Data transmission method and device, related equipment and storage medium

Abstract

The invention discloses a data transmission method and device, related equipment and a storage medium, and the method comprises the steps that a first terminal receives first information issued by network equipment; wherein the first information is used for indicating at least two DMRS ports and / or at least two pieces of TCI state information; the at least two DMRS ports and / or the at least two pieces of TCI state information are / is used for receiving a first PDSCH scheduled by the first information.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a data transmission method, apparatus, related equipment and storage medium. Background Art

[0002] In the related technology, a collaborative terminal (CUE) with a relatively close distance is used to assist a serving terminal (SUE) in downlink data transmission, thereby helping the SUE to achieve a higher downlink transmission rate. However, in the collaborative reception scenario of non-coherent joint reception (NCJR), the CUE and SUE may not be able to correctly receive the physical downlink shared channel (PDSCH). Summary of the invention

[0003] To solve the related technical problems, the embodiments of the present application provide a data transmission method, apparatus, related equipment and storage medium.

[0004] The technical solution of the embodiment of the present application is implemented as follows:

[0005] The present application provides a data transmission method, which is applied to a first terminal, and the method includes:

[0006] Receive the first information sent by the network device; wherein,

[0007] The first information is used to indicate at least two demodulation reference signal (DMRS) ports and / or at least two transmission configuration indication (TCI) status information; the at least two DMRS ports and / or the at least two TCI status information are used to receive the first physical downlink shared channel (PDSCH, Physical Downlink Shared Channel) scheduled by the first information.

[0008] In the above scheme, the method further comprises:

[0009] Based on the first information, second information and / or third information is sent to the second terminal; wherein,

[0010] The second information indicates at least one first DMRS port among the at least two DMRS ports; and the third information indicates at least one first TCI state information among the at least two TCI state information.

[0011] In the above solution, the first information includes one of the following:

[0012] a first antenna port field and a second antenna port field;

[0013] The third antenna port domain; wherein,

[0014] The first antenna port field indicates at least one first DMRS port, the second antenna port field indicates at least one second DMRS port; and the third antenna port field indicates at least one first DMRS port and at least one second DMRS port.

[0015] In the above solution, the first information includes one of the following:

[0016] A first transmission configuration indication field and a second transmission configuration indication field;

[0017] The third transmission configuration indication field; wherein,

[0018] The first transmission configuration indication field indicates at least one first TCI state information, the second transmission configuration indication field indicates at least one second TCI state information; the third transmission configuration indication field indicates at least one first TCI state information and at least one second TCI state information.

[0019] In the above scheme, the method further comprises:

[0020] receiving a first PDSCH sent by the second terminal; wherein,

[0021] The first PDSCH sent by the second terminal is received based on the second information and / or the third information.

[0022] In the above scheme, the method further comprises:

[0023] Receiving a first PDSCH based on at least one of the following:

[0024] at least one second DMRS port of the at least two DMRS ports;

[0025] At least one second TCI status information among the at least two TCI status information.

[0026] In the above solution, at least one first TCI state information corresponds to at least one first DMRS port, and / or at least one second TCI state information corresponds to at least one second DMRS port.

[0027] In the above solution, the TCI state indicated by at least one first TCI state information is used to correspond to the quasi-co-location information indicating at least one first DMRS port, and / or

[0028] The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information indicating the at least one second DMRS port.

[0029] In the above scheme, the TCI state indicated by at least one first TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one first DMRS port, and / or

[0030] The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one second DMRS port.

[0031] The embodiment of the present application further provides a data transmission method, which is applied to a second terminal, and the method includes:

[0032] receiving the second information and / or the third information sent by the first terminal; wherein,

[0033] The second information and / or the third information are sent based on the first information sent by the network device to the first terminal; the first information is used to indicate at least two DMRS ports and / or at least two TCI status information; the at least two DMRS ports and / or the at least two TCI status information are used to receive the first PDSCH scheduled by the first information; the second information indicates at least one first DMRS port among the at least two DMRS ports; the third information indicates at least one first TCI status information among the at least two TCI status information.

[0034] In the above solution, at least one first TCI state information corresponds to at least one first DMRS port.

[0035] In the above solution, the TCI state indicated by at least one first TCI state information is used to correspond to the quasi-co-location information indicating at least one first DMRS port.

[0036] In the above solution, the TCI state indicated by at least one first TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one first DMRS port.

[0037] In the above scheme, the method further comprises:

[0038] Based on the second information and / or the third information, receiving a first PDSCH;

[0039] The first PDSCH is sent to the first terminal.

[0040] The present application also provides a data transmission method, which is applied to a network device, and the method includes:

[0041] Sending first information to the first terminal, wherein:

[0042] The first information is used to indicate at least two DMRS ports and / or at least two TCI state information; the at least two DMRS ports and / or the at least two TCI state information are used to receive the first PDSCH scheduled by the first information.

[0043] In the above solution, the first information includes one of the following:

[0044] a first antenna port field and a second antenna port field;

[0045] The third antenna port domain; wherein,

[0046] The first antenna port field indicates at least one first DMRS port, the second antenna port field indicates at least one second DMRS port; and the third antenna port field indicates at least one first DMRS port and at least one second DMRS port.

[0047] In the above solution, the first information includes one of the following:

[0048] A first transmission configuration indication field and a second transmission configuration indication field;

[0049] The third transmission configuration indication field; wherein,

[0050] The first transmission configuration indication field indicates at least one first TCI state information, the second transmission configuration indication field indicates at least one second TCI state information; the third transmission configuration indication field indicates at least one first TCI state information and at least one second TCI state information.

[0051] In the above solution, at least one first TCI state information corresponds to at least one first DMRS port, and / or at least one second TCI state information corresponds to at least one second DMRS port.

[0052] In the above solution, the TCI state indicated by at least one first TCI state information is used to correspond to the quasi-co-location information indicating at least one first DMRS port, and / or,

[0053] The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information indicating the at least one second DMRS port.

[0054] In the above scheme, the TCI state indicated by at least one first TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one first DMRS port, and / or

[0055] The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one second DMRS port.

[0056] The present application also provides a data transmission device, including:

[0057] The first receiving unit is used to receive the first information sent by the network device; wherein,

[0058] The first information is used to indicate at least two DMRS ports and / or at least two TCI state information; the at least two DMRS ports and / or the at least two TCI state information are used to receive the first PDSCH scheduled by the first information.

[0059] The present application also provides a data transmission device, including:

[0060] The second receiving unit is used to receive the second information and / or the third information sent by the first terminal; wherein,

[0061] The second information and / or the third information are sent based on the first information sent by the network device to the first terminal; the first information is used to indicate at least two DMRS ports and / or at least two TCI status information; the at least two DMRS ports and / or the at least two TCI status information are used to receive the first PDSCH scheduled by the first information; the second information indicates at least one first DMRS port among the at least two DMRS ports; the third information indicates at least one first TCI status information among the at least two TCI status information.

[0062] The present application also provides a data transmission device, including:

[0063] The first sending unit is used to send first information to the first terminal, wherein:

[0064] The first information is used to indicate at least two DMRS ports and / or at least two TCI state information; the at least two DMRS ports and / or the at least two TCI state information are used to receive the first PDSCH scheduled by the first information.

[0065] The embodiment of the present application further provides a first terminal, including a first processor and a first communication interface, wherein:

[0066] The first communication interface is used to receive the first information sent by the network device; wherein,

[0067] The first information is used to indicate at least two DMRS ports and / or at least two TCI state information; the at least two DMRS ports and / or the at least two TCI state information are used to receive the first PDSCH scheduled by the first information.

[0068] The embodiment of the present application further provides a second terminal, including a second processor and a second communication interface, wherein:

[0069] The second communication interface is used to receive the second information and / or the third information sent by the first terminal;

[0070] Among them, the second information and / or the third information are sent based on the first information sent by the network device to the first terminal; the first information is used to indicate at least two DMRS ports and / or at least two TCI status information; the at least two DMRS ports and / or the at least two TCI status information are used to receive the first PDSCH scheduled by the first information; the second information indicates at least one first DMRS port among the at least two DMRS ports; the third information indicates at least one first TCI status information among the at least two TCI status information.

[0071] The embodiment of the present application further provides a network device, including a third processor and a third communication interface, wherein:

[0072] The third communication interface is used to send the first information to the first terminal, wherein:

[0073] The first information is used to indicate at least two DMRS ports and / or at least two TCI state information; the at least two DMRS ports and / or the at least two TCI state information are used to receive the first PDSCH scheduled by the first information.

[0074] The embodiment of the present application further provides a communication device, the communication device comprising a first terminal, a second terminal or a network device, the communication device comprising a processor and a memory for storing a computer program that can be run on the processor,

[0075] Wherein, when the processor is used to run the computer program, it executes the steps of any method on the first terminal side, or executes the steps of any method on the second terminal side, or executes the steps of any method on the network device side.

[0076] An embodiment of the present application also provides a storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the computer program implements the steps of any method on the first terminal side, or implements the steps of any method on the second terminal side, or implements the steps of any method on the network device side.

[0077] In the data transmission method, device, related equipment and storage medium provided in the embodiment of the present application, the network device sends the first information to the first terminal, the first information is used to indicate at least two DMRS ports and / or at least two TCI status information; the at least two DMRS ports and / or the at least two TCI status information are used to receive the first PDSCH scheduled by the first information; the first terminal receives the first information sent by the network device; the second terminal receives the second information and / or the third information sent by the first terminal; wherein the second information and / or the third information are sent based on the first information sent by the network device to the first terminal; the second information indicates at least one first DMRS port among the at least two DMRS ports; the third information indicates at least one first TCI status information among the at least two TCI status information. It can be seen that in the embodiment of the present application, the network device indicates different DMRS ports and / or different TCI status information to the first terminal, so that the first terminal and the corresponding second terminal can respectively use different DMRS ports and / or different TCI status information to collaborate to receive the first PDSCH. The above scheme enables the first terminal and the second terminal to correctly receive the first PDSCH, thereby improving the transmission rate and transmission reliability of the PDSCH. BRIEF DESCRIPTION OF THE DRAWINGS

[0078] Figure 1 This is an example diagram of terminal downlink cooperative transmission in the related art;

[0079] Figure 2 A schematic diagram of a data transmission method implementation flow in an embodiment of the present application;

[0080] Figure 3 A schematic diagram of a data transmission method implementation flow in an embodiment of the present application;

[0081] Figure 4 A schematic diagram of a data transmission method implementation flow in an embodiment of the present application;

[0082] Figure 5 This is a schematic diagram of an interactive process of a data transmission method according to an embodiment of the present application;

[0083] Figure 6 This is a schematic diagram of the structure of a data transmission device according to an embodiment of the present application;

[0084] Figure 7 This is a schematic diagram of the structure of a data transmission device according to an embodiment of the present application;

[0085] Figure 8 This is a schematic diagram of the structure of a data transmission device according to an embodiment of the present application;

[0086] Fig. 9 This is a schematic diagram of the first terminal structure of an embodiment of the present application;

[0087] Fig.10 This is a schematic diagram of the second terminal structure of the embodiment of the present application;

[0088] Fig.11 This is a schematic diagram of the network device structure of an embodiment of the present application. DETAILED DESCRIPTION

[0089] In the downlink data transmission of the existing fifth-generation mobile communication technology (5G, 5th Generation Mobile Communication Technology), the user's downlink transmission rate is limited by the receiving antenna, channel conditions, etc. of a single terminal. The terminal is also called user equipment (UE, User Equipment). When the user is at the edge of the cell, the user's transmission rate is usually not guaranteed; especially in the industrial Internet scenario, the transmission reliability requirements for the terminal are high. The base station usually chooses a more conservative scheduling strategy to ensure the reliability of transmission, but the user's transmission rate is usually low at this time, and it is impossible to take into account both the transmission rate and the transmission reliability.

[0090] For some industry terminals, a collaborative terminal (CUE, Collaborative UE) that is closer can be used to assist the service terminal (SUE, Serving UE) in downlink data transmission, thereby helping the SUE to achieve a higher downlink transmission rate. The SUE is also called the target terminal. Figure 1 The following is an example of cooperative downlink transmission between terminals. Cooperative downlink transmission mainly uses the antenna capability of CUE to help SUE receive downlink data. Both SUE and CUE receive their own data, and then CUE sends the received data to SUE via the side link. Terminals cooperate in transmission via the side link, or are aggregated together via wires when leaving the factory. Since the terminals are closely spaced, this transmission has the characteristics of large bandwidth and high rate.

[0091] In addition, in the terminal cooperative reception scenario, the data streams received by each terminal together constitute a transport block (TB), and the terminal cooperative reception can be divided into coherent joint reception (CJR) and NCJR. For CJR, each of the multiple terminals receives the same data stream; for NCJR, each of the multiple terminals independently receives a different data stream. However, in the related art, in the cooperative reception scenario of NCJR, CUE and SUE may not be able to correctly receive PDSCH. In this scenario, how to indicate the DMRS and beam of PDSCH so that SUE and CUE can cooperate to receive PDSCH transmitted by the base station is an urgent problem to be solved.

[0092] Based on this, in each embodiment of the present application, the network device sends the first information to the first terminal, and the first information is used to indicate at least two DMRS ports and / or at least two TCI state information; the at least two DMRS ports and / or the at least two TCI state information are used to receive the first PDSCH scheduled by the first information; the first terminal receives the first information sent by the network device; the second terminal receives the second information and / or the third information sent by the first terminal; wherein the second information and / or the third information are sent based on the first information sent by the network device to the first terminal; the second information indicates at least one first DMRS port among the at least two DMRS ports; the third information indicates at least one first TCI state information among the at least two TCI state information. It can be seen that in the embodiment of the present application, the network device indicates different DMRS ports and / or different TCI state information to the first terminal, so that the first terminal and the corresponding second terminal can respectively use different DMRS ports and / or different TCI state information to collaborate to receive the first PDSCH. The above scheme enables the first terminal and the second terminal to correctly receive the first PDSCH, thereby improving the transmission rate and transmission reliability of the PDSCH.

[0093] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0094] The embodiment of the present application provides a data transmission method, which is applied to a first terminal, where the first terminal represents a SUE, including a mobile phone, a tablet computer, a laptop computer, a wearable device, and other terminals. Figure 2 As shown, the method includes:

[0095] Step 201: Receive first information sent by a network device.

[0096] The first information is used to indicate at least two DMRS ports and / or at least two TCI state information; the at least two DMRS ports and / or the at least two TCI state information are used to receive the first PDSCH scheduled by the first information.

[0097] Here, the first information can be understood as indication information, and the first information can be any of the following: downlink control information (DCI), radio resource control (RRC) signaling, and medium access control layer (MAC) control element (CE). Among them, each of the at least two DMRS ports is different, and each of the at least two TCI state information is different.

[0098] In actual application, at least two DMRS ports include at least one first DMRS port and at least one second DMRS port, and the first DMRS is different from the second DMRS; at least two TCI state information include at least one first TCI state information and at least one second TCI state information, and the first TCI state information is different from the second TCI state information. The first DMRS port and / or the first TCI state information are used for the second terminal to receive the first PDSCH; the second DMRS port and / or the second TCI state information are used for the first terminal to receive the first PDSCH. Alternatively, the first DMRS port and / or the first TCI state information are used for the first terminal to receive the first PDSCH; the second DMRS port and / or the second TCI state information are used for the second terminal to receive the first PDSCH. The first terminal and the corresponding second terminal jointly receive the first PDSCH (the same PDSCH) scheduled by the first information. The number of second terminals corresponding to the first terminal is greater than or equal to 1.

[0099] Among them, the second terminal represents CUE, including mobile phones, tablet computers, laptops, wearable devices, desktop computers and other terminals.

[0100] It should be noted that the network device can use the DRMS ​​indication method of the PDSCH of NCJR to indicate at least two DMRS ports and / or at least two TCI status information; the network device can also use the Beam indication method of the PDSCH of CJR or NCJR to indicate at least two TCI status information.

[0101] In order to enable the first terminal and the second terminal to correctly receive the first PDSCH, in one embodiment, the first information includes one of the following:

[0102] a first antenna port field and a second antenna port field;

[0103] The third antenna port domain; wherein,

[0104] The first antenna port field indicates at least one first DMRS port, the second antenna port field indicates at least one second DMRS port; and the third antenna port field indicates at least one first DMRS port and at least one second DMRS port.

[0105] Here, the network device may use DRMS ​​indication mode 1 of PDSCH of NCJR to indicate at least two DMRS ports. At this time, the first information includes a first antenna port field and a second antenna port field. The antenna port field is also called Antenna port(s) field.

[0106] The network device may use DRMS ​​indication mode 2 of the PDSCH of NCJR to indicate at least two DMRS ports, and at this time, the first information includes a third antenna port field. The at least two DMRS ports indicated by the third antenna port field are divided into two parts, one part of the DMRS ports includes at least one first DMRS port, and the other part of the DMRS ports includes at least one second DMRS port.

[0107] In this embodiment, the network device can flexibly use the corresponding DMRS indication method to indicate the DMRS port according to the downlink channel status of multiple terminals, which can effectively ensure that the transmission of PDSCH can adapt to the different downlink channel status of multiple terminals and ensure the downlink rate of PDSCH.

[0108] In order to enable the first terminal and the second terminal to correctly receive the first PDSCH, in one embodiment, the first information includes one of the following:

[0109] A first transmission configuration indication field and a second transmission configuration indication field;

[0110] The third transmission configuration indication field; wherein,

[0111] The first transmission configuration indication field indicates at least one first TCI state information, the second transmission configuration indication field indicates at least one second TCI state information; the third transmission configuration indication field indicates at least one first TCI state information and at least one second TCI state information.

[0112] Here, when the network device adopts DRMS ​​indication mode 1 of PDSCH of NCJR to indicate at least two DMRS ports, the first information further includes a first transmission configuration indication field and a second transmission configuration indication field, and the transmission configuration indication field is also called a TCI field.

[0113] When the network device adopts DRMS ​​indication mode 2 of PDSCH of NCJR to indicate at least two DMRS ports, the first information also includes a third transmission configuration indication field, and the third transmission configuration indication field indicates at least one first TCI state information and at least one second TCI state information.

[0114] The network device can use the Beam indication mode 1 of the PDSCH of CJR or NCJR to indicate at least two TCI status information. At this time, the first information only includes the first transmission configuration indication field and the second transmission configuration indication field.

[0115] The network device can use the Beam indication method 2 of the PDSCH of CJR or NCJR to indicate at least two TCI status information. At this time, the first information only includes the third transmission configuration indication field, and the third transmission configuration indication field indicates at least one first TCI status information and at least one second TCI status information.

[0116] In this embodiment, two collaborative reception scenarios, NCJR and CJR, can be supported, which improves the downlink transmission rate and transmission reliability. In addition, the flexible DMRS indication method can effectively ensure that the transmission of PDSCH can adapt to the different downlink channel states of multiple terminals to ensure the downlink rate; the flexible Beam indication method enables multi-terminal collaborative technology to support different collaborative transmission scenarios. For example, in some scenarios, SUE and CUE are aggregated together through wires and are relatively close in position. SUE and CUE each need a TCI status information; while in other scenarios, SUE and CUE cooperate in transmission through side links, and SUE and CUE may each need at least two TCI status information.

[0117] In order to ensure that the first terminal and the second terminal can correctly receive PDSCH and reduce signaling overhead, for the DRMS ​​indication mode 1 or indication mode 2 of the PDSCH of NCJR, in one embodiment, at least one first TCI state information corresponds to at least one first DMRS port, and / or, at least one second TCI state information corresponds to at least one second DMRS port.

[0118] Here, one first TCI state information may correspond to at least one first DMRS port; at least one first TCI state information may correspond to one first DMRS port, or may correspond to at least two first DMRS ports. In other words, the correspondence between the first TCI state information and the first DMRS port may be a one-to-one relationship, a one-to-many relationship, or a many-to-one relationship.

[0119] In order to ensure that the terminal can correctly demodulate the DMRS and correctly demodulate the PDSCH corresponding to the DMRS, and reduce the signaling overhead, in one embodiment, the TCI state indicated by at least one first TCI state information is used to correspond to the quasi-co-location information indicating at least one first DMRS port, and / or

[0120] The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information indicating the at least one second DMRS port.

[0121] Here, in the case where there is a corresponding relationship between the first TCI state information and the first DMRS port, the TCI state indicated by the first TCI state information is used to indicate the quasi-co-location information of at least one first DMRS port corresponding to the first TCI state information, and the quasi-co-location information represents that the reference signal associated with the TCI state indicated by the first TCI state information has a quasi-co-location relationship with the first DMRS port corresponding to the first TCI state information.

[0122] In the case that there is a corresponding relationship between the second TCI state information and the second DMRS port, the TCI state indicated by the second TCI state information is used to indicate the quasi-co-location information of at least one second DMRS port corresponding to the second TCI state information, and the quasi-co-location information represents that the reference signal associated with the TCI state indicated by the second TCI state information has a quasi-co-location relationship with the second DMRS port corresponding to the second TCI state information.

[0123] In order to ensure that the terminal can correctly demodulate the DMRS and correctly demodulate the PDSCH corresponding to the DMRS, and reduce the signaling overhead, in one embodiment, the TCI state indicated by at least one first TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one first DMRS port, and / or

[0124] The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one second DMRS port.

[0125] Here, in the case where there is a corresponding relationship between the first TCI state information and the first DMRS port, the TCI state indicated by the first TCI state information is used to indicate the quasi-co-location information of the PDSCH antenna port corresponding to at least one first DMRS port corresponding to the first TCI state information. The quasi-co-location information represents that the reference signal associated with the TCI state indicated by the first TCI state information has a quasi-co-location relationship with the PDSCH antenna port corresponding to the first DMRS port corresponding to the first TCI state information.

[0126] In the case where there is a corresponding relationship between the second TCI state information and the second DMRS port, the TCI state indicated by the second TCI state information is used to indicate the quasi-co-location information of the PDSCH antenna port corresponding to at least one second DMRS port corresponding to the second TCI state information. The quasi-co-location information represents that the reference signal associated with the TCI state indicated by the second TCI state information has a quasi-co-location relationship with the PDSCH antenna port corresponding to the second DMRS port corresponding to the second TCI state information.

[0127] In order to enable the second terminal corresponding to the first terminal to correctly receive the PDSCH, in one embodiment, after receiving the first information sent by the network device, the method further includes:

[0128] Based on the first information, second information and / or third information is sent to the second terminal; wherein,

[0129] The second information indicates at least one first DMRS port among the at least two DMRS ports; and the third information indicates at least one first TCI state information among the at least two TCI state information.

[0130] Here, the first terminal determines at least one first DMRS port among the at least two DMRS ports indicated by the first information, and sends second information to the second terminal corresponding to the first terminal; and / or determines at least one first TCI state information among the at least two TCI state information indicated by the first information, and sends third information to the second terminal corresponding to the first terminal.

[0131] It should be noted that in an embodiment of the present application, the first terminal indicates at least one first DMRS port and / or at least one first TCI state information to the corresponding second terminal, so that the first terminal receives PDSCH based on at least one second DMRS port and / or at least one second TCI state information; in other embodiments, the first terminal may also indicate at least one second DMRS port and / or at least one second TCI state information to the corresponding second terminal to receive PDSCH, so that the first terminal receives PDSCH based on at least one first DMRS port and / or at least one first TCI state information.

[0132] In actual application, the second information is determined based on the first antenna port domain or the third antenna port domain, and the third information is determined based on the first transmission configuration indication domain or the third transmission configuration indication domain. Alternatively, the third information is determined based on the first transmission configuration indication domain and the second transmission configuration indication domain, or the third information is determined based on the third transmission configuration indication domain.

[0133] In one embodiment, after sending the second information and / or the third information to the second terminal, the method further includes:

[0134] receiving a first PDSCH sent by the second terminal; wherein,

[0135] The first PDSCH sent by the second terminal is received based on the second information and / or the third information.

[0136] Here, the first terminal receives the first PDSCH sent by the second terminal, and the first PDSCH sent by the second terminal is received based on the second information and / or the third information.

[0137] In this embodiment, the first terminal receives the first PDSCH that is cooperatively received by the corresponding second terminal, so as to improve the reception efficiency of the first PDSCH.

[0138] In one embodiment, after receiving the first information sent by the network device, the method further includes:

[0139] Receiving a first PDSCH based on at least one of the following:

[0140] at least one second DMRS port of the at least two DMRS ports;

[0141] At least one second TCI status information among the at least two TCI status information.

[0142] Here, the first terminal can use at least one second DMRS port to receive the first PDSCH, the first terminal can also receive the first PDSCH based on at least one second DMRS port and at least one second TCI state information, and the first terminal can also receive the first PDSCH based on the TCI state indicated by at least one second TCI state information.

[0143] It should be noted that the first PDSCH received by the first terminal and the first PDSCH received by the second terminal constitute a complete first PDSCH.

[0144] Correspondingly, the embodiment of the present application also provides a data transmission method, which is applied to a second terminal, where the second terminal represents a CUE, including a mobile phone, a tablet computer, a laptop computer, a wearable device, a desktop computer, and other terminals. Figure 3 As shown, the method includes:

[0145] Step 301: Receive second information and / or third information sent by a first terminal.

[0146] Among them, the second information and / or the third information are sent based on the first information sent by the network device to the first terminal; the first information is used to indicate at least two DMRS ports and / or at least two TCI status information; the at least two DMRS ports and / or the at least two TCI status information are used to receive the first PDSCH scheduled by the first information; the second information indicates at least one first DMRS port among the at least two DMRS ports; the third information indicates at least one first TCI status information among the at least two TCI status information.

[0147] In order to ensure that the first terminal and the second terminal can correctly receive the PDSCH and reduce signaling overhead, in one embodiment, at least one first TCI state information corresponds to at least one first DMRS port.

[0148] When there is a corresponding relationship between the first TCI state information and the first DMRS port, in order to enable the second terminal to correctly demodulate the DMRS and correctly demodulate the PDSCH corresponding to the DMRS, thereby correctly receiving the first PDSCH, in one embodiment, the TCI state indicated by at least one first TCI state information is used to correspond to the quasi-co-location information indicating at least one first DMRS port.

[0149] In order to ensure that the second terminal can correctly demodulate DMRS and correctly demodulate the PDSCH corresponding to DMRS, and reduce signaling overhead, in one embodiment, the TCI state indicated by at least one first TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to at least one first DMRS port.

[0150] In one embodiment, after receiving the second information and / or the third information sent by the first terminal, the method further includes:

[0151] Based on the second information and / or the third information, receiving a first PDSCH;

[0152] The first PDSCH is sent to the first terminal.

[0153] Here, the second terminal uses at least one first DMRS port indicated by the second information to receive the first PDSCH, and / or receives the first PDSCH based on the TCI state indicated by at least one first TCI state information indicated by the third information; and sends the received first PDSCH to the first terminal.

[0154] In this embodiment, the second terminal assists the first terminal in receiving the first PDSCH based on the first DMRS port and / or the first TCI state information, which can improve the downlink transmission rate and transmission reliability of the PDSCH, and improve the efficiency of the first terminal in receiving the first PDSCH.

[0155] Correspondingly, the embodiment of the present application also provides a data transmission method, which is applied to a network device, and the network device includes a base station. Figure 4 As shown, the method includes:

[0156] Step 401: Sending a first message to a first terminal, wherein:

[0157] The first information is used to indicate at least two DMRS ports and / or at least two TCI state information; the at least two DMRS ports and / or the at least two TCI state information are used to receive the first PDSCH scheduled by the first information.

[0158] In order to ensure that the first terminal and the corresponding second terminal correctly receive the same PDSCH using different DMRS ports, in one embodiment, the first information includes one of the following:

[0159] a first antenna port field and a second antenna port field;

[0160] The third antenna port domain; wherein,

[0161] The first antenna port field indicates at least one first DMRS port, the second antenna port field indicates at least one second DMRS port; and the third antenna port field indicates at least one first DMRS port and at least one second DMRS port.

[0162] In order to ensure that the first terminal and the corresponding second terminal correctly receive the same PDSCH based on different first TCI state information, in one embodiment, the first information includes one of the following:

[0163] A first transmission configuration indication field and a second transmission configuration indication field;

[0164] The third transmission configuration indication field; wherein,

[0165] The first transmission configuration indication field indicates at least one first TCI state information, the second transmission configuration indication field indicates at least one second TCI state information; the third transmission configuration indication field indicates at least one first TCI state information and at least one second TCI state information.

[0166] In order to facilitate the first terminal or the second terminal to quickly determine the DMRS port associated with the TCI status information, in one embodiment, at least one first TCI status information corresponds to at least one first DMRS port, and / or, at least one second TCI status information corresponds to at least one second DMRS port.

[0167] In order to ensure that the terminal can correctly demodulate the DMRS and correctly demodulate the PDSCH corresponding to the DMRS, and reduce the signaling overhead, in one embodiment, the TCI state indicated by at least one first TCI state information is used to correspond to the quasi-co-location information indicating at least one first DMRS port, and / or,

[0168] The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information indicating the at least one second DMRS port.

[0169] In order to ensure that the terminal can correctly demodulate the DMRS and correctly demodulate the PDSCH corresponding to the DMRS, and reduce the signaling overhead, in one embodiment, the TCI state indicated by at least one first TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one first DMRS port, and / or

[0170] The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one second DMRS port.

[0171] The following takes the first terminal as SUE and the second terminal as CUE as an example, and describes the embodiment of the present application in conjunction with the interaction flow diagram.

[0172] like Figure 5 As shown, the data transmission method includes:

[0173] Step 1: The network device sends the first information to the SUE.

[0174] The first information is used to indicate at least two DMRS ports and / or at least two TCI state information; the at least two DMRS ports and / or the at least two TCI state information are used to receive the first PDSCH scheduled by the first information.

[0175] In one embodiment, the first information includes one of the following:

[0176] a first antenna port field and a second antenna port field;

[0177] The third antenna port domain; wherein,

[0178] The first antenna port field indicates at least one first DMRS port, the second antenna port field indicates at least one second DMRS port; and the third antenna port field indicates at least one first DMRS port and at least one second DMRS port.

[0179] In one embodiment, the first information includes one of the following:

[0180] A first transmission configuration indication field and a second transmission configuration indication field;

[0181] The third transmission configuration indication field; wherein,

[0182] The first transmission configuration indication field indicates at least one first TCI state information, the second transmission configuration indication field indicates at least one second TCI state information; the third transmission configuration indication field indicates at least one first TCI state information and at least one second TCI state information.

[0183] In an embodiment, at least one first TCI state information corresponds to at least one first DMRS port, and / or at least one second TCI state information corresponds to at least one second DMRS port.

[0184] The TCI state indicated by at least one first TCI state information is used to correspond to the quasi-co-location information indicating at least one first DMRS port, and / or

[0185] The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information indicating the at least one second DMRS port.

[0186] The TCI state indicated by at least one first TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one first DMRS port, and / or

[0187] The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one second DMRS port.

[0188] Step 2: The SUE receives the first information, and based on the first information, sends the second information and / or the third information to the CUE.

[0189] The second information indicates at least one first DMRS port among the at least two DMRS ports; and the third information indicates at least one first TCI state information among the at least two TCI state information.

[0190] Step 3: The network device schedules the first PDSCH based on the first information.

[0191] Step 4: The SUE receives the first PDSCH based on at least one second DMRS port and / or at least one second TCI state information.

[0192] Step 5: The CUE receives the first PDSCH based on the second information and / or the third information.

[0193] At least one first DMRS port and / or at least one first TCI state information, receiving a first PDSCH.

[0194] Step 6: The CUE sends the received first PDSCH to the SUE.

[0195] The present application is described in further detail below in conjunction with application examples.

[0196] Application Example 1

[0197] The network device adopts DRMS ​​indication mode 1 of PDSCH of NCJR to indicate at least two DMRS ports, or indicates at least two DMRS ports and at least two TCI status information.

[0198] The network device sends the first information to the SUE, and the first information includes at least the first antenna port field and the second antenna port field, the first antenna port field indicates at least one first DMRS port, and the second antenna port field indicates at least one second DMRS port. If the first information also includes the first transmission configuration indication field and the second transmission configuration indication field, then at least one first TCI state information corresponds to at least one first DMRS port, and at least one second TCI state information corresponds to at least one second DMRS port. If the first information also includes the third transmission configuration indication field, and the third transmission configuration indication field indicates at least one first TCI state information and at least one second TCI state information, then at least one first TCI state information corresponds to at least one first DMRS port, and at least one second TCI state information corresponds to at least one second DMRS port.

[0199] For example, the number of code division multiplexing groups (CDM groups) to which the DMRS port indicated by the antenna port field belongs is 2; the CDM group of the first antenna port field indicated in the antenna port field indication table is recorded as the first CDM group, and the CDM group of the second antenna port field is recorded as the second CDM group. If the first information also includes a first transmission configuration indication field and a second transmission configuration indication field, the first TCI state information indicated by the first transmission configuration indication field is associated with the first CDM group, and the second TCI state information indicated by the second transmission configuration indication field is associated with the second CDM group. If the first information also includes a third transmission configuration indication field, the first TCI state information indicated by the third transmission configuration indication field is associated with the first CDM group, and the second TCI state information indicated by the third transmission configuration indication field is associated with the second CDM group.

[0200] Based on the first information, the SUE indicates at least one first DMRS port to the CUE, or indicates at least one first DMRS port and at least one first TCI state information. The CUE uses all DMRS antenna ports in the first CDM group to receive the first PDSCH, or the CUE receives the first PDSCH based on all DMRS antenna ports in the first CDM group and based on the first TCI state information associated with the first CDMgroup; the CUE sends the received first PDSCH to the SUE.

[0201] The SUE uses all DMRS antenna ports in the second CDM group to receive the first PDSCH, or the SUE receives the first PDSCH based on all DMRS antenna ports in the second CDM group and based on the second TCI state information associated with the second CDM group; the SUE also receives the first PDSCH sent by the CUE. In this way, the CUE and the SUE can jointly receive the same PDSCH scheduled by the first information.

[0202] Application Example 2

[0203] The network device adopts DRMS ​​indication mode 2 of PDSCH of NCJR to indicate at least two DMRS ports, or indicates at least two DMRS ports and at least two TCI status information.

[0204] The network device sends the first information to the SUE, and the first information includes at least the third antenna port field. The DMRS port indicated by the third antenna port field can be divided into two parts (first part DMRS port and second part DMRS port), the first part DMRS port includes at least one first DMRS port, and the second part DMRS port includes at least one second DMRS port. If the first information also includes the first transmission configuration indication field and the second transmission configuration indication field, then at least one first TCI state information corresponds to at least one first DMRS port, and at least one second TCI state information corresponds to at least one second DMRS port. If the first information also includes the third transmission configuration indication field, and the third transmission configuration indication field indicates at least one first TCI state information and at least one second TCI state information, then at least one first TCI state information corresponds to at least one first DMRS port, and at least one second TCI state information corresponds to at least one second DMRS port.

[0205] For example, in the antenna port domain indication table, two groups of DMRS ports indicated by the third antenna port domain are searched, the first group of DMRS ports includes at least one first DMRS port, and the second group of DMRS ports includes at least one second DMRS port. If the first information also includes a first transmission configuration indication domain and a second transmission configuration indication domain, then the first TCI state information indicated by the first transmission configuration indication domain is associated with the first group of DMRS ports, and the second TCI state information indicated by the second transmission configuration indication domain is associated with the second group of DMRS ports. If the first information also includes a third transmission configuration indication domain, then the first TCI state information indicated by the third transmission configuration indication domain is associated with the first group of DMRS ports, and the second TCI state information indicated by the third transmission configuration indication domain is associated with the second DMRS port.

[0206] Based on the first information, the SUE indicates the first group of DMRS ports to the CUE, or indicates the first group of DMRS ports and at least one first TCI state information. The CUE receives the first PDSCH using the first group of DMRS ports, or the CUE receives the first PDSCH based on the first group of DMRS ports and the first TCI state information associated with the first group of DMRS ports; the CUE sends the received first PDSCH to the SUE.

[0207] The SUE uses the second group of DMRS ports to receive the first PDSCH, or the SUE receives the first PDSCH based on the second group of DMRS ports and the second TCI state information associated with the second group of DMRS ports; the SUE receives the first PDSCH sent by the CUE. In this way, the CUE and the SUE can jointly receive the same PDSCH scheduled by the first information.

[0208] Application Example 3

[0209] The network device adopts the Beam indication mode 1 of the PDSCH of CJR / NCJR to indicate at least two TCI status information.

[0210] The network device sends the first information to the SUE, and the first information only includes the first transmission configuration indication field and the second transmission configuration indication field. The first transmission configuration indication field indicates at least one first TCI state information, and the second transmission configuration indication field indicates at least one second TCI state information.

[0211] The SUE indicates at least one first TCI state information to the CUE; the CUE receives a first PDSCH based on the at least one first TCI state information, and sends the received first PDSCH to the SUE; the SUE receives the first PDSCH based on at least one second TCI state information, and receives the first PDSCH sent by the CUE. Thus, the CUE and the SUE can jointly receive the same PDSCH scheduled by the first information.

[0212] Application Example 4

[0213] The network device adopts the Beam indication mode 2 of the PDSCH of CJR / NCJR to indicate at least two TCI status information.

[0214] The network device sends the first information to the SUE, where the first information only includes the third transmission configuration indication field, and the third transmission configuration indication field indicates at least one first TCI state information and at least one second TCI state information.

[0215] The SUE indicates at least one first TCI state information to the CUE; the CUE receives a first PDSCH based on the at least one first TCI state information, and sends the received first PDSCH to the SUE; the SUE receives the first PDSCH based on at least one second TCI state information, and receives the first PDSCH sent by the CUE. Thus, the CUE and the SUE can jointly receive the same PDSCH scheduled by the first information.

[0216] It should be noted that in an embodiment of the present application, the SUE receives PDSCH based on at least one second DMRS port and / or at least one second TCI state information; in other embodiments, the first terminal may also indicate to the corresponding second terminal at least one second DMRS port and / or at least one second TCI state information to receive PDSCH, so that the SUE receives PDSCH based on at least one first DMRS port and / or at least one first TCI state information.

[0217] In the above solution, the CUE and the SUE can jointly and correctly receive the same PDSCH scheduled by the first information, thereby improving the transmission rate and transmission reliability of the PDSCH.

[0218] In order to implement the data transmission method of the embodiment of the present application, the embodiment of the present application also provides a data transmission device, which is arranged on the first terminal, such as Figure 6 As shown, the device comprises:

[0219] The first receiving unit 601 is used to receive the first information sent by the network device; wherein,

[0220] The first information is used to indicate at least two DMRS ports and / or at least two TCI state information; the at least two DMRS ports and / or the at least two TCI state information are used to receive the first PDSCH scheduled by the first information.

[0221] In one embodiment, the device further comprises:

[0222] A second sending unit is configured to send second information and / or third information to a second terminal based on the first information; wherein:

[0223] The second information indicates at least one first DMRS port among the at least two DMRS ports; and the third information indicates at least one first TCI state information among the at least two TCI state information.

[0224] In one embodiment, the first information includes one of the following:

[0225] a first antenna port field and a second antenna port field;

[0226] The third antenna port domain; wherein,

[0227] The first antenna port field indicates at least one first DMRS port, the second antenna port field indicates at least one second DMRS port; and the third antenna port field indicates at least one first DMRS port and at least one second DMRS port.

[0228] In one embodiment, the first information includes one of the following:

[0229] A first transmission configuration indication field and a second transmission configuration indication field;

[0230] The third transmission configuration indication field; wherein,

[0231] The first transmission configuration indication field indicates at least one first TCI state information, the second transmission configuration indication field indicates at least one second TCI state information; the third transmission configuration indication field indicates at least one first TCI state information and at least one second TCI state information.

[0232] In one embodiment, the device further comprises:

[0233] The third receiving unit is configured to receive the first PDSCH sent by the second terminal; wherein:

[0234] The first PDSCH sent by the second terminal is received based on the second information and / or the third information.

[0235] In one embodiment, the device further comprises:

[0236] The fourth receiving unit is configured to receive the first PDSCH based on at least one of the following:

[0237] at least one second DMRS port of the at least two DMRS ports;

[0238] At least one second TCI status information among the at least two TCI status information.

[0239] In an embodiment, at least one first TCI state information corresponds to at least one first DMRS port, and / or at least one second TCI state information corresponds to at least one second DMRS port.

[0240] In one embodiment, the TCI state indicated by at least one first TCI state information is used to correspond to the quasi-co-location information indicating at least one first DMRS port, and / or

[0241] The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information indicating the at least one second DMRS port.

[0242] In one embodiment, the TCI state indicated by at least one first TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one first DMRS port, and / or

[0243] The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one second DMRS port.

[0244] In actual application, the first receiving unit 601 and the third receiving unit can be implemented by a communication interface in a data transmission device, and the second sending unit and the fourth receiving unit can be implemented by a processor in the data transmission device in combination with a communication interface.

[0245] In order to implement the data transmission method of the embodiment of the present application, the embodiment of the present application also provides a data transmission device, which is arranged on the second terminal, such as Figure 7 As shown, the device comprises:

[0246] The second receiving unit 701 is configured to receive the second information and / or the third information sent by the first terminal;

[0247] Among them, the second information and / or the third information are sent based on the first information sent by the network device to the first terminal; the first information is used to indicate at least two DMRS ports and / or at least two TCI status information; the at least two DMRS ports and / or the at least two TCI status information are used to receive the first PDSCH scheduled by the first information; the second information indicates at least one first DMRS port among the at least two DMRS ports; the third information indicates at least one first TCI status information among the at least two TCI status information.

[0248] In one embodiment, at least one first TCI state information corresponds to at least one first DMRS port.

[0249] In one embodiment, the TCI state indicated by the at least one first TCI state information is used to correspond to the quasi co-location information indicating the at least one first DMRS port.

[0250] In one embodiment, the TCI state indicated by the at least one first TCI state information is used to correspond to the quasi co-location information of the PDSCH antenna port corresponding to the at least one first DMRS port.

[0251] In one embodiment, the device further comprises:

[0252] a fifth receiving unit, configured to receive a first PDSCH based on the second information and / or the third information;

[0253] The third sending unit is used to send the first PDSCH to the first terminal.

[0254] In actual application, the second receiving unit 701 and the third sending unit can be implemented by a communication interface in a data transmission device, and the fifth receiving unit can be implemented by a processor in the data transmission device in combination with the communication interface.

[0255] In order to implement the data transmission method of the embodiment of the present application, the embodiment of the present application also provides a data transmission device, which is arranged on a network device, such as Figure 8 As shown, the device comprises:

[0256] The first sending unit 801 is configured to send first information to a first terminal, wherein:

[0257] The first information is used to indicate at least two DMRS ports and / or at least two TCI state information; the at least two DMRS ports and / or the at least two TCI state information are used to receive the first PDSCH scheduled by the first information.

[0258] In one embodiment, the first information includes one of the following:

[0259] a first antenna port field and a second antenna port field;

[0260] The third antenna port domain; wherein,

[0261] The first antenna port field indicates at least one first DMRS port, the second antenna port field indicates at least one second DMRS port; and the third antenna port field indicates at least one first DMRS port and at least one second DMRS port.

[0262] In one embodiment, the first information includes one of the following:

[0263] A first transmission configuration indication field and a second transmission configuration indication field;

[0264] The third transmission configuration indication field; wherein,

[0265] The first transmission configuration indication field indicates at least one first TCI state information, the second transmission configuration indication field indicates at least one second TCI state information; the third transmission configuration indication field indicates at least one first TCI state information and at least one second TCI state information.

[0266] In an embodiment, at least one first TCI state information corresponds to at least one first DMRS port, and / or at least one second TCI state information corresponds to at least one second DMRS port.

[0267] In one embodiment, the TCI state indicated by at least one first TCI state information is used to correspond to quasi-co-location information indicating at least one first DMRS port, and / or,

[0268] The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information indicating the at least one second DMRS port.

[0269] In one embodiment, the TCI state indicated by at least one first TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one first DMRS port, and / or

[0270] The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one second DMRS port.

[0271] In actual application, the first sending unit 801 can be implemented by a communication interface in a data transmission device, can be implemented by a processor in a data transmission device, or can be implemented by a processor in a data transmission device in combination with a communication interface.

[0272] It should be noted that: the data transmission device provided in the above embodiment only uses the division of the above program modules as an example when performing data transmission. In actual applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device is divided into different program modules to complete all or part of the processing described above. In addition, the data transmission device provided in the above embodiment and the data transmission method embodiment belong to the same concept. The specific implementation process is detailed in the method embodiment and will not be repeated here.

[0273] Based on the hardware implementation of the above program module, and in order to implement the method on the first terminal side of the embodiment of the present application, the embodiment of the present application also provides a first terminal, such as Fig. 9 As shown, the first terminal 900 includes:

[0274] The first communication interface 901 is capable of exchanging information with other network nodes;

[0275] The first processor 902 is connected to the first communication interface 901 to implement information exchange with other network nodes, and is used to execute the method provided by one or more technical solutions of the first terminal side when running a computer program. The computer program is stored in the first memory 903.

[0276] Specifically, the first communication interface 901 is used to receive first information sent by a network device;

[0277] The first information is used to indicate at least two DMRS ports and / or at least two TCI state information; the at least two DMRS ports and / or the at least two TCI state information are used to receive the first PDSCH scheduled by the first information.

[0278] In one embodiment, the first communication interface 901 is further used to send second information and / or third information to the second terminal based on the first information; wherein,

[0279] The second information indicates at least one first DMRS port among the at least two DMRS ports; and the third information indicates at least one first TCI state information among the at least two TCI state information.

[0280] In one embodiment, the first information includes one of the following:

[0281] a first antenna port field and a second antenna port field;

[0282] The third antenna port domain; wherein,

[0283] The first antenna port field indicates at least one first DMRS port, the second antenna port field indicates at least one second DMRS port; and the third antenna port field indicates at least one first DMRS port and at least one second DMRS port.

[0284] In one embodiment, the first information includes one of the following:

[0285] A first transmission configuration indication field and a second transmission configuration indication field;

[0286] The third transmission configuration indication field; wherein,

[0287] The first transmission configuration indication field indicates at least one first TCI state information, the second transmission configuration indication field indicates at least one second TCI state information; the third transmission configuration indication field indicates at least one first TCI state information and at least one second TCI state information.

[0288] In one embodiment, the first communication interface 901 is further used to receive a first PDSCH sent by the second terminal; wherein the first PDSCH sent by the second terminal is received based on the second information and / or the third information.

[0289] In one embodiment, the first communication interface 901 is further configured to receive the first PDSCH based on at least one of the following:

[0290] at least one second DMRS port of the at least two DMRS ports;

[0291] At least one second TCI status information among the at least two TCI status information.

[0292] In an embodiment, at least one first TCI state information corresponds to at least one first DMRS port, and / or at least one second TCI state information corresponds to at least one second DMRS port.

[0293] In one embodiment, the TCI state indicated by at least one first TCI state information is used to correspond to the quasi-co-location information indicating at least one first DMRS port, and / or

[0294] The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information indicating the at least one second DMRS port.

[0295] In one embodiment, the TCI state indicated by at least one first TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one first DMRS port, and / or

[0296] The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one second DMRS port.

[0297] It should be noted that the specific processing process of the first processor 902 and the first communication interface 901 can be understood by referring to the above method.

[0298] Of course, in actual application, the various components in the first terminal 900 are coupled together through the bus system 904. It can be understood that the bus system 904 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 904 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, Fig. 9 Various buses are labeled as bus system 904.

[0299] The first memory 903 in the embodiment of the present application is used to store various types of data to support the operation of the first terminal 900. Examples of such data include: any computer program used to operate on the first terminal 900.

[0300] The method disclosed in the above embodiment of the present application can be applied to the first processor 902, or implemented by the first processor 902. The first processor 902 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware or software instructions in the first processor 902. The above-mentioned first processor 902 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The first processor 902 can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor may be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, which is located in the first memory 903, and the first processor 902 reads the information in the first memory 903, and completes the steps of the above method in combination with its hardware.

[0301] In an exemplary embodiment, the first terminal 900 can be implemented by one or more application-specific integrated circuits (ASIC), DSP, programmable logic device (PLD), complex programmable logic device (CPLD), field-programmable gate array (FPGA), general-purpose processor, controller, microcontroller (MCU), microprocessor, or other electronic components to execute the aforementioned method.

[0302] Based on the hardware implementation of the above program module, and in order to implement the method on the second terminal side of the embodiment of the present application, the embodiment of the present application also provides a second terminal, such as Fig.10 As shown, the second terminal 1000 includes:

[0303] The second communication interface 1001 is capable of exchanging information with other network nodes;

[0304] The second processor 1002 is connected to the second communication interface 1001 to implement information exchange with other network nodes, and is used to execute the method provided by one or more technical solutions of the second terminal side when running a computer program. The computer program is stored in the second memory 1003.

[0305] Specifically, the second communication interface 1001 is used to receive the second information and / or the third information sent by the first terminal; wherein,

[0306] The second information and / or the third information are sent based on the first information sent by the network device to the first terminal; the first information is used to indicate at least two DMRS ports and / or at least two TCI status information; the at least two DMRS ports and / or the at least two TCI status information are used to receive the first PDSCH scheduled by the first information; the second information indicates at least one first DMRS port among the at least two DMRS ports; the third information indicates at least one first TCI status information among the at least two TCI status information.

[0307] In one embodiment, at least one first TCI state information corresponds to at least one first DMRS port.

[0308] In one embodiment, the TCI state indicated by the at least one first TCI state information is used to correspond to the quasi co-location information indicating the at least one first DMRS port.

[0309] In one embodiment, the TCI state indicated by the at least one first TCI state information is used to correspond to the quasi co-location information of the PDSCH antenna port corresponding to the at least one first DMRS port.

[0310] In one embodiment, the second communication interface 1001 is further used to receive a first PDSCH based on the second information and / or the third information; and send the first PDSCH to the first terminal.

[0311] It should be noted that the specific processing process of the second processor 1002 and the second communication interface 1001 can be understood by referring to the above method.

[0312] Of course, in actual application, the various components in the second terminal 1000 are coupled together through the bus system 1004. It can be understood that the bus system 1004 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 1004 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, Fig.10 Various buses are labeled as bus system 1004 .

[0313] The second memory 1003 in the embodiment of the present application is used to store various types of data to support the operation of the second terminal 1000. Examples of such data include: any computer program used to operate on the second terminal 1000.

[0314] The method disclosed in the above embodiment of the present application can be applied to the second processor 1002, or implemented by the second processor 1002. The second processor 1002 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the second processor 1002. The above-mentioned second processor 1002 may be a general-purpose processor, DSP, or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The second processor 1002 can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor may be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, which is located in the second memory 1003, and the second processor 1002 reads the information in the second memory 1003 and completes the steps of the above method in combination with its hardware.

[0315] In an exemplary embodiment, the second terminal 1000 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general purpose processors, controllers, MCUs, Microprocessors, or other electronic components to perform the aforementioned methods.

[0316] Based on the hardware implementation of the above program modules, and in order to implement the method of the network device side of the embodiment of the present application, the embodiment of the present application also provides a network device, such as Fig.11 As shown, the network device 1100 includes:

[0317] The third communication interface 1101 is capable of exchanging information with other network nodes;

[0318] The third processor 1102 is connected to the third communication interface 1101 to implement information exchange with other network nodes, and is used to execute the method provided by one or more technical solutions of the network device side when running the computer program. The computer program is stored in the third memory 1103.

[0319] Specifically, the third communication interface 1101 is used to send the first information to the first terminal, wherein:

[0320] The first information is used to indicate at least two DMRS ports and / or at least two TCI state information; the at least two DMRS ports and / or the at least two TCI state information are used to receive the first PDSCH scheduled by the first information.

[0321] In one embodiment, the first information includes one of the following:

[0322] a first antenna port field and a second antenna port field;

[0323] The third antenna port domain; wherein,

[0324] The first antenna port field indicates at least one first DMRS port, the second antenna port field indicates at least one second DMRS port; and the third antenna port field indicates at least one first DMRS port and at least one second DMRS port.

[0325] In one embodiment, the first information includes one of the following:

[0326] A first transmission configuration indication field and a second transmission configuration indication field;

[0327] The third transmission configuration indication field; wherein,

[0328] The first transmission configuration indication field indicates at least one first TCI state information, the second transmission configuration indication field indicates at least one second TCI state information; the third transmission configuration indication field indicates at least one first TCI state information and at least one second TCI state information.

[0329] In an embodiment, at least one first TCI state information corresponds to at least one first DMRS port, and / or at least one second TCI state information corresponds to at least one second DMRS port.

[0330] In one embodiment, the TCI state indicated by at least one first TCI state information is used to correspond to quasi-co-location information indicating at least one first DMRS port, and / or,

[0331] The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information indicating the at least one second DMRS port.

[0332] In one embodiment, the TCI state indicated by at least one first TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one first DMRS port, and / or

[0333] The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one second DMRS port.

[0334] It should be noted that the specific processing process of the third processor 1102 and the third communication interface 1101 can be understood by referring to the above method.

[0335] Of course, in actual application, the various components in the network device 1100 are coupled together through the bus system 1104. It can be understood that the bus system 1104 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 1104 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, Fig.11 Various buses are labeled as bus system 1104 .

[0336] The third memory 1103 in the embodiment of the present application is used to store various types of data to support the operation of the network device 1100. Examples of such data include: any computer program used to operate on the network device 1100.

[0337] The method disclosed in the above embodiment of the present application can be applied to the third processor 1102, or implemented by the third processor 1102. The third processor 1102 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by an integrated logic circuit of the hardware in the third processor 1102 or an instruction in the form of software. The above-mentioned third processor 1102 may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The third processor 1102 can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor may be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, which is located in the third memory 1103, and the third processor 1102 reads the information in the third memory 1103 and completes the steps of the above method in combination with its hardware.

[0338] In an exemplary embodiment, the network device 1100 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general purpose processors, controllers, MCUs, Microprocessors, or other electronic components to perform the aforementioned methods.

[0339] It can be understood that the memory (first memory 903, second memory 1003, third memory 1103) of the embodiment of the present application can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic random access memory (FRAM), a ferromagnetic random access memory, a flash memory, a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM, SyncLink Dynamic Random Access Memory), and direct RAM bus random access memory (DRRAM, Direct Rambus Random Access Memory).The memories described in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0340] In an exemplary embodiment, the embodiment of the present application further provides a storage medium, namely a computer storage medium, specifically a computer-readable storage medium, for example, including a first memory 903 storing a computer program, and the computer program can be executed by the first processor 902 of the first terminal 900 to complete the steps of the first terminal side method. For another example, a second memory 1003 storing a computer program is included, and the computer program can be executed by the second processor 1002 of the second terminal 1000 to complete the steps of the electronic device side method. For another example, a third memory 1103 storing a computer program is included, and the computer program can be executed by the third processor 1102 of the network device 1100 to complete the steps of the network device side method. The computer-readable storage medium can be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disk, or CD-ROM.

[0341] It should be noted that: "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0342] The term "and / or" herein is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the term "at least one" herein represents any combination of at least two of any one or more of a plurality of. For example, including at least one of A, B, and C can represent including any one or more elements selected from the set consisting of A, B, and C.

[0343] In addition, the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0344] The above description is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application.

Claims

1. A data transmission method, characterized in that: Applied to a first terminal, the method includes: Receive the first information sent by the network device; wherein, The first information is used to indicate at least two demodulation reference signal DMRS ports and / or at least two transmission configuration indication TCI state information; the at least two DMRS ports and / or the at least two TCI state information are used to receive the first physical downlink shared channel PDSCH scheduled by the first information.

2. The method according to claim 1, characterized in that The method further comprises: Based on the first information, second information and / or third information is sent to the second terminal; wherein, The second information indicates at least one first DMRS port among the at least two DMRS ports; and the third information indicates at least one first TCI state information among the at least two TCI state information.

3. The method according to claim 1, characterized in that The first information includes one of the following: a first antenna port field and a second antenna port field; The third antenna port domain; wherein, The first antenna port field indicates at least one first DMRS port, the second antenna port field indicates at least one second DMRS port; and the third antenna port field indicates at least one first DMRS port and at least one second DMRS port.

4. The method according to claim 1, characterized in that: The first information includes one of the following: A first transmission configuration indication field and a second transmission configuration indication field; The third transmission configuration indication field; wherein, The first transmission configuration indication field indicates at least one first TCI state information, the second transmission configuration indication field indicates at least one second TCI state information; the third transmission configuration indication field indicates at least one first TCI state information and at least one second TCI state information.

5. The method according to claim 2, characterized in that: The method further comprises: receiving a first PDSCH sent by the second terminal; wherein, The first PDSCH sent by the second terminal is received based on the second information and / or the third information.

6. The method according to any one of claims 1 to 5, characterized in that: The method further comprises: Receiving a first PDSCH based on at least one of the following: at least one second DMRS port of the at least two DMRS ports; At least one second TCI status information among the at least two TCI status information.

7. The method according to any one of claims 1 to 5, characterized in that: At least one first TCI state information corresponds to at least one first DMRS port, and / or at least one second TCI state information corresponds to at least one second DMRS port.

8. The method according to claim 7, characterized in that The TCI state indicated by the at least one first TCI state information is used to correspond to the quasi-co-location information indicating at least one first DMRS port, and / or The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information indicating the at least one second DMRS port.

9. The method according to claim 7, characterized in that: The TCI state indicated by the at least one first TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one first DMRS port, and / or The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one second DMRS port.

10. A data transmission method, characterized in that: Applied to the second terminal, the method includes: receiving the second information and / or the third information sent by the first terminal; wherein, The second information and / or the third information are sent based on the first information sent by the network device to the first terminal; the first information is used to indicate at least two DMRS ports and / or at least two TCI status information; the at least two DMRS ports and / or the at least two TCI status information are used to receive the first PDSCH scheduled by the first information; the second information indicates at least one first DMRS port among the at least two DMRS ports; the third information indicates at least one first TCI status information among the at least two TCI status information.

11. The method according to claim 10, characterized in that At least one first TCI state information corresponds to at least one first DMRS port.

12. The method according to claim 11, characterized in that The TCI state indicated by the at least one first TCI state information is used to correspond to the quasi co-location information indicating the at least one first DMRS port.

13. The method according to claim 11, characterized in that The TCI state indicated by the at least one first TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one first DMRS port.

14. The method according to any one of claims 10 to 13, characterized in that The method further comprises: Based on the second information and / or the third information, receiving a first PDSCH; The first PDSCH is sent to the first terminal.

15. A data transmission method, characterized in that: Applied to a network device, the method comprises: Sending first information to the first terminal, wherein: The first information is used to indicate at least two DMRS ports and / or at least two TCI state information; the at least two DMRS ports and / or the at least two TCI state information are used to receive the first PDSCH scheduled by the first information.

16. The method according to claim 15, characterized in that The first information includes one of the following: a first antenna port field and a second antenna port field; The third antenna port domain; wherein, The first antenna port field indicates at least one first DMRS port, the second antenna port field indicates at least one second DMRS port; and the third antenna port field indicates at least one first DMRS port and at least one second DMRS port.

17. The method according to claim 15, characterized in that The first information includes one of the following: A first transmission configuration indication field and a second transmission configuration indication field; The third transmission configuration indication field; wherein, The first transmission configuration indication field indicates at least one first TCI state information, the second transmission configuration indication field indicates at least one second TCI state information; the third transmission configuration indication field indicates at least one first TCI state information and at least one second TCI state information.

18. The method according to any one of claims 15 to 17, characterized in that At least one first TCI state information corresponds to at least one first DMRS port, and / or at least one second TCI state information corresponds to at least one second DMRS port.

19. The method according to claim 18, characterized in that The TCI state indicated by the at least one first TCI state information is used to correspond to the quasi-co-location information indicating the at least one first DMRS port, and / or, The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information indicating the at least one second DMRS port.

20. The method according to claim 18, characterized in that The TCI state indicated by the at least one first TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one first DMRS port, and / or The TCI state indicated by the at least one second TCI state information is used to correspond to the quasi-co-location information of the PDSCH antenna port corresponding to the at least one second DMRS port.

21. A data transmission device, characterized in that: include: The first receiving unit is used to receive the first information sent by the network device; wherein, The first information is used to indicate at least two DMRS ports and / or at least two TCI state information; the at least two DMRS ports and / or the at least two TCI state information are used to receive the first PDSCH scheduled by the first information.

22. A data transmission device, characterized in that: include: The second receiving unit is used to receive the second information and / or the third information sent by the first terminal; wherein, The second information and / or the third information are sent based on the first information sent by the network device to the first terminal; the first information is used to indicate at least two DMRS ports and / or at least two TCI status information; the at least two DMRS ports and / or the at least two TCI status information are used to receive the first PDSCH scheduled by the first information; the second information indicates at least one first DMRS port among the at least two DMRS ports; the third information indicates at least one first TCI status information among the at least two TCI status information.

23. A data transmission device, characterized in that: include: The first sending unit is used to send first information to the first terminal, wherein: The first information is used to indicate at least two DMRS ports and / or at least two TCI status information; The at least two DMRS ports and / or the at least two TCI state information are used to receive the first PDSCH scheduled by the first information.

24. A first terminal, characterized in that: comprising a first processor and a first communication interface, wherein: The first communication interface is used to receive the first information sent by the network device; wherein, The first information is used to indicate at least two DMRS ports and / or at least two TCI state information; the at least two DMRS ports and / or the at least two TCI state information are used to receive the first PDSCH scheduled by the first information.

25. A second terminal, characterized in that: comprising a second processor and a second communication interface, wherein: The second communication interface is used to receive the second information and / or the third information sent by the first terminal; Among them, the second information and / or the third information are sent based on the first information sent by the network device to the first terminal; the first information is used to indicate at least two DMRS ports and / or at least two TCI status information; the at least two DMRS ports and / or the at least two TCI status information are used to receive the first PDSCH scheduled by the first information; the second information indicates at least one first DMRS port among the at least two DMRS ports; the third information indicates at least one first TCI status information among the at least two TCI status information.

26. A network device, characterized in that: comprising a third processor and a third communication interface, wherein: The third communication interface is used to send the first information to the first terminal, wherein: The first information is used to indicate at least two DMRS ports and / or at least two TCI state information; the at least two DMRS ports and / or the at least two TCI state information are used to receive the first PDSCH scheduled by the first information.

27. A communication device, characterized in that: The communication device comprises a first terminal, a second terminal or a network device, and the communication device comprises a processor and a memory for storing a computer program that can be run on the processor. Wherein, when the processor is used to run the computer program, it executes the steps of the method described in any one of claims 1 to 9, or executes the steps of the method described in any one of claims 10 to 14, or executes the steps of the method described in any one of claims 15 to 20.

28. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the computer program implements the steps of the method described in any one of claims 1 to 9, or implements the steps of the method described in any one of claims 10 to 14, or implements the steps of the method described in any one of claims 15 to 20.

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