1 transmission mode based on a non-scheduled PUSCH, or a type 2 transmission mode based on a non-scheduled PUSCH.

[0029] According to a third aspect of an embodiment of the present disclosure, a reference signal configuration apparatus is provided, applied to a network device, the apparatus including:

[0030] A sending unit is configured to send phase tracking reference signal PT-RS configuration information to the terminal in response to determining that the terminal performs simultaneous transmission of STxMPs by multiple antenna panels of a physical uplink shared channel (PUSCH) based on a single downlink control information (DCI) scheduling mode.

[0031] The PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by the terminal for using a single panel or multiple panels to perform PT-RS transmission in the STxMP transmission.

[0032] In one embodiment, the PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by each single panel for corresponding PT-RS transmission.

[0033] In one embodiment, the PT-RS configuration information is further used to configure the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in the STxMP transmission.

[0034] In one embodiment, the device is further configured to:

[0035] Based on the maximum number of PT-RS ports supported by the terminal and / or the maximum number of PT-RS ports supported by a single panel, the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in the STxMP transmission is determined.

[0036] In one embodiment, in response to the terminal determining, based on the SRS resource set indication indication field in the STxMP transmission, that the terminal performs PUSCH transmission from a single panel to a single TRP using a single panel;

[0037] The maximum number of PT-RS ports supported by the terminal for PT-RS transmission using the single panel is the maximum number of PT-RS ports supported by the single panel for PT-RS transmission configured in the configuration information.

[0038] In one embodiment, in response to the terminal transmitting in the STxMP, based on the SRS resource set indication indication field, the multiple panels used by the terminal to send PUSCH from multiple panels to multiple TRPs are determined, and the maximum number of PT-RS ports supported by the multiple panels is the maximum number of PT-RS ports supported by the terminal configured by the configuration information.

[0039] In one embodiment, the number of PT-RS ports actually transmitted by the single Panel in the PUSCH transmission of the terminal from a single Panel to a single TRP is determined based on the number of PUSCH transmission streams in the PUSCH transmission, the antenna port grouping corresponding to the number of transmission streams, and the maximum number of PT-RS ports supported by the Panel.

[0040] In one embodiment, the transmission mode of the PUSCH transmission includes a scheduled-based PUSCH transmission mode, a type 1 transmission mode based on a non-scheduled PUSCH, or a type 2 transmission mode based on a non-scheduled PUSCH.

[0041] According to a fourth aspect of an embodiment of the present disclosure, a reference signal configuration device is provided, applied to a terminal, the device including:

[0042] A receiving unit is configured to receive phase tracking reference signal PT-RS configuration information sent by a network device in response to the terminal performing simultaneous transmission of STxMP by multiple antenna panels of a physical uplink shared channel PUSCH based on a single downlink control information DCI scheduling mode;

[0043] The PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by the terminal for using a single panel or multiple panels to perform PT-RS transmission in the STxMP transmission.

[0044] In one embodiment, the PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by each single panel for corresponding PT-RS transmission.

[0045] In one embodiment, the PT-RS configuration information is further used to configure the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in the STxMP transmission.

[0046] In one embodiment, the device is further configured to:

[0047] Based on the maximum number of PT-RS ports supported by the terminal and / or the maximum number of PT-RS ports supported by a single panel, the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in the STxMP transmission is determined.

[0048] In one embodiment, in response to the terminal determining, in the STxMP transmission, based on the SRS resource set indication indication field, that the terminal transmits a single panel used by the PUSCH from a single panel to a single TRP;

[0049] The maximum number of PT-RS ports supported by the terminal for PT-RS transmission using the single panel is the maximum number of PT-RS ports supported by the single panel for PT-RS transmission in the configuration information.

[0050] In one embodiment, in response to the terminal determining the multiple panels used by the terminal to send PUSCH from multiple panels to multiple TRPs based on the SRS resource set indication field in the STxMP transmission, the maximum number of PT-RS ports supported by the multiple panels is the maximum number of PT-RS ports supported by the terminal configured by the configuration information.

[0051] In one embodiment, the number of PT-RS ports actually transmitted by the single Panel in the PUSCH transmission of the terminal from a single Panel to a single TRP is determined based on the number of PUSCH transmission streams in the PUSCH transmission, the antenna port grouping corresponding to the number of transmission streams, and the maximum number of PT-RS ports supported by the Panel.

[0052] In one embodiment, the transmission mode of the PUSCH transmission includes a scheduled-based PUSCH transmission mode, a type 1 transmission mode based on a non-scheduled PUSCH, or a type 2 transmission mode based on a non-scheduled PUSCH.

[0053] According to a fifth aspect of an embodiment of the present disclosure, a reference signal configuration apparatus is provided, including:

[0054] processor;

[0055] a memory for storing processor-executable instructions;

[0056] The processor is configured to: execute the method described in the first aspect of the claim or any one of the embodiments of the first aspect.

[0057] According to a sixth aspect of an embodiment of the present disclosure, a reference signal configuration apparatus is provided, including:

[0058] processor;

[0059] a memory for storing processor-executable instructions;

[0060] The processor is configured to execute the method described in the second aspect of the claim or any one of the embodiments of the second aspect.

[0061] 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.

[0062] 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.

[0063] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects: When a terminal simultaneously transmits STxMP using multiple panels on a PUSCH based on a single DCI scheduling method, the network device is configured to send PT-RS configuration information, and configures the maximum number of PT-RS ports supported by the terminal for PT-RS transmission using a single panel or multiple panels during STxMP transmission, thereby enhancing the association between PT-RS ports and DMRS ports. Different association mapping indication schemes between PT-RS and DMRS are considered under different transmission multiplexing schemes, thereby supporting accurate CPE estimation in the case of multiple panels of the terminal.

[0064] 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

[0065] 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.

[0066] Figure 1 A schematic diagram of a wireless communication system for an uplink PT-RS port indication method is shown.

[0067] Figure 2 This is a logical diagram of multi-panel transmission implementation based on S-DCI.

[0068] Figure 3 A schematic diagram of a codeword-to-layer mapping scheme is shown.

[0069] Figures 4A to 4D Schematic diagrams showing the design of two types of front-load DMRS configurations are shown.

[0070] Figure 5 The figure is a flowchart of a reference signal configuration method according to an exemplary embodiment.

[0071] Figure 6 The figure is a flowchart of a reference signal configuration method according to an exemplary embodiment.

[0072] Figure 7The present invention is a flowchart of a method for determining a single panel used by a terminal to transmit PUSCH from a single panel to a single TRP according to an exemplary embodiment.

[0073] Figure 8 It is a flowchart of a method for determining multiple panels used by a terminal to send PUSCH from multiple panels to multiple TRPs according to an exemplary embodiment.

[0074] Figure 9 The figure is a flowchart of a reference signal configuration method according to an exemplary embodiment.

[0075] Figure 10 The figure is a flowchart of a reference signal configuration method according to an exemplary embodiment.

[0076] Figure 11 The present invention is a flowchart of a method for determining a single panel used by a terminal to transmit PUSCH from a single panel to a single TRP according to an exemplary embodiment.

[0077] Figure 12 It is a flowchart of a method for determining multiple panels used by a terminal to send PUSCH from multiple panels to multiple TRPs according to an exemplary embodiment.

[0078] Figure 13 The figure is a block diagram of a reference signal configuration device according to an exemplary embodiment.

[0079] Figure 14 The figure is a block diagram of a reference signal configuration device according to an exemplary embodiment.

[0080] Figure 15 The figure is a block diagram showing a device for configuring a reference signal according to an exemplary embodiment.

[0081] Figure 16 It is a block diagram showing a device for configuring a reference signal according to an exemplary embodiment. DETAILED DESCRIPTION

[0082] 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.

[0083] 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 1As 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 beams. PUSCH uplink transmission between the network device and the terminal can be enhanced based on multiple TRPs / Panels / TCIs / TOs.

[0084] 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.

[0085] 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), carrier sense multiple access / collision avoidance (Carrier Sense Multiple Access with CollisionAvoidance). According to the capacity, rate, delay and other factors 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 network (NR). For the convenience of description, the present disclosure sometimes refers to the wireless communication network as simply a network.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] In NR, in order to enhance signal coverage and improve signal quality, the Phase Tracking Reference Signal (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). Among them, 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.

[0090] In uplink enhancement, in order to support the simultaneous transmission of multiple panels uplink (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, so as to support the PT-RS configuration enhancement method when falling back to STRP transmission under STxMP transmission configuration in the case of terminal multi-Panel. Among them, STxMP refers to simultaneous transmission via multi-Panel uplink (Simultaneous transmission via multi-Panel,

[0091] In the related art, when a network device (such as a base station) has multiple TRPs, it can use M-TRP / multi-panel to provide services to the terminal, and introduce CoMP (Coordinated Multiple Point transmission) technology to enable the network device to provide a more balanced quality of service 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 / TCI / TO, or multiple TRP / Panel / TCI / TO to express it. In all embodiments of the present disclosure, " / " means "or".

[0092] Unlike single-point transmission such as a single TRP or panel, multi-point coordinated transmission refers to multiple TRPs (Multi-TRP, mTRP or M-TRP) / Panel / TCI / TO 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 be 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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:

[0097] QCL-TypeA: {Doppler shift, Doppler spread, average delay, delay spread}

[0098] -Except for the spatial reception parameter, all other large-scale parameters are the same.

[0099] - For frequency bands below 6 GHz, spatial reception parameters may not be required.

[0100] QCL-TypeB: {Doppler shift, Doppler spread}

[0101] - 6GHz only

[0102] QCL-TypeC: {Doppler frequency shift, average delay}

[0103] QCL-TypeD: {spatial reception parameters}

[0104] As mentioned above, since this parameter is mainly applicable to the frequency band above 6 GHz, it is considered as a separate QCL type.

[0105] 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.

[0106] At present, the bottleneck of the communication system is still the uplink transmission rate and coverage, etc. Therefore, the system enhancement direction of the R18 standard is mainly to consider using multi-panel terminals for simultaneous uplink transmission (STxMP) in the Multi-TRP scenario to increase the uplink rate and further improve the reliability of transmission, and to perform PUSCH enhancement based on the simultaneous transmission of multiple panels 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 a single downlink control signaling (single downlink control information, 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 logic diagram for implementing multi-panel transmission based on single DCI (S-DCI). Figure 2 As shown, the terminal (UE) transmits PUSCH1 and PUSCH2 through Panell and Panel2 based on transport layer (Layer) 1 and Layer 2, facing TRP1 and TRP2 respectively.

[0107] A multi-panel terminal typically configures multiple physical panels, and the capabilities of different panels may vary. For example, they may have different maximum numbers of Sounding Reference Signal (SRS) ports and support different maximum numbers of data transmission layers. For example, one panel may support a maximum of 2 layers, while another may support a maximum of 4 layers. The network device's scheduler determines whether the terminal is currently suitable for simultaneous uplink transmission on multiple panels. If the terminal is currently suitable for simultaneous uplink transmission on multiple panels and is scheduled, 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.

[0108] 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.

[0109] The current protocol supports a maximum of four uplink transmission layers, corresponding to the transmission of one codeword. Therefore, in multi-panel enhancement, another issue is how to support two codewords in the uplink to achieve flexible mapping. In related technologies, in uplink or downlink layer mapping schemes, data layers of 2-4 correspond to the transmission of one codeword (CW). This configuration makes it difficult for the same MCS to adapt to the channel conditions of different layers. Therefore, performance loss occurs when there is a large difference in channel performance between layers. Therefore, it is considered to apply two CWs for scheduling and transmission of data for layers 2-4, or only for layer 4. 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.

[0110] Among them, for the uplink synchronous transmission of multiple panels, the collaborative transmission scheduling of one TB of PUSCH based on a single DCI may support one or more transmission schemes including space division multiplexing (SDM), frequency division multiplexing (FDM) and single frequency network (SFN).

[0111] 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).

[0112] SDM space division multiplexing schemes include SDM-A and SDM-B.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] There are two possible FDM options: FDM-A and FDM-B:

[0117] 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.

[0118] 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.

[0119] For the SFN solution, a TB of PUSCH is sent on the same time-frequency 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.

[0120] 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.

[0121] 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.

[0122] Among them, the network equipment and the terminal can enhance the PUSCH uplink transmission based on multiple TRP / Panel / TCI / TO. Specifically, the PUSCH uplink transmission scheme includes codebook-based uplink transmission and non-codebook-based uplink transmission scheme.

[0123] 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.

[0124] The embodiment of the present disclosure is described below using the association relationship between the PT-RS port and the DMRS port.

[0125] First, the DMRS port is described.

[0126] 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.

[0127] 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.

[0128] The design ideas of Front-load DMRS are divided into two categories. The first category (type 1) adopts the COMB+OCC structure, and the second category (type 2) adopts the FDM+OCC structure.

[0129] Figures 4A to 4DSchematic 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.

[0130] 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.

[0131] 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.

[0132] 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.

[0133] 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.

[0134] Table 1

[0135]

[0136] 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.

[0137] Table 2

[0138]

[0139] 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.

[0140] Table 3

[0141]

[0142] 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.

[0143] Table 4

[0144]

[0145] 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.

[0146] Table 5

[0147]

[0148]

[0149] 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.

[0150] Table 6

[0151]

[0152] 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.

[0153] Table 7

[0154]

[0155] 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.

[0156] Table 8

[0157]

[0158] 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.

[0159] Table 9

[0160]

[0161] 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.

[0162] Table 10

[0163]

[0164] 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.

[0165] Table 11

[0166]

[0167] 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.

[0168] Table 12

[0169]

[0170] 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.

[0171] Table 13

[0172]

[0173] 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.

[0174] Table 14

[0175]

[0176]

[0177] 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.

[0178] Table 15

[0179]

[0180] 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.

[0181] Table 16

[0182]

[0183] 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.

[0184] The following describes the PT-RS port.

[0185] 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.

[0186] In the related art, whether to transmit PT-RS in uplink is configured through high-layer parameters (DMRS-UplinkConfig, PT-RS-UplinkConfig).

[0187] 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.

[0188] 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).

[0189] 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 DMRS port associated with this PT-RS port. The specific association relationship is shown in the following table:

[0190] 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.

[0191]

[0192] Table 17

[0193] 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.

[0194]

[0195] Table 18

[0196] The maximum number of PT-RS ports is determined by configuring the maxNrofPorts parameter in the higher-level parameter PT-RS-UplinkConfig to 'n2'. If n2 indicates a maximum number of PT-RS ports of 2, the network device effectively divides the DMRS ports corresponding to the SRS resources into two groups and confirms the association indication for each PT-RS port separately.

[0197] In related technologies, based on the mapping relationship between the transmitted signal stream and multiple TRPs / Panels / TCIs / TOs, the transmission modes of coordinated multi-point transmission technology include codebook-based transmission and non-codebook-based transmission. Among them, codebook-based transmission can include fully coherent (full coherent), partially coherent (partial coherent), and non-coherent (non-coherent).

[0198] Among them, for codebook-based transmission, if it is full coherent transmission, the bit overhead of the DMRS and PT-RS association indication depends on the number of transmission antennas and TRI. If it is partially coherent / non coherent transmission, if the indicated maximum number of PT-RS ports is 1, one port is required for transmission and corresponds to one sounding reference signal (SRS) resource. If the indicated maximum number of PT-RS ports is 2, the actual number of UL PT-RS ports transmitted and their associated number of layers are determined by the precoding matrix (Transmission Precoding matrix indicator, TPMI) and the transmission layer number TRI indication. If the number of layers indicated by TPMI in an SRS port group is 1 or 2, one PT-RS port needs to be scheduled, otherwise two PT-RS ports need to be scheduled. Two PT-RS ports need to be scheduled for uplink transmission with 3 layers.

[0199] For non-codebook-based uplink transmission, if the configured SRS resources contain the same PT-RS port index, then these resources share a PT-RS port, and the corresponding UL DMRS is also associated with the same PT-RS port. In other words, the number of scheduled UL PT-RS ports is determined by the SRI.

[0200] In the uplink enhancement of R18, consideration is given to how to support higher throughput and more reliable transmission performance through simultaneous uplink transmission of multiple TRPs / Panels / TCIs / TOs.

[0201] In order to support the multi-panel uplink simultaneous transmission scheme based on single-DCI, it is necessary to consider when falling back to single TRP transmission under STxMP transmission configuration, and 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 terminal multi-panel. Although in the related art, the maximum number of PT-RS ports supported by the terminal is configured in the Radio Resource Control (RRC) configuration. However, this method still has some defects. For example, when falling back to STRP transmission under STxMP transmission configuration, the PT-RS under a single panel cannot be accurately sent. If only the maximum number of PT-RS ports sent by the terminal is configured, for example, 2, it is unclear whether the maximum number of PT-RS ports corresponding to the sending panel used for STRP transmission is 1 or 2, resulting in the problem of being unable to uniquely indicate the association relationship between the PT-RS and DMRS actually sent by the terminal. In addition, there is not enough specific PT-RS configuration enhancement method to accurately send PT-RS under a single panel.

[0202] In view of this, an embodiment of the present disclosure provides a reference signal configuration method for configuring the maximum number of PT-RS ports for a panel, so that the maximum number of PT-RS ports supported for PT-RS transmission using a single panel or multiple panels can be determined in STxMP transmission.

[0203] Figure 5 FIG. 1 is a flow chart showing a reference signal configuration method according to an exemplary embodiment. Figure 5 As shown, the reference signal configuration method is applied to a network device and includes the following steps.

[0204] In step S11 , in response to determining that the terminal performs simultaneous STxMP transmission of multiple panels of a PUSCH based on the S-DCI scheduling mode, PT-RS configuration information is sent to the terminal.

[0205] In the embodiment of the present disclosure, the PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by the terminal for using a single panel or multiple panels to perform PT-RS transmission in STxMP transmission.

[0206] In an embodiment of the present disclosure, in response to a terminal performing simultaneous STxMP transmission using multiple panels on a PUSCH based on an S-DCI scheduling scheme, a network device sends PT-RS configuration information to the terminal. This PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by the terminal for PT-RS transmission using a single panel or multiple panels during STxMP transmission. Thus, panel-level configuration of the maximum number of PT-RS ports is implemented, allowing the determination of the maximum number of PT-RS ports supported for PT-RS transmission using a single panel or multiple panels during STxMP transmission.

[0207] In one implementation provided by an embodiment of the present disclosure, the configuration enhancement for the maximum number of PT-RS ports may include adding a configuration for the maximum number of PT-RS ports per panel. In one example, a per-panel port configuration is added to the current RRC configuration. For example, in the case of two panels, the maximum number of PT-RS ports per panel is configured in the configuration information. Specifically, the port configuration information for each panel is added to the current RRC configuration information, and the configuration information is panelMaxNrofPorts1 and panelMaxNrofPorts2, respectively.

[0208] Among them, panelMaxNrofPorts1 corresponds to the first TRP / Panel / TCI / TO, and panelMaxNrofPorts2 corresponds to the second TRP / Panel / TCI / TO. Add the parameter configuration of Panel1 and Panel2 in the IE parameter list as shown below. The parameter configuration is:

[0209] {……

[0210] panelMaxNrofPorts1 ENUMERATED{n1,n2},

[0211] panelMaxNrofPorts2 ENUMERATED{n1,n2},

[0212] …}

[0213] The ENUMERATED function is used to group the number of PT-RS ports supported by each panel into an index sequence, and ENUMERATED is used to simultaneously obtain the index and value of each panel to obtain the maximum number of PT-RS ports supported by each panel.

[0214] In one implementation of the embodiment of the present disclosure, the PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by each panel for corresponding PT-RS transmission.

[0215] In another implementation of the disclosed embodiment, the PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in STxMP transmission, which can be understood as configuring the maximum number of PT-RS ports at the terminal level.

[0216] In another embodiment of the present disclosure, the PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by each panel for PT-RS transmission, and the maximum number of PT-RS ports supported by a terminal for PT-RS transmission during STxMP transmission. This can be understood as the PT-RS configuration information being used to configure the maximum number of PT-RS ports at the panel level and the maximum number of PT-RS ports at the terminal level.

[0217] In the embodiment of the present disclosure, the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in STxMP transmission is determined based on the maximum number of PT-RS ports supported by the terminal and / or the maximum number of PT-RS ports supported by a single panel.

[0218] Figure 6 FIG. 1 is a flow chart showing a reference signal configuration method according to an exemplary embodiment. Figure 6 As shown, the following steps are included.

[0219] In step S21, based on the maximum number of PT-RS ports supported by the terminal and / or the maximum number of PT-RS ports supported by a single panel, the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in STxMP transmission is determined.

[0220] In the embodiment of the present disclosure, the maximum number of PT-RS ports supported by a single panel and a terminal is determined through RRC configuration information.

[0221] For example, to determine the maximum number of PT-RS ports supported by a single panel, based on the panelMaxNrofPorts added in the RRC configuration information, the configuration of the maximum number of PT-RS ports supported by each panel is obtained to determine the maximum number of PT-RS ports supported by a single panel.

[0222] For example, for determining the maximum number of PT-RS ports supported by the terminal: the maximum number of PT-RS ports supported by the terminal is determined through the current RRC configuration information.

[0223] In an embodiment of the present disclosure, the maximum number of PT-RS ports supported by the terminal and / or the maximum number of PT-RS ports supported by a single Panel is determined according to the above-mentioned method, and based on the maximum number of PT-RS ports supported by the terminal and / or the maximum number of PT-RS ports supported by a single Panel, the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in STxMP transmission is determined. This enables the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in STxMP transmission to be consistent with the maximum number of PT-RS ports supported by the Panel for PT-RS transmission in STxMP transmission, thereby achieving consistent understanding of the configuration between the Panel and the terminal when PT-RS transmission is performed in STxMP transmission.

[0224] In one implementation of the embodiment of the present disclosure, if the current transmission falls back to the STRP transmission state, that is, the terminal sends PUSCH from a single panel to a single TRP, the maximum number of PT-RS ports corresponding to the sending panel indicated under STRP should be according to the maximum number of PT-RS ports configured by the network device for the panel.

[0225] Among them, under S-DCI, the Panel used by the terminal in the STRP transmission state can be determined by the SRS resource set indication field in the DCI. Among them, the SRS resource set indication field is used to indicate the dynamic switching between single TRP / Panel / TCI / TO and multiple TRP / Panel / TCI / TO, and different code points can be used to indicate which TRP / Panel / TCI / TO is used when sending a single TRP / Panel / TCI / TO.

[0226] In one implementation of a reference signal configuration method provided by an embodiment of the present disclosure, in response to the terminal transmitting in STxMP, based on the SRS resource set indication indication field, a single panel used by the terminal for PUSCH transmission from a single panel to a single TRP is determined, and the maximum number of PT-RS ports configured by the network device for the determined single panel is determined as the maximum number of PT-RS ports supported by the single panel for PT-RS transmission from a single panel to a single TRP PUSCH transmission.

[0227] Figure 7 FIG. 1 is a flow chart of a method for determining a single panel used by a terminal to transmit PUSCH from a single panel to a single TRP according to an exemplary embodiment. Figure 7 As shown, the following steps are included.

[0228] In step S31, it is determined that the terminal is in the STxMP transmission state.

[0229] In step S32, based on the SRS resource set indication field, the single panel used by the terminal to send PUSCH from a single panel to a single TRP is determined.

[0230] In step S33, the maximum number of PT-RS ports supported by the single Panel for PT-RS transmission configured in the configuration information is determined as the maximum number of PT-RS ports supported by the terminal for PT-RS transmission using a single Panel.

[0231] In the embodiment of the present disclosure, the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in PUSCH transmission from a single panel to a single TRP is the maximum number of PT-RS ports supported by the terminal configured by the configuration information. It can accurately determine the maximum number of PT-RS ports supported for PT-RS transmission using a single panel, and then when falling back to STRP transmission under the STxMP transmission configuration, it can accurately determine the maximum number of PT-RS ports supported by PT-RS transmission on a single panel.

[0232] In one implementation of a reference signal configuration method provided by an embodiment of the present disclosure, in response to the terminal transmitting in STxMP, based on the SRS resource set indication indication field, the multiple panels used by the terminal to send PUSCH from multiple panels to multiple TRPs are determined, and the maximum number of PT-RS ports supported by the multiple panels is the maximum number of PT-RS ports supported by the terminal configured by the configuration information.

[0233] Figure 8 FIG. 1 is a flow chart of a method for determining multiple panels used by a terminal to transmit PUSCH from multiple panels to multiple TRPs according to an exemplary embodiment. Figure 8 As shown, the following steps are included.

[0234] In step S41, it is determined that the terminal is in the STxMP transmission state.

[0235] In step S42, based on the SRS resource set indication field, the multiple panels used by the terminal to send PUSCH from multiple panels to multiple TRPs are determined.

[0236] In step S43, the maximum number of PT-RS ports supported by the terminal configured in the panel configuration information is used as the maximum number of PT-RS ports supported by multiple panels.

[0237] In the embodiment of the present disclosure, the maximum number of PT-RS ports supported by the multiple panels used by the terminal for PT-RS transmission when sending PUSCH from multiple panels to multiple TRPs is the maximum number of PT-RS ports supported by the terminal configured by the configuration information, which can accurately determine the maximum number of PT-RS ports supported corresponding to the use of multiple panels for PT-RS transmission.

[0238] In the disclosed embodiment, in the PUSCH transmission of the terminal from a single panel to a single TRP, the number of PT-RS ports actually transmitted by the single panel is determined based on the number of PUSCH transmission streams in the PUSCH transmission, the antenna port grouping corresponding to the number of transmission streams, and the maximum number of PT-RS ports supported by the panel.

[0239] The above method is used to determine the number of PUSCH transmission streams and the antenna port grouping corresponding to the number of transmission streams in PUSCH transmission. According to the maximum number of PT-RS ports supported by the panel, the number of PT-RS ports actually transmitted by the terminal in the PUSCH transmission from a single panel to a single TRP is determined.

[0240] The PT-RS maximum port number configuration method described in the above embodiments of the present disclosure can achieve consistent configuration understanding between the panel and the terminal when PT-RS is sent during STxMP transmission. The following describes the effect of consistent configuration understanding between the panel and the terminal in conjunction with actual applications.

[0241] In the traditional implementation scheme of configuring the maximum number of PT-RS ports supported by the terminal, that is, only configuring the maximum number of PT-RS ports per UE, for example, configuring it to 2, then when falling back to sending a certain panel, the following situations may occur:

[0242] 1) The default configuration is to use a maximum of two PT-RS ports on the panel. However, if the panel's actual capability is a single PT-RS port, for example, if all antenna ports on the panel are fully coherent, the terminal will report a single PT-RS port capability, but the network equipment will interpret the terminal as reporting a two-port PT-RS, resulting in a mismatch between the terminal and the base station. Future protocols may also be expanded to include a four-port PT-RS configuration. In this case, the per-UE maximum four-port PT-RS configuration will result in even greater capability differences between different panels.

[0243] 2) Even if antenna ports are grouped on a panel, if the actual network configuration requires limiting PT-RS overhead or simplifying implementation, a maximum of one PT-RS port may be configured. In this case, the PT-RS association for a single port will be used for indication. For example, in STXMP transmission, even if a maximum of two PT-RS ports are configured per UE, the network may wish to configure each panel capable of supporting two ports to support only one PT-RS port, but existing signaling cannot support this.

[0244] However, by applying the method provided by the embodiment of the present disclosure, the network device not only configures the maximum PT-RS port per UE, but also configures the maximum number of PT-RS ports per Panel.

[0245] In an exemplary embodiment, the current STxMP transmission falls back to a single TRP transmission state, the maximum number of ports supported by the TRP for sending PT-RS is 2, and it falls back to a single Panel for sending PT-RS as an example. If the number of ports that the single Panel can support for sending PT-RS is 2, the maximum number of PT-RS ports supported by the TRP is configured according to the maximum number of ports that can support PT-RS on the single Panel as configuration information, and the TRP reports the maximum number of PT-RS ports supported for sending PT-RS as 2. If the actual number of ports for sending PT-RS by the single Panel is 1 (for example, when all antenna ports are fully coherent), the TRP is configured according to the maximum number of PT-RS ports supported for PT-RS sending as 1 as configuration information.

[0246] In another exemplary embodiment, taking the case where the current STxMP transmission falls back to a single TRP transmission state, the maximum number of ports supported by the TRP for sending PT-RS is 2, and the case where the transmission of PT-RS is performed on a single Panel is used as an example, if the actual network configuration requires limiting the PT-RS overhead or is based on some considerations of simplified implementation, the maximum number of PT-RS ports supported for transmission is input as 1 in the configuration information for configuration. According to the configuration information, the maximum number of PT-RS ports supported for PT-RS transmission by the single Panel configuration is 1, and the maximum number of PT-RS ports supported for PT-RS transmission by the TRP configuration is 1, thereby achieving consistency in the maximum number of PT-RS ports supported for PT-RS transmission on the TRP and the single Panel.

[0247] Yes, in future technological developments, it may be extended to STxMP transmission. Even if a maximum of 4 PT-RS ports are configured per UE, the network may want to configure each Panel that can actually support 2 ports to support only 1 PT-RS port at most. Therefore, the method for configuring the maximum number of PT-RS ports per Panel provided in the embodiment of the present disclosure will enable the sending panel used for STRP transmission to accurately determine the maximum number of PT-RS ports supported.

[0248] It can be understood that the PUSCH transmission mode involved in the above embodiments of the present disclosure includes a scheduled PUSCH transmission mode, a type 1 transmission mode based on a non-scheduled PUSCH, or a type 2 transmission mode based on a non-scheduled PUSCH. That is, the reference signal configuration method provided in the embodiments of the present disclosure is applicable to the scheduled PUSCH transmission mode, the type 1 transmission mode based on the non-scheduled PUSCH, and the type 2 transmission mode based on the non-scheduled PUSCH.

[0249] Based on the same concept, an embodiment of the present disclosure also provides a reference signal configuration method applied to a terminal. Figure 9 FIG. 1 is a flow chart showing a reference signal configuration method according to an exemplary embodiment. Figure 9 As shown, the reference signal configuration method is applied to a terminal and includes the following steps.

[0250] In step S51, in response to the terminal performing simultaneous transmission of STxMPs on multiple panels of a PUSCH based on an S-DCI scheduling mode, the receiving network device sends PT-RS configuration information.

[0251] In an embodiment of the present disclosure, the PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by the terminal for using a single panel or multiple panels for PT-RS transmission in STxMP transmission. In an embodiment of the present disclosure, in response to the terminal performing simultaneous STxMP transmission of multiple panels of PUSCH based on the S-DCI scheduling method, the network device sends PT-RS configuration information to the terminal. The PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by the terminal for using a single panel or multiple panels for PT-RS transmission in STxMP transmission. Therefore, the configuration of the maximum number of PT-RS ports at the panel level is implemented, so that the maximum number of PT-RS ports supported for using a single panel or multiple panels for PT-RS transmission can be determined in STxMP transmission.

[0252] In one embodiment, the T-RS configuration information is used to configure the maximum number of PT-RS ports supported by each single panel for corresponding PT-RS transmission.

[0253] In one embodiment, the PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by each single panel for corresponding PT-RS transmission.

[0254] In one embodiment, the PT-RS configuration information is further used to configure the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in STxMP transmission, which can be understood as configuring the maximum number of PT-RS ports at the terminal level.

[0255] In another embodiment of the present disclosure, the PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by each panel for PT-RS transmission, and the maximum number of PT-RS ports supported by a terminal for PT-RS transmission during STxMP transmission. This can be understood as the PT-RS configuration information being used to configure the maximum number of PT-RS ports at the panel level and the maximum number of PT-RS ports at the terminal level.

[0256] In the embodiment of the present disclosure, the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in STxMP transmission is determined based on the maximum number of PT-RS ports supported by the terminal and / or the maximum number of PT-RS ports supported by a single panel.

[0257] Figure 10 FIG. 1 is a flow chart showing a reference signal configuration method according to an exemplary embodiment. Figure 10 As shown, the following steps are included.

[0258] In step S61, based on the maximum number of PT-RS ports supported by the terminal and / or the maximum number of PT-RS ports supported by a single panel, the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in STxMP transmission is determined.

[0259] In the embodiment of the present disclosure, the maximum number of PT-RS ports supported by a single panel and a terminal is determined through RRC configuration information.

[0260] For example, for determining the maximum number of PT-RS ports supported by the terminal: the maximum number of PT-RS ports supported by the terminal is determined through the current RRC configuration information.

[0261] In an embodiment of the present disclosure, the maximum number of PT-RS ports supported by the terminal and / or the maximum number of PT-RS ports supported by a single Panel is determined according to the above-mentioned method, and based on the maximum number of PT-RS ports supported by the terminal and / or the maximum number of PT-RS ports supported by a single Panel, the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in STxMP transmission is determined. This enables the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in STxMP transmission to be consistent with the maximum number of PT-RS ports supported by the Panel for PT-RS transmission in STxMP transmission, thereby achieving consistent understanding of the configuration between the Panel and the terminal when PT-RS transmission is performed in STxMP transmission.

[0262] In one implementation of the embodiment of the present disclosure, if the current transmission falls back to the STRP transmission state, that is, the terminal sends PUSCH from a single panel to a single TRP, the maximum number of PT-RS ports corresponding to the sending panel indicated under STRP should be according to the maximum number of PT-RS ports configured by the network device for the panel.

[0263] Among them, under S-DCI, the Panel used by the terminal in the STRP transmission state can be determined by the SRS resource set indication field in the DCI. Among them, the SRS resource set indication field is used to indicate the dynamic switching between single TRP / Panel / TCI / TO and multiple TRP / Panel / TCI / TO, and different code points can be used to indicate which TRP / Panel / TCI / TO is used when sending a single TRP / Panel / TCI / TO.

[0264] In one implementation of a reference signal configuration method provided by an embodiment of the present disclosure, in response to the terminal transmitting in STxMP, based on the SRS resource set indication indication field, a single panel used by the terminal for PUSCH transmission from a single panel to a single TRP is determined, and the maximum number of PT-RS ports configured by the network device for the determined single panel is determined as the maximum number of PT-RS ports supported by the single panel for PT-RS transmission from a single panel to a single TRP PUSCH transmission.

[0265] Figure 11 FIG. 1 is a flow chart of a method for determining a single panel used by a terminal to transmit PUSCH from a single panel to a single TRP according to an exemplary embodiment. Figure 11 As shown, the following steps are included.

[0266] In step S71, it is determined that the terminal is in the STxMP transmission state.

[0267] In step S72, based on the SRS resource set indication field, the single panel used by the terminal to send PUSCH from a single panel to a single TRP is determined.

[0268] In step S73, the maximum number of PT-RS ports supported by the single Panel for PT-RS transmission configured in the configuration information is determined as the maximum number of PT-RS ports supported by the terminal for PT-RS transmission using a single Panel.

[0269] In the embodiment of the present disclosure, the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in PUSCH transmission from a single panel to a single TRP is the maximum number of PT-RS ports supported by the terminal configured by the configuration information. It can accurately determine the maximum number of PT-RS ports supported for PT-RS transmission using a single panel, and then when falling back to STRP transmission under the STxMP transmission configuration, it can accurately determine the maximum number of PT-RS ports supported by PT-RS transmission on a single panel.

[0270] In one implementation of a reference signal configuration method provided by an embodiment of the present disclosure, in response to the terminal transmitting in STxMP, based on the SRS resource set indication indication field, the multiple panels used by the terminal to send PUSCH from multiple panels to multiple TRPs are determined, and the maximum number of PT-RS ports supported by the multiple panels is the maximum number of PT-RS ports supported by the terminal configured by the configuration information.

[0271] Figure 12 FIG. 1 is a flow chart of a method for determining multiple panels used by a terminal to transmit PUSCH from multiple panels to multiple TRPs according to an exemplary embodiment. Figure 12 As shown, the following steps are included.

[0272] In step S81, it is determined that the terminal is in the STxMP transmission state.

[0273] In step S82, based on the SRS resource set indication field, the multiple panels used by the terminal to send PUSCH from multiple panels to multiple TRPs are determined.

[0274] In step S83, the maximum number of PT-RS ports supported by the terminal configured in the multi-panel configuration information is used as the maximum number of PT-RS ports supported by the multi-panel.

[0275] In the embodiment of the present disclosure, the maximum number of PT-RS ports supported by the multiple panels used by the terminal for PT-RS transmission when sending PUSCH from multiple panels to multiple TRPs is the maximum number of PT-RS ports supported by the terminal configured by the configuration information, which can accurately determine the maximum number of PT-RS ports supported corresponding to the use of multiple panels for PT-RS transmission.

[0276] In the disclosed embodiment, in the PUSCH transmission of the terminal from a single panel to a single TRP, the number of PT-RS ports actually transmitted by the single panel is determined based on the number of PUSCH transmission streams in the PUSCH transmission, the antenna port grouping corresponding to the number of transmission streams, and the maximum number of PT-RS ports supported by the panel.

[0277] The above method is used to determine the number of PUSCH transmission streams and the antenna port grouping corresponding to the number of transmission streams in PUSCH transmission. Then, based on the maximum number of PT-RS ports supported by the panel, the number of PT-RS ports actually transmitted by the terminal in the PUSCH transmission from a single panel to a single TRP is determined.

[0278] It can be understood that the PUSCH transmission mode involved in the above embodiments of the present disclosure includes a scheduled PUSCH transmission mode, a type 1 transmission mode based on a non-scheduled PUSCH, or a type 2 transmission mode based on a non-scheduled PUSCH. That is, the reference signal configuration method provided in the embodiments of the present disclosure is applicable to the scheduled PUSCH transmission mode, the type 1 transmission mode based on the non-scheduled PUSCH, and the type 2 transmission mode based on the non-scheduled PUSCH.

[0279] It should be noted that the reference signal configuration method applied to the terminal in the embodiment of the present disclosure is similar to the execution process of the reference signal configuration method applied to the network device. For details, please refer to the description of the above-mentioned related embodiments, which will not be repeated here.

[0280] The reference signal configuration method provided in the present disclosure is applicable to the process of implementing PT-RS configuration enhancement by interaction between the terminal and the network device. In the method of implementing PT-RS configuration enhancement by interaction between the terminal and the network device, the terminal and the network device respectively have the relevant functions of implementing the reference signal configuration method involved in the above embodiment, so they will not be repeated here.

[0281] 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.

[0282] Based on the same concept, an embodiment of the present disclosure also provides a reference signal configuration device.

[0283] It is understandable that the reference signal configuration device provided by 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 certain 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.

[0284] Figure 13 FIG. 1 is a block diagram of a reference signal configuration device according to an exemplary embodiment. Figure 13 , the reference signal configuration device 100 includes a sending unit 101.

[0285] The sending unit 101 is configured to send PT-RS configuration information to the terminal in response to determining that the terminal performs simultaneous STxMP transmission on a multi-antenna panel of a physical uplink shared channel PUSCH based on an S-DCI scheduling mode;

[0286] The PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by the terminal for PT-RS transmission using a single panel or multiple panels in STxMP transmission.

[0287] In one embodiment, the PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by each single panel for corresponding PT-RS transmission.

[0288] In one embodiment, the PT-RS configuration information is further used to configure the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in STxMP transmission.

[0289] In one embodiment, the sending unit 101 is further configured to:

[0290] Based on the maximum number of PT-RS ports supported by the terminal and / or the maximum number of PT-RS ports supported by a single panel, the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in STxMP transmission is determined.

[0291] In one embodiment, the sending unit 101 determines the single panel used by the terminal for PUSCH transmission from a single panel to a single TRP based on the SRS resource set indication indication field in response to the terminal in STxMP transmission in the following manner;

[0292] The maximum number of PT-RS ports supported by the terminal using a single panel for PT-RS transmission is the maximum number of PT-RS ports supported by the terminal using a single panel for PT-RS transmission configured in the configuration information.

[0293] In one embodiment, the sending unit 101 adopts the following method to respond to the terminal determining the multiple panels used by the terminal to send PUSCH from multiple panels to multiple TRPs based on the SRS resource set indication field in the STxMP transmission, and the maximum number of PT-RS ports supported by the multiple panels is the maximum number of PT-RS ports supported by the terminal configured by the configuration information.

[0294] In one embodiment, the number of PT-RS ports actually transmitted by a single panel in the PUSCH transmission from a single panel to a single TRP by the terminal is determined based on the number of PUSCH transmission streams in the PUSCH transmission, the antenna port grouping corresponding to the number of transmission streams, and the maximum number of PT-RS ports supported by the panel.

[0295] In one embodiment, the transmission mode of the PUSCH transmission includes a scheduled-based PUSCH transmission mode, a type 1 transmission mode based on a non-scheduled PUSCH, or a type 2 transmission mode based on a non-scheduled PUSCH.

[0296] Based on the same concept, an embodiment of the present disclosure also provides a reference signal configuration device.

[0297] Figure 14 FIG. 1 is a block diagram of a reference signal configuration device according to an exemplary embodiment. Figure 14 , the reference signal configuration device 200 includes a receiving unit 201.

[0298] The receiving unit 201 is configured to receive PT-RS configuration information sent by a network device in response to the terminal performing simultaneous transmission of STxMP by a multi-antenna panel of a physical uplink shared channel PUSCH based on an S-DCI scheduling mode;

[0299] The PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by the terminal for PT-RS transmission using a single panel or multiple panels in STxMP transmission.

[0300] In one embodiment, the PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by each single panel for corresponding PT-RS transmission.

[0301] In one embodiment, the PT-RS configuration information is further used to configure the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in STxMP transmission.

[0302] In one embodiment, the receiving unit 201 is further configured to determine the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in STxMP transmission based on the maximum number of PT-RS ports supported by the terminal and / or the maximum number of PT-RS ports supported by a single panel.

[0303] In one embodiment, the receiving unit 201 determines the single Panel used by the terminal for PUSCH transmission from a single Panel to a single TRP based on the SRS resource set indication indication field in response to the terminal transmitting in the STxMP in the following manner;

[0304] The maximum number of PT-RS ports supported by the terminal using a single panel for PT-RS transmission is the maximum number of PT-RS ports supported by the terminal using a single panel for PT-RS transmission in the configuration information.

[0305] In one embodiment, the receiving unit 201 responds to the terminal's transmission in STxMP in the following manner: based on the SRS resource set indication field, it determines the multiple panels used by the terminal to send PUSCH from multiple panels to multiple TRPs, and the maximum number of PT-RS ports supported by the multiple panels is the maximum number of PT-RS ports supported by the terminal configured by the configuration information.

[0306] In one embodiment, the number of PT-RS ports actually transmitted by a single panel in the PUSCH transmission from a single panel to a single TRP by the terminal is determined based on the number of PUSCH transmission streams in the PUSCH transmission, the antenna port grouping corresponding to the number of transmission streams, and the maximum number of PT-RS ports supported by the panel.

[0307] In one embodiment, the transmission mode of the PUSCH transmission includes a scheduled-based PUSCH transmission mode, a type 1 transmission mode based on a non-scheduled PUSCH, or a type 2 transmission mode based on a non-scheduled PUSCH.

[0308] 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.

[0309] Figure 15 FIG3 is a block diagram of a reference signal configuration apparatus 300 according to an exemplary embodiment. For example, the 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, etc.

[0310] Reference Figure 15 , 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 .

[0311] 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.

[0312] 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.

[0313] 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.

[0314] 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.

[0315] 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.

[0316] 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.

[0317] 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.

[0318] 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.

[0319] 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.

[0320] 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.

[0321] Figure 16 FIG1 is a block diagram of an apparatus 1100 for configuring a reference signal according to an exemplary embodiment. For example, the apparatus 1100 may be provided as a server. Figure 16 Apparatus 1100 includes a processing component 1122, which further includes one or more processors, and memory resources represented by memory 1132 for storing instructions, such as applications, that are executable by processing component 1122. The applications stored in memory 1132 may include one or more modules, each corresponding to a set of instructions. Furthermore, processing component 1122 is configured to execute the instructions to perform the aforementioned method.

[0322] The device 1100 may also include a power supply component 1126 configured to perform power management of the device 1100, a wired or wireless network interface 1150 configured to connect the device 1100 to a network, and an input / output (I / O) interface 1158. The device 1100 may operate based on an operating system stored in the memory 1132, such as Windows Server™, MacOS X™, Unix™, Linux™, FreeBSD™, or the like.

[0323] 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.

[0324] 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.

[0325] 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.

[0326] It should be noted that the various modules / units involved in the reference signal configuration apparatus 100 and the reference signal configuration apparatus 200 according to the embodiments of the present disclosure are provided for illustrative purposes only and are not intended to be limiting. For example, the reference signal configuration apparatus 100 according to the embodiments of the present disclosure may further include a receiving unit and / or a processing unit. The reference signal configuration apparatus 200 may further include a sending unit and / or a processing unit. The various units included in the reference signal configuration apparatus 100 and the reference signal configuration apparatus 200 may interact with each other and with other network element devices.

[0327] 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.

[0328] 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 reference signal configuration method, characterized in that: Applied to a network device, the method includes: In response to determining that the terminal performs simultaneous transmission of STxMPs on multiple antenna panels of a physical uplink shared channel (PUSCH) based on a single downlink control information (DCI) scheduling mode, phase tracking reference signal (PT-RS) configuration information is sent to the terminal; The multi-antenna panel includes a first panel and a second panel, and the PT-RS configuration information includes first configuration information corresponding to the first panel and second configuration information corresponding to the second panel; The PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by PT-RS transmission for each single panel; the first configuration information is used to configure the maximum number of PT-RS ports corresponding to the first panel, and the second configuration information is used to configure the maximum number of PT-RS ports corresponding to the second panel; The PT-RS configuration information is further used to configure the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in the STxMP transmission; Determine, based on a maximum number of PT-RS ports supported by the terminal, a maximum number of PT-RS ports corresponding to the first panel, and a maximum number of PT-RS ports corresponding to the second panel, a maximum number of PT-RS ports supported by the terminal for PT-RS transmission in the STxMP transmission; Based on the maximum number of PT-RS ports corresponding to the first panel or the maximum number of PT-RS ports corresponding to the second panel, the maximum number of PT-RS ports supported by the terminal for transmission using a single panel is determined.

2. The method according to claim 1, characterized in that In response to the terminal transmitting in the STxMP, a single panel used by the terminal to transmit the PUSCH from a single panel to a single TRP is determined based on the SRS resource set indication indication field.

3. The method according to claim 1, characterized in that In response to the terminal transmitting in the STxMP, the multi-panel used by the terminal to send PUSCH from multiple panels to multiple TRPs is determined based on the SRS resource set indication field, and the maximum number of PT-RS ports supported by the multiple panels is the maximum number of PT-RS ports supported by the terminal configured by the configuration information.

4. The method according to any one of claims 1 to 3, characterized in that The number of PT-RS ports actually transmitted by the single Panel in the PUSCH transmission of the terminal from a single Panel to a single TRP is determined based on the number of PUSCH transmission streams in the PUSCH transmission, the antenna port grouping corresponding to the number of transmission streams, and the maximum number of PT-RS ports supported by the Panel.

5. The method according to any one of claims 1 to 3, characterized in that The transmission mode of the PUSCH transmission includes a PUSCH transmission mode based on scheduling, a type 1 transmission mode based on a non-scheduled PUSCH, or a type 2 transmission mode based on a non-scheduled PUSCH.

6. A reference signal configuration method, characterized in that: Applied to a terminal, the method includes: In response to the terminal performing simultaneous transmission of STxMPs by a multi-antenna panel of a physical uplink shared channel (PUSCH) based on a single downlink control information (DCI) scheduling mode, a phase tracking reference signal (PT-RS) configuration information is sent by a receiving network device; The multi-antenna panel includes a first panel and a second panel, and the PT-RS configuration information includes first configuration information corresponding to the first panel and second configuration information corresponding to the second panel; The PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by PT-RS transmission for each single panel; the first configuration information is used to configure the maximum number of PT-RS ports corresponding to the first panel, and the second configuration information is used to configure the maximum number of PT-RS ports corresponding to the second panel; The PT-RS configuration information is further used to configure the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in the STxMP transmission; Determine, based on a maximum number of PT-RS ports supported by the terminal, a maximum number of PT-RS ports corresponding to the first panel, and a maximum number of PT-RS ports corresponding to the second panel, a maximum number of PT-RS ports supported by the terminal for PT-RS transmission in the STxMP transmission; Based on the maximum number of PT-RS ports corresponding to the first panel or the maximum number of PT-RS ports corresponding to the second panel, the maximum number of PT-RS ports supported by the terminal for transmission using a single panel is determined.

7. The method according to claim 6, characterized in that In response to the terminal transmitting in the STxMP, based on the SRS resource set indication indication field, it is determined that the terminal uses a single panel for PUSCH transmission from a single panel to a single TRP.

8. The method according to claim 6, characterized in that In response to the terminal transmitting in the STxMP, based on the SRS resource set indication indication field, the multi-panel used by the terminal to send PUSCH from multiple panels to multiple TRPs is determined, and the maximum number of PT-RS ports supported by the multiple panels is the maximum number of PT-RS ports supported by the terminal configured by the configuration information.

9. The method according to any one of claims 6 to 8, characterized in that The number of PT-RS ports actually transmitted by the single Panel in the PUSCH transmission of the terminal from a single Panel to a single TRP is determined based on the number of PUSCH transmission streams in the PUSCH transmission, the antenna port grouping corresponding to the number of transmission streams, and the maximum number of PT-RS ports supported by the Panel.

10. The method according to any one of claims 6 to 8, characterized in that The transmission mode of the PUSCH transmission includes a PUSCH transmission mode based on scheduling, a type 1 transmission mode based on a non-scheduled PUSCH, or a type 2 transmission mode based on a non-scheduled PUSCH.

11. A reference signal configuration device, characterized in that: Applied to network equipment, the device includes: A sending unit is configured to send phase tracking reference signal PT-RS configuration information to the terminal in response to determining that the terminal performs simultaneous transmission of STxMPs by multiple antenna panels of a physical uplink shared channel (PUSCH) based on a single downlink control information (DCI) scheduling mode. The multi-antenna panel includes a first panel and a second panel, and the PT-RS configuration information includes first configuration information corresponding to the first panel and second configuration information corresponding to the second panel; The PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by PT-RS transmission for each single panel; the first configuration information is used to configure the maximum number of PT-RS ports corresponding to the first panel, and the second configuration information is used to configure the maximum number of PT-RS ports corresponding to the second panel; The PT-RS configuration information is further used to configure the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in the STxMP transmission; a processing unit for determining, based on the maximum number of PT-RS ports supported by the terminal, the maximum number of PT-RS ports corresponding to the first panel, and the maximum number of PT-RS ports corresponding to the second panel, the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in the STxMP transmission; and determining, based on the maximum number of PT-RS ports corresponding to the first panel or the maximum number of PT-RS ports corresponding to the second panel, the maximum number of PT-RS ports supported by the terminal for transmission using a single panel.

12. A reference signal configuration device, characterized in that: Applied to a terminal, the device includes: A receiving unit is configured to receive phase tracking reference signal PT-RS configuration information sent by a network device in response to the terminal performing simultaneous transmission of STxMP by multiple antenna panels of a physical uplink shared channel PUSCH based on a single downlink control information DCI scheduling mode; The multi-antenna panel includes a first panel and a second panel, and the PT-RS configuration information includes first configuration information corresponding to the first panel and second configuration information corresponding to the second panel; The PT-RS configuration information is used to configure the maximum number of PT-RS ports supported by PT-RS transmission for each single panel; the first configuration information is used to configure the maximum number of PT-RS ports corresponding to the first panel, and the second configuration information is used to configure the maximum number of PT-RS ports corresponding to the second panel; The PT-RS configuration information is further used to configure the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in the STxMP transmission; a processing unit for determining, based on the maximum number of PT-RS ports supported by the terminal, the maximum number of PT-RS ports corresponding to the first panel, and the maximum number of PT-RS ports corresponding to the second panel, the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in the STxMP transmission; and determining, based on the maximum number of PT-RS ports corresponding to the first panel or the maximum number of PT-RS ports corresponding to the second panel, the maximum number of PT-RS ports supported by the terminal for transmission using a single panel.

13. A reference signal configuration device, 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 5, or execute the method according to any one of claims 6 to 10.

14. A storage medium, characterized in that The storage medium stores instructions. 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 described in any one of claims 1 to 5, or execute the method described in any one of claims 6 to 10.

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