CN118104173A

CN118104173A - Reference signal configuration method, device and storage medium

Info

Publication number: CN118104173A
Application number: CN202280003709.XA
Authority: CN
Inventors: 高雪媛
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2024-05-28
Also published as: WO2024065317A1

Abstract

The disclosure relates to a reference signal configuration method, a reference signal configuration device and a storage medium. A reference signal configuration method, applied to a network device, the method comprising: responding to STxMP that the terminal carries out the simultaneous transmission of the multi-antenna Panel of the physical uplink shared channel PUSCH based on a single downlink control information DCI scheduling mode, and sending phase tracking reference signal PT-RS configuration information to the terminal; the PT-RS configuration information is used for configuring the maximum PT-RS port number supported by the terminal corresponding to the PT-RS transmission by using a single Panel or multiple Panels in STxMP transmission. The method and the device can uniquely indicate the terminal to be consistent with the maximum PT-RS port number supported by the Panel for PT-RS transmission.

Description

Reference signal configuration method, device and storage medium

Technical Field

The disclosure relates to the field of communication technologies, and in particular, to a reference signal configuration method, a reference signal configuration device and a storage medium.

Background

In a multi-transmission receiving point (multi-Transmission and Reception Point, multi-TRP) scenario, the Uplink enhancement support can send Uplink channels to different transmission receiving points (Transmission and Reception Point, TRP) in different Uplink beam directions by adopting a time division multiplexing (Time Division Multiplex, TDM) multiplexing mode for the repeated sending mode of the Physical downlink shared channel (Physical Uplink SHARED CHANNEL, PUSCH)/Physical downlink control channel (Physical Uplink Control Channel, PUCCH) channels. At present, the bottleneck of the communication system still keeps up transmission rate and coverage, so as to mainly consider that in the Multi-TRP (also called mTRP or M-TRP) scenario, the Multi-antenna Panel terminal is used for up simultaneous transmission to improve up transmission rate and further improve transmission reliability for the system enhancement direction of the R18 standard.

In NR, in order to enhance signal coverage and improve signal quality, a Phase-tracking reference signal (PT-RS) is configured by the network to the terminal as a UE-specific reference signal, and the PT-RS is used to track Phase noise introduced by local oscillators in network devices and terminals and to estimate co-Phase errors (Common Phase Error, CPE). The PT-RS may be regarded as an extension of the demodulation reference signal (demodulation REFERENCE SIGNAL, DMRS) and has a close relationship, such as the same precoding, port association, generation of orthogonal sequences, quasi co-location (QCL) relationship, etc.

In uplink enhancement, in order to support a single-DCI (single DCI) -based multi-Panel uplink simultaneous transmission (Simultaneous transmission via multi-Panel, STxMP) scheme, an association mapping indication scheme between different PT-RSs and DMRSs needs to be considered under different transmission multiplexing schemes, so as to support a method for enhancing PT-RS configuration when a terminal falls back to STRP transmission under STxMP transmission configuration under multiple panels.

Disclosure of Invention

To overcome the problems in the related art, the present disclosure provides a reference signal configuration method, apparatus, and storage medium.

According to a first aspect of embodiments of the present disclosure, there is provided a reference signal configuration method, applied to a network device, the method including:

Responding to STxMP that the terminal carries out the simultaneous transmission of the multi-antenna Panel of the physical uplink shared channel PUSCH based on a single downlink control information DCI scheduling mode, and sending phase tracking reference signal PT-RS configuration information to the terminal;

The PT-RS configuration information is used for configuring the maximum PT-RS port number supported by the terminal corresponding to the PT-RS transmission by using a single Panel or multiple Panels in STxMP transmission.

In one embodiment, the PT-RS configuration information is used to configure each single Panel to respectively correspond to the maximum number of PT-RS ports supported by PT-RS transmission.

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

In one embodiment, the method further comprises: and determining the maximum PT-RS port number supported by the terminal for PT-RS transmission in STxMP transmission based on the maximum PT-RS port number supported by the terminal and/or the maximum PT-RS port number supported by a single Panel.

In one embodiment, in response to the terminal transmitting at STxMP, determining a single Panel used by the terminal for PUSCH transmission from a single Panel to a single TRP based on SRS resource set indication field;

and the maximum PT-RS port number supported by the terminal for PT-RS transmission by using the single Panel is the maximum PT-RS port number supported by the PT-RS transmission by using the single Panel configured in the configuration information.

In one embodiment, in response to the terminal transmitting at STxMP, based on SRS resource set indication domain determination, the terminal performs multi-Panel used for PUSCH transmission from multi-Panel to multi-TRP, and the maximum PT-RS port number supported by the multi-Panel is the maximum PT-RS port number supported by the terminal configured by the configuration information.

In an embodiment, the number of PT-RS ports actually transmitted by the single Panel in PUSCH transmission from the single Panel to the single TRP of the terminal is determined jointly based on the PUSCH transmission flow number in the PUSCH transmission, the antenna port grouping condition corresponding to the transmission flow number, and the maximum number of PT-RS ports supported by the Panel.

In an embodiment, the transmission mode of 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.

According to a second aspect of embodiments of the present disclosure, there is provided a reference signal configuration method, applied to a terminal, the method including:

Responding to the multi-antenna Panel simultaneous transmission STxMP of the physical uplink shared channel PUSCH by the terminal based on a single downlink control information DCI scheduling mode, and receiving phase tracking reference signal PT-RS configuration information sent by network equipment;

In one embodiment, the method further comprises:

And determining the maximum PT-RS port number supported by the terminal for PT-RS transmission in STxMP transmission based on the maximum PT-RS port number supported by the terminal and/or the maximum PT-RS port number supported by a single Panel.

In one embodiment, in response to the terminal in the STxMP transmission, determining a single Panel used by the terminal to transmit from the single Panel to PUSCH of a single TRP based on SRS resource set indication field;

And the maximum PT-RS port number supported by the terminal for carrying out PT-RS transmission by using the single Panel is the maximum PT-RS port number supported by carrying out PT-RS transmission by using the single Panel in the configuration information.

In one embodiment, in response to the terminal transmitting at STxMP, based on the SRS resource set indication field, determining multiple Panel used by the terminal to transmit PUSCH with multiple TRPs from multiple Panel, where the maximum number of PT-RS ports supported by the multiple Panel is the maximum number of PT-RS ports supported by the terminal configured by the configuration information.

According to a third aspect of embodiments of the present disclosure, there is provided a reference signal configuration apparatus applied to a network device, the apparatus comprising:

A sending unit, configured to send phase tracking reference signal PT-RS configuration information to a terminal in response to determining that the terminal performs multi-antenna Panel simultaneous transmission STxMP of a physical uplink shared channel PUSCH based on a single downlink control information DCI scheduling mode;

In one embodiment, the apparatus is further for:

In one embodiment, in response to the terminal in the STxMP transmission indicating an indication domain determination based on SRS resource set, the terminal performs a single Panel used for PUSCH transmission from a single Panel to a single TRP;

According to a fourth aspect of embodiments of the present disclosure, there is provided a reference signal configuration apparatus, applied to a terminal, the apparatus including:

a receiving unit, configured to respond to the simultaneous transmission STxMP of the multi-antenna Panel of the physical uplink shared channel PUSCH by the terminal based on a single downlink control information DCI scheduling mode, and receive phase tracking reference signal PT-RS configuration information sent by a network device;

In one embodiment, the apparatus is further for:

In one embodiment, in response to the terminal in the STxMP transmission, determining a single Panel used by the terminal to transmit from the single Panel to PUSCH of a single TRP based on an SRS resource set indication field;

In one embodiment, in response to the terminal determining, in the STxMP transmission, based on the SRS resource set indication field, that the terminal performs multi-Panel transmission from multi-Panel to multi-TRP PUSCH, the maximum PT-RS port number supported by the multi-Panel is the maximum PT-RS port number supported by the terminal configured by the configuration information.

According to a fifth aspect of embodiments of the present disclosure, there is provided a reference signal configuration apparatus, including:

A processor;

A memory for storing processor-executable instructions;

Wherein the processor is configured to: the method of the first aspect or any of the embodiments of the first aspect is performed.

According to a sixth aspect of the embodiments of the present disclosure, there is provided a reference signal configuration apparatus, including:

A processor;

A memory for storing processor-executable instructions;

wherein the processor is configured to: the method of the second aspect or any one of the embodiments of the second aspect is performed.

According to a seventh aspect of the disclosed embodiments, there is provided a storage medium having instructions stored therein, which when executed by a processor of a network device, enable the network device to perform the method of the first aspect or any one of the implementation manners of the first aspect.

According to an eighth aspect of embodiments of the present disclosure, there is provided a storage medium having stored therein instructions which, when executed by a processor of a network device, enable the network device to perform the method of the second aspect or any one of the embodiments of the second aspect.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: when the terminal carries out multi-Panel simultaneous transmission STxMP of the PUSCH based on a single DCI scheduling mode, the network equipment configures configuration information for sending PT-RS, and configures the maximum PT-RS port number supported by the terminal corresponding to the PT-RS sending by using the single Panel or the multi-Panel during STxMP transmission, so that the association relation between the PT-RS ports and the DMRS ports is enhanced. And under different transmission multiplexing schemes, different association mapping indication schemes between PT-RS and DMRS are considered, so that accurate estimation of CPE under the condition of multiple terminals.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

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

Fig. 1 shows a schematic diagram of a wireless communication system for an uplink PT-RS port indication method.

Fig. 2 is a logic diagram of a S-DCI based multi-Panel transmission implementation.

Fig. 3 shows a layer mapping scheme of codewords to layers.

Fig. 4A to 4D show schematic diagrams of pattern designs of front-load DMRS of two configuration types.

Fig. 5 is a flowchart illustrating a reference signal configuration method according to an exemplary embodiment.

Fig. 6 is a flowchart illustrating a reference signal configuration method according to an exemplary embodiment.

Fig. 7 is a flowchart illustrating a method of determining a single Panel used by a terminal for PUSCH transmission from a single Panel to a single TRP, according to an exemplary embodiment.

Fig. 8 is a flowchart illustrating a method of determining multiple Panel used by a terminal for PUSCH transmission from multiple panels to multiple TRPs, according to an exemplary embodiment.

Fig. 9 is a flowchart illustrating a reference signal configuration method according to an exemplary embodiment.

Fig. 10 is a flowchart illustrating a reference signal configuration method according to an exemplary embodiment.

Fig. 11 is a flowchart illustrating a method of determining a single Panel used by a terminal for PUSCH transmission from a single Panel to a single TRP, according to an exemplary embodiment.

Fig. 12 is a flowchart illustrating a method of determining multiple Panel used by a terminal for PUSCH transmission from multiple panels to multiple TRPs, according to an exemplary embodiment.

Fig. 13 is a block diagram of a reference signal configuration apparatus according to an exemplary embodiment.

Fig. 14 is a block diagram of a reference signal configuration apparatus according to an exemplary embodiment.

Fig. 15 is a block diagram illustrating a device for configuring a reference signal according to an exemplary embodiment.

Fig. 16 is a block diagram illustrating an apparatus for reference signal configuration, according to an example embodiment.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure.

The indication method of the uplink PT-RS port provided by the embodiment of the disclosure can be applied to the wireless communication system shown in fig. 1. As shown in fig. 1, the wireless communication system includes a network device and a terminal. The terminal is connected with the network equipment through wireless resources and performs data transmission. And the network equipment and the terminal perform data transmission based on the wave beam. The enhancement of the PUSCH uplink transmission can be performed between the network equipment and the terminal based on the multi-TRP/Panel/TCI/TO.

It will be appreciated that the wireless communication system shown in fig. 1 is only schematically illustrated, and that other network devices may be included in the wireless communication system, for example, a core network device, a wireless relay device, a wireless backhaul device, etc., which are not shown in fig. 1. The number of network devices and the number of terminals included in the wireless communication system are not limited in the embodiments of the present disclosure.

It is further understood that the wireless communication system of the disclosed embodiments is a network that provides wireless communication functionality. The wireless communication system may employ different communication techniques such as code division Multiple access (code division Multiple access, CDMA), wideband code division Multiple access (wideband code division Multiple access, WCDMA), time division Multiple access (time division Multiple access, TDMA), frequency division Multiple access (frequency division Multiple access, FDMA), orthogonal frequency division Multiple access (orthogonal frequency-division Multiple access, OFDMA), single carrier frequency division Multiple access (SINGLE CARRIER FDMA, SC-FDMA), carrier sense Multiple access/collision avoidance (CARRIER SENSE Multiple ACCESS WITH Collision Avoidance). Networks may be classified into 2G (english: generation) networks, 3G networks, 4G networks, or future evolution networks, such as 5G networks, according to factors such as capacity, rate, delay, etc., and the 5G networks may also be referred to as New Radio (NR). For convenience of description, the present disclosure will sometimes refer to a wireless communication network simply as a network.

Further, the network devices referred to in this disclosure may also be referred to as radio access network devices. The radio access network device may be: a base station, an evolved node B (bs), a home base station, an Access Point (AP) in a WIFI (WIRELESS FIDELITY) system, a wireless relay node, a wireless backhaul node, a transmission point (transmission point, TP), or a transmission reception point (transmission and reception point, TRP), etc., or may be a gNB in an NR system, or may also be a component or a part of a device that forms a base station, etc. It should be understood that in the embodiments of the present disclosure, the specific technology and specific device configuration adopted by the network device are not limited. In the present disclosure, a network device may provide communication coverage for a particular geographic area and may communicate with terminals located within that coverage area (cell). In addition, in the case of a vehicle networking (V2X) communication system, the network device may also be an in-vehicle device.

Further, a Terminal referred to in the present disclosure may also be referred to as a Terminal device, a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), or the like, and may be a device that provides voice and/or data connectivity to a User, for example, a handheld device, an in-vehicle device, or the like that has a wireless connection function. Currently, some examples of terminals are: a smart Phone (Mobile Phone), a customer premise equipment (Customer Premise Equipment, CPE), a pocket computer (Pocket Personal Computer, PPC), a palm computer, a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA), a notebook computer, a tablet computer, a wearable device, or a vehicle-mounted device, etc. In addition, in the case of a vehicle networking (V2X) communication system, the terminal device may also be an in-vehicle device. It should be understood that the embodiments of the present disclosure are not limited to the specific technology and specific device configuration adopted by the terminal.

In uplink enhancement, in order to support a single-DCI (single downlink control information, S-DCI, also referred to as single DCI) based multi-Panel uplink simultaneous transmission (Simultaneous transmission via multi-Panel, STxMP) scheme, different association mapping indication schemes between PT-RS and DMRS need to be considered under different transmission multiplexing schemes, so as to support a method for enhancing PT-RS configuration when a terminal falls back to STRP transmission under STxMP transmission configuration in multiple panels. Wherein STxMP refers to uplink simultaneous transmission over multiple Panel (Simultaneous transmission via multi-Panel,

In the related art, when a network device (e.g., a base station) has multiple TRPs, an M-TRP/multiple panel can be used to provide services for a terminal, and CoMP (Coordinated Multiple Point transmission, coordinated multi-point transmission) technology is introduced, so as to enable the network device to provide more balanced service quality in a service area. In one implementation, panel, TRP, TCI (Transmission Configuration Indication, transmission configuration indicator) and TO (transmission occasion, transmission opportunity) have a correspondence, and are therefore expressed in this disclosure as TRP/Panel/TCI/TO, or as multi-TRP/Panel/TCI/TO. In all embodiments of the present disclosure, "/" means "or".

Unlike single point transmission such as a single TRP or Panel (Panel), coordinated multipoint transmission refers TO multiple TRP (Muplti-TRP, mTRP or M-TRP)/Panel/TCI/TO providing a data service for one user. The antenna array of each TRP can be divided into a plurality of relatively independent antenna panels, so that the form and the port number of the whole array surface can be flexibly adjusted along with deployment scenes and service demands. And the antenna panels or TRPs can be connected by optical fibers, so that more flexible distributed deployment can be performed. In the millimeter wave band, the blocking effect generated by obstacles such as human bodies or vehicles is more remarkable along with the reduction of the wavelength. In this case, from the viewpoint of securing link connection robustness, transmission/reception can be performed from a plurality of beams at a plurality of angles using cooperation between a plurality of TRPs or panels, thereby reducing adverse effects caused by blocking effects.

Multiple sites involved in CoMP transmission may correspond to multiple geographically diverse sites or multiple sectors with differing antenna panel orientations. For example, when a terminal receives data from different stations, the spatial difference between the stations may cause a difference in large-scale channel parameters, such as doppler frequency offset, delay spread, etc., of the receiving links from the different stations. The large scale parameters of the channel directly affect the adjustment and optimization of the filter coefficients in channel estimation, and different channel estimation filter parameters should be used to adapt to the corresponding channel propagation characteristics corresponding to the signals sent by different stations.

Thus, although the difference in spatial location or angle between stations is transparent to the UE and CoMP operation itself, the effect of the spatial difference on the channel large scale parameters is an important factor to be considered when the UE performs channel estimation and reception detection. Thus, QUASI CO-LOCATION (QCL) was introduced in the related art. QCL means that the large scale parameters of a channel experienced by a symbol on one antenna port can be inferred from the channel experienced by a symbol on another antenna port. The large scale parameters may include delay spread, average delay, doppler spread, doppler shift, average gain, spatial reception parameters, etc.

By QCL in the sense of certain large scale parameters for two antenna ports is meant that these large scale parameters for the two ports are identical. Alternatively, as long as certain large-scale parameters of two ports are consistent, the terminal may consider the two ports to originate from the same location (i.e., quasi co-sited) regardless of their actual physical location or whether there is a difference in the orientation of the corresponding antenna panels.

For some typical application scenarios, considering possible QCL relationships between various reference signals, from the viewpoint of simplifying signaling, NR classifies several channel large-scale parameters into the following 4 types, so that the system is convenient to configure/instruct according to different scenarios:

QCL-TypeA { Doppler shift, doppler spread, average delay, delay spread }

-The other large scale parameters are identical except for the spatial reception parameter parameters.

For the frequency band below 6GHz, spatial reception parameters may not be required.

QCL-TypeB { Doppler shift, doppler spread })

For 6GHz only

QCL-TypeC { Doppler shift, average delay }

QCL-TypeD: { spatial reception parameters })

Here, as described above, since this parameter is mainly for a frequency band of 6GHz or more, it is taken as one QCL type alone.

The R17 standard supports the repeated transmission mode of the PUSCH/PUCCH channel in the Multi-TRP scene, and can transmit the uplink channel to different TRPs in different uplink beam directions by adopting a time-division multiplexing (TDM) multiplexing mode.

At present, the bottleneck of the communication system still keeps the rate and coverage of uplink transmission, so as to mainly consider that in the Multi-TRP scene, the uplink rate is improved by using the Multi-Panel terminal to perform uplink simultaneous transmission (STxMP), the reliability of transmission is further improved, and the PUSCH enhancement is performed by simultaneously transmitting the plurality of Panels of the terminal. Wherein, PUSCH enhancement based on Multi-TRP may be scheduled based on one Downlink Control Information (DCI) carried by one physical downlink control channel (Physical Downlink Control Channel, PDCCH) channel, such as single downlink control signaling (single downlink control information, S-DCI) scheduling Multi-TRP/Panel/TCI/TO transmission. Different DCI separate scheduling based on different PDCCH bearers may also be considered. Fig. 2 is a logic diagram of a multi-Panel transmission implementation based on SINGLE DCI (S-DCI). Referring to fig. 2, a terminal (UE) performs PUSCH1 and PUSCH2 transmission based on transmission layers (Layer) 1 and Layer2, respectively, through Panel1 and Panel2, toward TRP1 and TRP 2.

Wherein, the terminal multi-Panel implementation generally configures a plurality of physical panels, and the capabilities of different panels may be different. For example, the number of ports with different maximum Sounding reference signals (Sounding REFERENCE SIGNAL, SRS) is not necessarily the same, and the number of maximum data transmission layers supported is not necessarily the same, for example, one Panel supports transmission of maximum 2 layers and another Panel supports transmission of maximum 4 layers. The scheduler of the network device may determine whether the terminal is currently suitable for uplink simultaneous transmission of multiple panels, and if the terminal is currently suitable for uplink simultaneous transmission of multiple panels and is scheduled, the network device may directly or indirectly indicate relevant transmission parameters, including terminal specific beam indication information, number of data layers used for transmission, DMRS port allocation used, and precoding indication information.

The method provided by the embodiment of the disclosure is suitable for the problem of DMRS port indication under S-DCI scheduling, namely how to determine which DMRS ports are respectively adopted by PUSCHs on different panels for transmission.

The maximum uplink transmission layer number supported by the current protocol is 4 layers, corresponding to the transmission of one codeword. Thus, there is also a problem in multi-Panel enhancement how to support 2 codewords in the upstream to achieve flexible mapping. In the related art, in the uplink or downlink layer mapping scheme, the case that the number of data layers is 2-4 corresponds to the transmission of 1 codeword (codeWord, CW). However, this configuration makes it difficult to adapt the same MCS to the channel conditions of different layers, so that performance loss occurs in the case where the difference in channel performance between layers is large. Therefore, it is considered that 2 CWs are also applied for scheduling and transmission for 2-4 layers or for data of only 4 layers. Fig. 3 shows a layer mapping scheme of codewords to layers. As shown in fig. 3 below, in STxMP transmissions under S-DCI scheduling, codeword 0 is mapped to Layer0 (CW #0 in Layer0) and codeword 1 is mapped to Layer1 (CW #1 in Layer1) for TRP0 and TRP1 oriented uplink transmissions. In this way, the network device may schedule substantially based on the inter-layer channel conditions. For example, in case of large channel layer difference, 2 CWs can be used for scheduling, corresponding to 3-layer transmission, one CW transmits 1-layer data, and another CW transmits 2-layer data. Thus, the data retransmission scheduling is also convenient, and the throughput of the system is improved. The transmission below 4 layers in the system is dominant and therefore is also beneficial for overall performance optimization.

Wherein for uplink synchronous transmission of multiple Panel, the transmission scheme that may be supported based on coordinated transmission scheduling of one TB of a single DCI for PUSCH includes one or more of a space division multiplexing (Space Division Multiplexing, SDM) scheme, a frequency division multiplexing (Frequency Division Multiplexing, FDM) scheme, and a single frequency network (Single Frequency Network, SFN) scheme.

The SDM space division multiplexing scheme mainly includes that one Transport Block (TB) of PUSCH transmits different data layers on the same time-frequency resource through two corresponding DMRS ports or port combinations allocated on different Panel, respectively, and different TRP/Panel/TCI/TO are associated with different beam/TCI states (i.e., beam indication).

TheSDMspacedivisionmultiplexingschemeincludestwoschemes,SDM-AandSDM-B.

DifferentpartsofoneTBofthePUSCHarerespectivelytransmittedonthesametime-frequencyresourcethroughtwodifferentTRPsrespectivelyfacingtocorrespondingDMRSportsorportcombinationsdistributedondifferentpanels,andthedifferentTRPs/panels/TCIs/TOarerespectivelyassociatedwithdifferentTCIstatebeams.

The SDM-B is that the repetition of the same TB corresponding TO different RV versions of the PUSCH is respectively transmitted on the same time-frequency resource by facing two different TRPs through respective corresponding DMRS ports or port combinations distributed on different panels, and the different TRPs/panels/TCIs/TO are respectively associated with different TCIstate beams.

For the FDM frequency division multiplexing scheme, one TB of the PUSCH is sent on non-overlapping frequency domain resources on the same time domain resource through the same DMRS port or port combination allocated on different Panel, respectively, facing two different TRPs, and the different TRPs/Panel/TCI/TO are associated with different TCIstate, i.e., beams, respectively.

FDMhastwopossibleschemes,FDM-aandFDM-b:

FDM-A:differentpartsofoneTBofPUSCHarerespectivelytransmittedonnon-overlappingfrequencydomainresourcesonthesametimedomainresourcethroughthesameDMRSportsorportcombinationsdistributedondifferentpanels,respectively,andthedifferentTRPs/panels/TCIs/TOarerespectivelyassociatedwithdifferentTCIstate,namelybeams.

FDM-B, namely, the repetition of the same TB corresponding TO different RV versions of the PUSCH is respectively transmitted on non-overlapping frequency domain resources on the same time domain resources by facing TO two different TRPs through the same DMRS ports or port combinations distributed on different panels, and the different TRPs/panels/TCIs/TO are respectively associated with different TCIstate beams.

For the SFN scheme, one TB of the PUSCH is sent on the same time-frequency resource through the same DMRS port or port combination allocated on different Panel, respectively, facing two different TRPs, and the different TRPs/panels/TCI/TO are associated with different TCIstate, i.e., beams, respectively.

Further, the application of multiple TRP/Panel/TCI/TO is mainly TO improve coverage at the cell edge, provide a more balanced quality of service in the service area, and cooperatively transmit data among the multiple TRP/Panel/TCI/TO in different manners. From the network morphology perspective, network deployment in a manner of centralized processing of a large number of distributed access points plus base bands is more beneficial to providing balanced user experience rates and significantly reducing the time delay and signaling overhead caused by handoff. By utilizing cooperation among a plurality of TRPs or panels, the transmission/reception of the channel is carried out from a plurality of beams at a plurality of angles, so that various shielding/blocking effects can be better overcome, the robustness of link connection is ensured, and the method is suitable for URLLC service to improve the transmission quality and meet the reliability requirement.

In the R16 research phase, PDSCH is transmission enhanced based on the application of a downlink multi-TRP (transmission reception point)/inter-antenna panel multi-point cooperative transmission technique. Since data transmission includes scheduling feedback of uplink and downlink channels, in the URLLC study, the enhancement of only the downlink data channel cannot guarantee the overall service performance. Therefore, in R17 research, enhancement of PDCCH, PUCCH and PUSCH is continued.

The enhancement of the PUSCH uplink transmission can be performed between the network equipment and the terminal based on the multi-TRP/Panel/TCI/TO. Specifically, the uplink transmission scheme of the PUSCH includes a codebook-based uplink transmission and a non-codebook-based uplink transmission scheme.

In the related art, phase Noise (PN) is generated by the local oscillator, which breaks the orthogonality of each subcarrier in the OFDM system, and this causes a co-Phase error (Common Phase Error, CPE) to cause rotation of the modulation constellation at a fixed angle and causes Inter-subcarrier interference (Inter-CARRIER INTERFERENCE, ICI) to cause scattering of constellation points, which is more obvious at high frequencies. Because of the greater impact of CPE, compensation for CPE is a major consideration in NR. In NR, the PT-RS signal is designed for CPE estimation. In order to enhance signal coverage and improve signal quality, the PT-RS is configured to the terminal by the network as a UE-specific (UE-specific) reference signal, and the PT-RS is used for tracking phase noise introduced by the gNB and local oscillators in the UE. PT-RS can be seen as an extension of DMRS with close relationships such as employing the same precoding, port association, generation of orthogonal sequences, QCL relationships, etc.

The embodiments of the present disclosure are described below in terms of an association relationship between a PT-RS port and a DMRS port.

First, DMRS ports will be described.

For PDSCH/PUSCH channels, the data layer of data transmission corresponds to DMRS ports used for demodulation. The data channel (PDSCH/PUSCH) DMRS design in NR systems mainly includes a preamble DMRS (Front-load DMRS) and an appendage DMRS (Additional DMRS).

For Front-load DMRS, the location where the DMRS first appears should be as close as possible to the starting point of scheduling within each scheduling time unit. The use of Front-load DMRS helps the receiving side to estimate the channel quickly and perform reception detection, and plays an important role in reducing the delay and supporting a so-called self-contained structure. Depending on the total number of orthogonal DMRS ports, a front-load DMRS may occupy at most two consecutive orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols.

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

Fig. 4A to 4D show schematic diagrams of pattern designs of front-load DMRS of two configuration types. Fig. 4A and fig. 4B show DMRS pattern mapping diagrams of 1 OFDM symbol and2 OFDM symbols corresponding to configuration type 1. Fig. 4C and 4D show DMRS pattern mapping diagrams of 1 OFDM symbol and2 OFDM symbols corresponding to configuration type 2.

The DMRS port number depends on the number of orthogonal ports used for transmission, and the front-load DMRS may be configured as two OFDM symbols at most. Considering the factor of power utilization efficiency, when using a front-load DMRS of two symbols, TD-OCC is used in the time domain on the basis of frequency domain CS or OCC.

For low mobility scenarios, the front-load DMRS can obtain channel estimation performance meeting demodulation requirements with lower overhead. However, the mobility speed considered by the NR system can reach 500km/h, and the NR system faces mobility with a large dynamic range, and in addition to the front-load DMRS, in a medium/high speed scenario, more DMRS symbols need to be inserted in the scheduling duration in addition to the front-load DMRS, so as to meet the accuracy of estimating the time variability of the channel. The NR system adopts a DMRS structure combining front-load DMRS and the additional DMRS with configurable time domain density. The pattern of each set of additional DMRS is a repetition of the front-load DMRS. Therefore, in accordance with the front-load DMRS, each set of additional DMRS may occupy at most two consecutive DMRS symbols. According to a specific usage scenario, at most three sets of additional DMRS can be configured in each schedule. The number of Additional DMRS depends on the higher layer parameter configuration and the specific scheduling duration.

In a related protocol, a DMRS port allocation method of different parameter configurations under an uplink cyclic prefix orthogonal frequency division multiplexing (Cyclic Prefix Orthogonal Frequency-Division Multiplexing, CP-OFDM) waveform is provided.

The following table shows DMRS port allocation cases of different parameter configurations. Wherein Value in the following table indicates a code point, number of DMRS CDM group(s) witout data indicates the Number of DMRS CDM groups not occupied by data, DMRS port indicates a DMRS port, and Number of front-load symbols indicates the Number of front-load symbols.

TABLE 1

Value	Number of DMRS CDM group(s)without data	DMRS port(s)
0	1	0
1	1	1
2	2	0
3	2	1
4	2	2
5	2	3
6-7	Reserved	Reserved

Table 1 shows Antenna port(s) (Antenna port), transform precoder is disabled (switched precoding to enable), DMRS-type=1 (DMRS Type), maxLength (maximum length) =1, rank (number of transmission layers) =1, i.e. DMRS port allocation is indicated in the case of DMRS Type 1, single symbol, single stream transmission.

TABLE 2

Value	Number of DMRS CDM group(s)without data	DMRS port(s)
0	1	0,1
1	2	0,1
2	2	2,3
3	2	0,2
4-7	Reserved	Reserved

Table 2 shows Antenna port(s) (Antenna port), transform precoder is disabled (switched precoding to enable), DMRS-type=1 (DMRS Type), maxLength (maximum length) =1, rank (number of transmission layers) =2, i.e. DMRS port allocation indication in case of DMRS Type 1, single symbol, double layer transmission.

TABLE 3 Table 3

Value	Number of DMRS CDM group(s)without data	DMRS port(s)
0	2	0-2
2-7	Reserved	Reserved

Table 3 shows Antenna port(s) (Antenna port), transform precoder is disabled (switched precoding to enable), DMRS-type=1 (DMRS Type), maxLength (maximum length) =1, rank (number of transmission layers) =3, i.e. DMRS port allocation indication in case of DMRS Type 1, single symbol, three layer transmission.

TABLE 4 Table 4

Value	Number of DMRS CDM group(s)without data	DMRS port(s)
0	2	0-3
2-7	Reserved	Reserved

Table 4 shows Antenna port(s) (Antenna port), transform precoder is disabled (switched precoding to enable), DMRS-type=1 (DMRS Type), maxLength (maximum length) =1, rank (number of transmission layers) =4, i.e. DMRS port allocation indication in case of DMRS Type 1, single symbol, four layer transmission.

TABLE 5

Value	Number of DMRS CDM group(s)without data	DMRS port(s)	Number of front-load symbols
0	1	0	1
1	1	1	1
2	2	0	1
3	2	1	1
4	2	2	1
5	2	3	1
6	2	0	2
7	2	1	2
8	2	2	2
9	2	3	2
10	2	4	2
11	2	5	2
12	2	6	2
13	2	7	2

14-15

Reserved

Table 5 shows Antenna port(s) (Antenna port), transform precoder is disabled (switched precoding to enable), DMRS-type=1 (DMRS Type), maxLength (maximum length) =2, rank (number of transmission layers) =1, i.e. DMRS port allocation is schematic in case of DMRS Type 1, two symbols, single stream transmission.

TABLE 6

Value	Number of DMRS CDM group(s)without data	DMRS port(s)	Number of front-load symbols
0	1	0,1	1
1	2	0,1	1
2	2	2,3	1
3	2	0,2	1
4	2	0,1	2
5	2	2,3	2
6	2	4,5	2
7	2	6,7	2
8	2	0,4	2
9	2	2,6	2
10-15	Reserved	Reserved	Reserved

Table 6 shows Antenna port(s) (Antenna port), transform precoder is disabled (switched precoding to enable), DMRS-type=1 (DMRS Type), maxLength (maximum length) =2, rank (number of transmission layers) =2, i.e. DMRS port allocation indication in case of DMRS Type 1, two symbols, two layer transmission.

TABLE 7

Value	Number of DMRS CDM group(s)without data	DMRS port(s)	Number of front-load symbols
0	2	0-2	1
1	2	0,1,4	2
2	2	2,3,6	2
3-15	Reserved	Reserved	Reserved

Table 7 shows Antenna port(s) (Antenna port), transform precoder is disabled (switched precoding to enable), DMRS-type=1 (DMRS Type), maxLength (maximum length) =2, rank (number of transmission layers) =3, i.e. DMRS port allocation indication in case of DMRS Type 1, two symbols, three layer transmission.

TABLE 8

Value	Number of DMRS CDM group(s)without data	DMRS port(s)	Number of front-load symbols
0	2	0-3	1
1	2	0,1,4,5	2
2	2	2,3,6,7	2
3	2	0,2,4,6	2
4-15	Reserved	Reserved	Reserved

Table 8 shows Antenna port(s) (Antenna port), transform precoder is disabled (switched precoding to enable), DMRS-type=1 (DMRS Type), maxLength (maximum length) =2, rank (number of transmission layers) =2, i.e. DMRS port allocation indication in case of DMRS Type 1, two symbols, four layer transmission.

TABLE 9

Value	Number of DMRS CDM group(s)without data	DMRS port(s)
0	1	0
1	1	1
2	2	0
3	2	1
4	2	2
5	2	3
6	3	0
7	3	1
8	3	2
9	3	3
10	3	4
11	3	5
12-15	Reserved	Reserved

Table 9 shows Antenna port(s) (Antenna port), transform precoder is disabled (switched precoding to enable), DMRS-type=2 (DMRS Type), maxLength (maximum length) =1, rank (number of transmission layers) =1, i.e. DMRS port allocation indication in case of DMRS Type 2, single symbol, single layer transmission.

Table 10

Value	Number of DMRS CDM group(s)without data	DMRS port(s)
0	1	0,1
1	2	0,1
2	2	2,3
3	3	0,1
4	3	2,3
5	3	4,5
6	2	0,2
7-15	Reserved	Reserved

Table 10 shows Antenna port(s) (Antenna port), transform precoder is disabled (switched precoding to enable), DMRS-type=2 (DMRS Type), maxLength (maximum length) =1, rank (number of transmission layers) =2, i.e. DMRS port allocation indication in case of DMRS Type 2, single symbol, two layer transmission.

TABLE 11

Value	Number of DMRS CDM group(s)without data	DMRS port(s)
0	2	0-2
1	3	0-2
2	3	3-5
3-15	Reserved	Reserved

Table 11 shows Antenna port(s) (Antenna port), transform precoder is disabled (switched precoding to enable), DMRS-type=2 (DMRS Type), maxLength (maximum length) =1, rank (number of transmission layers) =3, i.e. DMRS port allocation indication in case of DMRS Type 2, single symbol, three layer transmission.

Table 12

Value	Number of DMRS CDM group(s)without data	DMRS port(s)
0	2	0-3
1	3	0-3
2-15	Reserved	Reserved

Table 12 shows Antenna port(s) (Antenna port), transform precoder is disabled (switched precoding to enable), DMRS-type=2 (DMRS Type), maxLength (maximum length) =1, rank (number of transmission layers) =4, i.e. DMRS port allocation indication in case of DMRS Type 2, single symbol, four layer transmission.

TABLE 13

Value	Number of DMRS CDM group(s)without data	DMRS port(s)	Number of front-load symbols
0	1	0	1
1	1	1	1
2	2	0	1
3	2	1	1
4	2	2	1
5	2	3	1
6	3	0	1
7	3	1	1
8	3	2	1
9	3	3	1
10	3	4	1
11	3	5	1
12	3	0	2
13	3	1	2
14	3	2	2
15	3	3	2
16	3	4	2
17	3	5	2
18	3	6	2
19	3	7	2
20	3	8	2
21	3	9	2
22	3	10	2
23	3	11	2
24	1	0	2
25	1	1	2
26	1	6	2
27	1	7	2
28-31	Reserved	Reserved	Reserved

Table 13 shows Antenna port(s) (Antenna port), transform precoder is disabled (switched precoding to enable), DMRS-type=2 (DMRS Type), maxLength (maximum length) =2, rank (number of transmission layers) =1, i.e. DMRS port allocation indication in case of DMRS Type 2, two symbols, single transmission.

TABLE 14

Value	Number of DMRS CDM group(s)without data	DMRS port(s)	Number of front-load symbols
0	1	0,1	1
1	2	0,1	1

2	2	2,3	1
3	3	0,1	1
4	3	2,3	1
5	3	4,5	1
6	2	0,2	1
7	3	0,1	2
8	3	2,3	2
9	3	4,5	2
10	3	6,7	2
11	3	8,9	2
12	3	10,11	2
13	1	0,1	2
14	1	6,7	2
15	2	0,1	2
16	2	2,3	2
17	2	6,7	2
18	2	8,9	2
19-31	Reserved	Reserved	Reserved

Table 14 shows Antenna port(s) (Antenna port), transform precoder is disabled (switched precoding to enable), DMRS-type=2 (DMRS Type), maxLength (maximum length) =2, rank (number of transmission layers) =2, i.e. DMRS port allocation indication in case of DMRS Type 2, two symbols, double layer transmission.

TABLE 15

Value	Number of DMRS CDM group(s)without data	DMRS port(s)	Number of front-load symbols
0	2	0-2	1
1	3	0-2	1
2	3	3-5	1
3	3	0,1,6	2
4	3	2,3,8	2
5	3	4,5,10	2
6-31	Reserved	Reserved	Reserved

Table 15 shows Antenna port(s) (Antenna port), transform precoder is disabled (switched precoding to enable), DMRS-type=2 (DMRS Type), maxLength (maximum length) =2, rank (number of transmission layers) =3, i.e. DMRS port allocation indication in case of DMRS Type 2, two symbols, three layer transmission.

Table 16

Value	Number of DMRS CDM group(s)without data	DMRS port(s)	Number of front-load symbols
0	2	0-3	1
1	3	0-3	1
2	3	0,1,6,7	2
3	3	2,3,8,9	2
4	3	4,5,10,11	2
5-31	Reserved	Reserved	Reserved

Table 16 shows Antenna port(s) (Antenna port), transform precoder is disabled (switched precoding to enable), DMRS-type=2 (DMRS Type), maxLength (maximum length) =2, rank (number of transmission layers) =4, i.e. DMRS port allocation indication in case of DMRS Type 2, two symbols, four layer transmission.

The PT-RS ports are described below.

The number of ports of the PT-RS is related to the number of phase noise sources, and when a plurality of independent phase noise sources exist, each phase noise source needs one PT-RS port to perform phase estimation on the phase noise sources. In the related art, 1 PT-RS port in the downlink and 2 PT-RS ports in the uplink are supported.

In the related art, whether the uplink transmits the PT-RS is configured through a high-layer parameter (DMRS-UplinkConfig, PT-RS-UplinkConfig).

For example, the UE is configured PHASETRACKINGRS in the higher layer parameters DMRS-UplinkConfig to configure the uplink transmission PT-RS. If PHASETRACKINGRS configured for the UE is not included in the higher layer parameter DMRS-UplinkConfig, PT-RS is not transmitted in the uplink transmission of the terminal.

Wherein, the PT-RS port and the DMRS port have an association relation. Indication is performed by a PT-RS-DMRS association indication field (PT-RS-DMRS association indication field).

In an example, if a higher layer parameter configures a parameter UL-PT-RS-present to a UE and the number of PT-RS ports is 1 or 2, one DMRS port is indicated to be associated with this PT-RS port through a PT-RS-DMRS association indication field in UL DCI 0_1/0_2. The specific association is shown in the following table:

Table 17 shows association relations between PT-RS ports and DMRS ports for the upstream PT-RS port 0, for the PT-RS single port case.

Value	DMRS port
0	1 ^stscheduled DMRS port
1	2 ^ndscheduled DMRS port
2	3 ^rdscheduled DMRS port
3	4 ^thscheduled DMRS port

TABLE 17

Table 18 shows association relations between PT-RS ports and DMRS ports for the upstream PT-RS port 0, for the PT-RS two port case.

TABLE 18

Wherein the maximum port number of the PT-RS is obtained by configuring maxNrofPorts in the high-level parameter PT-RS-UplinkConfig as 'n 2'. If the maximum PT-RS port number indicated by n2 is 2, the network device is actually divided into two groups through the DMRS ports corresponding to the SRS resources, and the association relation indication of each PT-RS port is respectively confirmed.

In the related art, according TO the mapping relation between the transmission signal stream and the plurality of TRP/Panel/TCI/TO, the transmission mode of the coordinated multi-point transmission technology includes codebook-based transmission and non-codebook-based transmission. Among these, codebook-based transmissions may include full coherence (full coherence), partial coherence (Partial coherence), and incoherence (Non coherence J).

For codebook-based transmission, if the codebook is full sphere transmission, the bit overhead indicated by the association relationship between DMRS and PT-RS depends on the number of transmission antennas and TRI. If the Partial/non-Partial transmission is performed, if the indicated maximum PT-RS port number is 1, one port transmission is required and corresponds to one Sounding reference signal (Sounding REFERENCE SIGNAL, SRS) resource. If the indicated maximum PT-RS port number is 2, the actual transmitted UL PT-RS port number and the associated layer number are determined through a precoding matrix (Transmission Precoding matrix indicator, TPMI) and a transmission layer number TRI indication. If the number of layers indicated by the TPMI in one SRS port group is 1 layer or 2 layers, one PT-RS port needs to be scheduled, otherwise 2 PT-RS ports need to be scheduled. 2 PT-RS ports need to be scheduled for 3-layer uplink transmission.

For uplink transmission based on a non-codebook, if the configured SRS resources contain PT-RS ports with the same index, the resources share one PT-RS port, and the corresponding UL DMRS is also associated with the same PT-RS port. That is, the number of UL PT-RS ports to be scheduled is determined based on the SRI.

In the uplink enhancement of R18, consider how uplink simultaneous transmission through multiple TRP/Panel/TCI/TO is used TO support higher throughput and more reliable transmission performance.

In order to support a single-DCI based multi-Panel uplink simultaneous transmission scheme, when a back-off to single-TRP transmission under STxMP transmission configuration needs to be considered, different association mapping indication schemes between PT-RS and DMRS need to be considered under different transmission multiplexing schemes, so as to support accurate estimation of CPE under the condition of multiple panels of a terminal. Although the related art, the maximum number of ports of the PT-RS supported by the terminal is configured in the radio resource control (Radio Resource Control, RRC) configuration. However, there are some drawbacks in this manner, such as falling back to STRP transmission in STxMP transmission configuration, and not being able to accurately transmit PT-RS in a single Panel. If only the total maximum PT-RS port number sent by the terminal is configured, for example, 2, it is unclear whether the maximum PT-RS port number corresponding to the sending Panel used for corresponding STRP transmission is 1 or 2, and the problem that the association relationship between the PT-RS and the DMRS can not be indicated by the terminal is caused. And, it is an insufficient specific PT-RS configuration enhancement method, so as to be used for accurately transmitting PT-RS under a single Panel.

In view of this, the embodiments of the present disclosure provide a reference signal configuration method, which is used for configuring the maximum PT-RS port number for a Panel, so that in STxMP transmission, the maximum PT-RS port number corresponding to and supported for PT-RS transmission using a single Panel or multiple panels can be determined.

Fig. 5 is a flowchart illustrating a reference signal configuration method according to an exemplary embodiment. As shown in fig. 5, the reference signal configuration method is applied to a network device, and includes the following steps.

In step S11, PT-RS configuration information is sent to the terminal in response to determining that the terminal performs multi-Panel simultaneous transmission STxMP of PUSCH based on the S-DCI scheduling method.

In the embodiment of the disclosure, the PT-RS configuration information is used for configuring the maximum PT-RS port number supported by the terminal corresponding to PT-RS transmission by using a single Panel or multiple panels in STxMP transmission.

In the embodiment of the disclosure, in response to the terminal performing multi-Panel simultaneous transmission STxMP of the PUSCH based on the S-DCI scheduling mode, the network device sends PT-RS configuration information to the terminal. The PT-RS configuration information is used for configuring the maximum PT-RS port number supported by the terminal corresponding to the PT-RS transmission by using a single Panel or multiple Panels in STxMP transmission. Therefore, the configuration of the maximum PT-RS port number at the Panel level is realized, so that the maximum PT-RS port number supported by the single Panel or multiple panels for PT-RS transmission can be determined in STxMP transmission.

In one implementation manner provided by the embodiment of the present disclosure, the configuration enhancement for the maximum PT-RS port number may be a configuration for increasing the maximum PT-RS port number corresponding to the per Panel. In an example, in the current RRC configuration, the port configuration of the per Panel is added, for example, taking the case that there are two panels, the maximum PT-RS port number corresponding to each Panel is configured in the configuration information, specifically, the port configuration information corresponding to each Panel is added in the current RRC configuration information, and the configuration information is panelMaxNrofPorts and panelMaxNrofPorts respectively.

Wherein panelMaxNrofPorts corresponds TO a first TRP/Panel/TCI/TO and panelMaxNrofPorts corresponds TO a second TRP/Panel/TCI/TO. Adding the parameter configuration of Panel1 and Panel2 in the IE parameter list, as follows:

{……

panelMaxNrofPorts1 ENUMERATED{n1,n2},

panelMaxNrofPorts2 ENUMERATED{n1,n2},

……}

The ENUMERATED function is used for forming an index sequence by the PT-RS port number supported by each Panel, and simultaneously acquiring each Panel index and value by ENUMERATED to acquire the maximum PT-RS port number supported by each Panel.

In one implementation of the disclosed embodiment, the PT-RS configuration information is configured to configure each Panel to respectively correspond to a maximum number of PT-RS ports supported by PT-RS transmission.

In another implementation manner of the embodiment of the present disclosure, the PT-RS configuration information is used to configure a maximum number of PT-RS ports supported by the terminal for PT-RS transmission in STxMP transmissions. It can be understood that the maximum PT-RS port number of the terminal level is configured.

In still another implementation manner of the embodiment of the present disclosure, the PT-RS configuration information is configured to respectively correspond to a maximum number of PT-RS ports supported by PT-RS transmission by each Panel and a maximum number of PT-RS ports supported by the terminal for PT-RS transmission in STxMP transmissions. It can be understood that the PT-RS configuration information is used to configure the maximum PT-RS port number of the Panel level and the maximum PT-RS port number of the terminal level.

In the embodiment of the disclosure, the terminal performs maximum PT-RS port number supported by PT-RS transmission in STxMP transmission, and determines based on the maximum PT-RS port number supported by the terminal and/or the maximum PT-RS port number supported by a single Panel.

Fig. 6 is a flowchart illustrating a reference signal configuration method according to an exemplary embodiment. As shown in fig. 6, the following steps are included.

In step S21, the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in STxMP transmissions 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.

In the embodiment of the disclosure, the single Panel and the maximum PT-RS port number supported by the terminal are determined through RRC configuration information.

For example, for determining the maximum PT-RS port number supported by a single Panel, based on panelMaxNrofPorts added in the RRC configuration information, the configuration of the maximum PT-RS port number supported by each Panel is acquired to determine the maximum PT-RS port number supported by a single Panel.

For example, for determining the maximum number of PT-RS ports supported by a terminal: and determining the maximum PT-RS port number supported by the terminal through the current RRC configuration information.

In the embodiment of the disclosure, the number of maximum PT-RS ports supported by the terminal and/or the number of maximum PT-RS ports supported by a single Panel are determined according to the above manner, and based on the number of maximum PT-RS ports supported by the terminal and/or the number of maximum PT-RS ports supported by a single Panel, the number of maximum PT-RS ports supported by the terminal for PT-RS transmission in STxMP transmission is determined, so that the number of maximum PT-RS ports supported by the terminal for PT-RS transmission in STxMP transmission is consistent with the number of maximum PT-RS ports supported by the Panel for PT-RS transmission in STxMP transmission, thereby realizing consistent understanding of configuration between the Panel and the terminal when PT-RS transmission is performed in STxMP transmission.

In one implementation manner of the embodiment of the present disclosure, if the current transmission is rolled back to an STRP transmission state, that is, if the terminal performs PUSCH transmission from a single Panel to a single TRP, the maximum PT-RS port number corresponding to the transmission Panel indicated under the STRP should be configured according to the network device for the maximum PT-RS port number of the Panel.

The indication domain can be indicated to determine the Panel used by the terminal in the state of backing off to STRP transmission through SRS resource set indication in DCI under S-DCI. Wherein, the SRS resource set indication domain is used for indicating the dynamic switching of single TRP/Panel/TCI/TO and multiple TRP/Panel/TCI/TO, and can indicate which TRP/Panel/TCI/TO is specifically used under the transmission of single TRP/Panel/TCI/TO through different code points.

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

Fig. 7 is a flowchart illustrating a method of determining a single Panel used by a terminal for PUSCH transmission from a single Panel to a single TRP, according to an exemplary embodiment. As shown in fig. 7, the following steps are included.

In step S31, it is determined that the terminal is in STxMP transmission states.

In step S32, a single Panel used by the terminal to transmit PUSCH from a single Panel to a single TRP is determined based on the SRS resource set indication field.

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

In the embodiment of the disclosure, the terminal performs the maximum PT-RS port number supported by the terminal configured by the configuration information and the maximum PT-RS port number supported by PT-RS transmission in the PUSCH transmission from the single Panel to the single TRP, so that the maximum PT-RS port number supported by PT-RS transmission on the single Panel can be accurately determined for the maximum PT-RS port number supported by the terminal corresponding to the PT-RS transmission by using the single Panel, and further, when the terminal returns to STRP transmission under STxMP transmission configuration, the maximum PT-RS port number supported by PT-RS transmission on the single Panel can be accurately determined.

In one implementation manner of the reference signal configuration method provided by the embodiment of the present disclosure, in response to a terminal transmitting at STxMP, based on an SRS resource set indication field, determining multiple Panel used by the terminal to transmit PUSCH with multiple TRPs from multiple Panel, where the maximum PT-RS port number supported by the multiple Panel is the maximum PT-RS port number supported by the terminal configured by the configuration information.

Fig. 8 is a flowchart illustrating a method of determining multiple Panel used by a terminal for PUSCH transmission from multiple panels to multiple TRPs, according to an exemplary embodiment. As shown in fig. 8, the following steps are included.

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

In step S42, based on the SRS resource set indication field, the multi-Panel used by the terminal to transmit PUSCH from the multi-Panel to the multi-TRP is determined.

In step S43, the maximum number of PT-RS ports supported by the terminal configured by the Panel configuration information is used as the maximum number of PT-RS ports supported by the multi-Panel.

In the embodiment of the disclosure, the maximum PT-RS port number supported by the terminal for PT-RS transmission by the multiple Panel used for PUSCH transmission from the multiple Panel to the multiple TRP is the maximum PT-RS port number supported by the terminal configured by the configuration information, so that the maximum PT-RS port number supported by the terminal for PT-RS transmission by the multiple Panel can be accurately determined.

In the embodiment of the disclosure, in PUSCH transmission from a single Panel to a single TRP, the number of PT-RS ports actually transmitted by the single Panel is determined based on PUSCH transmission flow number in PUSCH transmission, antenna port grouping condition corresponding to the transmission flow number, and the maximum PT-RS port number supported by the Panel.

By the method, the PUSCH transmission stream number in the PUSCH transmission and the antenna port grouping situation corresponding to the transmission stream number are determined, and the PT-RS port number actually transmitted by the single Panel in the PUSCH transmission from the single Panel to the single TRP is determined according to the maximum PT-RS port number supported by the Panel.

Based on the configuration method of the maximum port number of the PT-RS related to the embodiment of the disclosure, the understanding consistency of the configuration between the Panel and the terminal can be realized when the PT-RS is sent in STxMP transmission. The effect of agreement of understanding of the configuration between the Panel and the terminal will be described below in connection with practical applications.

In the implementation of configuring the maximum number of PT-RS ports supported by the terminal in the conventional technology, that is, only configuring the maximum number of PT-RS ports of the per UE, for example, configuring to 2, when the UE rolls back to a certain Panel, the possible situations are:

1) The processing can only be performed according to the default configuration that the maximum port number of the PT-RS is 2. However, if the actual capacity of the Panel is the maximum PT-RS single port, for example, if all antenna ports on the Panel are all coherent, the terminal reports according to the PT-RS single port capacity, but the network device will understand that the terminal reports according to the PT-RS of 2 ports, so that the understanding of the terminal and the base station will be inconsistent. Later protocols may also be extended to take into account the 4-port PT-RS, so that the capability difference of different Panel is greater in PT-RS configuration where per UE is the maximum 4-port.

2) For the case of grouping the antenna ports on the Panel, however, the actual network configuration needs to limit PT-RS overhead or is based on some considerations of simplified implementation, the maximum 1 PT-RS port is directly configured, and then the indication is performed according to the association relation of the single port PT-RS. For example, in the transmission at STXMP, even if the per UE configures a maximum of 2 PT-RS ports, the network may wish to configure a case where only 1 PT-RS port is supported at most on each Panel that can actually support 2 ports, but existing signaling cannot be supported.

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

In an exemplary embodiment, taking the case that the current STxMP transmission is backed off to the single TRP transmission state, the maximum port number supported by the TRP for transmitting the PT-RS is 2, and backing off to the single Panel for transmitting the PT-RS is taken as an example. If the number of the ports capable of supporting sending PT-RS on the single Panel is 2, configuring the maximum PT-RS port number supported by TRP according to the maximum port number capable of supporting PT-RS on the single Panel as configuration information, and reporting the TRP according to the maximum PT-RS port number supported by sending PT-RS as 2. If the number of ports of the single Panel actually transmitting PT-RS is 1 (for example, if all antenna ports are fully coherent), the TRP is configured according to the maximum number of PT-RS ports supported by PT-RS transmission being 1 as configuration information.

In another exemplary embodiment, taking the case that the current STxMP transmission is backed off to the single TRP transmission state, the maximum number of ports supported by TRP for transmitting PT-RS is 2, and backing off to the single Panel for transmitting PT-RS, if the actual network configuration needs to limit PT-RS overhead or some consideration based on simplified implementation, the maximum number of supported PT-RS ports for transmitting is input in the configuration information for configuration with 1. According to the configuration information, the maximum PT-RS port number supported by the single Panel configuration for PT-RS transmission is 1, and the maximum PT-RS port number supported by the TRP configuration for PT-RS transmission is 1, so that the maximum PT-RS port number supported by the PT-RS transmission on the TRP and the single Panel is consistent.

It may be that in future technical development, the transmission may be extended to STxMP, and even if the per UE configures maximum 4 PT-RS ports, the network may wish to configure a case that each Panel capable of actually supporting 2 ports supports only at most 1 PT-RS port, so the method for configuring the maximum PT-RS port number of the per Panel provided by the embodiment of the present disclosure may enable the sending Panel used by the corresponding STRP transmission to accurately determine the supported maximum PT-RS port number.

It may be understood that the transmission modes of PUSCH transmission referred to in the above embodiments of the present disclosure include a PUSCH transmission mode based on scheduling, or a type1 transmission mode based on a PUSCH without scheduling, or a type 2 transmission mode based on a PUSCH without scheduling. That is, the reference signal configuration method provided by the embodiment of the present disclosure is applicable to a scheduled PUSCH transmission mode, a type1 transmission mode based on a non-scheduled PUSCH, and a type 2 transmission mode based on a non-scheduled PUSCH.

Based on the same conception, the embodiment of the disclosure also provides a reference signal configuration method applied to the terminal. Fig. 9 is a flowchart illustrating a reference signal configuration method according to an exemplary embodiment. As shown in fig. 9, the reference signal configuration method is applied to a terminal, and includes the following steps.

In step S51, in response to the terminal performing the multi-Panel simultaneous transmission STxMP of the PUSCH based on the S-DCI scheduling method, the receiving network device sends PT-RS configuration information.

In the embodiment of the disclosure, the PT-RS configuration information is used for configuring the maximum PT-RS port number supported by the terminal corresponding to PT-RS transmission by using a single Panel or multiple panels in STxMP transmission. In the embodiment of the disclosure, in response to the terminal performing multi-Panel simultaneous transmission STxMP of the PUSCH based on the S-DCI scheduling mode, the network device sends PT-RS configuration information to the terminal. The PT-RS configuration information is used for configuring the maximum PT-RS port number supported by the terminal corresponding to the PT-RS transmission by using a single Panel or multiple Panels in STxMP transmission. Therefore, the configuration of the maximum PT-RS port number at the Panel level is realized, so that the maximum PT-RS port number supported by the single Panel or multiple panels for PT-RS transmission can be determined in STxMP transmission.

In one embodiment, the T-RS configuration information is used to configure each single Panel to respectively correspond to the maximum number of PT-RS ports supported by PT-RS transmission.

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 transmissions. It can be understood that the maximum PT-RS port number of the terminal level is configured.

Fig. 10 is a flowchart illustrating a reference signal configuration method according to an exemplary embodiment. As shown in fig. 10, the following steps are included.

In step S61, the maximum number of PT-RS ports supported by the terminal for PT-RS transmission in STxMP transmissions 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.

Fig. 11 is a flowchart illustrating a method of determining a single Panel used by a terminal for PUSCH transmission from a single Panel to a single TRP, according to an exemplary embodiment. As shown in fig. 11, the following steps are included.

In step S71, it is determined that the terminal is in STxMP transmission states.

In step S72, a single Panel used by the terminal to transmit PUSCH from a single Panel to a single TRP is determined based on the SRS resource set indication field.

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

Fig. 12 is a flowchart illustrating a method of determining multiple Panel used by a terminal for PUSCH transmission from multiple panels to multiple TRPs, according to an exemplary embodiment. As shown in fig. 12, the following steps are included.

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

In step S82, based on the SRS resource set indication field, a multi-Panel used by the terminal to transmit PUSCH from the multi-Panel to the multi-TRP is determined.

In step S83, the maximum number of PT-RS ports supported by the terminal configured by the multi-Panel configuration information is used as the maximum number of PT-RS ports supported by the multi-Panel.

The method is used for determining the number of PUSCH transmission streams in the PUSCH transmission and the antenna port grouping situation corresponding to the number of the transmission streams, and then determining the number of PT-RS ports actually transmitted by a single Panel in the PUSCH transmission from the single Panel to the single TRP according to the maximum PT-RS port number supported by the Panel.

It should be noted that, in the embodiment of the present disclosure, the reference signal configuration method applied to the terminal is similar to the execution process of the reference signal configuration method applied to the network device, and the description of the related embodiments may be referred to specifically, and will not be repeated here.

The reference signal configuration method provided by the present disclosure is suitable for a process of implementing PT-RS configuration enhancement by interaction between a terminal and a network device, and in a method of implementing PT-RS configuration enhancement by interaction between a terminal and a network device, the terminal and the network device respectively have related functions in implementing the reference signal configuration method related to the above embodiment, so that details are not repeated herein.

It should be understood by those skilled in the art that the various implementations/embodiments of the present disclosure may be used in combination with the foregoing embodiments or may be used independently. Whether used alone or in combination with the previous embodiments, the principles of implementation are similar. In the practice of the present disclosure, some of the examples are described in terms of implementations that are used together. Of course, those skilled in the art will appreciate that such illustration is not limiting of the disclosed embodiments.

Based on the same conception, the embodiment of the disclosure also provides a reference signal configuration device.

It will be appreciated that, in order to implement the above-described functions, the reference signal configuration apparatus provided in the embodiments of the present disclosure includes corresponding hardware structures and/or software modules that perform the respective functions. The disclosed embodiments may be implemented in hardware or a combination of hardware and computer software, in combination with the various example elements and algorithm steps disclosed in the embodiments of the disclosure. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Those skilled in the art may implement the described functionality using different approaches for each particular application, but such implementation is not to be considered as beyond the scope of the embodiments of the present disclosure.

Fig. 13 is a block diagram of a reference signal configuration apparatus according to an exemplary embodiment. Referring to fig. 13, the reference signal configuring apparatus 100 includes a transmitting unit 101.

A sending unit 101, configured to send phase PT-RS configuration information to a terminal in response to determining that the terminal performs multi-antenna Panel simultaneous transmission STxMP of a physical uplink shared channel PUSCH based on an S-DCI scheduling manner;

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 transmissions.

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

and determining the maximum PT-RS port number supported by the terminal for PT-RS transmission in STxMP transmission based on the maximum PT-RS port number supported by the terminal and/or the maximum PT-RS port number supported by the single Panel.

In one embodiment, the transmitting unit 101 determines a single Panel used by the terminal to transmit PUSCH from a single Panel to a single TRP based on the SRS resource set indication field in response to the terminal in STxMP transmission;

The terminal uses the single Panel to carry out the maximum PT-RS port number supported by PT-RS transmission as the maximum PT-RS port number supported by the single Panel configured in the configuration information.

In one embodiment, the transmitting unit 101 determines, in response to the terminal determining, based on the SRS resource set indication field in STxMP transmission, multiple Panel used by the terminal to transmit PUSCH of multiple TRPs from multiple Panel, a maximum PT-RS port number supported by the multiple Panel being a maximum PT-RS port number supported by the terminal configured by the configuration information.

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

In one embodiment, the transmission mode of PUSCH transmission includes a PUSCH transmission mode based on scheduling, or a type 1 transmission mode based on a scheduling-free PUSCH, or a type 2 transmission mode based on a scheduling-free PUSCH.

Fig. 14 is a block diagram of a reference signal configuration apparatus according to an exemplary embodiment. Referring to fig. 14, the reference signal configuring apparatus 200 includes a receiving unit 201.

A receiving unit 201, configured to receive, in response to a multi-antenna Panel simultaneous transmission STxMP of a physical uplink shared channel PUSCH by a terminal based on an S-DCI scheduling manner, phase PT-RS configuration information sent by a network device;

In one embodiment, the receiving unit 201 is further configured to: and determining the maximum PT-RS port number supported by the terminal for PT-RS transmission in STxMP transmission based on the maximum PT-RS port number supported by the terminal and/or the maximum PT-RS port number supported by the single Panel.

In one embodiment, the receiving unit 201 determines a single Panel used by the terminal to transmit from the single Panel to the PUSCH of the single TRP based on the SRS resource set indication field in response to the terminal transmitting at STxMP;

The terminal uses the maximum PT-RS port number supported by the PT-RS transmission by the single Panel as the maximum PT-RS port number supported by the PT-RS transmission by the single Panel in the configuration information.

In one embodiment, the receiving unit 201 determines, in response to the terminal transmitting at STxMP, based on the SRS resource set indication field, multiple Panel used by the terminal to transmit PUSCH of multiple TRPs from multiple Panel, where the maximum PT-RS port number supported by the multiple Panel is the maximum PT-RS port number supported by the terminal configured by the configuration information.

The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.

Fig. 15 is a block diagram illustrating a reference signal configuration apparatus 300 according to an example embodiment. For example, apparatus 300 may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, exercise device, personal digital assistant, or the like.

Referring to fig. 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.

The processing component 302 generally controls overall operation of the apparatus 300, such as operations associated with display, telephone calls, data communications, camera operations, 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 methods described above. Further, the processing component 302 can include one or more modules that facilitate interactions 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.

Memory 304 is configured to store various types of data to support operations at apparatus 300. Examples of such data include instructions for any application or method operating on the device 300, contact data, phonebook data, messages, pictures, videos, and the like. The memory 304 may be implemented by any type or combination of volatile or nonvolatile memory devices 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 or optical disk.

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

The multimedia component 308 includes a screen between the device 300 and the user that provides an output interface. 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 may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 308 includes a front-facing camera and/or a rear-facing camera. The front-facing camera and/or the rear-facing camera may receive external multimedia data when the apparatus 300 is in an operational mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 310 is configured to output and/or input audio signals. For example, the audio component 310 includes a Microphone (MIC) configured to receive external audio signals when the device 300 is in an operational 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, audio component 310 further comprises a speaker for outputting audio signals.

The I/O interface 312 provides an interface between the processing component 302 and peripheral interface modules, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 314 includes one or more sensors for providing status assessment of various aspects of the apparatus 300. For example, the sensor assembly 314 may detect the on/off state of the device 300, the relative positioning of the components, such as the display and keypad of the device 300, the sensor assembly 314 may also detect a change in 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 a change in temperature of the device 300. The sensor assembly 314 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. The sensor assembly 314 may also include a light 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 acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 316 is configured to facilitate communication between the apparatus 300 and other devices, either wired or wireless. The device 300 may access a wireless network based on a communication standard, such as WiFi,2G or 3G, or a combination thereof. In one exemplary embodiment, the communication component 316 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 316 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

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 elements for executing the methods described above.

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

Fig. 16 is a block diagram illustrating an apparatus 1100 for reference signal configuration, according to an example embodiment. For example, apparatus 1100 may be provided as a server. Referring to FIG. 16, apparatus 1100 includes a processing component 1122 that further includes one or more processors and memory resources, represented by memory 1132, for storing instructions, such as application programs, executable by processing component 1122. The application programs stored in memory 1132 may include one or more modules each corresponding to a set of instructions. Further, processing component 1122 is configured to execute instructions to perform the methods described above.

The apparatus 1100 may also include a power component 1126 configured to perform power management of the apparatus 1100, a wired or wireless network interface 1150 configured to connect the apparatus 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, mac OS XTM, unixTM, linuxTM, freeBSDTM, or the like.

It is further understood that the term "plurality" in this disclosure means two or more, and other adjectives are similar thereto. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. The singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It is further understood that the terms "first," "second," and the like are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the expressions "first", "second", etc. may be used entirely interchangeably. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.

It will be further understood that although operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous.

It should be noted that, the reference signal configuration apparatus 100 and the respective modules/units involved in the reference signal configuration apparatus 200 according to the embodiments of the present disclosure are merely illustrative, and are not limited thereto. For example, the reference signal configuring apparatus 100 in the embodiment of the present disclosure may further include a receiving unit and/or a processing unit. The reference signal configuring apparatus 200 may further comprise a transmitting unit and/or a processing unit. The reference signal configuration apparatus 100 and the reference signal configuration apparatus 200 may interact with each other, or may interact with other network element devices.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

A reference signal configuration method, applied to a network device, the method comprising:

Responding to STxMP that the terminal carries out the simultaneous transmission of the multi-antenna Panel of the physical uplink shared channel PUSCH based on a single downlink control information DCI scheduling mode, and sending phase tracking reference signal PT-RS configuration information to the terminal;

the PT-RS configuration information is used for configuring the maximum PT-RS port number supported by the terminal corresponding to the PT-RS transmission by using a single Panel or multiple Panels in STxMP transmission.
The method of claim 1 wherein the PT-RS configuration information is used to configure each single Panel to correspond to a maximum number of PT-RS ports supported by PT-RS transmissions, respectively.
The method of claim 1 or 2, wherein the PT-RS configuration information is further used to configure a maximum number of PT-RS ports supported by the terminal for PT-RS transmission in the STxMP transmissions.
A method according to claim 3, characterized in that the method further comprises:

And determining the maximum PT-RS port number supported by the terminal for PT-RS transmission in STxMP transmission based on the maximum PT-RS port number supported by the terminal and/or the maximum PT-RS port number supported by a single Panel.
The method of claim 4, wherein the single Panel used by the terminal for PUSCH transmission from a single Panel to a single TRP is determined based on SRS resource set indication field in response to the terminal transmitting at the STxMP;

and the maximum PT-RS port number supported by the terminal for PT-RS transmission by using the single Panel is the maximum PT-RS port number supported by the PT-RS transmission by using the single Panel configured in the configuration information.
The method of claim 4, wherein the determining, based on SRS resource set indication field, multiple Panel used by the terminal for PUSCH transmission from multiple Panel to multiple TRP is performed in response to the terminal transmitting at the STxMP, the maximum number of PT-RS ports supported by the multiple Panel being the maximum number of PT-RS ports supported by the terminal configured by the configuration information.
The method according to any one of claims 1 to 6, wherein the number of PT-RS ports actually transmitted by a single Panel in PUSCH transmission from the single Panel to the single TRP of the terminal is determined based on a PUSCH transmission stream number in the PUSCH transmission, an antenna port grouping condition corresponding to the transmission stream number, and a maximum PT-RS port number supported by the Panel.
The method according to any of claims 1 to 7, wherein the transmission scheme of PUSCH transmission comprises a scheduled PUSCH transmission scheme based on, or a type 1 transmission scheme based on a scheduling-free PUSCH, or a type 2 transmission scheme based on a scheduling-free PUSCH.
A reference signal configuration method, applied to a terminal, the method comprising:

responding to the multi-antenna Panel simultaneous transmission STxMP of the physical uplink shared channel PUSCH by the terminal based on a single downlink control information DCI scheduling mode, and receiving phase tracking reference signal PT-RS configuration information sent by network equipment;

the PT-RS configuration information is used for configuring the maximum PT-RS port number supported by the terminal corresponding to the PT-RS transmission by using a single Panel or multiple Panels in STxMP transmission.
The method of claim 9 wherein the PT-RS configuration information is used to configure each single Panel to correspond to a maximum number of PT-RS ports supported by PT-RS transmissions, respectively.
The method of claim 9 or 10, wherein the PT-RS configuration information is further used to configure a maximum number of PT-RS ports supported by the terminal for PT-RS transmission in the STxMP transmissions.
The method of claim 11, wherein the method further comprises:

And determining the maximum PT-RS port number supported by the terminal for PT-RS transmission in STxMP transmission based on the maximum PT-RS port number supported by the terminal and/or the maximum PT-RS port number supported by a single Panel.
The method of claim 12, wherein a single Panel used by the terminal for PUSCH transmission from a single Panel to a single TRP is determined based on SRS resource set indication field in response to the terminal transmitting at the STxMP;

And the maximum PT-RS port number supported by the terminal for carrying out PT-RS transmission by using the single Panel is the maximum PT-RS port number supported by carrying out PT-RS transmission by using the single Panel in the configuration information.
The method of claim 12, wherein the determining, based on SRS resource set indication field, of multiple Panel used by the terminal for PUSCH transmission from multiple Panel to multiple TRP is performed in response to the terminal transmitting at the STxMP, wherein a maximum number of PT-RS ports supported by the multiple Panel is a maximum number of PT-RS ports supported by the terminal configured by the configuration information.
The method according to any one of claims 9 to 14, wherein the number of PT-RS ports actually transmitted by a single Panel in PUSCH transmission from the single Panel to the single TRP of the terminal is determined based on a combination of a PUSCH transmission stream number in the PUSCH transmission, an antenna port grouping condition corresponding to the transmission stream number, and a maximum number of PT-RS ports supported by the Panel.
The method according to any of claims 9 to 15, wherein the transmission scheme of PUSCH transmission comprises a scheduled PUSCH transmission scheme based on, or a type 1 transmission scheme based on a scheduling-free PUSCH, or a type 2 transmission scheme based on a scheduling-free PUSCH.
A reference signal configuration apparatus for use with a network device, the apparatus comprising:

A sending unit, configured to send phase tracking reference signal PT-RS configuration information to a terminal in response to determining that the terminal performs multi-antenna Panel simultaneous transmission STxMP of a physical uplink shared channel PUSCH based on a single downlink control information DCI scheduling mode;

the PT-RS configuration information is used for configuring the maximum PT-RS port number supported by the terminal corresponding to the PT-RS transmission by using a single Panel or multiple Panels in STxMP transmission.
A reference signal configuration apparatus, applied to a terminal, comprising:

a receiving unit, configured to respond to the simultaneous transmission STxMP of the multi-antenna Panel of the physical uplink shared channel PUSCH by the terminal based on a single downlink control information DCI scheduling mode, and receive phase tracking reference signal PT-RS configuration information sent by a network device;

the PT-RS configuration information is used for configuring the maximum PT-RS port number supported by the terminal corresponding to the PT-RS transmission by using a single Panel or multiple Panels in STxMP transmission.
A reference signal configuration apparatus, comprising:

A processor;

A memory for storing processor-executable instructions;

Wherein the processor is configured to: performing the method of any one of claims 1 to 8 or performing the method of any one of claims 8 to 16.
A storage medium having instructions stored therein which, when executed by a processor of a network device, enable the network device to perform the method of any one of claims 1 to 8 or to perform the method of any one of claims 8 to 16.