Communication method, and apparatus, device, chip and storage medium

Abstract

Provided in the present application are a communication method, and an apparatus, a device, a chip and a storage medium. The method comprises: receiving a first demodulation reference signal (DMRS) configuration and a second DMRS configuration, wherein the first DMRS configuration indicates a first DMRS resource that is not used for DMRS transmission and / or reception and is not used for data transmission and / or reception, and the second DMRS configuration indicates a second DMRS resource that is used for data transmission and / or reception and is not used for DMRS transmission and / or reception; and on the basis of the first DMRS configuration and the second DMRS configuration, performing DMRS transmission and / or reception, and / or performing data transmission and / or reception.

Description

Communication method, device, equipment, chip and storage medium Technical Field

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

[0002] In the related art, when the time-frequency resources used for data transmission and / or reception can be simultaneously superimposed with the transmission and / or reception of the demodulation reference signal (DMRS), if the network device simultaneously schedules multiple users for multi-user multiplexing, there will be greater interference between the DMRS of the multiplexed users. For some users who do not support advanced receivers, it is difficult to effectively eliminate interference at the receiving end, resulting in poor detection performance. Even for users who support advanced receivers, if the interference on the pilot is too large, the probability of detection failure will increase. Therefore, when the transmission and / or reception of DMRS and the transmission and / or reception of data are superimposed and multiplexed with other users, how to ensure the detection performance of terminal devices with different receiving capabilities is a problem that needs to be solved.

[0003] Summary of the Invention

[0004] The present application provides a communication method, apparatus, device, chip and storage medium.

[0005] In a first aspect, the communication method provided by the present application includes:

[0006] receiving a first demodulation reference signal (DMRS) configuration and a second DMRS configuration, wherein the first DMRS configuration indicates a first DMRS resource that is not used for DMRS transmission and / or reception and is not used for data transmission and / or reception, and the second DMRS configuration indicates a second DMRS resource that is used for data transmission and / or reception and is not used for DMRS transmission and / or reception;

[0007] Based on the first DMRS configuration and the second DMRS configuration, DMRS transmission and / or reception and / or data transmission and / or reception are performed.

[0008] In a second aspect, the communication method provided by this application includes:

[0009] Sending a first demodulation reference signal (DMRS) configuration and a second DMRS configuration to a first terminal device; wherein the first DMRS configuration indicates a first DMRS resource that is not used for DMRS transmission and / or reception and is not used for data transmission and / or reception, and the second DMRS configuration indicates a second DMRS resource that is used for data transmission and / or reception and is not used for DMRS transmission and / or reception;

[0010] Based on the first DMRS configuration and the second DMRS configuration, DMRS transmission and / or reception and / or data transmission and / or reception are performed with the first terminal device.

[0011] In a third aspect, the present application provides a terminal device, which includes:

[0012] A first communication unit is configured to receive a first demodulation reference signal (DMRS) configuration and a second DMRS configuration; wherein the first DMRS configuration indicates a first DMRS resource that is not used for DMRS transmission and / or reception and is not used for data transmission and / or reception, and the second DMRS configuration indicates a second DMRS resource that is used for data transmission and / or reception and is not used for DMRS transmission and / or reception;

[0013] The first communication unit is further configured to perform DMRS transmission and / or reception, and / or data transmission and / or reception, based on the first DMRS configuration and the second DMRS configuration.

[0014] In a fourth aspect, the present application provides a network device, the device comprising:

[0015] A second communication unit is configured to send a first demodulation reference signal DMRS configuration and a second DMRS configuration to the first terminal device; wherein the first DMRS configuration indicates a first DMRS resource that is not used for DMRS transmission and / or reception and is not used for data transmission and / or reception, and the second DMRS configuration indicates a second DMRS resource that is used for data transmission and / or reception and is not used for DMRS transmission and / or reception;

[0016] The second communication unit is further configured to send and / or receive DMRS and / or send and / or receive data with the first terminal device based on the first DMRS configuration and the second DMRS configuration.

[0017] In a fifth aspect, the present application provides a terminal device comprising a memory, a processor, and a transceiver. The memory is used to store computer programs; the processor is connected to the memory and is used to retrieve and execute the computer programs from the memory to implement the method of the first aspect described above; and the transceiver is used to receive and send information during the process of transmitting and receiving information with other external devices.

[0018] In a sixth aspect, the present application provides a network device comprising a memory, a processor, and a transceiver. The memory is used to store computer programs; the processor is connected to the memory and is used to retrieve and execute the computer programs from the memory to implement the method of the second aspect described above; and the transceiver is used to receive and send information during the process of sending and receiving information with other external devices.

[0019] In a seventh aspect, the present application provides a chip comprising a memory, a processor, and a transceiver. The memory is used to store computer programs; the processor is connected to the memory and is used to call and execute the computer programs from the memory, causing the device equipped with the chip to perform the method of the first or second aspect described above; and the transceiver is used to receive and send information during the process of sending and receiving information with the device or chip.

[0020] In an eighth aspect, the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by at least one processor, it implements the method of the first aspect or the second aspect mentioned above.

[0021] In the ninth aspect, the present application provides a computer program product, which includes a computer storage medium, the computer storage medium storing a computer program, and the computer program including instructions that can be executed by at least one processor, which implements the method of the first or second aspect above when the instructions are executed by at least one processor.

[0022] In a tenth aspect, the present application provides a computer program, which enables a computer to execute the method of the first or second aspect above.

[0023] The present application provides a communication method, in which a first terminal device can receive a first DMRS configuration and a second DMRS configuration; wherein the first DMRS configuration indicates a first DMRS resource that is not used for DMRS transmission and / or reception and is not used for data transmission and / or reception, and the second DMRS configuration indicates a second DMRS resource that is used for data transmission and / or reception and is not used for DMRS transmission and / or reception; based on the first DMRS configuration and the second DMRS configuration, DMRS transmission and / or reception is performed, and / or data transmission and / or reception is performed. In this way, after the first terminal device receives the first DMRS configuration and the second DMRS configuration, based on the first DMRS configuration and the second DMRS configuration, mutual interference between the DMRSs for data superposition transmission and / or reception, and / or between the DMRS for data superposition transmission and / or reception and the DMRS for separate transmission and / or reception can be avoided, thereby ensuring the detection performance of the first terminal device and improving the uplink and downlink transmission performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] FIG1 is a schematic diagram of a communication architecture;

[0026] FIG2A is a schematic diagram of a DMRS scenario 1;

[0027] FIG2B is a schematic diagram of a DMRS scenario II;

[0028] FIG3A is a schematic diagram of another DMRS type scenario 1;

[0029] FIG3B is a second schematic diagram of another DMRS type scenario;

[0030] FIG4 is a schematic diagram of a scenario in which DMRS and data occupy time-frequency resources;

[0031] FIG5 is a flow chart of a communication method provided in an embodiment of the present application;

[0032] FIG6A is a schematic diagram of a scenario in which DMRS and data occupy time-frequency resources according to an embodiment of the present application;

[0033] FIG6B is a second schematic diagram of a scenario in which DMRS and data occupy time-frequency resources according to an embodiment of the present application;

[0034] FIG7A is a third schematic diagram of a scenario in which DMRS and data occupy time-frequency resources according to an embodiment of the present application;

[0035] FIG7B is a fourth schematic diagram of a scenario in which DMRS and data occupy time-frequency resources according to an embodiment of the present application;

[0036] FIG8A is a fifth schematic diagram of a scenario in which DMRS and data occupy time-frequency resources according to an embodiment of the present application;

[0037] FIG8B is a sixth schematic diagram of a scenario in which DMRS and data occupy time-frequency resources according to an embodiment of the present application;

[0038] FIG9 is a schematic diagram of the structure of a terminal device 900 provided in an embodiment of the present application;

[0039] FIG10 is a schematic diagram of the structure of a network device 1000 provided in an embodiment of the present application;

[0040] FIG11 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0041] FIG12 is a schematic structural diagram of a chip provided in an embodiment of the present application;

[0042] FIG13 is a schematic block diagram of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0044] FIG1 is a schematic diagram of an application scenario of an embodiment of the present application.

[0045] As shown in Figure 1, a communication system 100 may include a terminal device 110 and a network device 120. The network device 120 may communicate with the terminal device 110 via an air interface. The terminal device 110 and the network device 120 may support multi-service transmission and / or reception.

[0046] It should be understood that the embodiments of the present application are only illustrative of the communication system 100, but the embodiments of the present application are not limited thereto. That is, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Internet of Things (IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, 5G communication system (also known as New Radio (NR) communication system), or future communication systems.

[0047] In the communication system 100 shown in Figure 1, the network device 120 may be an access network device that communicates with the terminal device 110. The access network device may provide communication coverage for a specific geographical area and may communicate with the terminal device 110 located within the coverage area.

[0048] The network device 120 may be an evolved Node B (eNB or eNodeB) in an LTE system, or a Next Generation Radio Access Network (NG RAN) device, or a base station (gNB) in an NR system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the network device 120 may be a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved Public Land Mobile Network (PLMN), etc.

[0049] The terminal device 110 may be any terminal device, including but not limited to a terminal device connected to the network device 120 or other terminal devices by wire or wireless connection.

[0050] For example, the terminal device 110 may refer to an access terminal, user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user apparatus. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, an IoT device, a satellite handheld terminal, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolution network, etc.

[0051] The terminal device 110 can be used for device-to-device (D2D) communication.

[0052] FIG1 exemplarily shows a network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in this embodiment of the present application.

[0053] It should be noted that FIG1 is only an example of a system to which this application is applicable. Of course, the method shown in the embodiment of this application can also be applied to other systems. In addition, the terms "system" and "network" are often used interchangeably in this article.

[0054] It should be understood that the term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0055] It should also be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0056] It should also be understood that the "correspondence" mentioned in the embodiments of the present application may indicate a direct or indirect correspondence between the two, or an association between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0057] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following relevant technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application.

[0058] In the NR communication system, DMRS can be divided into front-loaded DMRS (also known as front-loaded DMRS) and post-loaded DMRS (also known as additional DMRS).

[0059] It should be noted that the pre-DMRS is usually located in the first few orthogonal frequency division multiplexing (OFDM) symbols of the time slot, and the post-DMRS pattern is a repetition of the pre-DMRS (for example, using the same frequency domain resources, or for example, using the same number of OFDM symbols). The pre-DMRS can include one or more OFDM symbols and is configured by the network device.

[0060] It should also be noted that NR can support two different DMRS types, and different DMRS types occupy resources in different ways. The following uses a small grid representing one resource element (RE), 12 subcarriers in the frequency domain resources, and 7 OFDM symbols in the time domain resources as an example, and combines Figures 2A to 3B to illustrate the two different DMRS types.

[0061] For one DMRS type, as shown in Figures 2A and 2B , two code division multiplexing (CDM) groups can be supported on one OFDM symbol in each physical resource block (PRB), each CDM group containing six subcarriers; the first CDM group is carried by the first type of REs, and the second CDM group is carried by the second type of REs. Each CDM group can support two ports, and the two ports are orthogonalized by an orthogonal cover code (OCC). That is, the OCC code used by one port is [+1+1+1+1+1+1], and the OCC code used by the other port is [+1-1+1-1+1-1]. The orthogonality between the two ports is ensured by the OCC code.

[0062] Exemplarily, as shown in FIG2A , a maximum of four orthogonal ports can be supported on one OFDM symbol.

[0063] Exemplarily, as shown in FIG2B , a maximum of 8 orthogonal ports may be supported on two OFDM symbols, and a time domain orthogonal cover code (TD-OCC) may be used between the two OFDM symbols.

[0064] For another DMRS type, as shown in Figures 3A and 3B, three CDM groups can be supported on one OFDM symbol in each PRB. Each CDM group contains four adjacent subcarriers. The first CDM group is carried by the first type of RE, the second CDM group is carried by the second type of RE, and the third CDM group is carried by the third type of RE. Each CDM group can support two ports, and the two ports are orthogonalized by OCC. That is, the OCC code used by one port is [+1+1+1+1], and the OCC code used by the other port is [+1-1+1-1].

[0065] Exemplarily, as shown in FIG3A , a maximum of 6 orthogonal ports can be supported on one OFDM symbol.

[0066] Exemplarily, as shown in FIG3B , a maximum of 12 orthogonal ports can be supported on two OFDM symbols, and TD-OCC is used between the two OFDM symbols.

[0067] In order to further reduce the overhead of the physical resources (time-frequency resources) used for DMRS transmission and / or reception and increase the rate of DMRS transmission and / or reception, it is possible to consider superimposing DMRS and data for transmission and / or reception. Figure 4 is a schematic diagram of a scenario in which DMRS and data occupy time-frequency resources. As shown in Figure 4, the control channel can be used to send and / or receive control information about DMRS and data (such as data type, and data size) to ensure the accuracy of DMRS transmission and / or reception and data transmission and / or reception. DMRS and data can occupy the same time-frequency resources (including subcarriers 0-11 on OFDM symbols 3-13) and use a certain transmit power ratio for superimposed transmission and / or reception (i.e., DMRS and data are superimposed on the same RE), so that the data can be directly detected at the receiving end based on the AI ​​receiver without the need for a separate channel estimation process. In Figure 4, all REs used to send and / or receive data can be used to simultaneously send and / or receive DMRS, so that no dedicated time-frequency resources are required to send and / or receive DMRS, which significantly reduces the overhead of time-frequency resources.

[0068] In the embodiments of the present application, RE, PRB, traditional users and users that perform superimposed transmission and / or reception are mentioned many times. The following briefly describes RE, PRB, traditional users and users that perform superimposed transmission and / or reception.

[0069] RE: The smallest time-frequency resource unit in a wireless communication system. For example, in NR or LTE systems, one RE in the frequency domain corresponds to one subcarrier, and one RE in the time domain corresponds to one OFDM symbol.

[0070] PRB: PRB can be for K consecutive subcarriers in the frequency domain and for M consecutive OFDM symbols in the time domain, where K and M are positive integers.

[0071] Exemplarily, the value of K may be one or more of 8, 12, and 16, or other values, which is not limited in the embodiments of the present application.

[0072] Exemplarily, the value of M can be one or more of 6, 7, 13, and 14, or other values, which is not limited in the embodiments of the present application.

[0073] Traditional users: may refer to users for which DMRS and data need to be sent and / or received separately. In other words, for traditional users, DMRS and data need to occupy different time-frequency resources for transmission and / or reception.

[0074] Users that transmit and / or receive data in an overlapping manner: This refers to users that can transmit and / or receive DMRS and data in an overlapping manner. That is, for users that transmit and / or receive data in an overlapping manner, DMRS and data can occupy the same time-frequency resources (REs) for transmission and / or reception.

[0075] It should be noted that, in the embodiment of the present application, multiplexed users may include traditional users and users who perform superimposed sending and / or receiving.

[0076] In the related art, when the time-frequency resources used for data transmission and / or reception can be simultaneously superimposed with DMRS transmission and / or reception, if the network equipment simultaneously schedules multiple users to perform multi-user-multiple input and multiple output (Multi-User Multiple-Input Multiple-Output, MU-MIMO), there will be greater interference when the multiple users transmit and / or receive DMRS. For some users who do not support advanced receivers, it is difficult to effectively eliminate interference at the receiving end, resulting in poor detection performance. Even for users who support advanced receivers, if the interference on the pilot is too large, the probability of detection failure will increase. Therefore, when users who transmit and / or receive DMRS and data in superposition are multiplexed with other users, how to ensure the detection performance of terminal devices with different receiving capabilities is a problem that needs to be solved.

[0077] Based on this, an embodiment of the present application provides a communication method, in which a first terminal device can receive a first DMRS configuration and a second DMRS configuration; wherein the first DMRS configuration indicates a first DMRS resource that is not used for DMRS transmission and / or reception and is not used for data transmission and / or reception, and the second DMRS configuration indicates a second DMRS resource that is used for data transmission and / or reception and is not used for DMRS transmission and / or reception; based on the first DMRS configuration and the second DMRS configuration, DMRS transmission and / or reception is performed, and / or data transmission and / or reception is performed. In this way, after the first terminal device receives the first DMRS configuration and the second DMRS configuration, based on the first DMRS configuration and the second DMRS configuration, mutual interference between the DMRSs for data superposition transmission and / or reception, and / or between the DMRS for data superposition transmission and / or reception and the DMRS for separate transmission and / or reception can be avoided, thereby ensuring the detection performance of the first terminal device and improving the uplink and downlink transmission performance.

[0078] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be combined arbitrarily with the technical solutions of the embodiments of the present application as optional solutions, and all of them fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0079] It should be noted that the following embodiments repeatedly mention the superimposed transmission and / or reception of DMRS and data. It should be understood that the superimposed transmission and / or reception of DMRS and data means that DMRS and data can occupy the same physical resources (time-frequency resources) and are transmitted and / or received at a certain transmission power ratio. In other words, DMRS and data can be transmitted and / or received on the same time-frequency resources at a certain transmission power ratio. Physical resources refer to the time domain and frequency domain resources for wireless signal transmission and / or reception. Time domain resources are usually measured in time slots or symbols, and frequency domain resources are measured in resource blocks or subcarriers as frequency domain units. Typically, each time slot contains 14 symbols, and each resource block contains 12 subcarriers. One RE occupies one symbol in the time domain and one subcarrier in the frequency domain.

[0080] For example, taking an RE as an example, assuming that the ratio of the transmission power of DMRS on the RE to the transmission power of data on the RE is a first transmission power ratio, then DMRS and data can be sent and / or received on the RE at the first transmission power ratio.

[0081] FIG5 is a flow chart of a communication method provided in an embodiment of the present application. As shown in FIG5 , the method may include the following steps.

[0082] S510. The network device sends a first DMRS configuration and a second DMRS configuration to the first terminal device; wherein, the first DMRS configuration indicates a first DMRS resource that is not used for DMRS transmission and / or reception and is not used for data transmission and / or reception, and the second DMRS configuration indicates a second DMRS resource that is used for data transmission and / or reception and is not used for DMRS transmission and / or reception.

[0083] Correspondingly, the first terminal device can receive the first DMRS configuration and the second DMRS configuration sent by the network device.

[0084] It should be noted that DMRS resources (such as the first DMRS resources and the second DMRS resources) can refer to the time-frequency resources occupied by DMRS (such as DMRS ports). That is, from the perspective of network equipment, DMRS resources are time-frequency resources that can be used for DMRS sending and / or receiving.

[0085] It should be understood that DMRS resources are time-frequency resources that can be used for DMRS transmission and / or reception. It can be understood that, from the perspective of the network device, DMRS resources can be time-frequency resources for the first terminal device to transmit and / or receive DMRS, or can be time-frequency resources for other terminal devices other than the first terminal device to transmit and / or receive DMRS. The embodiments of the present application do not limit this. In addition, if the DMRS resources are not used for DMRS transmission and / or reception of the first terminal device, then from the perspective of the first terminal device, these DMRS resources are reserved DMRS resources, rather than time-frequency resources used for DMRS transmission and / or reception.

[0086] Exemplarily, the first DMRS resource is not used for the first terminal device to send and / or receive DMRS, but can be used for other terminal devices (such as the second terminal device) other than the first terminal device to send and / or receive DMRS.

[0087] Exemplarily, the second DMRS resource is not used for the first terminal device to send and / or receive DMRS, but can be used for other terminal devices other than the first terminal device (such as a third terminal device) to send and / or receive DMRS.

[0088] Furthermore, DMRS resources can be configured through DMRS-related configuration information such as DMRS port and DMRS type.

[0089] It should be noted that the first DMRS resource can be a DMRS resource (port) in the NR protocol, for example, a DMRS resource with a DMRS type of Type 1 in the NR protocol, or a DMRS resource with a DMRS type of Type 2.

[0090] In some embodiments, the network device can perform DMRS transmission and / or reception with the second terminal device on the first DMRS resource; wherein the time-frequency resources used for the second terminal device to transmit and / or receive data overlap with at least part of the time-frequency resources used for the first terminal device to transmit and / or receive data.

[0091] It should be noted that at least part of the time-frequency resources can be one of the two parts of time-frequency resources (i.e., the time-frequency resources used for the second terminal device to send and / or receive data, and the time-frequency resources used for the first terminal device to send and / or receive data), or it can be multiple time-frequency resources (not all time-frequency resources) in the two parts of time-frequency resources, or it can be all the time-frequency resources in the two parts of time-frequency resources. The embodiments of the present application are not limited to this.

[0092] It should also be noted that, since the first terminal device does not perform DMRS transmission and / or reception and does not perform data transmission and / or reception on the first DMRS resource, when other terminal devices (such as the second terminal device) perform DMRS transmission and / or reception on the first DMRS resource, interference with the DMRS transmission and / or reception of the first terminal device can be avoided; that is, the first terminal device can reserve the first DMRS resource for other terminal devices to perform DMRS transmission and / or reception. The other terminal device may be a terminal device capable of performing superimposed transmission and / or reception of DMRS and data, or a terminal device that performs DMRS transmission and / or reception alone.

[0093] It should be noted that other terminal devices can perform superimposed transmission and / or reception of DMRS and data, which means that for other terminal devices, DMRS and data can occupy the first DMRS resource and be sent and / or received at a certain power ratio. In other words, for other terminal devices, DMRS and data can be sent and / or received on the first DMRS resource at a certain power ratio.

[0094] Furthermore, the first terminal device may perform rate matching on data on the first DMRS resource.

[0095] For example, as shown in Figures 6A and 6B, UE1 (i.e., the first terminal device) may not transmit and / or receive DMRS and may not transmit and / or receive data on the time-frequency resources occupied by the first DMRS (i.e., the first DMRS resources). Furthermore, the network device may transmit and / or receive DMRS with UE2 (i.e., the second terminal device) on the time-frequency resources occupied by the first DMRS.

[0096] Exemplarily, as shown in FIG. 7A and FIG. 7B , the first DMRS resource may be used for DMRS transmission and / or reception by UE2 (ie, the second terminal device).

[0097] Through this method, the network device can perform DMRS transmission and / or reception with the second terminal device on the first DMRS resource, and at the same time, the first terminal device does not perform signal transmission and / or reception (including DMRS transmission and / or reception and data transmission and / or reception) on the first DMRS resource, thereby avoiding the DMRS transmission and / or reception of the first terminal device from interfering with the DMRS transmission and / or reception of the second terminal device, ensuring the detection performance of the first terminal device, and improving the uplink and downlink transmission performance.

[0098] In some embodiments, the first DMRS resource may occupy part of subcarriers on one or more OFDM symbols.

[0099] It should be noted that some subcarriers on one or more OFDM symbols can be one subcarrier on one or more OFDM symbols, or multiple subcarriers (not all subcarriers) on one or more OFDM symbols. This embodiment of the present application does not limit this.

[0100] Exemplarily, the first DMRS resource may occupy some subcarriers on one or more OFDM symbols of a physical downlink shared channel (PDSCH) / physical uplink shared channel (PUSCH).

[0101] Exemplarily, the first terminal device does not perform DMRS transmission and / or reception and does not perform data transmission and / or reception on the first DMRS resource, and the first DMRS resource may occupy odd subcarriers or even subcarriers on one or more OFDM symbols. For example, as shown in Figures 6A and 6B, the first DMRS resource may occupy an odd subcarrier on OFDM symbol 3; for another example, as shown in Figures 7A and 7B, the first DMRS resource is the time-frequency resource occupied by the DMRS of UE2 (i.e., the second terminal device), and the first DMRS resource may occupy an odd subcarrier on OFDM symbol 3.

[0102] Through this method, the first DMRS resource can occupy part of the subcarriers on one or more OFDM symbols, so that the first terminal device may not send and / or receive DMRS on this part of the subcarriers and may not send and / or receive data, thereby avoiding mutual interference between other terminal devices (such as the second terminal device) and the first terminal device when performing DMRS transmission and / or reception on this part of the subcarriers, thereby ensuring the detection performance of the first terminal device and improving the uplink and downlink transmission performance.

[0103] In some embodiments, on one or more OFDM symbols, the first terminal device performs power boosting for DMRS transmission and / or performs power boosting for data transmission.

[0104] That is to say, when the first terminal device performs DMRS transmission and / or data transmission, the transmission power can be increased on one or more OFDM symbols.

[0105] Exemplarily, as shown in FIG6A and FIG6B , if UE1 (i.e., the first terminal device) does not transmit DMRS and data on the odd subcarriers in OFDM symbol 3, UE1 may perform a power boost for DMRS transmission and / or a power boost for data transmission on the even subcarriers in OFDM symbol 3. For example, if UE1 does not transmit DMRS and does not transmit data on the odd subcarriers in OFDM symbol 3, the DMRS transmitted by UE1 on the even subcarriers in OFDM symbol 3 may obtain a 3dB power boost.

[0106] Exemplarily, as shown in Figures 7A and 7B, if UE1 (i.e., the first terminal device) does not send DMRS and does not send data on the odd subcarriers on OFDM symbol 3 (i.e., the subcarriers occupied by UE2's DMRS), UE1 can perform power boosting of DMRS transmission and / or power boosting of data transmission on the even subcarriers on the OFDM symbol 3.

[0107] It should be noted that the ratio of the transmission power increase of the first terminal device on one or more OFDM symbols is: the ratio of the total number of partial subcarriers and subcarriers used for transmission on one or more OFDM symbols to the number of subcarriers used for transmission; wherein the subcarriers used for transmission are: the subcarriers on which the first terminal device performs DMRS transmission and / or data transmission on one or more OFDM symbols. Let the number of partial subcarriers on one or more OFDM symbols be A, the number of subcarriers used for transmission be B, and the ratio of the transmission power increase be C. The calculation formula of the ratio C of the transmission power increase can be as follows: C = (A + B) / B (1)

[0108] It should be understood that some of the subcarriers on one or more OFDM symbols are subcarriers on which the first terminal device does not transmit a DMRS and does not transmit data. For example, as shown in Figures 6A and 6B, taking OFDM symbol 3 as an example, some of the subcarriers on OFDM symbol 3 may be odd-numbered subcarriers on OFDM symbol 3, and the first terminal device does not transmit a DMRS and does not transmit data on the odd-numbered subcarriers on OFDM symbol 3.

[0109] It should also be understood that the subcarriers used for transmission are: the subcarriers other than the subcarriers in one or more OFDM symbols. For example, as shown in Figures 6A and 6B, taking OFDM symbol 3 as an example, the first terminal device does not transmit DMRS and does not transmit data on the odd-numbered subcarriers in OFDM symbol 3, so the subcarriers used for transmission are the even-numbered subcarriers in OFDM symbol 3.

[0110] It should also be understood that, in one or more OFDM symbols, some subcarriers are subcarriers not used for transmitting DMRS and data, and the subcarriers used for transmission are other subcarriers except for these subcarriers. Therefore, A+B in formula (1) is the total number of subcarriers in the one or more OFDM symbols. The first terminal device can allocate the transmit power of some subcarriers to the power of other subcarriers used for transmission, thereby increasing the transmit power of other subcarriers.

[0111] For example, as shown in Figures 6A and 6B, taking OFDM symbol 3 as an example, the total number of subcarriers is 12, subcarriers 1, 3, 5, 7, 9, and 11 are not used for DMRS transmission and are not used for data transmission, and the subcarriers used for transmission are subcarriers 0, 2, 4, 6, 8, and 10. The first terminal device can allocate the transmission power of subcarriers 1, 3, 5, 7, 9, and 11 to the transmission power of subcarriers 0, 2, 4, 6, 8, and 10, so that the ratio C of the transmission power increase can be obtained as (6+6) / 6=2.

[0112] Through this method, since the first terminal device does not send DMRS and does not send data on some subcarriers on one or more OFDM symbols, the saved power can be used for DMRS transmission and / or data transmission on these OFDM symbols. Therefore, when the first terminal device sends DMRS and / or data on these OFDM symbols, it can obtain power gain, thereby improving the performance of uplink channel estimation.

[0113] In some embodiments, the receiving power of the first terminal device for DMRS reception and / or data reception remains unchanged on one or more OFDM symbols.

[0114] That is to say, on one or more OFDM symbols, for the first terminal device, the receiving power of the subcarrier used for reception is the same as that of the subcarrier not used for reception. The first terminal device cannot obtain an increase in receiving power when performing DMRS reception and / or downlink data reception.

[0115] In some embodiments, the first DMRS resource may be used for interference measurement of terminal devices other than the first terminal device.

[0116] It should be noted that since the first DMRS resource is actually used by other terminal devices to send and / or receive DMRS, the first terminal device can perform interference measurement on the first DMRS resource to obtain the interference caused by other terminal devices to itself, which can be used for interference suppression by the receiver.

[0117] It should also be noted that when the first terminal device performs interference measurement on the first DMRS resource, it can be assumed that only the DMRS transmission and / or reception of the interfering user is on the first DMRS resource, and no data transmission and / or reception of the interfering user is performed.

[0118] Exemplarily, as shown in Figures 7A and 7B, the first DMRS resource is the time-frequency resource occupied by the DMRS of UE2 (i.e., the second terminal device). The first DMRS resource is actually used for DMRS transmission and / or reception of UE2, so UE1 (i.e., the first terminal device) can measure interference from UE2 on the first DMRS resource.

[0119] Through this method, the first DMRS resource can be used for interference measurement of terminal devices other than the first terminal device. Therefore, the first terminal device can perform interference measurement on the first DMRS resource to obtain interference from other terminal devices to itself.

[0120] In some embodiments, the network device can perform DMRS transmission and / or reception with a third terminal device on a second DMRS resource; wherein the time-frequency resources used for data transmission and / or reception by the third terminal device overlap with at least part of the time-frequency resources used for data transmission and / or reception by the first terminal device.

[0121] It should be noted that at least part of the time-frequency resources can be one of the two parts of time-frequency resources (i.e., the time-frequency resources used for the third terminal device to send and / or receive data, and the time-frequency resources used for the first terminal device to send and / or receive data), or it can be multiple time-frequency resources (not all time-frequency resources) in the two parts of time-frequency resources, or it can be all time-frequency resources in the two parts of time-frequency resources. The embodiments of the present application are not limited to this.

[0122] It should also be noted that, since the first terminal device transmits and / or receives data on the second DMRS resource and does not transmit and / or receive DMRS, when other terminal devices (such as a third terminal device) transmit and / or receive DMRS on the second DMRS resource, interference with the DMRS transmission and / or reception of the first terminal device can be avoided. The other terminal device may be a terminal device capable of superimposed transmission and / or reception of DMRS and data.

[0123] It should also be noted that other terminal devices can perform superimposed transmission and / or reception of DMRS and data, which means that for other terminal devices, DMRS and data can occupy the second DMRS resource and be sent and / or received at a certain transmit power ratio. In other words, for other terminal devices, DMRS and data can be sent and / or received on the second DMRS resource at a certain transmit power ratio.

[0124] Exemplarily, as shown in Figures 6A and 6B, UE1 (i.e., the first terminal device) can transmit and / or receive data on the time-frequency resources occupied by the second DMRS (i.e., the second DMRS resources) without transmitting and / or receiving DMRS. Furthermore, the network device can transmit and / or receive DMRS with UE3 (i.e., the third terminal device) on the time-frequency resources occupied by the second DMRS.

[0125] Exemplarily, as shown in FIG. 7A and FIG. 7B , the second DMRS resource may be used for DMRS transmission and / or reception by UE3 (ie, the third terminal device).

[0126] Through this method, the network device can perform DMRS transmission and / or reception with the third terminal device on the second DMRS resource, while the first terminal device does not perform DMRS transmission and / or reception on the second DMRS resource, thereby avoiding the DMRS transmission and / or reception of the first terminal device from interfering with the DMRS transmission and / or reception of the third terminal device, ensuring the detection performance of the first terminal device, and improving the uplink and downlink transmission and / or reception performance.

[0127] In some embodiments, the second DMRS resources occupy part of all subcarriers on OFDM symbols used for data transmission and / or reception; or, the second DMRS resources occupy part of subcarriers on all OFDM symbols used for data transmission and / or reception.

[0128] It should be noted that the partial subcarriers on all OFDM symbols used for data transmission and / or reception may be one subcarrier on all OFDM symbols used for data transmission and / or reception, or may be multiple subcarriers (not all subcarriers) on all OFDM symbols used for data transmission and / or reception. This embodiment of the present application is not limited to this.

[0129] Exemplarily, as shown in FIG6A , the first terminal device performs data transmission and / or reception on the second DMRS resource and does not perform DMRS transmission and / or reception, and the second DMRS resource occupies half of the subcarriers 0-5 on all OFDM symbols 4-13 used for data transmission and / or reception.

[0130] Exemplarily, as shown in FIG6B , the first terminal device performs data transmission and / or reception on the second DMRS resource and does not perform DMRS transmission and / or reception, and the second DMRS resource occupies all subcarriers on half of the OFDM symbols 9-13 in the OFDM symbols 4-13 used for data transmission and / or reception.

[0131] Exemplarily, as shown in Figure 7A, the first terminal device sends and / or receives data on the second DMRS resource and does not send and / or receive DMRS. The second DMRS resource is the time-frequency resource occupied by the DMRS of UE3 (i.e., the third terminal device). The second DMRS resource can occupy half of the subcarriers 0-5 on all OFDM symbols 4-13 used for data sending and / or receiving.

[0132] Exemplarily, as shown in Figure 7B, the first terminal device sends and / or receives data on the second DMRS resource and does not send and / or receive DMRS. The second DMRS resource is the time-frequency resource occupied by the DMRS of UE3 (i.e., the third terminal device). The second DMRS resource occupies all subcarriers on half of the OFDM symbols 9-13 in the OFDM symbols 4-13 used for data sending and / or receiving.

[0133] Through this method, the first terminal device may not perform DMRS transmission and / or reception on the second DMRS resource, thereby avoiding mutual interference between the DMRS transmission and / or reception of other terminal devices (such as a third terminal device) on the second DMRS resource and the DMRS transmission and / or reception of the first terminal device, thereby ensuring the detection performance of the first terminal device and improving the uplink and downlink transmission and / or reception performance.

[0134] In some embodiments, the first terminal device performs power boosting of DMRS transmission and / or power boosting of data transmission on all OFDM symbols used for data transmission.

[0135] That is, when the second DMRS resource occupies part of the subcarriers on all OFDM symbols used for data transmission, and the first terminal device performs DMRS transmission and / or data transmission, the first terminal device can increase the transmission power on all OFDM symbols used for data transmission.

[0136] Exemplarily, as shown in FIG6A , if UE1 (i.e., the first terminal device) does not transmit DMRS on half of the subcarriers occupied by the second DMRS (i.e., subcarriers 0-5 on symbols 4-13), UE1 may perform a power boost for DMRS transmission and / or a power boost for data transmission on the other half of the subcarriers (i.e., subcarriers 6-11 on symbols 4-13). For example, if UE1 does not transmit DMRS on half of the subcarriers occupied by the second DMRS, the DMRS transmitted by UE1 on the other half of the subcarriers may obtain a 3dB power boost.

[0137] Exemplarily, as shown in Figure 7A, if UE1 (i.e., the first terminal device) does not send DMRS on half of the subcarriers occupied by the second DMRS (i.e., the subcarriers occupied by UE3's DMRS, (i.e., subcarriers 0-5 on symbols 4-13), then UE1 can perform power boosting of DMRS transmission on the other half of the subcarriers (i.e., subcarriers 6-11 on symbols 4-13), and / or perform power boosting of data transmission.

[0138] Exemplarily, as shown in FIG7A , within the data transmission bandwidth of the terminal device, if UE1 does not transmit DMRS on the subcarriers occupied by UE2's DMRS and UE3's DMRS, UE1 can obtain a transmission power boost when performing DMRS transmission and / or data transmission.

[0139] It should be noted that, the ratio of the increase in transmission power of the first terminal device on all OFDM symbols used for data transmission is: the ratio of the total number of some subcarriers on all OFDM symbols used for data transmission and the subcarriers used for transmission to the number of subcarriers used for transmission; wherein, the subcarriers used for transmission are: the subcarriers on which the first terminal device performs DMRS transmission and / or data transmission on all OFDM symbols used for data transmission.

[0140] It should be understood that some of the subcarriers on all OFDM symbols used for data transmission are subcarriers on which the first terminal device does not transmit DMRS. For example, as shown in FIG6A , all OFDM symbols used for data transmission are OFDM symbols 4-13, and some of the subcarriers on OFDM symbols 4-13 may be subcarriers 0-5 of OFDM symbols 4-13. The first terminal device may not transmit DMRS on subcarriers 0-5 of OFDM symbols 4-13.

[0141] It should also be understood that the subcarriers used for transmission are: the subcarriers other than the subcarriers in all OFDM symbols used for data transmission. For example, as shown in FIG6A , if the first terminal device does not perform DMRS transmission on subcarriers 0-5 on OFDM symbols 4-13, the subcarriers used for transmission are subcarriers 6-11 on OFDM symbols 4-13.

[0142] It should also be understood that, on all OFDM symbols used for data transmission, some subcarriers are subcarriers that are not used to send DMRS, and the subcarriers used to send DMRS are other subcarriers except these subcarriers. The first terminal device can allocate the transmission power of some subcarriers to the power of other subcarriers used to send DMRS, thereby increasing the transmission power of other subcarriers.

[0143] For example, as shown in FIG6A , if the first terminal device does not perform DMRS transmission on subcarriers 0-5 on OFDM symbol 4-13, and performs DMRS transmission on subcarriers 6-11 on OFDM symbol 4-13, the first terminal device can allocate the transmission power of subcarriers 0-5 to the transmission power of subcarriers 6-11, thereby increasing the transmission power of subcarriers 6-11.

[0144] Through this method, since the first terminal device does not perform DMRS transmission on some subcarriers on all OFDM symbols used for data transmission, the saved power can be used for uplink DMRS transmission and / or uplink data transmission on these OFDM symbols. Therefore, when the first terminal device performs DMRS transmission and / or data transmission on these OFDM symbols, it can obtain power gain, thereby improving the performance of uplink channel estimation.

[0145] In some embodiments, the receiving power of the first terminal device for downlink DMRS reception and / or downlink data reception remains unchanged on all OFDM symbols used for data reception.

[0146] That is to say, on all OFDM symbols used for data reception, the receiving power of the subcarriers used for downlink reception and the subcarriers not used for downlink reception are the same, and the first terminal device cannot obtain an increase in receiving power when performing downlink DMRS reception and / or downlink data reception.

[0147] In some embodiments, the first DMRS configuration and the second DMRS configuration respectively indicate the first DMRS resource and the second DMRS resource through different DMRS ports; and / or respectively indicate the first DMRS resource and the second DMRS resource through different DMRS types.

[0148] Exemplarily, the first terminal device and the network device may predefine a group of DMRS ports for the first DMRS resource and another group of DMRS ports for the second DMRS resource, and the network device may indicate the first DMRS resource and the second DMRS resource by indicating the corresponding DMRS ports.

[0149] Exemplarily, the first terminal device and the network device can pre-define a DMRS type (e.g., DMRS Type 1 or DMRS Type 2) for the first DMRS resource, and define another DMRS type (e.g., DMRS Type 3) for the second DMRS resource, and the network device can indicate the first DMRS resource and the second DMRS resource by indicating the corresponding DMRS type.

[0150] S520. The network device and the first terminal device perform DMRS transmission and / or reception, and / or data transmission and / or reception, based on the first DMRS configuration and the second DMRS configuration.

[0151] It should be noted that, based on the first DMRS configuration, the first terminal device may neither perform DMRS transmission and / or reception nor data transmission and / or reception on the first DMRS resource indicated by the first DMRS configuration, that is, perform rate matching on the data; and the first terminal device may not perform DMRS transmission and / or reception on the second DMRS resource indicated by the second DMRS configuration, but still perform data transmission and / or reception, based on the second DMRS configuration.

[0152] That is to say, in an embodiment of the present application, the first DMRS resource and the second DMRS resource are both used for DMRS transmission and / or reception by terminal devices other than the first terminal device, and the time-frequency resources used for data transmission and / or reception by other terminal devices overlap with at least part of the time-frequency resources used for data transmission and / or reception by the first terminal device.

[0153] It should be noted that at least part of the time-frequency resources can be one of the two parts of time-frequency resources (i.e., the time-frequency resources used for other terminal devices to send and / or receive data, and the time-frequency resources used for the first terminal device to send and / or receive data), or it can be multiple time-frequency resources (not all time-frequency resources) in the two parts of time-frequency resources, or it can be all the time-frequency resources in the two parts of time-frequency resources. The embodiments of the present application are not limited to this.

[0154] Exemplarily, as shown in Figures 8A and 8B, on the time-frequency resources for resource multiplexing between UE1 (i.e., the first terminal device) and other UEs, the time-frequency resources occupied by DMRS 1 and DMRS 2 are used for UE1 to send and / or receive DMRS, and are not used for other UEs to send and / or receive DMRS; the time-frequency resources occupied by the DMRS of other UEs (i.e., the first DMRS resources and the second DMRS resources) are used for other UEs to send and / or receive DMRS, and are not used for UE1 to send and / or receive DMRS.

[0155] Based on S520, the network device and the first terminal device may send and / or receive DMRS in the following two implementation methods:

[0156] A possible implementation method is that among the time-frequency resources used for the first terminal device to send and / or receive data, the network device can send and / or receive DMRS with the first terminal device on other time-frequency resources except the first DMRS resource and the second DMRS resource.

[0157] 6A and 6B , the time-frequency resources occupied by the DMRS of UE1 (i.e., the first terminal device) are time-frequency resources other than the first DMRS resources and the second DMRS resources. Then, UE1 can send and / or receive DMRS with the network device on the time-frequency resources occupied by the DMRS of UE1.

[0158] For example, as shown in Figures 7A and 7B, the first DMRS configuration indicates the time-frequency resources occupied by UE2's DMRS (i.e., the first DMRS resources), and the second DMRS configuration indicates the time-frequency resources occupied by UE3's DMRS (i.e., the second DMRS resources). Then, UE1 can send and / or receive DMRS with the network device on the time-frequency resources occupied by UE1's DMRS (i.e., the time-frequency resources other than the first DMRS resources and the second DMRS resources).

[0159] Through this method, among the time-frequency resources used for the first terminal device to send and / or receive data, the network device can perform DMRS transmission and / or reception with the first terminal device on other time-frequency resources except the first DMRS resource and the second DMRS resource, thereby eliminating the need for special signaling to indicate the time-frequency resources used for DMRS transmission and / or reception of the first terminal device, thereby saving signaling overhead.

[0160] In another possible implementation, the network device may send a third DMRS configuration to the first terminal device; wherein the third DMRS configuration indicates a third DMRS resource used for DMRS transmission and / or reception and for data transmission and / or reception; or indicates the third DMRS resource and a fourth DMRS resource used for DMRS transmission and / or reception and not used for data transmission and / or reception. The third DMRS resource may be used for superimposed transmission and / or reception of the DMRS and data by the first terminal device.

[0161] It should be noted that the superimposed transmission and / or reception of the DMRS and data of the first terminal device means that for the first terminal device, the DMRS and data can occupy the same third DMRS resource and be transmitted and / or received at a certain power ratio. In other words, for the first terminal device, the DMRS and data can be transmitted and / or received on the third DMRS resource at a certain power ratio.

[0162] Correspondingly, the first terminal device can receive the third DMRS configuration sent by the network device.

[0163] Further, the first terminal device can send and / or receive DMRS with the network device on the third DMRS resource; or, the first terminal device can send and / or receive DMRS with the network device on the third DMRS resource and the fourth DMRS resource.

[0164] In some embodiments, the third DMRS resource occupies part of all subcarriers on an OFDM symbol used for data transmission and / or reception; or, the third DMRS resource occupies part of subcarriers on all OFDM symbols used for data transmission and / or reception.

[0165] Exemplarily, as shown in FIG6A , the third DMRS resource includes subcarriers 6-11 on OFDM symbols 4-13. On the third DMRS resource, the first terminal device performs both DMRS transmission and / or reception and data transmission and / or reception. The fourth DMRS resource includes even-numbered subcarriers on OFDM symbol 3. On the fourth DMRS resource, the first terminal device can perform DMRS transmission and / or reception but not data transmission and / or reception. The first terminal device can transmit and / or receive data on the second DMRS resource and the third DMRS resource (i.e., OFDM symbols 4-13 and subcarriers 0-11).

[0166] Exemplarily, as shown in FIG6B , the third DMRS resource includes all subcarriers on OFDM symbols 4-8, and the first terminal device performs both DMRS transmission and / or reception and data transmission and / or reception on the third DMRS resource; the fourth DMRS resource includes the even-numbered subcarriers on OFDM symbol 3, and the first terminal device can perform DMRS transmission and / or reception but not data transmission and / or reception on the fourth DMRS resource. The first terminal device can transmit and / or receive data on the second DMRS resource and the third DMRS resource (i.e., OFDM symbols 4-13 and subcarriers 0-11).

[0167] In some embodiments, the fourth DMRS resource occupies part of subcarriers on 1 or 2 OFDM symbols.

[0168] Exemplarily, the fourth DMRS resource may occupy odd or even subcarriers on one or two OFDM symbols. For example, as shown in Figures 6A and 6B , the fourth DMRS resource may occupy an even subcarrier on OFDM symbol 3. For another example, as shown in Figures 7A and 7B , the fourth DMRS resource may occupy an even subcarrier on OFDM symbol 3.

[0169] In some embodiments, where the third DMRS configuration indicates a third DMRS resource and a fourth DMRS resource, the third DMRS configuration indicates the third DMRS resource and the fourth DMRS resource through different DMRS ports.

[0170] It should be noted that, since the third DMRS resource and the second DMRS resource use a similar DMRS resource occupation method, the third DMRS resource and the second DMRS resource can use the same DMRS type but different DMRS ports. Similarly, since the fourth DMRS resource and the first DMRS resource use a similar resource occupation method, the fourth DMRS resource and the first DMRS resource can also use different DMRS ports. Based on this, the network device can indicate the third DMRS resource and the fourth DMRS resource through different DMRS ports.

[0171] Through this method, the network device can instruct the first terminal device to use the third DMRS resource for DMRS transmission and / or reception, or instruct the first terminal device to use the third DMRS resource and the fourth DMRS resource for DMRS transmission and / or reception. These resources are orthogonal to the first DMRS resource and the second DMRS resource, thereby avoiding mutual interference between the DMRS transmission and / or reception of the first terminal device and other terminal devices (such as the second terminal device, and the third terminal device) when the first terminal device performs DMRS transmission and / or reception, ensuring the detection performance of the first terminal device and improving the uplink and downlink transmission performance.

[0172] An embodiment of the present application provides a communication method, in which a first terminal device can receive a first DMRS configuration and a second DMRS configuration; wherein the first DMRS configuration indicates a first DMRS resource that is not used for DMRS transmission and / or reception and is not used for data transmission and / or reception, and the second DMRS configuration indicates a second DMRS resource that is used for data transmission and / or reception and is not used for DMRS transmission and / or reception; based on the first DMRS configuration and the second DMRS configuration, DMRS transmission and / or reception is performed, and / or data transmission and / or reception is performed. In this way, after the first terminal device receives the first DMRS configuration and the second DMRS configuration, based on the first DMRS configuration and the second DMRS configuration, mutual interference between the DMRSs for data superposition transmission and / or reception, and / or between the DMRS for data superposition transmission and / or reception and the DMRS for separate transmission and / or reception can be avoided, thereby ensuring the detection performance of the first terminal device and improving the uplink and downlink transmission performance.

[0173] The communication method provided in the embodiment of the present application is described in detail below in conjunction with specific application scenarios.

[0174] Based on the two implementation methods of DMRS sending and / or receiving between the network device and the first terminal device, the embodiments of the present application can be divided into the following two embodiments.

[0175] Embodiment 1: The network device indicates the time-frequency resources used for DMRS transmission and / or reception of the first terminal device through signaling (ie, the third DMRS configuration).

[0176] The network device can indicate a first DMRS configuration and a second DMRS configuration to the first terminal device, wherein the first DMRS configuration indicates a first DMRS resource that cannot be used for DMRS transmission and / or reception and cannot be used for data transmission and / or reception, and the second DMRS configuration indicates a second DMRS resource that is used for data transmission and / or reception but cannot be used for DMRS transmission and / or reception.

[0177] The terminal device may receive the first DMRS configuration and the second DMRS configuration indicated by the network device.

[0178] In some embodiments, the first DMRS resource occupies part of subcarriers on one or more OFDM symbols.

[0179] It should be noted that the first DMRS resource can be a DMRS resource (port) in the NR protocol, that is, Type 1 or Type 2 DMRS in the protocol. The first DMRS resource generally occupies some subcarriers on the first few OFDM symbols of PDSCH / PUSCH. For example, as shown in Figures 6A and 6B, the first DMRS resource can occupy an odd subcarrier in an OFDM symbol.

[0180] It should also be noted that, on the first DMRS resource, the first terminal device does not perform DMRS transmission and / or reception, and does not perform data transmission and / or reception (for example, rate matching of data). The first DMRS resource can be reserved for multiplexing users (including traditional users and / or users performing superimposed transmission and / or reception) to perform DMRS transmission and / or reception, thereby avoiding interference with the DMRS transmission and / or reception of the multiplexed users. In this case, the technical solution provided in the embodiment of the present application can be used to support multiplexing of the first terminal device with a terminal device that performs DMRS transmission and / or reception separately.

[0181] In some embodiments, when the first terminal device performs data transmission and / or DMRS transmission, the first terminal device can perform a transmission power boost on one or more OFDM symbols. Since the first terminal device does not perform DMRS transmission and does not perform data transmission on the subcarriers of the first DMRS resource, the saved power can be used for data transmission and / or DMRS transmission on these OFDM symbols. As shown in Figures 6A and 6B, if the first terminal device transmits DMRS on half of the subcarriers of an OFDM symbol and the first DMRS resource is configured on the other half of the subcarriers, the DMRS sent by the first terminal device on the OFDM symbol can obtain a 3dB power boost.

[0182] In some embodiments, the first DMRS resource can be used for interference measurement of other terminal devices. Since the first DMRS resource is actually used by other terminal devices to perform DMRS transmission and / or reception, the first terminal device can perform interference measurement on the first DMRS resource to obtain the interference from other terminal devices, thereby using it for interference suppression by the receiver. At the same time, when measuring interference, the first terminal device can assume that the first DMRS resource is used to transmit and / or receive DMRS of the interfering user, rather than to transmit and / or receive data.

[0183] In some embodiments, the second DMRS resources may occupy all subcarriers on a portion of OFDM symbols used for data transmission and / or reception, or the second DMRS resources may occupy some subcarriers on all OFDM symbols used for data transmission and / or reception.

[0184] Exemplarily, as shown in FIG6A , the second DMRS resources may occupy half of the subcarriers on all OFDM symbols used for data transmission and / or reception.

[0185] Exemplarily, as shown in FIG6B , the second DMRS resources may occupy all subcarriers on half of the OFDM symbols used for data transmission and / or reception.

[0186] In some embodiments, when the second DMRS resource occupies part of the subcarriers on all OFDM symbols used for data transmission and / or reception, and the first terminal device performs uplink data and / or uplink DMRS transmission and / or reception, the first terminal device can perform a transmission power boost on all OFDM symbols used for data transmission and / or reception. For example, as shown in Figure 6A, the second DMRS resource occupies half of the subcarriers on all OFDM symbols used for data transmission and / or reception, then the DMRS sent and / or received on the other half of the subcarriers can have a 3dB power boost. Considering that the first DMRS resource also occupies half of the subcarriers of an OFDM symbol, and the other half of the subcarriers are also used to send and / or receive the DMRS of the first terminal device, at this time all DMRS of the first terminal device can obtain a 3dB power boost, thereby improving the performance of uplink channel estimation.

[0187] In some embodiments, the first DMRS configuration and the second DMRS configuration may be indicated by different DMRS ports, or by different DMRS types. For example, the first terminal device and the network device may predefine a set of DMRS ports for the first DMRS configuration, and then define another set of DMRS ports for the second DMRS configuration, and the network device may indicate the first DMRS configuration and the second DMRS configuration by indicating the corresponding DMRS ports; for another example, the first terminal device and the network device may predefine a DMRS type (e.g., DMRS Type 1 or DMRS Type 2) for the first DMRS configuration, and then define another DMRS type (e.g., DMRS Type 3) for the second DMRS configuration, and the network device may indicate the first DMRS configuration and the second DMRS configuration by indicating the corresponding DMRS types.

[0188] In some embodiments, the first terminal device may receive a third DMRS configuration indicated by the network device, where the third DMRS configuration indicates a DMRS resource used by the first terminal device to send or receive a DMRS.

[0189] In some embodiments, the DMRS resources indicated by the third DMRS configuration may include third DMRS resources, where the third DMRS resources are used for both DMRS transmission and / or reception and data transmission and / or reception.

[0190] In some other embodiments, the DMRS resources indicated by the third DMRS configuration may include third DMRS resources and fourth DMRS resources, wherein the fourth DMRS resources are not used for data transmission and / or reception but are used for DMRS transmission and / or reception.

[0191] In some embodiments, the third DMRS resource may occupy part of all subcarriers on an OFDM symbol used for data transmission and / or reception, or the third DMRS resource may occupy part of the subcarriers on all OFDM symbols used for data transmission and / or reception; the fourth DMRS resource occupies part of the subcarriers on 1 or 2 OFDM symbols.

[0192] It should be noted that, since the third DMRS resource and the second DMRS resource use a similar DMRS resource occupation method, the third DMRS resource and the second DMRS resource can use the same DMRS type but different DMRS ports. Similarly, since the fourth DMRS resource and the first DMRS resource use a similar DMRS resource occupation method, the fourth DMRS resource and the first DMRS resource can also use different DMRS ports in the DMRS design, that is, the third DMRS resource and the fourth DMRS resource can be indicated by different DMRS ports.

[0193] Exemplarily, as shown in Figure 6A, the third DMRS resource can occupy subcarriers 6-11 in OFDM symbols 4-13, and the first terminal device can perform both DMRS transmission and / or reception and data transmission and / or reception on the third DMRS resource. The fourth DMRS resource occupies the even subcarriers in OFDM symbol 3, and the first terminal device performs DMRS transmission and / or reception but does not perform data transmission and / or reception on the fourth DMRS resource.

[0194] 6B , the third DMRS resource may occupy all subcarriers in OFDM symbols 4-8, and the fourth DMRS resource may occupy even subcarriers in OFDM symbol 3. The first terminal device may transmit and / or receive data on the second DMRS resource and the third DMRS resource, i.e., OFDM symbols 4-13.

[0195] The network device can perform DMRS transmission and / or reception and / or data transmission and / or reception with the first terminal device based on the first DMRS configuration and the second DMRS configuration.

[0196] Exemplarily, the network device can perform DMRS transmission and / or reception with the second terminal device on the first DMRS resource; wherein the time-frequency resources used for the second terminal device to transmit and / or receive data overlap with at least part of the time-frequency resources used for the first terminal device to transmit and / or receive data.

[0197] Exemplarily, the network device can perform DMRS transmission and / or reception with a third terminal device on a second DMRS resource; wherein the time-frequency resources used for data transmission and / or reception by the third terminal device overlap with at least part of the time-frequency resources used for data transmission and / or reception by the first terminal device.

[0198] That is to say, in the embodiment of the present application, the first DMRS resource and the second DMRS resource are both used for other terminal devices (such as the second terminal device, and the third terminal device) to perform DMRS transmission and / or reception, and the time-frequency resources used for other terminal devices to perform data transmission and / or reception overlap with at least part of the time-frequency resources used for the first terminal device to perform data transmission and / or reception. For example, on the time-frequency resources multiplexed by the first terminal device and the other terminal devices, the other terminal devices may adopt the DMRS configuration shown in FIG8A or the DMRS configuration shown in FIG8B.

[0199] The first terminal device can perform DMRS transmission and / or reception, and / or data transmission and / or reception based on the first DMRS configuration and the second DMRS configuration.

[0200] In some embodiments, on the first DMRS resource indicated by the first DMRS configuration, the first terminal device neither performs DMRS transmission and / or reception nor data transmission and / or reception, that is, performs rate matching on the data.

[0201] In some embodiments, on the second DMRS resource indicated by the second DMRS configuration, the first terminal device does not perform DMRS transmission and / or reception, but still performs data transmission and / or reception.

[0202] In the second embodiment, the network device does not need to indicate the time-frequency resources used for DMRS transmission and / or reception of the first terminal device through special signaling.

[0203] The network device can indicate a first DMRS configuration and a second DMRS configuration to the first terminal device; wherein the first DMRS configuration indicates a first DMRS resource that cannot be used for DMRS transmission and / or reception and cannot be used for data transmission and / or reception, and the second DMRS configuration indicates a second DMRS resource that is used for data transmission and / or reception but cannot be used for DMRS transmission and / or reception.

[0204] The first terminal device may receive a first DMRS configuration and a second DMRS configuration indicated by a network device.

[0205] In some embodiments, the first DMRS resource may occupy part of subcarriers on one or more OFDM symbols.

[0206] It should be noted that the first DMRS resource can be a DMRS resource (port) in the NR protocol, that is, Type 1 or Type 2 DMRS in the protocol. The first DMRS resource generally occupies some subcarriers on the first few OFDM symbols of PDSCH / PUSCH and can be used for the first terminal device to be multiplexed with other terminal devices configured with DMRS. For example, as shown in the DMRS of UE2 in Figures 7A and 7B, the first DMRS resource can occupy an odd subcarrier in an OFDM symbol.

[0207] In some embodiments, on the first DMRS resource, the first terminal device does not perform DMRS transmission and / or reception, and does not perform data transmission and / or reception (for example, data is rate matched to the first DMRS resource). The first DMRS resource can be reserved for multiplexing users to perform DMRS transmission and / or reception (for example, DMRS transmission and / or reception for UE2 in Figures 7A and 7B), thereby avoiding interference with the DMRS transmission and / or reception of the multiplexing users.

[0208] In some embodiments, the first DMRS resource can be used for interference measurement of other terminal devices. For example, as shown in Figures 7A and 7B, the first DMRS resource is actually used for DMRS transmission and / or reception of UE2, so interference from UE2 can be measured on the first DMRS resource.

[0209] In some embodiments, the second DMRS resources may occupy all subcarriers on a portion of OFDM symbols used for data transmission and / or reception, or the second DMRS resources may occupy some subcarriers on all OFDM symbols used for data transmission and / or reception.

[0210] Exemplarily, the second DMRS resource may occupy half of the subcarriers on all OFDM symbols used for data transmission and / or reception, and may be used to transmit and / or receive the DMRS of another UE (such as UE3), as shown by the DMRS of UE3 in FIG7A .

[0211] Exemplarily, the second DMRS resource may occupy all subcarriers on half of the OFDM symbols used for data transmission and / or reception, and may be used to send and / or receive the DMRS of another UE (such as UE3), as shown in the DMRS of UE3 in FIG7B .

[0212] Exemplarily, as shown in FIG7A , the second DMRS resource occupies half of the subcarriers or 1 / 4 of the subcarriers on all OFDM symbols used for data transmission, and the first DMRS resource occupies part of the subcarriers in an OFDM symbol. Then, on these OFDM symbols, the first terminal device (i.e., UE1) can perform power boosting when performing DMRS transmission and / or data transmission.

[0213] In some embodiments, the first terminal device may send or receive DMRS on other resources other than the DMRS resources indicated by the first DMRS configuration and the second DMRS configuration in the time-frequency resources used for data transmission and / or reception. For example, as shown in Figures 7A and 7B, OFDM symbols 3-13 are used for data transmission and / or reception of UE1 (i.e., the first terminal device), the first DMRS configuration is used to indicate the time-frequency resources occupied by UE2's DMRS (i.e., the first DMRS resources), and the second DMRS configuration is used to indicate the time-frequency resources occupied by UE3's DMRS (i.e., the second DMRS resources). For UE1, in addition to the DMRS resources indicated by the first DMRS configuration and the second DMRS configuration, other time-frequency resources on OFDM symbols 3-13 can be used to send and / or receive UE1's DMRS (these resources can also be used to send and / or receive UE1's data). In this way, there is no need for special signaling to indicate the time-frequency resources used for DMRS transmission and / or reception of the first terminal device, thereby saving signaling overhead.

[0214] The network device can perform DMRS transmission and / or reception and data transmission and / or reception with the first terminal device based on the first DMRS configuration and the second DMRS configuration.

[0215] In some embodiments, a network device may perform DMRS transmission and / or reception with a second terminal device on a first DMRS resource; wherein the time-frequency resources used for data transmission and / or reception by the second terminal device overlap with at least a portion of the time-frequency resources used for data transmission and / or reception by the first terminal device. For example, the DMRS resources of the second terminal device (i.e., UE2) may be as shown in Figures 7A and 7B.

[0216] In some embodiments, the network device may perform DMRS transmission and / or reception with a third terminal device on the second DMRS resource; the time-frequency resources used for data transmission and / or reception by the third terminal device overlap with at least a portion of the time-frequency resources used for data transmission and / or reception by the first terminal device. For example, the DMRS resources of the third terminal device (i.e., UE3) may be as shown in Figures 7A and 7B.

[0217] That is to say, in an embodiment of the present application, the first DMRS resource and the second DMRS resource can be used for DMRS transmission and / or reception of the second terminal device and the third terminal device, respectively, wherein the time-frequency resources used for data transmission and / or reception by the second terminal device overlap with at least part of the time-frequency resources used for data transmission and / or reception by the first terminal device, and the time-frequency resources used for data transmission and / or reception by the third terminal device overlap with at least part of the time-frequency resources used for data transmission and / or reception by the first terminal device. For example, on the time-frequency resources multiplexed by the first terminal device (i.e., UE1), the second terminal device (i.e., UE2), and the third terminal device (i.e., UE3), the three terminal devices can adopt the DMRS configuration shown in Figures 7A and 7B.

[0218] The first terminal device can perform DMRS transmission and / or reception and data transmission and / or reception based on the first DMRS configuration and the second DMRS configuration.

[0219] In some embodiments, on the first DMRS resource indicated by the first DMRS configuration, the first terminal device neither performs DMRS transmission and / or reception nor data transmission and / or reception, that is, performs rate matching on the data.

[0220] In some embodiments, on the second DMRS resource indicated by the second DMRS configuration, the first terminal device does not perform DMRS transmission and / or reception, but still performs data transmission and / or reception.

[0221] An embodiment of the present application provides a communication method that can avoid mutual interference between DMRSs that are sent and / or received in superposition with data, or between DMRSs that are sent and / or received in superposition with data and DMRSs that are sent and / or received separately, and supports MU-MIMO multiplexing sending and / or receiving between users that send and / or receive DMRS and data in superposition and traditional users and other superposition sending and / or receiving users, thereby improving uplink and downlink transmission performance.

[0222] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, the technical solution of the present application can be subjected to a variety of simple modifications, and these simple modifications all fall within the scope of protection of the present application. For example, the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present application will no longer describe the various possible combinations separately. For another example, the various different embodiments of the present application can also be arbitrarily combined, as long as they do not violate the idea of ​​the present application, they should also be regarded as the contents disclosed in the present application. For another example, under the premise of no conflict, the various embodiments and / or the technical features in each embodiment described in the present application can be arbitrarily combined with the prior art, and the technical solution obtained after the combination should also fall within the scope of protection of the present application.

[0223] It should also be understood that in the various method embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0224] FIG9 is a schematic diagram of the structure of a terminal device 900 provided in an embodiment of the present application. As shown in FIG9 , the terminal device 900 may include:

[0225] The first communication unit 910 is configured to receive a first demodulation reference signal (DMRS) configuration and a second DMRS configuration; wherein the first DMRS configuration indicates a first DMRS resource that is not used for DMRS transmission and / or reception and is not used for data transmission and / or reception, and the second DMRS configuration indicates a second DMRS resource that is used for data transmission and / or reception and is not used for DMRS transmission and / or reception;

[0226] The first communication unit 910 is further configured to perform DMRS transmission and / or reception, and / or data transmission and / or reception, based on the first DMRS configuration and the second DMRS configuration.

[0227] In some embodiments, the first DMRS resource occupies part of subcarriers on one or more orthogonal frequency division multiplexing (OFDM) symbols.

[0228] In some embodiments, as shown in FIG9 , the terminal device 900 may further include:

[0229] The processing unit 920 is configured to perform power boosting of DMRS transmission and / or power boosting of data transmission on one or more OFDM symbols.

[0230] In some embodiments, the first DMRS resource is used for interference measurement of terminal devices other than the first terminal device.

[0231] In some embodiments, the second DMRS resources occupy part of all subcarriers on OFDM symbols used for data transmission and / or reception; or, the second DMRS resources occupy part of subcarriers on all OFDM symbols used for data transmission and / or reception.

[0232] In some embodiments, the processing unit 920 is further configured to perform power boosting of DMRS transmission and / or power boosting of data transmission on all OFDM symbols used for data transmission.

[0233] In some embodiments, the first DMRS configuration and the second DMRS configuration respectively indicate the first DMRS resource and the second DMRS resource through different DMRS ports; and / or respectively indicate the first DMRS resource and the second DMRS resource through different DMRS types.

[0234] In some embodiments, the first communication unit 910 is further configured to perform DMRS transmission and / or reception on other time-frequency resources other than the first DMRS resource and the second DMRS resource among the time-frequency resources used for the first terminal device to send and / or receive data.

[0235] In some embodiments, the first communication unit 910 is further configured to receive a third DMRS configuration; wherein the third DMRS configuration indicates a third DMRS resource used for DMRS transmission and / or reception and for data transmission and / or reception; or, indicates a third DMRS resource and a fourth DMRS resource used for DMRS transmission and / or reception and not for data transmission and / or reception.

[0236] In some embodiments, the third DMRS resource occupies part of all subcarriers on an OFDM symbol used for data transmission and / or reception; or, the third DMRS resource occupies part of subcarriers on all OFDM symbols used for data transmission and / or reception.

[0237] In some embodiments, the fourth DMRS resource occupies part of subcarriers on 1 or 2 OFDM symbols.

[0238] In some embodiments, when the third DMRS configuration indicates the third DMRS resource and the fourth DMRS resource, the third DMRS configuration indicates the third DMRS resource and the fourth DMRS resource through different DMRS ports.

[0239] An embodiment of the present application provides a terminal device, which can receive a first DMRS configuration and a second DMRS configuration; wherein the first DMRS configuration indicates a first DMRS resource that is not used for DMRS transmission and / or reception and is not used for data transmission and / or reception, and the second DMRS configuration indicates a second DMRS resource that is used for data transmission and / or reception and is not used for DMRS transmission and / or reception; based on the first DMRS configuration and the second DMRS configuration, DMRS transmission and / or reception is performed, and / or data transmission and / or reception is performed. In this way, after receiving the first DMRS configuration and the second DMRS configuration, the terminal device can avoid mutual interference between the DMRSs for data superposition transmission and / or reception, and / or between the DMRS for data superposition transmission and / or reception and the DMRS for separate transmission and / or reception based on the first DMRS configuration and the second DMRS configuration, thereby ensuring the detection performance of the first terminal device and improving the uplink and downlink transmission performance.

[0240] Those skilled in the art should understand that the relevant description of the above-mentioned terminal device in the embodiment of the present application can be understood with reference to the relevant description of the communication method in the embodiment of the present application.

[0241] FIG10 is a schematic diagram of the structure of a network device 1000 provided in an embodiment of the present application. As shown in FIG10 , the network device 1000 may include:

[0242] The second communication unit 1010 is configured to send a first demodulation reference signal DMRS configuration and a second DMRS configuration to the first terminal device; wherein the first DMRS configuration indicates a first DMRS resource that is not used for DMRS transmission and / or reception and is not used for data transmission and / or reception, and the second DMRS configuration indicates a second DMRS resource that is used for data transmission and / or reception and is not used for DMRS transmission and / or reception;

[0243] The second communication unit 1010 is further configured to perform DMRS transmission and / or reception, and / or data transmission and / or reception, with the first terminal device based on the first DMRS configuration and the second DMRS configuration.

[0244] In some embodiments, the first DMRS resource occupies part of subcarriers on one or more orthogonal frequency division multiplexing (OFDM) symbols.

[0245] In some embodiments, the second communication unit 1010 is further configured to perform DMRS transmission and / or reception with the second terminal device on the first DMRS resources; wherein the time-frequency resources used for data transmission and / or reception by the second terminal device overlap with at least part of the time-frequency resources used for data transmission and / or reception by the first terminal device.

[0246] In some embodiments, the second DMRS resources occupy part of all subcarriers on OFDM symbols used for data transmission and / or reception; or, the second DMRS resources occupy part of subcarriers on all OFDM symbols used for data transmission and / or reception.

[0247] In some embodiments, the second communication unit 1010 is further configured to perform DMRS transmission and / or reception with a third terminal device on a second DMRS resource; wherein the time-frequency resources used for data transmission and / or reception by the third terminal device overlap with at least part of the time-frequency resources used for data transmission and / or reception by the first terminal device.

[0248] In some embodiments, the first DMRS configuration and the second DMRS configuration respectively indicate the first DMRS resource and the second DMRS resource through different DMRS ports; and / or respectively indicate the first DMRS resource and the second DMRS resource through different DMRS types.

[0249] In some embodiments, the second communication unit 1010 is further configured to perform DMRS transmission and / or reception with the first terminal device on other time-frequency resources other than the first DMRS resources and the second DMRS resources among the time-frequency resources used for data transmission and / or reception by the first terminal device.

[0250] In some embodiments, the second communication unit 1010 is further configured to send a third DMRS configuration to the first terminal device; wherein the third DMRS configuration indicates a third DMRS resource used for DMRS transmission and / or reception and for data transmission and / or reception; or, indicates a third DMRS resource and a fourth DMRS resource used for DMRS transmission and / or reception and not for data transmission and / or reception.

[0251] In some embodiments, the third DMRS resource occupies part of all subcarriers on an OFDM symbol used for data transmission and / or reception; or, the third DMRS resource occupies part of subcarriers on all OFDM symbols used for data transmission and / or reception.

[0252] In some embodiments, the fourth DMRS resource occupies part of subcarriers on 1 or 2 OFDM symbols.

[0253] In some embodiments, when the third DMRS configuration indicates the third DMRS resource and the fourth DMRS resource, the third DMRS configuration indicates the third DMRS resource and the fourth DMRS resource through different DMRS ports.

[0254] An embodiment of the present application provides a network device that can send a first DMRS configuration and a second DMRS configuration to a first terminal device; wherein the first DMRS configuration indicates a first DMRS resource that is not used for DMRS transmission and / or reception and is not used for data transmission and / or reception, and the second DMRS configuration indicates a second DMRS resource that is used for data transmission and / or reception and is not used for DMRS transmission and / or reception; the network device can perform DMRS transmission and / or reception, and / or data transmission and / or reception, with the first terminal device based on the first DMRS configuration and the second DMRS configuration. In this way, by sending the first DMRS configuration and the second DMRS configuration to the first terminal device, the network device enables the first terminal device to avoid mutual interference between DMRSs for superimposed transmission and / or reception of data, and / or between DMRSs for superimposed transmission and / or reception of data and DMRSs for separate transmission and / or reception based on the first DMRS configuration and the second DMRS configuration, thereby ensuring the detection performance of the first terminal device and improving the uplink and downlink transmission performance.

[0255] Those skilled in the art should understand that the relevant description of the above-mentioned network device in the embodiment of the present application can be understood with reference to the relevant description of the communication method in the embodiment of the present application.

[0256] FIG11 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. The communication device 1100 may be a terminal device or a network device. The communication device 1100 shown in FIG11 may include a processor 1110, a memory 1120, and a transceiver 1130, wherein:

[0257] Memory 1120, for storing computer programs;

[0258] The processor 1110 is connected to the memory 1120 and is configured to call and execute a computer program from the memory 1120 to implement the method in the embodiment of the present application;

[0259] The transceiver 1130 is also called a communication interface, and is used to send and receive information when sending and receiving information with other external devices.

[0260] In some embodiments, the memory 1120 may be a separate device independent of the processor 1110 , or may be integrated into the processor 1110 .

[0261] In some embodiments, the transceiver 1130 may include an input interface, wherein the processor 1110 may control the input interface to communicate with other external devices, specifically, to receive information or data sent by other external devices.

[0262] In some embodiments, the transceiver 1130 may include an output interface, wherein the processor 1110 may control the output interface to communicate with other external devices, specifically, to send information or data to other external devices.

[0263] In some embodiments, the transceiver 1130 may include a transmitter and a receiver. The transceiver 1130 may further include an antenna, which may be one or more.

[0264] In some embodiments, the communication device 1100 can be applied to the network device of the embodiment of the present application, and the communication device 1100 can implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0265] In some embodiments, the communication device 1100 can be applied to the first terminal device of the embodiment of the present application, and the communication device 1100 can implement the corresponding processes implemented by the first terminal device in the various methods of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0266] Figure 12 is a schematic structural diagram of a chip provided in an embodiment of the present application. The chip 1200 shown in Figure 12 includes a processor 1210, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0267] In some embodiments, as shown in FIG12 , the chip 1200 may further include a memory 1220. The processor 1210 may call and execute a computer program from the memory 1220 to implement the method in the embodiment of the present application.

[0268] The memory 1220 may be a separate device independent of the processor 1210 , or may be integrated into the processor 1210 .

[0269] In some embodiments, the chip 1200 may further include an input interface 1230. The processor 1210 may control the input interface 1230 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0270] In some embodiments, the chip 1200 may further include an output interface 1240. The processor 1210 may control the output interface 1240 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0271] In some embodiments, the chip can be applied to the first terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the first terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0272] In some embodiments, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0273] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0274] FIG13 is a schematic block diagram of a communication system provided in an embodiment of the present application. As shown in FIG13 , the communication system 1300 includes a terminal device 1310 and a network device 1320 .

[0275] Among them, the terminal device 1310 can be the first terminal device in the embodiment of the present application, the terminal device 1310 can be used to implement the corresponding functions implemented by the first terminal device in the above method, and the network device 1320 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they will not be repeated here.

[0276] It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0277] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may 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), or a flash memory. The volatile memory may 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), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0278] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0279] An embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by at least one processor, the method in the embodiment of the present application is implemented.

[0280] In some embodiments, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0281] In some embodiments, the computer-readable storage medium can be applied to the first terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the first terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0282] An embodiment of the present application also provides a computer program product, which includes a computer storage medium, the computer storage medium storing a computer program, and the computer program including instructions that can be executed by at least one processor. When the instructions are executed by at least one processor, the method in the embodiment of the present application is implemented.

[0283] In some embodiments, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0284] In some embodiments, the computer program product can be applied to the first terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the first terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0285] The embodiments of the present application also provide a computer program, which enables a computer to execute the method in the embodiments of the present application.

[0286] In some embodiments, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0287] In some embodiments, the computer program can be applied to the first terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the first terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0288] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0289] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0290] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0291] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0292] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0293] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0294] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A communication method, applied to a first terminal device, includes: Receiving a first demodulation reference signal (DMRS) configuration and a second DMRS configuration; wherein, the first DMRS configuration indicates a first DMRS resource that is not used for DMRS transmission and / or reception and not used for data transmission and / or reception, and the second DMRS configuration indicates a second DMRS resource that is used for data transmission and / or reception and not used for DMRS transmission and / or reception; Based on the first DMRS configuration and the second DMRS configuration, performing DMRS transmission and / or reception, and / or performing data transmission and / or reception.

2. The method according to claim 1, wherein The first DMRS resource occupies partial subcarriers on one or more orthogonal frequency division multiplexing (OFDM) symbols.

3. The method according to claim 2, wherein It further includes: Performing power boost for DMRS transmission, and / or performing power boost for data transmission, on the one or more OFDM symbols.

4. The method according to any one of claims 1 to 3, wherein The first DMRS resource is used for interference measurement of other terminal devices except the first terminal device.

5. The method according to any one of claims 1 to 4, wherein The second DMRS resource occupies all subcarriers on partial OFDM symbols used for data transmission and / or reception; or, the second DMRS resource occupies partial subcarriers on all OFDM symbols used for data transmission and / or reception.

6. The method according to claim 5, wherein, It further includes: Performing power boost for DMRS transmission, and / or performing power boost for data transmission, on all OFDM symbols used for data transmission.

7. The method according to any one of claims 1 to 6, wherein The first DMRS configuration and the second DMRS configuration respectively indicate the first DMRS resource and the second DMRS resource through different DMRS ports; and / or respectively indicate the first DMRS resource and the second DMRS resource through different DMRS types.

8. The method according to any one of claims 1 to 7, wherein It further includes: Performing DMRS transmission and / or reception on other time-frequency resources except the first DMRS resource and the second DMRS resource in the time-frequency resources used for data transmission and / or reception of the first terminal device.

9. The method according to any one of claims 1 to 7, wherein It further includes: Receiving a third DMRS configuration; wherein, the third DMRS configuration indicates a third DMRS resource that is used for DMRS transmission and / or reception and used for data transmission and / or reception; or indicates the third DMRS resource and a fourth DMRS resource that is used for DMRS transmission and / or reception and not used for data transmission and / or reception.

10. The method according to claim 9, wherein, The third DMRS resource occupies all subcarriers on partial OFDM symbols used for data transmission and / or reception; or, the third DMRS resource occupies partial subcarriers on all OFDM symbols used for data transmission and / or reception.

11. The method according to claim 9 or 10, wherein, The fourth DMRS resource occupies partial subcarriers on one or two OFDM symbols.

12. The method according to any one of claims 9 to 11, wherein, In the case where the third DMRS configuration indicates the third DMRS resource and the fourth DMRS resource, the third DMRS configuration indicates the third DMRS resource and the fourth DMRS resource through different DMRS ports.

13. A communication method, includes: Send a first demodulation reference signal (DMRS) configuration and a second DMRS configuration to a first terminal device; wherein, the first DMRS configuration indicates a first DMRS resource that is not used for DMRS transmission and / or reception and not used for data transmission and / or reception, and the second DMRS configuration indicates a second DMRS resource that is used for data transmission and / or reception and not used for DMRS transmission and / or reception; Based on the first DMRS configuration and the second DMRS configuration, perform DMRS transmission and / or reception with the first terminal device, and / or perform data transmission and / or reception.

14. The method according to claim 13, wherein, The first DMRS resource occupies partial subcarriers on one or more orthogonal frequency division multiplexing (OFDM) symbols.

15. The method according to claim 13 or 14, wherein, Further includes: Perform DMRS transmission and / or reception with a second terminal device on the first DMRS resource; wherein, the time-frequency resources for the second terminal device to perform data transmission and / or reception overlap with at least partial time-frequency resources of the time-frequency resources for the first terminal device to perform data transmission and / or reception.

16. The method according to any one of claims 13 to 15, wherein The second DMRS resource occupies all subcarriers on partial OFDM symbols used for data transmission and / or reception; or, the second DMRS resource occupies partial subcarriers on all OFDM symbols used for data transmission and / or reception.

17. The method according to any one of claims 13 to 16, wherein, Further includes: Perform DMRS transmission and / or reception with a third terminal device on the second DMRS resource; wherein, the time-frequency resources for the third terminal device to perform data transmission and / or reception overlap with at least partial time-frequency resources of the time-frequency resources for the first terminal device to perform data transmission and / or reception.

18. The method according to any one of claims 13 to 17, wherein, The first DMRS configuration and the second DMRS configuration respectively indicate the first DMRS resource and the second DMRS resource through different DMRS ports; and / or respectively indicate the first DMRS resource and the second DMRS resource through different DMRS types.

19. The method according to any one of claims 13 to 18, wherein Further includes: Perform DMRS transmission and / or reception with the first terminal device on other time-frequency resources except the first DMRS resource and the second DMRS resource in the time-frequency resources for the first terminal device to perform data transmission and / or reception.

20. The method according to any one of claims 13 to 18, wherein Further includes: Send a third DMRS configuration to the first terminal device; wherein, the third DMRS configuration indicates a third DMRS resource that is used for DMRS transmission and / or reception and used for data transmission and / or reception; or indicates the third DMRS resource and a fourth DMRS resource that is used for DMRS transmission and / or reception and not used for data transmission and / or reception.

21. The method according to claim 20, wherein, The third DMRS resource occupies all subcarriers on partial OFDM symbols used for data transmission and / or reception; or, the third DMRS resource occupies partial subcarriers on all OFDM symbols used for data transmission and / or reception.

22. The method according to claim 20 or 21, wherein, The fourth DMRS resource occupies partial subcarriers on one or two OFDM symbols.

23. The method according to any one of claims 20 to 22, wherein In the case that the third DMRS configuration indicates the third DMRS resource and the fourth DMRS resource, the third DMRS configuration indicates the third DMRS resource and the fourth DMRS resource through different DMRS ports.

24. A terminal device, comprising: A first communication unit configured to receive a first demodulation reference signal (DMRS) configuration and a second DMRS configuration; wherein the first DMRS configuration indicates a first DMRS resource that is not used for DMRS transmission and / or reception and not used for data transmission and / or reception, and the second DMRS configuration indicates a second DMRS resource that is used for data transmission and / or reception and not used for DMRS transmission and / or reception; The first communication unit is further configured to perform DMRS transmission and / or reception, and / or perform data transmission and / or reception based on the first DMRS configuration and the second DMRS configuration.

25. A network device, comprising: A second communication unit configured to send a first demodulation reference signal (DMRS) configuration and a second DMRS configuration to a first terminal device; wherein the first DMRS configuration indicates a first DMRS resource that is not used for DMRS transmission and / or reception and not used for data transmission and / or reception, and the second DMRS configuration indicates a second DMRS resource that is used for data transmission and / or reception and not used for DMRS transmission and / or reception; The second communication unit is further configured to perform DMRS transmission and / or reception with the first terminal device, and / or perform data transmission and / or reception based on the first DMRS configuration and the second DMRS configuration.

26. A terminal device, comprising: A memory for storing a computer program; A processor connected to the memory for calling and running the computer program from the memory to implement the method according to any one of claims 1 to 12; A transceiver for receiving and sending information during the process of receiving and sending information with other external devices.

27. A network device, comprising: A memory for storing a computer program; A processor connected to the memory for calling and running the computer program from the memory to implement the method according to any one of claims 13 to 23; A transceiver for receiving and sending information during the process of receiving and sending information with other external devices.

28. A chip, the chip comprising: A memory for storing a computer program; A processor connected to the memory for calling and running the computer program from the memory, such that a device installed with the chip executes the method according to any one of claims 1 to 12; or executes the method according to any one of claims 13 to 23; A transceiver for receiving and sending information during the process of receiving and sending information with a device or a chip.

29. A computer-readable storage medium stores a computer program, and when the computer program is executed by at least one processor, it implements the method according to any one of claims 1 to 12; or, it implements the method according to any one of claims 13 to 23.

30. A computer program product includes a computer storage medium that stores a computer program. The computer program includes instructions that can be executed by at least one processor. When the instructions are executed by the at least one processor, it implements the method according to any one of claims 1 to 12; or, it implements the method according to any one of claims 13 to 23.

31. A computer program causes a computer to execute the method according to any one of claims 1 to 12; or, to execute the method according to any one of claims 13 to 23.

Images