Reference signal configuration method and device, equipment and storage medium

Abstract

The application of the invention is a divisional application of CN202180002078.5. The invention discloses a reference signal configuration method and device, equipment and a storage medium, and relates to the field of mobile communication. The method comprises: a terminal device receives first information sent by a network device, the first information being used for indicating a port association relationship corresponding to two transmission receiving points TRP, and the port association relationship being used for reflecting an association relationship between a first reference signal port and a second reference signal port. The association relationship between the first reference signal port and the second reference signal port can be configured for the plurality of TRPs through the first information, the first reference signal can be a PT-RS, and the second reference signal can be a DMRS. According to the port incidence relation configured for the multiple TRPs, balance between DCI overhead and PT-RS performance can be achieved to a certain degree, more scheduling flexibility is provided for a network, and it is guaranteed that the overall system performance is optimal.

Description

[0001] This application is a divisional application of the invention patent application with application number CN202180002078.5 filed on June 30, 2021, and invention name “Reference signal configuration method, device, equipment and storage medium”. Technical Field

[0002] The present application relates to the field of mobile communications, and in particular to a reference signal configuration method, device, equipment and storage medium. Background Art

[0003] The terminal device sends a Phase Tracking Reference Signal (PT-RS) to the network device. The network device estimates the common phase error (CPE) of the carrier based on the PT-RS and compensates for the CPE, thereby improving the quality of service. Each PT-RS port is associated with a demodulation reference signal (DMRS) port. By indicating the association between the PT-RS port and the DMRS port of the network device to the terminal device, the network device can receive the PT-RS sent by the terminal device through the DMRS port associated with the PT-RS port.

[0004] The 3rd Generation Partnership Project (3GPP) proposed a repeated transmission technology based on multiple Transmit-Receive Points (TRP) in the 5G New Radio (NR) system. A network device can transmit messages based on multiple TRPs.

[0005] In the scenario of multiple TRPs, the configuration of PT-RS needs further discussion and research. Summary of the invention

[0006] The embodiments of the present application provide a reference signal configuration method, apparatus, device and storage medium, which can realize the association relationship between PT-RS ports and DMRS ports configured for multiple TRPs. The technical solution is as follows:

[0007] According to one aspect of the present application, a method for configuring a reference signal is provided, the method comprising:

[0008] The terminal device receives first information sent by the network device, where the first information is used to indicate a port association relationship corresponding to two TRPs, and the port association relationship is used to reflect an association relationship between a first reference signal port and a second reference signal port.

[0009] According to another aspect of the present application, a method for configuring a reference signal is provided, the method comprising:

[0010] The network device sends first information to the terminal device, where the first information is used to indicate a port association relationship corresponding to two TRPs, and the port association relationship is used to reflect an association relationship between a first reference signal port and a second reference signal port.

[0011] According to another aspect of the present application, a device for configuring a reference signal is provided, the device comprising:

[0012] The receiving module is used to receive first information sent by a network device, where the first information is used to indicate a port association relationship corresponding to two TRPs, and the port association relationship is used to reflect an association relationship between a first reference signal port and a second reference signal port.

[0013] In an optional design, the two TRPs include a first TRP and a second TRP, and the first information includes a first indication field and a second indication field;

[0014] The first indication field is used to indicate a first port association relationship corresponding to the first TRP;

[0015] The second indication field is used to indicate the second port association relationship corresponding to the second TRP.

[0016] In an optional design, the device further includes:

[0017] A sending module is used to report terminal capabilities to the network device, where the terminal capabilities are used to indicate whether the terminal device supports the capabilities configured with the second indication domain.

[0018] In an optional design, the first information is sent by the network device when the terminal device supports the capability of being configured with the second indication field.

[0019] In an optional design, the receiving module is used to receive second information sent by the network device, and the second information is used to indicate that the first information includes two indication fields.

[0020] In an optional design, the two TRPs include a first TRP and a second TRP, the first information includes a third indication field, and the third indication field is used to indicate a port correspondence relationship corresponding to the two TRPs using the same indication field;

[0021] The device also includes:

[0022] A determination module is used to determine a first port association relationship corresponding to the first TRP and a second port association relationship corresponding to the second TRP according to the third indication field.

[0023] In an optional design, the determining module is used to:

[0024] Determine the port association relationship indicated by the third indication field as a first port association relationship corresponding to the first TRP and a second port association relationship corresponding to the second TRP;

[0025] The first port association relationship is the same as the second port association relationship.

[0026] In an optional design, the determining module is used to:

[0027] Determine the port association relationship indicated by the third indication field as the first port association relationship corresponding to the first TRP;

[0028] Determine, according to the first port association relationship and the first predefined relationship, a second port association relationship corresponding to the second TRP;

[0029] The first port association relationship and the second port association relationship are different.

[0030] In an optional design, the third indication field includes a first field and a second field; and the determining module is used to:

[0031] Determine, according to the first field, a first port association relationship corresponding to the first TRP, and determine, according to the second field, a second port association relationship corresponding to the second TRP;

[0032] or,

[0033] According to the first field and the second field, a first port association relationship corresponding to the first TRP is determined, and according to the first field and the second field, a second port association relationship corresponding to the second TRP is determined.

[0034] In an optional design, the number of first reference signal ports corresponding to the first TRP and the second TRP is one each, and the second reference signal port includes a first group of second reference signal ports and a second group of second reference signal ports; and the determining module is used to:

[0035] Determine, according to the first field, an association relationship between a first reference signal port corresponding to the first TRP and a second reference signal port in the first group of second reference signal ports;

[0036] Determine, according to the second field, an association relationship between a first reference signal port corresponding to the second TRP and a second reference signal port in the second group of second reference signal ports.

[0037] In an optional design, the first reference signal ports corresponding to the first TRP and the second TRP both include a first reference signal port 0 and a first reference signal port 1, and the second reference signal ports include a first group of second reference signal ports and a second group of second reference signal ports; and the determining module is used to:

[0038] Determine, according to the first field, an association relationship between a first reference signal port 0 corresponding to the first TRP and a second reference signal port in the first group of second reference signal ports, and determine, according to the second field, an association relationship between a first reference signal port 1 corresponding to the first TRP and a second reference signal port in the second group of second reference signal ports;

[0039] According to the first field, determine the association relationship between the first reference signal port 0 corresponding to the second TRP and one of the second reference signal ports in the first group of second reference signal ports, and according to the second field, determine the association relationship between the first reference signal port 1 corresponding to the second TRP and one of the second reference signal ports in the second group of second reference signal ports.

[0040] In an optional design, the third indication field includes a first field and a second field, the first field and the second field as a group of code point sequences indicate the port correspondence relationship corresponding to the two TRPs, the first reference signal port corresponding to the first TRP and the second TRP is 1, and the second reference signal port includes a first group of second reference signal ports and a second group of second reference signal ports; the determination module is used to:

[0041] Determine, according to the code point sequence, an association relationship between a first reference signal port corresponding to the first TRP and a second reference signal port in the first group of second reference signal ports;

[0042] Determine, according to the code point sequence, an association relationship between a first reference signal port corresponding to the second TRP and a second reference signal port in the second group of second reference signal ports.

[0043] In an optional design, the third indication field includes a first field and a second field, the first field and the second field as a group of code point sequences indicate the port correspondence relationship corresponding to the two TRPs, the first reference signal ports corresponding to the first TRP and the second TRP both include a first reference signal port 0 and a first reference signal port 1, and the second reference signal port includes a first group of second reference signal ports and a second group of second reference signal ports; the determination module is used to:

[0044] Determine, according to the code point sequence, an association relationship between a first reference signal port 0 corresponding to the first TRP and a second reference signal port in the first group of second reference signal ports, and determine an association relationship between a first reference signal port 1 corresponding to the first TRP and a second reference signal port in the second group of second reference signal ports;

[0045] According to the code point sequence, an association relationship between the first reference signal port 0 corresponding to the second TRP and a second reference signal port in the first group of second reference signal ports is determined, and an association relationship between the first reference signal port 1 corresponding to the second TRP and a second reference signal port in the second group of second reference signal ports is determined.

[0046] In an optional design, the determining module is used to:

[0047] Determine the port association relationship indicated by the first field and the second field as the first port association relationship corresponding to the first TRP;

[0048] Determine a second port association relationship corresponding to the second TRP according to the first port association relationship and the second predefined relationship;

[0049] The first port association relationship and the second port association relationship are different.

[0050] In an optional design, the number of first reference signal ports corresponding to each of the TRPs is 1 or 2.

[0051] In an optional design, the first reference signal is PT-RS, and the second reference signal is DMRS.

[0052] In an optional design, the first information is DCI.

[0053] In an optional design, the second information is RRC information.

[0054] In an optional design, the sending module is used to:

[0055] According to the port association relationship, the first reference signal is sent to the two TRPs respectively.

[0056] According to another aspect of the present application, a device for configuring a reference signal is provided, the device comprising:

[0057] A sending module is used to send first information to a terminal device, where the first information is used to indicate a port association relationship corresponding to two TRPs, and the port association relationship is used to reflect an association relationship between a first reference signal port and a second reference signal port.

[0058] In an optional design, the two TRPs include a first TRP and a second TRP, and the first information includes a first indication field and a second indication field;

[0059] The first indication field is used to indicate a first port association relationship corresponding to the first TRP;

[0060] The second indication field is used to indicate the second port association relationship corresponding to the second TRP.

[0061] In an optional design, the device further includes:

[0062] A receiving module is used to receive the terminal capabilities reported by the terminal device, where the terminal capabilities are used to indicate whether the terminal device supports the capabilities configured with the second indication domain.

[0063] In an optional design, the sending module is used to:

[0064] In response to the terminal device supporting the capability of being configured with the second indication field, the first information is sent to the terminal device.

[0065] In an optional design, the sending module is used to:

[0066] Sending second information to the terminal device, where the second information is used to indicate that the first information includes two indication fields.

[0067] In an optional design, the two TRPs include a first TRP and a second TRP, the first information includes a third indication field, and the third indication field is used to indicate a port correspondence relationship corresponding to the two TRPs using the same indication field;

[0068] The third indication field is used to indicate a first port association relationship corresponding to the first TRP and a second port association relationship corresponding to the second TRP.

[0069] In an optional design, the port association relationship indicated by the third indication field is used to indicate a first port association relationship corresponding to the first TRP and a second port association relationship corresponding to the second TRP;

[0070] The first port association relationship is the same as the second port association relationship.

[0071] In an optional design, the port association relationship indicated by the third indication field is used to indicate a first port association relationship corresponding to the first TRP; the first port association relationship and the first predefined relationship are used to indicate a second port association relationship corresponding to the second TRP;

[0072] The first port association relationship and the second port association relationship are different.

[0073] In an optional design, the third indication field includes a first field and a second field;

[0074] The first field is used to indicate a first port association relationship corresponding to the first TRP, and the second field is used to indicate a second port association relationship corresponding to the second TRP;

[0075] or,

[0076] The first field and the second field are used to indicate a first port association relationship corresponding to the first TRP, and the first field and the second field are also used to indicate a second port association relationship corresponding to the second TRP.

[0077] In an optional design, the first reference signal port corresponding to the first TRP and the second TRP is one, and the second reference signal port includes a first group of second reference signal ports and a second group of second reference signal ports;

[0078] The first field is used to indicate an association relationship between a first reference signal port corresponding to the first TRP and a second reference signal port in the first group of second reference signal ports;

[0079] The second field is used to indicate an association relationship between a first reference signal port corresponding to the second TRP and a second reference signal port in the second group of second reference signal ports.

[0080] In an optional design, the first reference signal ports corresponding to the first TRP and the second TRP both include a first reference signal port 0 and a first reference signal port 1, and the second reference signal ports include a first group of second reference signal ports and a second group of second reference signal ports;

[0081] The first field is used to indicate an association relationship between a first reference signal port 0 corresponding to the first TRP and a second reference signal port in the first group of second reference signal ports, and the second field is used to indicate an association relationship between a first reference signal port 1 corresponding to the first TRP and a second reference signal port in the second group of second reference signal ports;

[0082] The first field is further used to indicate an association relationship between the first reference signal port 0 corresponding to the second TRP and a second reference signal port in the first group of second reference signal ports, and the second field is further used to indicate an association relationship between the first reference signal port 1 corresponding to the second TRP and a second reference signal port in the second group of second reference signal ports.

[0083] In an optional design, the third indication field includes a first field and a second field, the first field and the second field as a group of code point sequences indicate the port correspondence relationship corresponding to the two TRPs, the first reference signal port corresponding to the first TRP and the second TRP are both 1, and the second reference signal port includes a first group of second reference signal ports and a second group of second reference signal ports;

[0084] The code point sequence is used to indicate an association relationship between a first reference signal port corresponding to the first TRP and a second reference signal port in the first group of second reference signal ports;

[0085] The code point sequence is further used to indicate an association relationship between a first reference signal port corresponding to the second TRP and a second reference signal port in the second group of second reference signal ports.

[0086] In an optional design, the third indication domain includes a first field and a second field, the first field and the second field as a group of code point sequences indicate the port correspondence relationship corresponding to the two TRPs, the first reference signal ports corresponding to the first TRP and the second TRP both include a first reference signal port 0 and a first reference signal port 1, and the second reference signal port includes a first group of second reference signal ports and a second group of second reference signal ports;

[0087] The code point sequence is used to indicate an association relationship between a first reference signal port 0 corresponding to the first TRP and a second reference signal port in the first group of second reference signal ports, and is also used to indicate an association relationship between a first reference signal port 1 corresponding to the first TRP and a second reference signal port in the second group of second reference signal ports;

[0088] The code point sequence is also used to indicate an association relationship between the first reference signal port 0 corresponding to the second TRP and one of the second reference signal ports in the first group of second reference signal ports, and is also used to indicate an association relationship between the first reference signal port 1 corresponding to the second TRP and one of the second reference signal ports in the second group of second reference signal ports.

[0089] In an optional design, the port association relationship indicated by the first field and the second field is used to indicate a first port association relationship corresponding to the first TRP;

[0090] The first port association relationship and the second predefined relationship are used to indicate a second port association relationship corresponding to the second TRP;

[0091] The first port association relationship and the second port association relationship are different.

[0092] In an optional design, the number of first reference signal ports corresponding to each of the TRPs is 1 or 2.

[0093] In an optional design, the first reference signal is PT-RS, and the second reference signal is DMRS.

[0094] In an optional design, the first information is DCI.

[0095] In an optional design, the second information is RRC information.

[0096] In an optional design, the receiving module is used to:

[0097] The first reference signal sent by the terminal device is received through the two TRPs respectively according to the port association relationship.

[0098] According to another aspect of the present application, a terminal device is provided, the terminal device comprising: a processor and a transceiver connected to the processor; wherein,

[0099] The transceiver is used to receive first information sent by a network device, where the first information is used to indicate a port association relationship corresponding to two TRPs, and the port association relationship is used to reflect an association relationship between a first reference signal port and a second reference signal port.

[0100] According to another aspect of the present application, a network device is provided, the network device comprising: a processor and a transceiver connected to the processor; wherein,

[0101] The transceiver is used to send first information to the terminal device, where the first information is used to indicate the port association relationship corresponding to two TRPs, and the port association relationship is used to reflect the association relationship between the first reference signal port and the second reference signal port.

[0102] According to another aspect of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores executable instructions, and the executable instructions are loaded and executed by a processor to implement the reference signal configuration method as described in the above aspects.

[0103] According to another aspect of an embodiment of the present application, a chip is provided, which includes a programmable logic circuit and / or program instructions. When the chip runs on a computer device, it is used to implement the reference signal configuration method described in the above aspects.

[0104] According to another aspect of the present application, a computer program product is provided. When the computer program product is executed on a processor of a computer device, the computer device executes the reference signal configuration method described in the above aspects.

[0105] The technical solution provided by the embodiments of the present application includes at least the following beneficial effects:

[0106] The first information can be used to configure the association relationship between the first reference signal port and the second reference signal port for multiple TRPs. The first reference signal can be PT-RS, and the second reference signal can be DMRS. The port association relationship configured for multiple TRPs can achieve a trade-off between DCI overhead and PT-RS performance to a certain extent, provide the network with more scheduling flexibility, and ensure the overall optimal system performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0107] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0108] Figure 1 is a schematic diagram of a physical resource block provided by an exemplary embodiment of the present application;

[0109] Figure 2 is a schematic diagram of another physical resource block provided by an exemplary embodiment of the present application;

[0110] Figure 3 It is a schematic diagram of repeated transmission of PUSCH between time slots in an uplink channel transmission method provided by an exemplary embodiment of the present application;

[0111] Figure 4 It is a schematic diagram of repeated transmission of PUSCH between time slots in an uplink channel transmission method provided by an exemplary embodiment of the present application;

[0112] Figure 5 It is a schematic diagram of repeated transmission of PUSCH between time slots in an uplink channel transmission method provided by an exemplary embodiment of the present application;

[0113] Figure 6 is a schematic diagram of a system architecture provided by an exemplary embodiment of the present application;

[0114] Figure 7 is a flowchart of a method for configuring a reference signal provided by an exemplary embodiment of the present application;

[0115] Figure 8 is a flowchart of a method for configuring a reference signal provided by an exemplary embodiment of the present application;

[0116] Fig. 9 is a flowchart of a method for configuring a reference signal provided by an exemplary embodiment of the present application;

[0117] Fig.10 is a flowchart of a method for configuring a reference signal provided by an exemplary embodiment of the present application;

[0118] Fig.11 is a flowchart of a method for configuring a reference signal provided by an exemplary embodiment of the present application;

[0119] Fig.12 is a flowchart of a method for configuring a reference signal provided by an exemplary embodiment of the present application;

[0120] Fig.13 is a flowchart of a method for configuring a reference signal provided by an exemplary embodiment of the present application;

[0121] Fig.14 is a flowchart of a method for configuring a reference signal provided by an exemplary embodiment of the present application;

[0122] Fig.15 is a flowchart of a method for configuring a reference signal provided by an exemplary embodiment of the present application;

[0123] Fig.16 is a structural block diagram of a reference signal configuration device provided by an exemplary embodiment of the present application;

[0124] Fig.17 is a structural block diagram of a reference signal configuration device provided by an exemplary embodiment of the present application;

[0125] Fig.18It is a structural diagram of a communication device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0126] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0127] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0128] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0129] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0130] First, let’s introduce the Phase Tracking Reference Signal (PT-RS):

[0131] The operation of the local oscillator circuit in the network equipment and terminal equipment will destroy the orthogonality of each subcarrier in the Orthogonal Frequency Division Multiplexing (OFDM) system, which will generate phase noise (PN) and then common phase error (CPE), which will affect the performance of uplink and downlink transmission. Therefore, the network equipment needs to compensate for CPE. In 5G NR, the network equipment can estimate the CPE through the PT-RS signal sent by the terminal equipment, so as to perform compensation calculations and compensate the CPE to enhance signal coverage and improve signal quality. PT-RS is a terminal-specific reference signal configured by the network equipment to the terminal equipment. PT-RS can be used to estimate the CPE introduced by the local oscillator circuit in the network equipment and terminal equipment.

[0132] Since the CPE generated by PN has the same frequency characteristics over the entire frequency band and has random phase characteristics in time, the design of PT-RS is: sparse in the frequency domain and high density in the time domain. The mapping of PT-RS in the frequency domain can be uniformly distributed or concentrated. When uniform distribution is adopted, a carrier can be selected in each physical resource block (PRB) or in every several PRBs for PT-RS mapping. When concentrated distribution is adopted, PT-RS can be concentratedly mapped to multiple adjacent subcarriers. The uniform distribution can ensure that the PT-RS port corresponds to the DMRS port one by one, and the corresponding phase noise compensation algorithm is also relatively simple. The centralized distribution can not only compensate for CPE, but also further compensate for the interference between carriers, but the corresponding PT-RS transmission method and phase noise compensation algorithm are relatively complex. In 5G NR, a uniform distribution method is adopted to support each PT-RS port to be associated with a DMRS port. The embodiment of the present application is mainly described by using a uniform distribution method for mapping PT-RS in the frequency domain. PT-RS and DMRS are both reference signals. PT-RS can be regarded as an extension of DMRS, and data transmission of a PT-RS port is implemented based on a DMRS port associated with PT-RS.

[0133] For example, Figure 1 FIG. 1 is a schematic diagram of a physical resource block provided by an exemplary embodiment of the present application. Figure 1 As shown, in each PRB 101, there is a carrier for mapping PT-RS 102, and at this time, PT-RS 102 is evenly distributed. Figure 2 FIG. 1 is a schematic diagram of another physical resource block provided by an exemplary embodiment of the present application. Figure 2 As shown, in one PRB201 among multiple PRB201, there are multiple adjacent carriers for mapping of PT-RS202, and at this time, PT-RS202 adopts a centralized distribution mode.

[0134] The number of PT-RS ports is related to the number of phase noise sources. When there are multiple independent phase noise sources, each phase noise source requires a PT-RS port to realize the phase estimation of the phase noise source. The scenario of multiple PT-RS ports is mainly used in multi-point collaboration. The phase noise source of each collaboration point is independent of each other, so each collaboration point needs to be configured with a PT-RS port. For uplink transmission, considering the partial coherence or incoherence of the uplink transmission, non-collaborative scenarios also require multiple PT-RS ports. In R15 (Release15), 1 downlink PT-RS port and 2 uplink PT-RS ports are supported. Whether PT-RS is transmitted in the uplink is also controlled by the configuration of high-level parameters. If the terminal device is not configured with phaseTrackingRS in the high-level parameter DMRS-UplinkConfig, the terminal device will not fail to transmit PT-RS in the uplink.

[0135] PT-RS can be used as an extension of the demodulation pilot and configured to be transmitted simultaneously with the user data within the user's scheduling bandwidth. At this time, PT-RS can be used for both phase estimation and data demodulation. For multi-data stream transmission scenarios, if all data streams experience the same phase noise source, PT-RS can be transmitted on any data stream. That is, the PT-RS port can be associated with any DMRS port, and the PT-RS port and its associated DMRS port use the same precoding. The phase noise estimated based on PT-RS can be used for phase noise compensation of the remaining data streams. In 5G NR, it is stipulated that QCL-TypeA (QUASI CO-LOCATION TypeA, quasi co-location TypeA) and QCL-TypeD are satisfied between the PT-RS port and its associated DMRS port.

[0136] In order to ensure the transmission performance of PT-RS, it can be mapped to the data stream with the best channel quality for transmission. According to the 5G NR protocol, during downlink transmission, if the terminal device only schedules one codeword, the PT-RS port is associated with the DMRS port with the lowest index value; if the terminal device schedules two codewords, the PT-RS port is associated with the DMRS port with the lowest index value corresponding to the codeword with the highest modulation and coding strategy (Modulation and Coding Scheme, MCS); if the two codewords are the same, the PT-RS port is associated with the DMRS port with the lowest index value corresponding to the first codeword. Since the terminal device can feedback LI, which indicates the precoding used by the strongest layer, the network device can ensure that the PT-RS is transmitted on the strongest transmission layer. During uplink transmission, since the network device knows the uplink channel state information, the association between the PT-RS port and the DMRS port is indicated by the downlink control information (Downlink Control Information, DCI). In particular, for codebook-based partially coherent and incoherent transmission, the structure of the uplink codebook implicitly assumes that the sounding reference signal (SRS) port 0 and SRS port 2 have the same phase noise, and SRS port 1 and SRS port 3 have the same phase noise. Therefore, the protocol stipulates that PT-RS port 0 is associated with the DMRS port transmitted on SRS port 0 and SRS port 2, and PT-RS port 1 is associated with the DMRS port transmitted on SRS port 1 and SRS port 3.

[0137] After that, the multiple Transmit-Receive Points (TRP) of network devices are introduced:

[0138] In the R16 research phase, a multi-point cooperative transmission technology based on multiple TRPs of network equipment and multiple antenna panels (panels) of terminal equipment was proposed to enhance the transmission of the Physical Downlink Shared Channel (PDSCH). Based on multiple TRPs and multiple panels, it is possible to improve the coverage of the cell edge, provide a more balanced service quality in the service area, and adopt different methods to coordinate data transmission between multiple TRPs or panels. From the perspective of network morphology, network deployment with a large number of distributed access points (TRPs) plus baseband centralized processing is more conducive to providing a balanced user experience rate and significantly reducing the delay and signaling overhead caused by handover. By utilizing the collaboration between multiple TRPs and panels, it is possible to transmit / receive channels from multiple beams at multiple angles, which can better overcome various occlusion / blocking effects and ensure the robustness of link connections, thereby improving transmission quality and meeting reliability requirements in the ultra-reliable and low-latency communication (URLLC) scenario.

[0139] Since data transmission includes scheduling feedback of uplink and downlink channels, in the study of URLLC, only enhancing the downlink data channel cannot guarantee the overall transmission performance of the network. Therefore, in the study of R17, the physical downlink control channel (PDCCH), physical uplink control channel (PUCCH) and physical uplink shared channel (PUSCH) will continue to be enhanced.

[0140] The uplink channel enhancement scheme based on multiple TRPs is mainly based on the PUCCH / PUSCH repetition transmission scheme of R16. The embodiment of the present application mainly introduces the PUSCH repetition transmission scheme. The uplink transmission scheme of PUSCH includes two schemes: codebook-based uplink transmission and non-codebook uplink transmission. For PUSCH transmission for different TRPs, the direction information can be indicated by the SRS Resource Indicator (SRI) field in the DCI signaling. At present, the time division multiplexing technology (TDM) repetition mode of PUSCH mainly includes PUSCH repetition type A and PUSCH repetition type B.

[0141] (1) PUSCH repetition type A transmission mode.

[0142] The repeated transmission between time slots is configured through Radio Resource Control (RRC) signaling, and the same Transport Block (TB) is repeatedly transmitted on multiple transmission occasions. This type of transmission is mainly used at the cell edge, so the number of transmission layers is limited to single-sided transmission. A PUSCH is transmitted in K consecutive time slots, that is, K transmission opportunities, starting from the Sth symbol in the starting time slot. Each transmission opportunity lasts for L symbols, and S+L does not exceed the time slot boundary. For example, Figure 3 As shown, S is equal to 1, and L is equal to 4. The terminal device performs the first repetition transmission from the 1st symbol to the 4th symbol in the first time slot, and performs the second repetition transmission from the 1st symbol to the 4th symbol in the second time slot.

[0143] (2) PUSCH repetition type B transmission mode.

[0144] This transmission type can achieve continuous (back to back) transmission for the same TB and can cross time slot boundaries. This transmission type has no restrictions on the number of transmission layers and can support uplink 1-4 layer data transmission. In the time domain, a PUSCH starts transmission at the Sth symbol in the starting time slot, and sends K transmission opportunities (nominal repetition) continuously. Each transmission opportunity occupies L symbols continuously (back-to-back), and the transmission S+L can cross time slot boundaries.

[0145] like Figure 4 As shown, when S is equal to 1 and L is equal to 4, the terminal device is configured to perform 4 repeated transmissions of the uplink channel. The terminal device performs the first repeated transmission from the 1st symbol to the 4th symbol of the first time slot, and the second repeated transmission from the 5th symbol to the 8th symbol of the first time slot. Since according to the configuration information, the 4 symbols of the third repeated transmission cross the time slot boundary of the time slot, the third repeated transmission is divided into two repeated transmissions, and the third repeated transmission is performed from the 9th symbol to the 10th symbol of the first time slot, and the fourth repeated transmission is performed from the 1st symbol to the 2nd symbol of the second time slot. The fifth repeated transmission is performed from the 3rd symbol to the 7th symbol of the second time slot. That is, the terminal device actually performs 5 repeated transmissions, and each repeated transmission sends the same data.

[0146] like Figure 5As shown in the figure, when S is equal to 1 and L is equal to 14, the terminal device is configured to perform one repetition transmission of the uplink channel. Since the length of a time slot is 10 symbols, each transmission opportunity occupies 14 symbols, and the 14 symbols of the first repetition transmission will cross the time slot boundary, and the first repetition transmission will be divided into two repetition transmissions, the first repetition transmission is performed from the 1st symbol to the 10th symbol of the first time slot, and the second repetition transmission is performed from the 1st symbol to the 4th symbol of the second time slot. That is, the terminal device actually performs two repetition transmissions, and each repetition transmission sends the same data.

[0147] For PUSCH based on multi-TRP transmission, the terminal further obtains spatial diversity gain and improves transmission reliability by jointly sending a unified TB of PUSCH to different TRPs. For different transmission opportunities, the transmission corresponding to different beam directions can be mapped. The following are three typical solutions:

[0148] Solution a: Alternating mapping. The two beam directions are cyclically mapped to multiple configured transmission opportunities in turn. For example, when four repeated transmissions are performed, the beam direction mapping pattern can be #1#2#1#2, where #1 corresponds to the first beam direction and #2 corresponds to the second beam direction.

[0149] Solution b: Continuous mapping. Two beam directions are continuously and cyclically mapped to multiple configured transmission opportunities. For example, when four repeated transmissions are performed, the pattern of beam direction mapping can be #1#1#2#2; for more than four repeated transmissions, the pattern is repeated. For example, for eight repeated transmissions, the pattern of beam direction mapping can be #1#1#2#2#1#1#2#2.

[0150] Solution c: Half-and-half mapping. Two beam directions are continuously mapped to multiple configured transmission opportunities. For example, when eight repeated transmissions are performed, the beam direction mapping pattern may be #1#1#1#1#2#2#2#2.

[0151] In the above scenario of multiple TRPs, the configuration of PT-RS needs further discussion and research. The method provided in the embodiment of the present application can realize the configuration of the association relationship between PT-RS ports and DMRS ports for multiple TRPs.

[0152] Figure 6 1 is a schematic diagram of a system architecture provided by an embodiment of the present application. The system architecture may include: a terminal device 10 and a network device 20.

[0153] The number of terminal devices 10 is usually multiple, and one or more terminal devices 10 may be distributed in a cell managed by each network device 20. The terminal device 10 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE), mobile stations (MS), etc. For the convenience of description, in the embodiments of the present application, the above-mentioned devices are collectively referred to as terminal devices.

[0154] The network device 20 is a device deployed in an access network to provide wireless communication functions for the terminal device 10. The network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems using different wireless access technologies, the names of devices with network device functions may be different. For example, in a 5G NR system, it is called gNodeB or gNB. With the evolution of communication technology, the name "network device" may change. For the convenience of description, in the embodiments of the present application, the above-mentioned devices that provide wireless communication functions for the terminal device 10 are collectively referred to as network devices.

[0155] Exemplarily, a plurality of TRPs are deployed on a network device 20, for example, TRP1 and TRP2 are corresponding to the network device 20. The network device 20 receives repeated transmissions of the uplink channel sent by the terminal device through the plurality of TRPs.

[0156] The "5G NR system" in the embodiments of the present disclosure may also be referred to as a 5G system or an NR system, but those skilled in the art may understand its meaning. The technical solution described in the embodiments of the present disclosure may be applicable to a 5G NR system or to a subsequent evolution system of the 5G NR system.

[0157] Figure 7 A flowchart of a method for configuring a reference signal provided by an embodiment of the present application is shown. Figure 7 This method is applied to Figure 6 The method is illustrated by taking a terminal device in the communication system shown in FIG. 1 as an example. The method comprises:

[0158] Step 702: The terminal device receives the first information sent by the network device.

[0159] The first information is used to indicate the port association relationship corresponding to the two TRPs, and the port association relationship is used to reflect the association relationship between the first reference signal port and the second reference signal port. The first information is configured by the network device for the terminal device. The first reference signal port is a port for transmitting the first reference signal, and the second reference signal port is a port for transmitting the second reference signal. In some possible implementations, if the first reference signal and / or the second reference signal are sent respectively through multiple TRPs, the first information can be used to indicate the port association relationship corresponding to multiple TRPs.

[0160] Optionally, the first reference signal is a PT-RS. Optionally, the second reference signal is a DMRS. Optionally, the first information is a DCI. The two TRPs are TRPs corresponding to the network devices connected to the terminal device. Among them, a second reference signal port in each TRP is associated with a first reference signal port to achieve the transmission of the PT-RS. Each TRP corresponds to one or two PT-RS ports.

[0161] Optionally, the first information includes two indication fields, each of which is used to indicate an association relationship between the first signal port and the second signal port. The terminal device can determine the port association relationship corresponding to the two TRPs according to the indications of the two indication fields.

[0162] Optionally, the first information includes an indication field, and the terminal device can determine the port association relationship corresponding to the two TRPs separately or simultaneously according to the indication of the indication field.

[0163] In summary, the method provided in this embodiment can configure the association relationship between the first reference signal port and the second reference signal port for multiple TRPs through the first information. The first reference signal can be PT-RS, and the second reference signal can be DMRS. The port association relationship configured for multiple TRPs can achieve a trade-off between DCI overhead and PT-RS performance to a certain extent, provide the network with more scheduling flexibility, and ensure the overall optimal system performance.

[0164] Figure 8 A flowchart of a method for configuring a reference signal provided by an embodiment of the present application is shown. Figure 8 This method is applied to Figure 6 The method is illustrated by taking a network device in the communication system shown in FIG.

[0165] Step 802: The network device sends first information to the terminal device.

[0166] The first information is used to indicate the port association relationship corresponding to the two TRPs, and the port association relationship is used to reflect the association relationship between the first reference signal port and the second reference signal port. The first information is configured by the network device for the terminal device. The first reference signal port is a port for transmitting the first reference signal, and the second reference signal port is a port for transmitting the second reference signal. In some possible implementations, if the first reference signal and / or the second reference signal are sent respectively through multiple TRPs, the first information can be used to indicate the port association relationship corresponding to multiple TRPs.

[0167] Optionally, the first reference signal is a PT-RS. Optionally, the second reference signal is a DMRS. Optionally, the first information is a DCI. The two TRPs are TRPs corresponding to the network devices connected to the terminal device. Among them, a second reference signal port in each TRP is associated with a first reference signal port to achieve the transmission of the PT-RS. Each TRP corresponds to one or two PT-RS ports.

[0168] Optionally, the first information includes two indication fields, each of which is used to indicate an association relationship between the first signal port and the second signal port. The terminal device can determine the port association relationship corresponding to the two TRPs according to the indications of the two indication fields.

[0169] Optionally, the first information includes an indication field, and the terminal device can determine the port association relationship corresponding to the two TRPs separately or simultaneously according to the indication of the indication field.

[0170] In summary, the method provided in this embodiment can configure the association relationship between the first reference signal port and the second reference signal port for multiple TRPs through the first information. The first reference signal can be PT-RS, and the second reference signal can be DMRS. The port association relationship configured for multiple TRPs can achieve a trade-off between DCI overhead and PT-RS performance to a certain extent, provide the network with more scheduling flexibility, and ensure the overall optimal system performance.

[0171] Optionally, the network device can indicate the port association relationship corresponding to two TRPs by sending different first information to the terminal device.

[0172] The first type: the first information has two indication fields.

[0173] Fig. 9 A flowchart of a method for configuring a reference signal provided by an embodiment of the present application is shown. Fig. 9 This method is applied to Figure 6 The communication system shown is used as an example. The method includes:

[0174] Step 902: The terminal device reports the terminal capability to the network device.

[0175] The terminal capability is used to indicate whether the terminal device supports the ability to be configured with a second indication domain. Alternatively, the terminal capability is used to indicate whether the terminal device supports the ability to be configured with two indication domains. Alternatively, the terminal capability is used to indicate whether the terminal device has the ability to parse the first information of the two indication domains. Alternatively, the terminal capability is used to indicate whether the terminal device has the ability to parse the second indication domain. Optionally, the first information is DCI. The two indication domains are used to indicate the association between the first reference signal port and the second reference signal port in the TRP corresponding to the network device. The first reference signal and the second reference signal are both reference signals, for example, the first reference signal is PT-RS, and for example, the second reference signal is DMRS. The first reference signal is transmitted via the second reference signal port associated with the first reference signal port.

[0176] Optionally, when the terminal device joins a cell provided by the network device, it will report the terminal capability to the network device. The terminal capability is prefabricated or configured when the terminal device leaves the factory.

[0177] Step 904: The network device sends first information to the terminal device.

[0178] In some embodiments, in response to determining that the terminal device supports the capability of being configured with the second indication field, the network device configures the first information including the first indication field and the second indication field for the terminal device. In other embodiments, the network device configures the first information including the first indication field and the second indication field to the terminal device, regardless of whether the terminal capability sent by the terminal device has been received. That is: the terminal device reports the terminal capability to the network device, and the network device sends the first information to the terminal device; there is no causal relationship and execution order relationship between these two steps.

[0179] The first information is used to indicate the port association relationship corresponding to the two TRPs. When the network device configures the parameter UL-PTRS-present for the terminal device, the terminal device needs to transmit PT-RS in the uplink. The network device will indicate the port association relationship corresponding to the TRP through the first information. The first indication domain and the second indication domain can be the PTRS-DMRS association in DCI0_1 or DCI0_2. The port association relationship is used to reflect the association relationship between the first reference signal port and the second reference signal port. The two TRPs include a first TRP and a second TRP. Among them, the first indication domain is used to indicate the first port association relationship corresponding to the first TRP, and the second indication domain is used to indicate the second port association relationship corresponding to the second TRP. The correspondence between the first indication domain and the first TRP is configured or predefined, and the correspondence between the second indication domain and the second TRP is configured or predefined. Optionally, when the terminal device sends in the uplink, the maximum number of data layers supported is greater than 2.

[0180] Each of the two TRPs corresponds to one or two PT-RS ports. Therefore, the first port association relationship and the second port association relationship are both used to indicate the association relationship between a single first reference signal port (such as PT-RS port 0 or PT-RS port 1) and a second reference signal port. Or, the first port association relationship and the second port association relationship are both used to indicate the association relationship between a dual first reference signal port (such as PT-RS port 0 and PT-RS port 1) and a second reference signal port. By way of example, Table 1 shows the relationship between the value of the indication domain and the indicated port association relationship in the case of a single PT-RS port.

[0181] Table 1

[0182] Value DMRS Port 0 Configured to associate with DMRS port 1 1 Configured to associate with DMRS port 2 2 Configured to associate with DMRS port 3 3 Configured to associate with DMRS port 4

[0183] As shown in Table 1, when the value (Value) in the first indication domain or the second indication domain is 0, it indicates that PT-RS port 0 is associated with the first DMRS port in the corresponding TRP, when the value in the first indication domain or the second indication domain is 1, it indicates that PT-RS port 0 is associated with the second DMRS port in the corresponding TRP, when the value in the first indication domain or the second indication domain is 2, it indicates that PT-RS port 0 is associated with the third DMRS port in the corresponding TRP, and when the value in the first indication domain or the second indication domain is 3, it indicates that PT-RS port 0 is associated with the fourth DMRS port in the corresponding TRP. Of course, the above-mentioned association method is only an example and is not a limitation on the implementation method in the embodiments of the present disclosure.

[0184] Table 2 shows the relationship between the indication field and the indicated port association relationship in the case of dual PT-RS ports.

[0185] Table 2

[0186]

[0187] As shown in Table 2, when there are two PT-RS ports corresponding to the TRP, the DMRS ports in the TRP will be divided into two groups. When the maxNrofPorts in the high-level parameter PTRS-UplinkConfig is configured to "n2", it indicates that the number of PT-RS ports corresponding to the TRP is the largest. At this time, the network side will divide the DMRS ports into two groups through SRS resources, thereby establishing an association relationship with the PT-RS ports respectively. For example, there are 4 DMRS ports in the TRP, namely DMRS port 0, DMRS port 1, DMRS port 2, and DMRS port 3. Among them, DMRS port 0 and DMRS port 2 are the first group, and DMRS port 1 and DMRS port 3 are the second group. When the value of the most significant bit (Most Significant Bit, MSB) in the first indication domain or the second indication domain is 0, it indicates that the PT-RS port is associated with the first (DMRS port 0) of the first group of DMRS ports in the corresponding TRP. When the least significant bit (LSB) in the first indication field or the second indication field is 1, it indicates that the PT-RS port is associated with the second one (DMRS port 3) in the second group of DMRS ports in the corresponding TRP.

[0188] Optionally, the network device further sends second information to the terminal device, where the second information is used to indicate that the first information includes two indication fields. The second information is RRC information.

[0189] Step 906: The terminal device sends a first reference signal to two TRPs respectively according to the port association relationship.

[0190] When the terminal device transmits PT-RS to the first TRP uplink, it uses the DMRS port associated with the PT-RS port corresponding to the first TRP. When the terminal device transmits PT-RS to the second TRP uplink, it uses the DMRS port associated with the PT-RS port corresponding to the second TRP.

[0191] In some possible implementations, the "two" in all embodiments of the present disclosure is not a closed limitation, that is, it may include two or more TRPs, two or more ports, which will not be repeated here. At the same time, in other embodiments of the present disclosure, it can also be considered that "two TRPs" or "two ports" refer to two or more than two.

[0192] In summary, the method provided in this embodiment can configure the association relationship between the first reference signal port and the second reference signal port for multiple TRPs through the first indication field and the second indication field of the first information. The first reference signal can be PT-RS, and the second reference signal can be DMRS. The port association relationship configured for multiple TRPs can achieve a trade-off between DCI overhead and PT-RS performance to a certain extent, provide more scheduling flexibility to the network, and ensure the overall optimal system performance. In addition, the terminal device can actively report the terminal capabilities to the network device, so that the network device can easily determine whether the terminal device supports the configuration of the second indication field.

[0193] The second type: the first information has an indication field. Specifically, it includes the following situations:

[0194] (1) Use one indication field to simultaneously indicate the port association relationship corresponding to two TRPs.

[0195] Fig.10 A flowchart of a method for configuring a reference signal provided by an embodiment of the present application is shown. Fig.10 This method is applied to Figure 6 The communication system shown is used as an example. The method includes:

[0196] Step 1002: The network device sends first information to the terminal device, where the first information includes a third indication field.

[0197] The third indication domain is used to determine the first port association relationship corresponding to the first TRP and the second port association relationship corresponding to the second TRP. The third indication domain is used to indicate the port correspondence relationship corresponding to the two TRPs using the same indication domain. Optionally, the first information is DCI. In the first information, except for the third indication domain, there are no other indication domains for indicating the port association relationship. The third indication domain can be understood as the above-mentioned first indication domain. Specifically, the third indication domain is the same as or different from the above-mentioned first indication domain or the second indication domain (with different functions). The third indication domain is similar to the above-mentioned first indication domain or the second indication domain, so the cost of developing the third indication domain is low.

[0198] Step 1004: The terminal device determines the port association relationship indicated by the third indication field as the first port association relationship corresponding to the first TRP and the second port association relationship corresponding to the second TRP.

[0199] Among them, the first port association relationship and the second port association relationship are the same. The third indication field can indicate the first port association relationship corresponding to the first TRP and the second port association relationship corresponding to the second TRP through the above-mentioned value (Value) or MSB, LSB. The specific indication rules can refer to the aforementioned embodiment, and this application will not be repeated here. Optionally, there are also code points (codepoints) in the third indication field, and the terminal device can determine the first port association relationship corresponding to the first TRP and the second port association relationship corresponding to the second TRP based on the code points. For example, the DMRS ports in the first TRP and the second TRP are divided into two groups. When the code point is 0, it is used to indicate that the PT-RS ports in the first TRP and the second TRP are associated with PT-RS port 0 in the first group of DMRS ports. When the code point is 1, it is used to indicate that the PT-RS ports in the first TRP and the second TRP are associated with PT-RS port 1 in the first group of DMRS ports.

[0200] The first port association relationship and the second port association relationship are both used to indicate the association relationship between a single first reference signal port and a second reference signal port. Alternatively, the first port association relationship and the second port association relationship are both used to indicate the association relationship between two first reference signal ports and a second reference signal port.

[0201] Step 1006: The terminal device sends a first reference signal to two TRPs respectively according to the port association relationship.

[0202] When the terminal device transmits PT-RS to the first TRP uplink, it uses the DMRS port associated with the PT-RS port corresponding to the first TRP. When the terminal device transmits PT-RS to the second TRP uplink, it uses the DMRS port associated with the PT-RS port corresponding to the second TRP.

[0203] In summary, the method provided in this embodiment can configure the association relationship between the first reference signal port and the second reference signal port for multiple TRPs at the same time through the third indication field. The first reference signal can be PT-RS, and the second reference signal can be DMRS. The port association relationship configured for multiple TRPs can achieve a trade-off between DCI overhead and PT-RS performance to a certain extent, provide the network with more scheduling flexibility, and ensure the overall optimal system performance.

[0204] (2) Use an indication field to first indicate a port association relationship corresponding to a TRP, and then determine a port association relationship corresponding to another TRP based on the determined port association relationship.

[0205] Fig.11 A flowchart of a method for configuring a reference signal provided by an embodiment of the present application is shown. Fig.11 This method is applied to Figure 6 The communication system shown is used as an example. The method includes:

[0206] Step 1102: The network device sends first information to the terminal device, where the first information includes a third indication field.

[0207] The third indication field is used to determine the first port association relationship corresponding to the first TRP and the second port association relationship corresponding to the second TRP. Optionally, the first information is DCI, and in the first information, except for the third indication field, there is no other indication field for indicating the port association relationship.

[0208] Step 1104: The terminal device determines the port association relationship indicated by the third indication field as the first port association relationship corresponding to the first TRP.

[0209] Step 1106: The terminal device determines a second port association relationship corresponding to the second TRP based on the first port association relationship and the first predefined relationship.

[0210] The first port association relationship and the second port association relationship are different. After determining the first port association relationship, the terminal device uses the first port association relationship as a reference and determines the second port association relationship according to the first predefined relationship. The first predefined relationship includes a cycling relationship and other patterns.

[0211] For example, in the case of a single PT-RS port, the first port association relationship is that PT-RS port 0 is associated with DMRS port 0, and the terminal device determines the second port association relationship, based on the cyclic relationship, as PT-RS port 0 is associated with DMRS port 1. The first port association relationship is that PT-RS port 0 is associated with DMRS port 1, and the terminal device determines the second port association relationship, based on the cyclic relationship, as PT-RS port 0 is associated with DMRS port 2. The first port association relationship is that PT-RS port 0 is associated with DMRS port 0, and the terminal device determines the second port association relationship, based on other modes, as PT-RS port 0 is associated with DMRS ports other than DMRS port 0. The first port association relationship is that PT-RS port 0 is associated with DMRS port 0, and the terminal device determines the second port association relationship, based on other modes, as PT-RS port 0 is associated with DMRS port 2 (jump relationship).

[0212] The first port association relationship and the second port association relationship are both used to indicate the association relationship between a single first reference signal port and a second reference signal port. Or, the first port association relationship and the second port association relationship are both used to indicate the association relationship between two first reference signal ports and a second reference signal port.

[0213] Step 1108: The terminal device sends a first reference signal to two TRPs respectively according to the port association relationship.

[0214] When the terminal device transmits PT-RS to the first TRP uplink, it uses the DMRS port associated with the PT-RS port corresponding to the first TRP. When the terminal device transmits PT-RS to the second TRP uplink, it uses the DMRS port associated with the PT-RS port corresponding to the second TRP.

[0215] In summary, the method provided in this embodiment can configure the association relationship between the first reference signal port and the second reference signal port for the first TRP at the same time through the third indication field, and can configure the association relationship between the first reference signal port and the second reference signal port for the second TRP through the first port association relationship and the first predefined relationship. The first reference signal can be PT-RS, and the second reference signal can be DMRS. The port association relationship configured for multiple TRPs can achieve a trade-off between DCI overhead and PT-RS performance to a certain extent, provide the network with more scheduling flexibility, and ensure the overall optimal system performance.

[0216] (3) Use an indication field to indicate the port association relationship corresponding to the two TRPs. This can be divided into two cases: independent indication and joint indication. Each case is divided into two cases: single PT-RS port and dual PT-RS port. Therefore, there are four cases in total.

[0217] The first type: independent indication, single PT-RS port.

[0218] Fig.12 A flowchart of a method for configuring a reference signal provided by an embodiment of the present application is shown. Fig.12 This method is applied to Figure 6 The communication system shown is used as an example. The method includes:

[0219] Step 1202: The network device sends first information to the terminal device, where the first information includes a third indication field, and the third indication field includes a first field and a second field.

[0220] The third indication domain is used to determine the first port association relationship corresponding to the first TRP and the second port association relationship corresponding to the second TRP. Optionally, the first information is DCI. The first field and the second field are fields configured in the third indication domain.

[0221] Step 1204: The terminal device determines the first port association relationship corresponding to the first TRP based on the first field, and determines the second port association relationship corresponding to the second TRP based on the second field.

[0222] The number of first reference signal ports corresponding to the first TRP and the second TRP is 1 each. The second reference signal port includes a first group of second reference signal ports and a second group of second reference signal ports. Optionally, the first field is the MSB in the third indication field, and the second field is the LSB in the third indication field. Based on the first field (MSB), the terminal device can determine the association relationship between the first reference signal port (PT-RS port 0) corresponding to the first TRP and a second reference signal port in the first group of second reference signal ports. Based on the second field (LSB), the terminal device can determine the association relationship between the first reference signal port (PT-RS port 0) corresponding to the second TRP and a second reference signal port in the second group of second reference signal ports.

[0223] Step 1206: The terminal device sends a first reference signal to two TRPs respectively according to the port association relationship.

[0224] When the terminal device transmits PT-RS to the first TRP uplink, it uses the DMRS port associated with the PT-RS port corresponding to the first TRP. When the terminal device transmits PT-RS to the second TRP uplink, it uses the DMRS port associated with the PT-RS port corresponding to the second TRP.

[0225] In summary, the method provided in this embodiment can configure the association relationship between the first reference signal port and the second reference signal port for multiple TRPs through the first field and the second field in the third indication field. The first reference signal can be PT-RS, and the second reference signal can be DMRS. The port association relationship configured for multiple TRPs can achieve a trade-off between DCI overhead and PT-RS performance to a certain extent, provide the network with more scheduling flexibility, and ensure the overall optimal system performance.

[0226] The second type: joint indication, single PT-RS port.

[0227] Fig.13 A flowchart of a method for configuring a reference signal provided by an embodiment of the present application is shown. Fig.13 This method is applied to Figure 6 The communication system shown is used as an example. The method includes:

[0228] Step 1302: The network device sends first information to the terminal device, where the first information includes a third indication field, and the third indication field includes a first field and a second field.

[0229] The first field and the second field are used as a set of code point sequences to indicate the port correspondence relationship corresponding to the two TRPs. The third indication field is used to determine the first port association relationship corresponding to the first TRP and the second port association relationship corresponding to the second TRP. Optionally, the first information is DCI. The first field and the second field are fields configured in the third indication field.

[0230] The number of first reference signal ports corresponding to the first TRP and the second TRP are both one, and the second reference signal ports include a first group of second reference signal ports and a second group of second reference signal ports.

[0231] Step 1304: The terminal device determines, based on the code point sequence, an association relationship between a first reference signal port corresponding to the first TRP and a second reference signal port in the first group of second reference signal ports.

[0232] Step 1306: The terminal device determines, based on the code point sequence, an association relationship between the first reference signal port corresponding to the second TRP and one of the second reference signal ports in the second group of second reference signal ports.

[0233] The first field and the second field are a set of code point sequences, so the code point sequence includes the first field and the second field. Table 3 shows the relationship between the code point and the indicated port association relationship in the case of a single PT-RS port.

[0234] Table 3

[0235] Code Point First TRP Second TRP 00 0 0 01 0 1 10 1 0 11 1 1

[0236] As shown in Table 3, the terminal device can determine the association relationship between the PT-RS port 0 corresponding to the first TRP and one of the first group of DMRS ports based on the first code point (first field). The terminal device can determine the association relationship between the PT-RS port 0 corresponding to the second TRP and one of the second group of DMRS ports based on the second code point (second field). For example, when the code point is 00, the terminal device determines the association between the PT-RS port 0 corresponding to the first TRP and the first of the first group of DMRS ports, and the association between the PT-RS port 0 corresponding to the second TRP and the first of the second group of DMRS ports. When the code point is 01, the terminal device determines the association between the PT-RS port 0 corresponding to the first TRP and the first of the first group of DMRS ports, and the association between the PT-RS port 0 corresponding to the second TRP and the second of the second group of DMRS ports. Among them, the DMRS port group corresponding to PT-RS port 0 in each TRP is configured or predefined.

[0237] Step 1308: The terminal device sends a first reference signal to two TRPs respectively according to the port association relationship.

[0238] When the terminal device transmits PT-RS to the first TRP uplink, it uses the DMRS port associated with the PT-RS port corresponding to the first TRP. When the terminal device transmits PT-RS to the second TRP uplink, it uses the DMRS port associated with the PT-RS port corresponding to the second TRP.

[0239] In summary, the method provided in this embodiment can realize the association relationship between the first reference signal port and the second reference signal port configured for multiple TRPs respectively through the code point sequence in the third indication field. The first reference signal can be PT-RS, and the second reference signal can be DMRS. The port association relationship configured for multiple TRPs can achieve a trade-off between DCI overhead and PT-RS performance to a certain extent, provide the network with more scheduling flexibility, and ensure the overall optimal system performance.

[0240] The third type: independent indication, dual PT-RS ports.

[0241] Fig.14 A flowchart of a method for configuring a reference signal provided by an embodiment of the present application is shown. Fig.14 This method is applied to Figure 6 The communication system shown is used as an example. The method includes:

[0242] Step 1402: The network device sends first information to the terminal device, the first information includes a third indication field, and the third indication field includes a first field and a second field.

[0243] The third indication domain is used to determine the first port association relationship corresponding to the first TRP and the second port association relationship corresponding to the second TRP. Optionally, the first information is DCI. The first field and the second field are fields configured in the third indication domain.

[0244] Step 1404: The terminal device determines the first port association relationship corresponding to the first TRP based on the first field and the second field, and determines the second port association relationship corresponding to the second TRP based on the first field and the second field.

[0245] The first reference signal ports corresponding to the first TRP and the second TRP both include the first reference signal port 0 and the first reference signal port 1, and the second reference signal port includes the first group of second reference signal ports and the second group of second reference signal ports. Optionally, the first field is the MSB in the third indication field, and the second field is the LSB in the third indication field. According to the first field (MSB), the terminal device can determine the association relationship between the first reference signal port 0 (PT-RS port 0) corresponding to the first TRP and one of the second reference signal ports in the first group of second reference signal ports, and according to the second field (LSB), the terminal device can determine the association relationship between the first reference signal port 1 (PT-RS port 1) corresponding to the first TRP and one of the second reference signal ports in the second group of second reference signal ports. In addition, the terminal device can also determine the association relationship between the first reference signal port 0 and the first reference signal port 1 corresponding to the second TRP and the second reference signal port based on the above rules. That is, the terminal device can determine the association relationship between the PT-RS port 0 corresponding to each TRP and the DMRS port according to the MSB, and the terminal device can determine the association relationship between the PT-RS port 1 corresponding to each TRP and the DMRS port according to the LSB.

[0246] In addition, the terminal device can also determine the port association relationship indicated by the first field and the second field as the first port association relationship corresponding to the first TRP. And determine the second port association relationship corresponding to the second TRP based on the first port association relationship and the second predefined relationship. Among them, the first port association relationship and the second port association relationship are different. After determining the first port association relationship, the terminal device uses the first port association relationship as a reference and can determine the second port association relationship based on the second predefined relationship. The second predefined relationship includes a cyclic relationship (cycling) and other patterns (otherpatten). For example, the terminal device determines the first association between the PT-RS port 0 corresponding to the first TRP and the first group of DMRS ports according to the MSB, and determines the first association between the PT-RS port 1 corresponding to the first TRP and the second group of DMRS ports according to the LSB. After that, the terminal device determines the second association between the PT-RS port 0 corresponding to the second TRP and the first group of DMRS ports based on the cyclic relationship, and determines the second association between the PT-RS port 1 corresponding to the second TRP and the second group of DMRS ports.

[0247] Step 1406: The terminal device sends a first reference signal to two TRPs respectively according to the port association relationship.

[0248] When the terminal device transmits PT-RS to the first TRP uplink, it uses the DMRS port associated with the PT-RS port corresponding to the first TRP. When the terminal device transmits PT-RS to the second TRP uplink, it uses the DMRS port associated with the PT-RS port corresponding to the second TRP.

[0249] In summary, the method provided in this embodiment can configure the association relationship between two first reference signal ports and the second reference signal port for multiple TRPs through the first field and the second field in the third indication field. The first reference signal can be PT-RS, and the second reference signal can be DMRS. The port association relationship configured for multiple TRPs can achieve a trade-off between DCI overhead and PT-RS performance to a certain extent, provide the network with more scheduling flexibility, and ensure the overall optimal system performance.

[0250] The fourth type: joint indication, dual PT-RS ports.

[0251] Fig.15 A flowchart of a method for configuring a reference signal provided by an embodiment of the present application is shown. Fig.15 This method is applied to Figure 6 The communication system shown is used as an example. The method includes:

[0252] Step 1502: The network device sends first information to the terminal device, where the first information includes a third indication field, and the third indication field includes a first field and a second field.

[0253] The third indication domain is used to determine a first port association relationship corresponding to the first TRP and a second port association relationship corresponding to the second TRP. The first field and the second field are used as a set of code point sequences to indicate the port correspondence relationship corresponding to the two TRPs. Optionally, the first information is DCI. The first field and the second field are fields configured in the third indication domain.

[0254] The first reference signal ports corresponding to the first TRP and the second TRP both include a first reference signal port 0 and a first reference signal port 1, and the second reference signal ports include a first group of second reference signal ports and a second group of second reference signal ports.

[0255] It should be noted that the indication fields (first indication field, second indication field, third indication field) in the present application refer to indication fields used to indicate port relationships.

[0256] Step 1504: The terminal device determines, based on the code point sequence, an association relationship between the first reference signal port 0 corresponding to the first TRP and a second reference signal port in the first group of second reference signal ports, and determines an association relationship between the first reference signal port 1 corresponding to the first TRP and a second reference signal port in the second group of second reference signal ports.

[0257] Step 1506: The terminal device determines, based on the code point sequence, an association relationship between the first reference signal port 0 corresponding to the second TRP and a second reference signal port in the first group of second reference signal ports, and determines an association relationship between the first reference signal port 1 corresponding to the second TRP and a second reference signal port in the second group of second reference signal ports.

[0258] The first field and the second field are used as a set of code point sequences, so the code point sequence contains the first field and the second field. According to the first code point (first field), the terminal device can determine the association relationship between the PT-RS port 0 corresponding to the first TRP and one of the first group of DMRS ports. According to the second code point (second field), the terminal device can determine the association relationship between the PT-RS port 1 corresponding to the first TRP and one of the second group of DMRS ports. In addition, the terminal device can also determine the association relationship between the PT-RS port 0 and PT-RS port 1 corresponding to the second TRP and the DMRS port in the above manner. For example, when the code point is 00, the terminal device determines the association between the PT-RS port 0 corresponding to the first TRP and the first one of the first group of DMRS ports, and the association between the PT-RS port 1 corresponding to the first TRP and the first one of the second group of DMRS ports. The terminal device also determines the association between the PT-RS port 0 corresponding to the second TRP and the first one of the first group of DMRS ports, and the association between the PT-RS port 1 corresponding to the second TRP and the first one of the second group of DMRS ports.

[0259] In addition, the terminal device can also determine the port association relationship indicated by the first field and the second field as the first port association relationship corresponding to the first TRP. And determine the second port association relationship corresponding to the second TRP based on the first port association relationship and the third predefined relationship. Wherein, the first port association relationship and the second port association relationship are different.

[0260] Step 1508: The terminal device sends a first reference signal to two TRPs respectively according to the port association relationship.

[0261] When the terminal device transmits PT-RS to the first TRP uplink, it uses the DMRS port associated with the PT-RS port corresponding to the first TRP. When the terminal device transmits PT-RS to the second TRP uplink, it uses the DMRS port associated with the PT-RS port corresponding to the second TRP.

[0262] Optionally, in addition to reporting to the network device whether the terminal device supports the capability of being configured with the second indication domain, it also reports whether it supports the capability of being configured with the first indication domain, and the network device will accordingly configure the first information including the first indication domain for the terminal device. Alternatively, if the terminal device reports whether it supports the capability of being configured with the third indication domain, the network device will accordingly configure the first information including the third indication domain for the terminal device. Alternatively, if the terminal device reports whether it supports the capability of being configured with two indication domains, the network device will accordingly configure the first information including the first indication domain and the second indication domain for the terminal device.

[0263] In summary, the method provided in this embodiment can configure the association relationship between two first reference signal ports and the second reference signal port for multiple TRPs at the same time through the code point sequence in the third indication field. The first reference signal can be PT-RS, and the second reference signal can be DMRS. The port association relationship configured for multiple TRPs can achieve a trade-off between DCI overhead and PT-RS performance to a certain extent, provide the network with more scheduling flexibility, and ensure the overall optimal system performance.

[0264] Fig.16 A structural block diagram of a reference signal configuration device provided by an exemplary embodiment of the present application is shown. The device can be implemented as a terminal device, or implemented as a part of a terminal device. The device includes:

[0265] The receiving module 1601 is used to receive first information sent by a network device, where the first information is used to indicate a port association relationship corresponding to two TRPs, and the port association relationship is used to reflect an association relationship between a first reference signal port and a second reference signal port.

[0266] In an optional design, the two TRPs include a first TRP and a second TRP, and the first information includes a first indication field and a second indication field.

[0267] The first indication field is used to indicate the first port association relationship corresponding to the first TRP.

[0268] The second indication field is used to indicate the second port association relationship corresponding to the second TRP.

[0269] In an optional design, the device further includes:

[0270] The sending module 1602 is used to report the terminal capability to the network device, where the terminal capability is used to indicate whether the terminal device supports the capability configured with the second indication field.

[0271] In an optional design, the first information is sent by the network device when the terminal device supports the capability of being configured with the second indication field.

[0272] In an optional design, the receiving module 1601 is used to receive second information sent by the network device, and the second information is used to indicate that the first information includes two indication fields.

[0273] In an optional design, the two TRPs include a first TRP and a second TRP, the first information includes a third indication field, and the third indication field is used to indicate the port correspondence relationship corresponding to the two TRPs using the same indication field. The device also includes:

[0274] The determination module 1603 is used to determine the first port association relationship corresponding to the first TRP and the second port association relationship corresponding to the second TRP according to the third indication field.

[0275] In an optional design, the determination module 1603 is used to:

[0276] The port association relationship indicated by the third indication field is determined as the first port association relationship corresponding to the first TRP and the second port association relationship corresponding to the second TRP.

[0277] The first port association relationship and the second port association relationship are the same.

[0278] In an optional design, the determination module 1603 is used to:

[0279] The port association relationship indicated by the third indication field is determined as the first port association relationship corresponding to the first TRP.

[0280] According to the first port association relationship and the first predefined relationship, a second port association relationship corresponding to the second TRP is determined.

[0281] The first port association relationship and the second port association relationship are different.

[0282] In an optional design, the third indication field includes a first field and a second field. Determining module 1603 is used to:

[0283] According to the first field, a first port association relationship corresponding to the first TRP is determined, and according to the second field, a second port association relationship corresponding to the second TRP is determined.

[0284] or,

[0285] According to the first field and the second field, the first port association relationship corresponding to the first TRP is determined, and according to the first field and the second field, the second port association relationship corresponding to the second TRP is determined.

[0286] In an optional design, the first reference signal port corresponding to the first TRP and the second TRP is one, and the second reference signal port includes a first group of second reference signal ports and a second group of second reference signal ports. Determination module 1603 is used to:

[0287] According to the first field, an association relationship between a first reference signal port corresponding to the first TRP and a second reference signal port in the first group of second reference signal ports is determined.

[0288] According to the second field, an association relationship between the first reference signal port corresponding to the second TRP and one of the second reference signal ports in the second group of second reference signal ports is determined.

[0289] In an optional design, the first reference signal ports corresponding to the first TRP and the second TRP both include the first reference signal port 0 and the first reference signal port 1, and the second reference signal ports include the first group of second reference signal ports and the second group of second reference signal ports. Determination module 1603 is used to:

[0290] According to the first field, the association relationship between the first reference signal port 0 corresponding to the first TRP and one of the second reference signal ports in the first group of second reference signal ports is determined, and according to the second field, the association relationship between the first reference signal port 1 corresponding to the first TRP and one of the second reference signal ports in the second group of second reference signal ports is determined.

[0291] According to the first field, the association relationship between the first reference signal port 0 corresponding to the second TRP and one of the second reference signal ports in the first group of second reference signal ports is determined, and according to the second field, the association relationship between the first reference signal port 1 corresponding to the second TRP and one of the second reference signal ports in the second group of second reference signal ports is determined.

[0292] In an optional design, the third indication domain includes a first field and a second field, the first field and the second field as a set of code point sequences indicate the port correspondence relationship corresponding to the two TRPs, the first reference signal port corresponding to the first TRP and the second TRP is 1, and the second reference signal port includes a first group of second reference signal ports and a second group of second reference signal ports. Determination module 1603 is used to:

[0293] According to the code point sequence, an association relationship between a first reference signal port corresponding to the first TRP and a second reference signal port in the first group of second reference signal ports is determined.

[0294] Determine, according to the code point sequence, an association relationship between a first reference signal port corresponding to the second TRP and a second reference signal port in the second group of second reference signal ports.

[0295] In an optional design, the third indication domain includes a first field and a second field, the first field and the second field as a set of code point sequences indicate the port correspondence relationship corresponding to the two TRPs, the first reference signal ports corresponding to the first TRP and the second TRP both include the first reference signal port 0 and the first reference signal port 1, and the second reference signal port includes the first group of second reference signal ports and the second group of second reference signal ports. Determination module 1603 is used to:

[0296] According to the code point sequence, an association relationship between the first reference signal port 0 corresponding to the first TRP and a second reference signal port in the first group of second reference signal ports is determined, and an association relationship between the first reference signal port 1 corresponding to the first TRP and a second reference signal port in the second group of second reference signal ports is determined.

[0297] According to the code point sequence, an association relationship between the first reference signal port 0 corresponding to the second TRP and a second reference signal port in the first group of second reference signal ports is determined, and an association relationship between the first reference signal port 1 corresponding to the second TRP and a second reference signal port in the second group of second reference signal ports is determined.

[0298] In an optional design, the determination module 1603 is used to:

[0299] The port association relationship indicated by the first field and the second field is determined as the first port association relationship corresponding to the first TRP.

[0300] A second port association relationship corresponding to the second TRP is determined according to the first port association relationship and the second predefined relationship.

[0301] The first port association relationship and the second port association relationship are different.

[0302] In an optional design, the number of first reference signal ports corresponding to each TRP is 1 or 2.

[0303] In an optional design, the first reference signal is PT-RS, and the second reference signal is DMRS.

[0304] In an optional design, the first information is DCI.

[0305] In an optional design, the second information is RRC information.

[0306] In an optional design, the sending module 1601 is used to:

[0307] According to the port association relationship, the first reference signal is sent to the two TRPs respectively.

[0308] Fig.17 A structural block diagram of a reference signal configuration device provided by an exemplary embodiment of the present application is shown. The device can be implemented as a network device, or implemented as a part of a network device. The device includes:

[0309] The sending module 1701 is used to send first information to the terminal device, where the first information is used to indicate the port association relationship corresponding to two TRPs, and the port association relationship is used to reflect the association relationship between the first reference signal port and the second reference signal port.

[0310] In an optional design, the two TRPs include a first TRP and a second TRP, and the first information includes a first indication field and a second indication field.

[0311] The first indication field is used to indicate the first port association relationship corresponding to the first TRP.

[0312] The second indication field is used to indicate the second port association relationship corresponding to the second TRP.

[0313] In an optional design, the device further includes:

[0314] The receiving module 1702 is used to receive the terminal capabilities reported by the terminal device, where the terminal capabilities are used to indicate whether the terminal device supports the capabilities configured with the second indication domain.

[0315] In an optional design, the sending module 1701 is used to:

[0316] In response to the terminal device supporting the capability of being configured with the second indication field, first information is sent to the terminal device.

[0317] In an optional design, the sending module 1701 is used to:

[0318] Send second information to the terminal device, where the second information is used to indicate that the first information includes two indication fields.

[0319] In an optional design, the two TRPs include a first TRP and a second TRP, the first information includes a third indication field, and the third indication field is used to indicate the port correspondence relationship corresponding to the two TRPs using the same indication field.

[0320] The third indication field is used to indicate a first port association relationship corresponding to the first TRP and a second port association relationship corresponding to the second TRP.

[0321] In an optional design, the port association relationship indicated by the third indication field is used to indicate a first port association relationship corresponding to the first TRP and a second port association relationship corresponding to the second TRP.

[0322] The first port association relationship and the second port association relationship are the same.

[0323] In an optional design, the port association relationship indicated by the third indication field is used to indicate the first port association relationship corresponding to the first TRP. The first port association relationship and the first predefined relationship are used to indicate the second port association relationship corresponding to the second TRP.

[0324] The first port association relationship and the second port association relationship are different.

[0325] In an optional design, the third indication field includes a first field and a second field.

[0326] The first field is used to indicate a first port association relationship corresponding to a first TRP, and the second field is used to indicate a second port association relationship corresponding to a second TRP.

[0327] or,

[0328] The first field and the second field are used to indicate the first port association relationship corresponding to the first TRP. The first field and the second field are also used to indicate the second port association relationship corresponding to the second TRP.

[0329] In an optional design, the number of first reference signal ports corresponding to the first TRP and the second TRP are both one, and the second reference signal ports include a first group of second reference signal ports and a second group of second reference signal ports.

[0330] The first field is used to indicate an association relationship between a first reference signal port corresponding to the first TRP and a second reference signal port in a first group of second reference signal ports.

[0331] The second field is used to indicate an association relationship between the first reference signal port corresponding to the second TRP and a second reference signal port in the second group of second reference signal ports.

[0332] In an optional design, the first reference signal ports corresponding to the first TRP and the second TRP both include a first reference signal port 0 and a first reference signal port 1, and the second reference signal ports include a first group of second reference signal ports and a second group of second reference signal ports.

[0333] The first field is used to indicate the association relationship between the first reference signal port 0 corresponding to the first TRP and one of the second reference signal ports in the first group of second reference signal ports, and the second field is used to indicate the association relationship between the first reference signal port 1 corresponding to the first TRP and one of the second reference signal ports in the second group of second reference signal ports.

[0334] The first field is also used to indicate the association relationship between the first reference signal port 0 corresponding to the second TRP and one of the second reference signal ports in the first group of second reference signal ports, and the second field is also used to indicate the association relationship between the first reference signal port 1 corresponding to the second TRP and one of the second reference signal ports in the second group of second reference signal ports.

[0335] In an optional design, the third indication domain includes a first field and a second field. The first field and the second field as a group of code point sequences indicate the port correspondence between the two TRPs. The number of first reference signal ports corresponding to the first TRP and the second TRP are both 1, and the second reference signal port includes a first group of second reference signal ports and a second group of second reference signal ports.

[0336] A code point sequence is used to indicate an association relationship between a first reference signal port corresponding to a first TRP and a second reference signal port in a first group of second reference signal ports.

[0337] The code point sequence is also used to indicate the association relationship between the first reference signal port corresponding to the second TRP and one of the second reference signal ports in the second group of second reference signal ports.

[0338] In an optional design, the third indication domain includes a first field and a second field, and the first field and the second field as a group of code point sequences indicate the port correspondence corresponding to the two TRPs, and the first reference signal ports corresponding to the first TRP and the second TRP both include first reference signal port 0 and first reference signal port 1, and the second reference signal port includes a first group of second reference signal ports and a second group of second reference signal ports.

[0339] A code point sequence is used to indicate an association relationship between a first reference signal port 0 corresponding to a first TRP and a second reference signal port in a first group of second reference signal ports, and is also used to indicate an association relationship between a first reference signal port 1 corresponding to the first TRP and a second reference signal port in a second group of second reference signal ports.

[0340] The code point sequence is also used to indicate the association relationship between the first reference signal port 0 corresponding to the second TRP and one of the second reference signal ports in the first group of second reference signal ports, and is also used to indicate the association relationship between the first reference signal port 1 corresponding to the second TRP and one of the second reference signal ports in the second group of second reference signal ports.

[0341] In an optional design, the port association relationship indicated by the first field and the second field is used to indicate the first port association relationship corresponding to the first TRP.

[0342] The first port association relationship and the second predefined relationship are used to indicate a second port association relationship corresponding to the second TRP.

[0343] The first port association relationship and the second port association relationship are different.

[0344] In an optional design, the number of first reference signal ports corresponding to each TRP is 1 or 2.

[0345] In an optional design, the first reference signal is PT-RS, and the second reference signal is DMRS.

[0346] In an optional design, the first information is DCI.

[0347] In an optional design, the second information is RRC information.

[0348] In an optional design, receiving module 1702 is used to:

[0349] The first reference signal sent by the terminal device is received through two TRPs respectively according to the port association relationship.

[0350] Fig.18 A schematic diagram of the structure of a communication device (terminal device or network device) provided by an exemplary embodiment of the present application is shown. The communication device includes: a processor 1801, a receiver 1802, a transmitter 1803, a memory 1804 and a bus 1805.

[0351] The processor 1801 includes one or more processing cores. The processor 1801 executes various functional applications and information processing by running software programs and modules.

[0352] The receiver 1802 and the transmitter 1803 may be implemented as a communication component, which may be a communication chip.

[0353] The memory 1804 is connected to the processor 1801 via a bus 1805 .

[0354] The memory 1804 may be used to store at least one instruction, and the processor 1801 may be used to execute the at least one instruction to implement each step in the above method embodiment.

[0355] In addition, the memory 1804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof. The volatile or non-volatile storage device includes but is not limited to: a magnetic disk or an optical disk, an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a static random access memory (SRAM), a read-only memory (ROM), a magnetic memory, a flash memory, and a programmable read-only memory (PROM).

[0356] Among them, when the communication device is implemented as a terminal device, the processor and transceiver in the communication device involved in the embodiments of the present application can execute the steps performed by the communication device in the method shown in any of the above method embodiments, which will not be repeated here.

[0357] In a possible implementation manner, when the communication device is implemented as a terminal device,

[0358] The transceiver is used to receive first information sent by a network device, where the first information is used to indicate a port association relationship corresponding to two TRPs, and the port association relationship is used to reflect an association relationship between a first reference signal port and a second reference signal port.

[0359] Among them, when the communication device is implemented as a network device, the processor and transceiver in the communication device involved in the embodiment of the present application can execute the steps performed by the network device in any of the methods shown above, which will not be repeated here.

[0360] In a possible implementation, when the communication device is implemented as a network device,

[0361] The transceiver is used to send first information to the terminal device, where the first information is used to indicate the port association relationship corresponding to two TRPs, and the port association relationship is used to reflect the association relationship between the first reference signal port and the second reference signal port.

[0362] In an exemplary embodiment, a computer-readable storage medium is also provided, in which at least one instruction, at least one program, a code set or an instruction set is stored, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by a processor to implement the reference signal configuration method performed by a communication device provided in the above-mentioned various method embodiments.

[0363] In an exemplary embodiment, a chip is also provided, which includes a programmable logic circuit and / or program instructions. When the chip runs on a computer device, it is used to implement the reference signal configuration method described in the above aspects.

[0364] In an exemplary embodiment, a computer program product is further provided. When the computer program product is executed on a processor of a computer device, the computer device executes the reference signal configuration method described in the above aspects.

[0365] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0366] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for configuring a reference signal, characterized in that: The method comprises: The network device determines that the maximum number of data layers is greater than 2; The network device sends downlink control information DCI, and the DCI is used to determine a port association relationship, and the port association relationship is used to indicate an association relationship between a first reference signal port and a second reference signal port in different transmission receiving points TRP, wherein the first reference signal port includes a first reference signal port 0 and a first reference signal port 1.

2. The method according to claim 1, characterized in that The different TRPs include a first TRP and a second TRP, and the DCI includes a first indication field and a second indication field; The first indication field is used to indicate a first port association relationship corresponding to the first TRP; The second indication field is used to indicate the second port association relationship corresponding to the second TRP.

3. The method according to claim 2, characterized in that The method further comprises: The network device receives terminal capabilities reported by the terminal device, where the terminal capabilities are used to indicate whether the terminal device supports capabilities configured with the second indication field.

4. The method according to claim 2 or 3, characterized in that: The network device sends the DCI, including: In response to the terminal device supporting the capability of being configured with the second indication field, the network device sends the DCI to the terminal device.

5. The method according to claim 2 or 3, characterized in that: The method further comprises: The network device sends second information, where the second information is used to indicate that the DCI includes two indication fields.

6. The method according to claim 1, characterized in that The different TRPs include a first TRP and a second TRP, the DCI includes a third indication field, and the third indication field is used to indicate the port correspondence relationship corresponding to the different TRPs by using the same indication field; The third indication field is used to indicate a first port association relationship corresponding to the first TRP and a second port association relationship corresponding to the second TRP.

7. The method according to claim 6, characterized in that The port association relationship indicated by the third indication field is used to indicate a first port association relationship corresponding to the first TRP and a second port association relationship corresponding to the second TRP; The first port association relationship is the same as the second port association relationship.

8. The method according to claim 6, characterized in that The port association relationship indicated by the third indication field is used to indicate a first port association relationship corresponding to the first TRP; the first port association relationship and the first predefined relationship are used to indicate a second port association relationship corresponding to the second TRP; The first port association relationship and the second port association relationship are different.

9. The method according to claim 6, characterized in that The third indication field includes a first field and a second field; The first field is used to indicate a first port association relationship corresponding to the first TRP, and the second field is used to indicate a second port association relationship corresponding to the second TRP; or, The first field and the second field are used to indicate a first port association relationship corresponding to the first TRP, and the first field and the second field are also used to indicate a second port association relationship corresponding to the second TRP.

10. The method according to claim 9, characterized in that The second reference signal ports include a first group of second reference signal ports and a second group of second reference signal ports; The first field is used to indicate an association relationship between a first reference signal port 0 corresponding to the first TRP and a second reference signal port in the first group of second reference signal ports, and the second field is used to indicate an association relationship between a first reference signal port 1 corresponding to the first TRP and a second reference signal port in the second group of second reference signal ports; The first field is further used to indicate an association relationship between the first reference signal port 0 corresponding to the second TRP and a second reference signal port in the first group of second reference signal ports, and the second field is further used to indicate an association relationship between the first reference signal port 1 corresponding to the second TRP and a second reference signal port in the second group of second reference signal ports.

11. The method according to claim 9, characterized in that The first field and the second field, as a group of code point sequences, indicate the port correspondence relationship corresponding to the different TRPs, and the second reference signal port includes a first group of second reference signal ports and a second group of second reference signal ports; The code point sequence is used to indicate an association relationship between the first reference signal port 0 corresponding to the first TRP and one of the second reference signal ports in the first group of second reference signal ports, and is also used to indicate an association relationship between the first reference signal port 1 corresponding to the first TRP and one of the second reference signal ports in the second group of second reference signal ports; The code point sequence is also used to indicate an association relationship between the first reference signal port 0 corresponding to the second TRP and one of the second reference signal ports in the first group of second reference signal ports, and is also used to indicate an association relationship between the first reference signal port 1 corresponding to the second TRP and one of the second reference signal ports in the second group of second reference signal ports.

12. The method according to claim 9, characterized in that The port association relationship indicated by the first field and the second field is used to indicate a first port association relationship corresponding to the first TRP; The first port association relationship and the second predefined relationship are used to indicate a second port association relationship corresponding to the second TRP; The first port association relationship and the second port association relationship are different.

13. The method according to any one of claims 1 to 3 and 6 to 12, characterized in that: The first reference signal is a phase tracking reference signal PT-RS, and the second reference signal is a demodulation reference signal DMRS.

14. The method according to claim 5, characterized in that The second information is radio resource control RRC information.

15. The method according to any one of claims 1 to 3 and 6 to 12, characterized in that: The method further comprises: The first reference signal sent by the terminal device is received through the different TRPs respectively according to the port association relationship.

16. A method for configuring a reference signal, characterized in that: The method comprises: The terminal device receives DCI, and the DCI is used to determine a port association relationship, and the port association relationship is used to indicate a different association relationship between a first reference signal port and a second reference signal port in a TRP, wherein the first reference signal port includes a first reference signal port 0 and a first reference signal port 1, and the maximum number of data layers is greater than 2 and is determined by a network device.

17. The method according to claim 16, characterized in that The different TRPs include a first TRP and a second TRP, and the DCI includes a first indication field and a second indication field; The first indication field is used to indicate a first port association relationship corresponding to the first TRP; The second indication field is used to indicate the second port association relationship corresponding to the second TRP.

18. The method according to claim 17, characterized in that The method further comprises: The terminal device reports terminal capabilities to the network device, where the terminal capabilities are used to indicate whether the terminal device supports capabilities configured with the second indication domain.

19. The method according to claim 17 or 18, characterized in that The DCI is sent by the network device when the terminal device supports the capability of being configured with the second indication field.

20. The method according to claim 17 or 18, characterized in that The method further comprises: The terminal device receives second information, where the second information is used to indicate that the DCI includes two indication fields.

21. The method according to claim 16, characterized in that The different TRPs include a first TRP and a second TRP, the DCI includes a third indication field, and the third indication field is used to indicate the port correspondence relationship corresponding to the different TRPs by using the same indication field; The method further comprises: According to the third indication field, a first port association relationship corresponding to the first TRP and a second port association relationship corresponding to the second TRP are determined.

22. The method according to claim 21, characterized in that The determining, according to the third indication field, a first port association relationship corresponding to the first TRP and a second port association relationship corresponding to the second TRP includes: Determine the port association relationship indicated by the third indication field as a first port association relationship corresponding to the first TRP and a second port association relationship corresponding to the second TRP; The first port association relationship is the same as the second port association relationship.

23. The method according to claim 21, characterized in that The determining, according to the third indication field, a first port association relationship corresponding to the first TRP and a second port association relationship corresponding to the second TRP includes: Determine the port association relationship indicated by the third indication field as the first port association relationship corresponding to the first TRP; Determine, according to the first port association relationship and the first predefined relationship, a second port association relationship corresponding to the second TRP; The first port association relationship and the second port association relationship are different.

24. The method according to claim 21, characterized in that The third indication field includes a first field and a second field; The determining, according to the third indication field, a first port association relationship corresponding to the first TRP and a second port association relationship corresponding to the second TRP includes: Determine, according to the first field, a first port association relationship corresponding to the first TRP, and determine, according to the second field, a second port association relationship corresponding to the second TRP; or, According to the first field and the second field, a first port association relationship corresponding to the first TRP is determined, and according to the first field and the second field, a second port association relationship corresponding to the second TRP is determined.

25. The method according to claim 24, characterized in that The second reference signal ports include a first group of second reference signal ports and a second group of second reference signal ports; The determining, according to the first field and the second field, a first port association relationship corresponding to the first TRP, and determining, according to the first field and the second field, a second port association relationship corresponding to the second TRP, includes: Determine, according to the first field, an association relationship between a first reference signal port 0 corresponding to the first TRP and a second reference signal port in the first group of second reference signal ports, and determine, according to the second field, an association relationship between a first reference signal port 1 corresponding to the first TRP and a second reference signal port in the second group of second reference signal ports; According to the first field, determine the association relationship between the first reference signal port 0 corresponding to the second TRP and one of the second reference signal ports in the first group of second reference signal ports, and according to the second field, determine the association relationship between the first reference signal port 1 corresponding to the second TRP and one of the second reference signal ports in the second group of second reference signal ports.

26. The method according to claim 24, characterized in that The first field and the second field, as a group of code point sequences, indicate the port correspondence relationship corresponding to the different TRPs, and the second reference signal port includes a first group of second reference signal ports and a second group of second reference signal ports; The determining, according to the first field and the second field, a first port association relationship corresponding to the first TRP, and determining, according to the first field and the second field, a second port association relationship corresponding to the second TRP, includes: Determine, according to the code point sequence, an association relationship between a first reference signal port 0 corresponding to the first TRP and a second reference signal port in the first group of second reference signal ports, and determine an association relationship between a first reference signal port 1 corresponding to the first TRP and a second reference signal port in the second group of second reference signal ports; According to the code point sequence, an association relationship between the first reference signal port 0 corresponding to the second TRP and a second reference signal port in the first group of second reference signal ports is determined, and an association relationship between the first reference signal port 1 corresponding to the second TRP and a second reference signal port in the second group of second reference signal ports is determined.

27. The method according to claim 24, characterized in that The determining, according to the first field and the second field, a first port association relationship corresponding to the first TRP, and determining, according to the first field and the second field, a second port association relationship corresponding to the second TRP, includes: Determine the port association relationship indicated by the first field and the second field as the first port association relationship corresponding to the first TRP; Determine a second port association relationship corresponding to the second TRP according to the first port association relationship and the second predefined relationship; The first port association relationship and the second port association relationship are different.

28. The method according to any one of claims 16 to 18 and 21 to 27, characterized in that The first reference signal is PT-RS, and the second reference signal is DMRS.

29. The method according to claim 20, characterized in that The second information is RRC information.

30. The method according to any one of claims 16 to 18 and 21 to 27, characterized in that The method further comprises: The terminal device sends the first reference signal to the different TRPs respectively according to the port association relationship.

31. A reference signal configuration device, characterized in that: The device comprises: A determination module, used to determine that the maximum number of data layers is greater than 2; A sending module is used to send DCI, where the DCI is used to determine a port association relationship, where the port association relationship is used to indicate an association relationship between a first reference signal port and a second reference signal port in different TRPs, wherein the first reference signal port includes a first reference signal port 0 and a first reference signal port 1.

32. A reference signal configuration device, characterized in that: The device comprises: A receiving module is used to receive DCI, where the DCI is used to determine a port association relationship, where the port association relationship is used to indicate a different association relationship between a first reference signal port and a second reference signal port in a TRP, wherein the first reference signal port includes a first reference signal port 0 and a first reference signal port 1, and the maximum number of data layers is greater than 2 and is determined by a network device.

33. A network device, characterized in that: The network device comprises: a processor and a transceiver connected to the processor; wherein, The processor is used to determine that the maximum number of data layers is greater than 2; the transceiver is used to send DCI, the DCI is used to determine the port association relationship, the port association relationship is used to indicate the association relationship between the first reference signal port and the second reference signal port in different TRPs, wherein the first reference signal port includes the first reference signal port 0 and the first reference signal port 1.

34. A terminal device, characterized in that: The terminal device comprises: a processor and a transceiver connected to the processor; wherein, The transceiver is used to receive DCI, and the DCI is used to determine a port association relationship, and the port association relationship is used to indicate a different association relationship between a first reference signal port and a second reference signal port in a TRP, wherein the first reference signal port includes a first reference signal port 0 and a first reference signal port 1, and the maximum number of data layers is greater than 2 and is determined by a network device.

35. A computer-readable storage medium, characterized in that: The readable storage medium stores executable instructions, and the executable instructions are loaded and executed by a processor to implement the reference signal configuration method according to any one of claims 1 to 30.

36. A chip, characterized in that: The chip includes a programmable logic circuit or a program, and the chip is used to implement the reference signal configuration method as described in any one of claims 1 to 30.

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