Communication method and communication device

Abstract

Disclosed are a communication method and a communication device, the method relating to the technical field of communications, the method comprising: a first terminal receiving first information, the first information being used for indicating a first antenna port, the first antenna port being an antenna port associated with physical shared channel transmission of a second terminal; the first terminal receives a physical shared channel of the first terminal based on the first information. Based on the method, the first terminal can detect the interference signal of the second terminal through the first antenna port, and the corresponding interference detection result can be used for the data demodulation of the first terminal, thereby facilitating the improvement of the demodulation performance of the data.

Description

Technical Field

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

[0002] Since the base station can schedule the data of multiple users on the same time-frequency resources during actual scheduling, that is, these users form a multi-user multiple-input multiple-output (MU-MIMO) technical effect of spatial division multiplexing in the same time-frequency resources. The specific implementation of this technical effect can be that when the base station schedules downlink / uplink data transmission, different orthogonal demodulation reference signal (DMRS) ports are assigned to different terminals scheduled at the same time to achieve orthogonal DMRS transmission. However, in actual applications, the terminal can only know the DMRS port corresponding to its own data channel, and the interference signals generated by other terminals during transmission will cause the demodulation performance to degrade. How to improve the demodulation performance of data is an urgent problem to be solved. Summary of the invention

[0003] The present application provides a communication method and a communication device, which are conducive to enabling a terminal to perform interference measurement more accurately, thereby improving demodulation performance.

[0004] In a first aspect, the present application provides a communication method, which includes: receiving first information, the first information is used to indicate a first antenna port, the first antenna port is an antenna port associated with a physical shared channel transmission of a second terminal; and receiving a physical shared channel of the first terminal based on the first information.

[0005] Based on the method described in the first aspect, the first terminal can obtain the antenna port of the second terminal through the first information, and the first terminal can detect the interference signal generated by the second terminal through the first antenna port. The corresponding interference detection result can be used for data demodulation of the first terminal, thereby improving the data demodulation performance.

[0006] In a possible implementation manner, the time-frequency resources of the physical shared channel corresponding to the first terminal and the time-frequency resources of the physical shared channel corresponding to the second terminal are partially or completely the same.

[0007] In a possible implementation manner, the first antenna port and the second antenna port are orthogonal ports, and the second antenna port is an antenna port associated with a physical shared channel of the first terminal.

[0008] In a possible implementation manner, the second antenna port corresponds one-to-one to an antenna port of a physical shared channel of the first terminal.

[0009] In a possible implementation, the method further includes: receiving first configuration information from a network device, the first configuration information including the type and maximum length of a demodulation reference signal DMRS; receiving first downlink control information DCI from the network device, the first DCI including second information, and the second information indicating a second antenna port.

[0010] In a possible implementation manner, the first information is carried in the first DCI, and the number of bits occupied by the first information is related to the type and maximum length of the DMRS.

[0011] In a possible implementation manner, the first information is carried in the second DCI.

[0012] In a possible implementation manner, the number of the first antenna port is at least one, and the first information indicates part or all of the at least one first antenna port.

[0013] In a possible implementation manner, a maximum value of the number of first antenna ports is one of 4, 6, 8, 12, 16, and 24.

[0014] In a possible implementation manner, the first information indicates an index of a first code division multiplexing CDM group, and the first antenna port belongs to the first CDM group.

[0015] In a possible implementation manner, the first information indicates a first port index, where the first port index is an index of an antenna port in the at least one first antenna port.

[0016] In a possible implementation manner, the at least one first antenna port includes antenna ports in a CDM group where some or all antenna ports corresponding to the first port indexes are located.

[0017] In a possible implementation manner, the first port index is the index of the antenna port with the largest index in the at least one first antenna port, and the at least one first antenna port includes an antenna port whose port index is less than or equal to the first port index.

[0018] In yet another possible implementation, the first port index is the index of an antenna port with a largest index among the at least one first antenna port, and the at least one first antenna port includes an antenna port with a port index smaller than the first port index.

[0019] In a possible implementation manner, the at least one first antenna port includes all antenna ports whose port indexes are less than or equal to the first port index.

[0020] In yet another possible implementation manner, the at least one first antenna port includes all antenna ports whose port indexes are smaller than the first port index.

[0021] In a possible implementation, the first antenna port corresponding to the first port index belongs to a first antenna port group, and the at least one first antenna port includes an antenna port in the first antenna port group whose port index is less than or equal to the first port index.

[0022] In yet another possible implementation, the first antenna port corresponding to the first port index belongs to a first antenna port group, and the at least one first antenna port includes an antenna port in the first antenna port group whose port index is smaller than the first port index.

[0023] In a possible implementation manner, the first antenna port includes antenna ports whose port indexes are less than or equal to the first port index in all first antenna port groups.

[0024] In yet another possible implementation, the first antenna port includes antenna ports whose port indexes are smaller than the first port index in all first antenna port groups.

[0025] In a possible implementation manner, the at least one first antenna port is an antenna port whose port index is less than or equal to the first port index in all first antenna port groups.

[0026] In yet another possible implementation manner, the at least one first antenna port is an antenna port whose port index is smaller than the first port index in all first antenna port groups.

[0027] In a possible implementation manner, the first antenna port group is a CDM group.

[0028] In one possible implementation, the method includes: receiving second configuration information from a network device, the second configuration information is used to configure a first resource, the transmission resources of a physical shared channel include the first resource, the first resource is not used to transmit a signal or is used to transmit a reference signal, and the first resource is used to measure an interference signal.

[0029] In a possible implementation, a second resource having the same time and frequency position as the first resource is used for the second terminal to send a signal.

[0030] In a possible implementation manner, before transmitting the physical shared channel based on the first information, the method further includes: receiving a third DCI from a network device, where the third DCI indicates a location of the first resource.

[0031] In a possible implementation manner, the second configuration information indicates a location of the first resource.

[0032] In a possible implementation manner, there are multiple first resources, and time domain locations of any two of the multiple first resources are different.

[0033] In a possible implementation manner, the time interval between any two adjacent first resources among the multiple first resources is equal.

[0034] In one possible implementation, when the number of symbols in the physical shared channel is less than or equal to a first threshold, the number of symbols corresponding to the multiple first resources is a first value; when the number of symbols in the physical shared channel is greater than or equal to the first threshold, the number of symbols corresponding to the multiple first resources is a second value, the second value is greater than the first value, and the first value and the second value are both positive integers.

[0035] In a possible implementation, the method further includes: when the symbol where the first resource is located is the same as the symbol where the DMRS is located, determining that the index of the symbol where the first resource is located is the index of the symbol where the DMRS is located plus 1.

[0036] In a possible implementation manner, each of the multiple first resources corresponds to a DMRS, and the index of the symbol where the first resource is located is the index of the symbol where the corresponding DMRS is located plus 1.

[0037] In a possible implementation manner, the symbol of the first resource is before the Mth symbol occupied by the physical shared channel, the number of symbols occupied by the physical shared channel is N, M and N are positive integers, and M is less than or equal to N.

[0038] In a possible implementation manner, frequency domain positions of two first resources among the multiple first resources are the same or different.

[0039] In a possible implementation manner, frequency domain positions of any two first resources among the multiple first resources are different, and frequency domain intervals of any two adjacent first resources among the multiple first resources are the same.

[0040] In a possible implementation manner, the frequency domain position of the first resource is related to the first identifier, and the first identifier is related to the cell where the first terminal is located.

[0041] In a possible implementation manner, the time domain density and / or frequency domain density of the first resource is related to a modulation and coding scheme MCS corresponding to a physical shared channel.

[0042] In a possible implementation manner, before receiving the second configuration information from the network device, the method further includes: sending capability information to the network device, where the capability information is used to indicate support for the first resource.

[0043] In a possible implementation manner, the second configuration information is carried in radio resource control RRC signaling.

[0044] In a second aspect, the present application provides a communication method, the method comprising: sending first information to a first terminal, the first information being used to indicate a first antenna port, the first antenna port being an antenna port associated with a physical shared channel transmission of a second terminal.

[0045] The second aspect and its beneficial effects can be found in the above-mentioned first aspect and its corresponding description, and will not be elaborated here.

[0046] In a possible implementation manner, the time-frequency resources of the physical shared channel corresponding to the first terminal and the time-frequency resources of the physical shared channel corresponding to the second terminal are partially or completely the same.

[0047] In a possible implementation manner, the first antenna port and the second antenna port are orthogonal ports, and the second antenna port is an antenna port associated with a physical shared channel of the first terminal.

[0048] In a possible implementation manner, the second antenna port corresponds one-to-one to an antenna port of a physical shared channel of the first terminal.

[0049] In a possible implementation, the method further includes: sending first configuration information to the first terminal, the first configuration information including the type and maximum length of a demodulation reference signal DMRS; sending first downlink control information DCI to the first terminal, the first DCI including second information, and the second information indicating a second antenna port.

[0050] In a possible implementation manner, the first information is carried in the first DCI, and the number of bits occupied by the first information is related to the type and maximum length of the DMRS.

[0051] In a possible implementation manner, the first information is carried in the second DCI.

[0052] In a possible implementation manner, the number of the first antenna port is at least one, and the first information indicates part or all of the at least one first antenna port.

[0053] In a possible implementation manner, a maximum value of the number of first antenna ports is one of 4, 6, 8, 12, 16, and 24.

[0054] In a possible implementation manner, the first information indicates an index of a first code division multiplexing CDM group, and the first antenna port belongs to the first CDM group.

[0055] In a possible implementation manner, the first information indicates a first port index, where the first port index is an index of an antenna port in the at least one first antenna port.

[0056] In a possible implementation manner, the at least one first antenna port includes antenna ports in a CDM group where some or all antenna ports corresponding to the first port indexes are located.

[0057] In a possible implementation manner, the first port index is the index of the antenna port with the largest index in the at least one first antenna port, and the at least one first antenna port includes an antenna port whose port index is less than or equal to the first port index.

[0058] In a possible implementation manner, the first port index is the index of the antenna port with the largest index in the at least one first antenna port, and the at least one first antenna port includes an antenna port with a port index smaller than the first port index.

[0059] In a possible implementation manner, the at least one first antenna port includes all antenna ports whose port indexes are less than or equal to the first port index.

[0060] In a possible implementation manner, the at least one first antenna port includes all antenna ports whose port indexes are smaller than the first port index.

[0061] In a possible implementation, the first antenna port corresponding to the first port index belongs to a first antenna port group, and the at least one first antenna port includes an antenna port in the first antenna port group whose port index is less than or equal to the first port index.

[0062] In a possible implementation, the first antenna port corresponding to the first port index belongs to a first antenna port group, and the at least one first antenna port includes an antenna port in the first antenna port group whose port index is smaller than the first port index.

[0063] In a possible implementation manner, the first antenna port includes antenna ports whose port indexes are less than or equal to the first port index in all first antenna port groups.

[0064] In a possible implementation manner, the first antenna port includes antenna ports whose port indexes are smaller than the first port index in all first antenna port groups.

[0065] In a possible implementation manner, the at least one first antenna port is an antenna port whose port index is less than or equal to the first port index in all first antenna port groups.

[0066] In a possible implementation manner, the at least one first antenna port is an antenna port whose port index is smaller than the first port index in all first antenna port groups.

[0067] In a possible implementation manner, the first antenna port group is a CDM group.

[0068] In a possible implementation, the method also includes: second configuration information sent to the first terminal, the second configuration information is used to configure the first resource, the transmission resources of the physical shared channel include the first resource, the first resource is not used to transmit the signal or is used to transmit the reference signal, and the first resource is used to measure the interference signal.

[0069] In a possible implementation, a second resource having the same time and frequency position as the first resource is used for the second terminal to send a signal.

[0070] In a possible implementation manner, before transmitting the physical shared channel based on the first information, the method further includes: sending a third DCI to the first terminal, where the third DCI indicates a location of the first resource.

[0071] In a possible implementation manner, the second configuration information indicates a location of the first resource.

[0072] In a possible implementation manner, there are multiple first resources, and time domain locations of any two of the multiple first resources are different.

[0073] In a possible implementation manner, the time interval between any two adjacent first resources among the multiple first resources is equal.

[0074] In one possible implementation, when the number of symbols in the physical shared channel is less than or equal to a first threshold, the number of symbols corresponding to the multiple first resources is a first value; when the number of symbols in the physical shared channel is greater than or equal to the first threshold, the number of symbols corresponding to the multiple first resources is a second value, the second value is greater than the first value, and the first value and the second value are both positive integers.

[0075] In a possible implementation, the method further includes: when the symbol where the first resource is located is the same as the symbol where the DMRS is located, determining that the index of the symbol where the first resource is located is the index of the symbol where the DMRS is located plus 1.

[0076] In a possible implementation manner, each of the multiple first resources corresponds to a DMRS, and the index of the symbol where the first resource is located is the index of the symbol where the corresponding DMRS is located plus 1.

[0077] In a possible implementation manner, the symbol of the first resource is before the Mth symbol occupied by the physical shared channel, the number of symbols occupied by the physical shared channel is N, M and N are positive integers, and M is less than or equal to N.

[0078] In a possible implementation manner, frequency domain positions of two first resources among the multiple first resources are the same or different.

[0079] In a possible implementation manner, frequency domain positions of any two first resources among the multiple first resources are different, and frequency domain intervals of any two adjacent first resources among the multiple first resources are the same.

[0080] In a possible implementation manner, the frequency domain position of the first resource is related to the first identifier, and the first identifier is related to the cell where the first terminal is located.

[0081] In a possible implementation manner, the time domain density and / or frequency domain density of the first resource is related to a modulation and coding scheme MCS corresponding to a physical shared channel.

[0082] In a possible implementation manner, before sending the second configuration information to the first terminal, the method further includes: receiving capability information from the first terminal, where the capability information is used to indicate support for the first resource.

[0083] In a possible implementation manner, the second configuration information is carried in radio resource control RRC signaling.

[0084] In a third aspect, the present application provides a communication device, wherein the communication device may also be a chip system. The communication device may execute the method described in the first aspect. The functions of the communication device may be implemented by hardware, or by hardware executing corresponding software implementations. The hardware or software includes one or more units or modules corresponding to the above functions. The unit or module may be software and / or hardware. The operations and beneficial effects performed by the communication device may refer to the methods and beneficial effects described in the first aspect above, and the repetitive parts will not be repeated.

[0085] In a fourth aspect, the present application provides a communication device, wherein the communication device may also be a chip system. The communication device may execute the method described in the second aspect. The functions of the communication device may be implemented by hardware, or by hardware executing corresponding software implementations. The hardware or software includes one or more units or modules corresponding to the above functions. The unit or module may be software and / or hardware. The operations and beneficial effects performed by the communication device may refer to the method and beneficial effects described in the second aspect above, and the repetitive parts will not be repeated.

[0086] In a fifth aspect, the present application provides a communication device, comprising a processor, and when the processor calls a computer program in a memory, the method as described in any one of the first aspect or the second aspect and its possible implementation method are executed.

[0087] In a possible implementation, the communication device further includes a memory, and the memory and the processor are coupled to each other. Optionally, the memory and the processor are integrated together.

[0088] In a possible implementation manner, the communication device further includes a transceiver, and the transceiver is used to send and receive data and / or signaling.

[0089] In a sixth aspect, the present application provides a communication device, which includes a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device, and the processor is used to implement the method as described in any one of the first aspect or the second aspect and its possible implementation methods through logic circuits or execution code instructions.

[0090] In a seventh aspect, the present application provides a computer-readable storage medium, in which a computer program or instruction is stored. When the computer program or instruction is executed by a communication device, the method described in the first aspect or the second aspect and its possible implementation methods are implemented.

[0091] In an eighth aspect, an embodiment of the present application provides a computer program or a computer program product, including codes or instructions. When the codes or instructions are executed on a computer, the computer executes the method described in the first aspect or the second aspect and its possible implementation methods.

[0092] In a ninth aspect, an embodiment of the present application provides a communication system, which includes the communication device described in the third aspect and the communication device described in the fourth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0093] Figure 1 A schematic diagram of a communication system provided in an embodiment of the present application;

[0094] Figure 2 A flow chart of a communication method provided in an embodiment of the present application;

[0095] Figure 3 to Figure 9 A schematic diagram of configuring a first resource provided in an embodiment of the present application;

[0096] Fig.10 is a structural diagram of a communication device provided in an embodiment of the present application;

[0097] Fig.11 is a structural diagram of another communication device provided in an embodiment of the present application;

[0098] Fig.12 It is a schematic diagram of the structure of a chip provided in an embodiment of the present application. DETAILED DESCRIPTION

[0099] The terms "first" and "second" and the like in the specification, claims and drawings of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0100] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0101] In the present application, "at least one (item)" means one or more, "more than one" means two or more, "at least two (items)" means two or three and more than three, and "and / or" is used to describe the corresponding relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0102] The following is an introduction to the system architecture of the embodiment of the present application:

[0103] To facilitate understanding of the technical solution of the embodiment of the present application, the system architecture of the method provided by the embodiment of the present application is briefly described below. It is understandable that the system architecture described in the embodiment of the present application is to more clearly illustrate the technical solution of the embodiment of the present application, and does not constitute a limitation on the technical solution provided by the embodiment of the present application.

[0104] The technical solution of the embodiment of the present application can be applied to various communication systems, such as satellite communication systems and traditional mobile communication systems. Among them, the satellite communication system can be integrated with the traditional mobile communication system (i.e., ground communication system). Communication systems such as wireless local area network (WLAN) communication system, wireless fidelity (Wi-Fi) system, long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), fifth generation (5G) system or new radio (NR), and other future communication systems, such as the sixth generation (6G) system, etc., also support communication systems that integrate multiple wireless technologies, for example, it can also be applied to non-terrestrial networks (NTN) such as drones, satellite communication systems, high altitude platform stations (HAPS) communications, and systems that integrate ground mobile communication networks.

[0105] Figure 1 The communication system is an example of a communication system applicable to the embodiment of the present application. The communication system includes at least one network device and at least one terminal. Figure 1 The network device and multiple terminals are taken as examples. The multiple terminals can be cellular phones, smart phones, portable computers, handheld communication devices, handheld computing devices, satellite radio devices, global positioning systems, personal digital assistants (PDAs) and / or any other suitable devices for communicating on a wireless communication system, and can all be connected to the network device. The terminals can all communicate with the network device. Of course Figure 1 The number of terminals and network devices is just an example, and can be less or more.

[0106] The network device in this application has a wireless transceiver function and is used to communicate with the terminal. Specifically, it may refer to a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation base station (next generation NodeB, gNB) in a 5G mobile communication system, a next generation base station in a sixth generation (6th generation, 6G) mobile communication system, an access network device or a module of an access network device in an open access network (open RAN, ORAN) system, a base station in a future mobile communication system, or an access node in a WiFi system, etc. The network device may also be a module or unit that can implement some functions of a base station. For example, the network device may be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU) described below. Among them, in the ORAN system, CU can also be called O-CU, DU can also be called open (open, O)-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CUP-UP, and RU can also be called O-RU. Exemplarily, the base station in the embodiment of the present application may include various forms of base stations, such as: macro base stations, micro base stations (also called small stations), relay stations, access points, next generation base stations (gNodeB, gNB), transmission and receiving points (transmitting and receiving point, TRP), transmitting points (transmitting point, TP), mobile switching centers, and can also be devices that undertake wireless access functions in device-to-device (D2D), vehicle-to-everything (V2X), machine-to-machine (machine-to-machine, M2M) communications, and Internet of Things (Internet of Things) communications. In addition, in this application, unless otherwise specified, "network device" may refer to the network device itself or a component in the network device, such as a chip system, a system-on-a-chip (SOC), which may be installed in the network device.

[0107] The terminal mentioned in the embodiments of the present application may also be referred to as a terminal device, and is collectively referred to as a terminal in the present application. A terminal may be a device with wireless transceiver functions, and may specifically refer to user equipment (UE), access terminal, subscriber unit, user station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent or user device. The terminal may also be a satellite phone, a cellular phone, a smart phone, a wireless data card, a wireless modem, a machine type communication device, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a PDA, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a communication device carried on a high-altitude aircraft, a wearable device, a drone, a robot, a terminal in device-to-device communication (D2D), a terminal in vehicle to everything (V2X), a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. The present application does not limit the wireless terminal in the home or the terminal in the future communication network. In addition, in the present application, when not specifically stated, "terminal" can refer to the terminal itself or a component in the terminal, such as a chip system, SoC, which can be installed in the terminal.

[0108] In order to better understand the embodiments of the present application, the following first introduces the relevant concepts involved in the embodiments of the present application:

[0109] 1. Demodulation reference signal (DMRS)

[0110] DMRS is a signal used to estimate the equivalent channel matrix and equivalent interference matrix experienced by a data channel or a control channel, and is therefore used for data detection and demodulation. Taking the data channel as an example, DMRS is usually precoded in the same way as the transmitted data signal, thereby ensuring that DMRS and data experience the same equivalent channel.

[0111] 2. Multi-user multiple-input multiple-output (MU-MIMO) technology with spatial division multiplexing

[0112] MU-MIMO means that in a wireless communication system, a base station serves multiple terminals at the same time, and the base stations make full use of the spatial resources of the antenna to communicate with multiple terminals at the same time. When scheduling, the base station can schedule multiple terminals to transmit data on the same time-frequency resources, and realize orthogonal DMRS transmission by assigning different orthogonal DMRS ports to different UEs scheduled at the same time. Among them, the two DMRS ports are orthogonal, specifically: the two DMRS ports can be code division orthogonal ports occupying the same time-frequency resources, that is, the two DMRS ports belong to a code division multiplexing (CDM) group, or the two DMRS ports can be frequency division orthogonal ports occupying different time-frequency resources, that is, the two DMRS ports belong to different CDM groups.

[0113] Combining the above MU-MIMO technology, it can be seen that the base station may schedule multiple terminals to communicate simultaneously, and the terminal can only know the DMRS port corresponding to its own data channel. The interference signal generated by other terminals during transmission will cause the demodulation performance to degrade. How to improve the data demodulation performance is an urgent problem to be solved.

[0114] In order to improve the demodulation performance, the present application embodiment proposes a communication method, such as Figure 2 As shown, the communication method includes step 201 and step 202. Figure 2 The execution entities corresponding to the method shown are respectively the first terminal and the network device. Or, Figure 2 The method shown may be executed by the first terminal and a chip in the network device. Figure 2 The first terminal and the network device are used as examples for description. The embodiment of the present application does not limit the execution subject of the communication method. The first terminal can be Figure 1 The terminal shown in the figure can be Figure 1 The network devices shown. Among them:

[0115] 201. A network device sends first information, and correspondingly, a first terminal receives the first information, where the first information is used to indicate a first antenna port, and the first antenna port is an antenna port associated with a physical shared channel transmission of a second terminal.

[0116] In an embodiment of the present application, the first antenna port indicated in the first information sent by the network device is the antenna port corresponding to the second terminal, the second terminal and the first terminal are not the same terminal, and the number of the second terminals can be one or more. The first antenna port is associated with a physical shared channel of the second terminal, and the physical shared channel refers to a physical uplink shared channel (physical uplink shared channel, PUSCH) and a physical downlink shared channel (physical downlink shared channel, PDSCH). The first antenna port can also be understood as an antenna port associated with a PUSCH transmission or a PDSCH transmission of the second terminal, and the number of the first antenna ports can be one or more.

[0117] Among them, the antenna port described in the present application can be understood as a transmitting antenna recognized by the receiving end, or a transmitting antenna that can be distinguished in space. A port can be configured for each virtual antenna, and each virtual antenna can be a weighted combination of multiple physical antennas. The port used to send a reference signal can be called a reference signal port, and the reference signal can be, for example, a DMRS, a channel state information reference signal (channel state information reference signal, CSI-RS) or a sounding reference signal (sounding reference signal, SRS), without specific limitation. Optionally, the first antenna port is a DMRS port, and the first antenna port is associated with the physical shared channel of the second terminal. It can be further understood that the DMRS corresponding to the first antenna port can be used to demodulate the data signal transmitted on the physical shared channel of the second terminal.

[0118] It is also necessary to add that Figure 2 The first information described in the flowchart in is sent by the network device. In addition, the first information can also be obtained by the first terminal through other methods. For example, the first information is sent by the second terminal to the first terminal. The embodiment of the present application does not limit this. Through the first information, the first terminal can know the antenna ports of other terminals. The first terminal can detect the interference signals generated by other terminals through the antenna ports of other terminals. The detection result can be used for data demodulation of the first terminal, thereby improving the demodulation performance of the data.

[0119] In a possible implementation, the time-frequency resources of the physical shared channel corresponding to the first terminal and the time-frequency resources of the physical shared channel corresponding to the second terminal are partially or completely the same. Optionally, the network device can use MU-MIMO technology to schedule the first terminal and the second terminal on the same time-frequency resource, and the second antenna port is an antenna port associated with the physical shared channel of the first terminal, and the second antenna port is an orthogonal port to the first antenna port. Optionally, the second antenna port corresponds one-to-one with the antenna port of the physical shared channel of the first terminal, specifically, the second antenna port corresponds one-to-one with the PUSCH antenna port of the first terminal, or the second antenna port corresponds one-to-one with the PDSCH antenna port of the first terminal. Optionally, the second antenna port is a DMRS port, wherein the antenna port of the physical shared channel corresponds to the second antenna port, and the DMRS transmitted on the second antenna port can be used to demodulate the physical shared channel corresponding to the second antenna port.

[0120] The second antenna port is orthogonal to the first antenna port, the first antenna port and the second antenna port use the same base sequence, the second antenna port and the first antenna port can be code division orthogonal ports occupying the same time-frequency resources, that is, the second antenna port and the first antenna port belong to the same CDM group, or the second antenna port and the first antenna port can be frequency division orthogonal ports occupying different time-frequency resources, that is, the second antenna port and the first antenna port belong to different CDM groups.

[0121] In this implementation, the second terminal and the first terminal both transmit data on the same time-frequency resource. Therefore, the second terminal will interfere with the first terminal. The first terminal knows the antenna port of the second terminal, and can thereby detect the interference of the second terminal on the first terminal, which is beneficial to improving the performance of the first terminal in demodulating data.

[0122] Optionally, the first terminal determines the second antenna port in a specific implementation manner as follows: the network device sends first configuration information to the first terminal, and correspondingly, the first terminal receives the first configuration information from the network device, the first configuration information includes a DMRS type (type) and a maximum length (maxlength), and the first configuration information can be carried in RRC signaling; the network device sends first downlink control information (Downlink Control Information, DCI) to the first terminal, and the first DCI includes second information, and the second information indicates the second antenna port. Specifically, the first terminal can determine a first table according to the DMRS type and the maximum length, and the first table is a DMRS port table, and the first table includes a relationship between the second antenna port and the antenna port of the physical shared channel, wherein in the first table, the second antenna port and the antenna port of the physical shared channel are one-to-one corresponding. The first DCI sent by the network device includes the second information, and the second information includes an indication value. The first terminal can determine a group of second antenna ports allocated by the network device according to the indication value and the first table, and the second antenna port group includes one or more second antenna ports.

[0123] Exemplarily, the network device sends first configuration information to the first terminal, where the first configuration information indicates that the DMRS type is type 1 and the maxlength is 1. The DMRS port table corresponding to the DMRS type 1 and the maxlength of 1 in the protocol can be shown in Table 1 below:

[0124] Table 1

[0125]

[0126]

[0127] The network device sends a first DCI to the first terminal, and the second information in the first DCI includes an indication value of 8. The first terminal can determine that the antenna ports with indexes 2 and 3 are the second antenna ports allocated to it by the network device, wherein the antenna ports with indexes 2 and 3 belong to CDM group 1. Alternatively, if the second information in the first DCI includes an indication value of 9, the first terminal can determine that the antenna ports with indexes 0, 1, and 2 are the second antenna ports allocated to it by the network device, wherein the antenna ports with indexes 0 and 1 belong to CDM group 0, and the antenna port with index 2 belongs to CDM group 1.

[0128] Further optionally, the first information is carried in the first DCI, and the number of bits occupied by the first information is related to the DMRS type and maxlength.

[0129] The size in the first information is related to the DMRS type and maxlength. Optionally, the maximum number of the first antenna ports is one of 4, 6, 8, 12, 16, and 24.

[0130] DMRS type 1 (type1) maximum length 1 (maxlength1), the maximum number of first antenna ports is 4, and the number of bits occupied by the first information is at least 2 bits;

[0131] The maximum length of DMRS type 2 (type2) is 2 (maxlength2), the maximum number of first antenna ports is 6, and the number of bits occupied by the first information is at least 3 bits;

[0132] DMRS enhancement type 1 (etype1) maxlength1 or type1 maxlength2, the maximum number of first antenna ports is 8, and the number of bits occupied by the first information is at least 3 bits;

[0133] DMRS enhancement type 2 (etype2) maxlength1 or type2 maxlength2, the maximum number of first antenna ports is 12, and the number of bits occupied by the first information is at least 4 bits;

[0134] DMRS etype1 maxlength2, the maximum number of the first antenna ports is 16, and the number of bits occupied by the first information is at least 4 bits;

[0135] DMRS etype2 maxlength2, the maximum number of the first antenna ports is 24, and the number of bits occupied by the first information is at least 5 bits.

[0136] Further optionally, the first information is carried in the second DCI. That is, the second DCI is used to indicate the first antenna port. Optionally, the second DCI can be a user group common DCI (group common DCI), that is, the format of the second DCI can be DCI format (Format) 2_n, that is, DCI format (Format) 2_6, DCI format (Format) 2_7... and other user group common DCI formats. Among them, the second DCI is not the same DCI as the first DCI indicating the second antenna port described above. The network device can send the second DCI to a group of terminals, and the first information included in the second DCI is valid for the group of terminals. The group of terminals includes a first terminal, and the number of terminals included in the group of terminals is at least one. Based on this implementation method, the first antenna port can be uniformly indicated to a group of terminals.

[0137] In a possible implementation, the first information may indicate the first antenna port in a direct or indirect manner. Specifically, the first information may directly indicate the index of the first antenna port, and the first terminal may directly determine the first antenna port through the first information. The first information may also be indicated indirectly, specifically, the first information may indicate a port that is not assigned to the antenna port of the terminal, that is, after the first terminal receives the first information, it may exclude the second antenna port assigned to itself by the network device and the antenna port not assigned to the terminal indicated by the first information from all antenna ports, and determine that the remaining antenna port is the first antenna port. In this implementation, if the direct indication method is adopted, the calculation of the terminal can be reduced, and the first antenna port can be directly determined. If the indirect indication method is adopted, the network device can send the first information by broadcasting or multicasting, etc., without sending the first information corresponding to each terminal separately. The first terminal can also determine the first antenna port based on the first information and the second antenna port.

[0138] In a possible implementation, the number of first antenna ports is at least one, and the first information indicates some or all of the at least one first antenna port. That is, the network device allocates at least one first antenna port to the second terminal, and the first information may indicate all of the multiple first antenna ports, or, may indicate some of the multiple first antenna ports. It should also be noted that when the number of first antenna ports is one, the first information indicates the one first antenna port. Among them, when the first information indicates all of the at least one first antenna port, it is beneficial for the first terminal to detect interference through all the first antenna ports, which is beneficial to improve the performance of demodulating data. When the first information indicates some of the multiple first antenna ports, the part of the antenna ports may refer to the antenna ports used by the second terminal that has the strongest interference with the first terminal, which can help reduce the signaling overhead.

[0139] In a possible implementation, the first information indicates an index of a first CDM group, and the at least one first antenna port belongs to the first CDM group. When the network device allocates, that is, the network device allocates antenna ports based on the CDM group, the first information can indicate one or more first antenna ports in the CDM group, so that the first terminal can determine that the first CDM group includes the first antenna port, thereby saving signaling overhead. Optionally, all antenna ports or some antenna ports in the first CDM group are first antenna ports.

[0140] Among them, in R15, the type 1 DMRS grouping includes CDM group 0 and CDM group 1, CDM group 0 includes antenna ports indexed as 0, 1, 4, and 5, and CDM group 1 includes antenna ports indexed as 2, 3, 6, and 7.

[0141] In R15, type 2 DMRS grouping includes CDM group 0, CDM group 1 and CDM group 2. CDM group 0 includes antenna ports indexed 0, 1, 6, and 7. CDM group 1 includes antenna ports indexed 2, 3, 8, and 9. CDM group 2 includes antenna ports indexed 4, 5, 10, and 11.

[0142] In R18, type 1 DMRS grouping includes CDM group 0 and CDM group 1. CDM group 0 includes antenna ports indexed as 0, 1, 4, 5, 8, 9, 12, and 13, and CDM group 1 includes antenna ports indexed as 2, 3, 6, 7, 10, 11, 14, and 15.

[0143] In R18, type 2 DMRS grouping includes CDM group 0, CDM group 1 and CDM group 2. CDM group 0 includes antenna ports indexed as 0, 1, 6, 7, 12, 13, 18, and 19. CDM group 1 includes antenna ports indexed as 2, 3, 8, 9, 12, 13, 18, and 19. CDM group 2 includes antenna ports indexed as 4, 5, 10, 11, 16, 17, 22, and 23.

[0144] Exemplarily, taking the above-mentioned R15 type1 DMRS grouping as an example, the first information indicates that the index of the first CDM group is 1, then the first terminal can determine that the antenna ports indexed as 0, 1, 4, and 5 in CDM group 0 include the first antenna port. If it is set that all antenna ports are included in the first CDM group, the first terminal can determine that the antenna ports indexed as 0, 1, 4, and 5 are all first antenna ports. If some antenna ports in the first CDM group are set as the first antenna port, the first terminal can determine that some antenna ports among the antenna ports indexed as 0, 1, 4, and 5 are the first antenna port.

[0145] In a possible implementation manner, the first information indicates a first port index, where the first port index is an index of an antenna port among the multiple first antenna ports.

[0146] Among them, different antenna ports can be distinguished by different indexes (port numbers). For example, for a DMRS port, the index of the DMRS port can be 1000+X, and the value of X can be an integer greater than or equal to 0. 1000+X can also be recorded as X. When the index of a DMRS port can be 1000+X, the DMRS port can be called DMRS port 1000+X, or can also be called DMRS port X. That is to say, in the embodiment of the present application, 1000+X and X can be understood as the index of the same DMRS port.

[0147] Optionally, the first information may indicate the indexes of all or part of the multiple first antenna ports. That is, the first information indicates the indexes of all the first antenna ports in the multiple first antenna ports, or the first information may indicate the indexes of part of the first antenna ports in the multiple first antenna ports. For example, assuming that the indexes of the currently assignable antenna ports are 0, 1, 2, 3, 4, 5, and 6, respectively, the antenna port with index 5 is assigned to the first terminal, and the antenna ports with indexes 0, 1, 2, and 3 are assigned to the second terminal, that is, the antenna ports with indexes 0, 1, 2, and 3 are the first antenna ports. The first information indicates port indexes 0, 1, 2, and 3, that is, the first information indicates the indexes of all the first antenna ports in the multiple first antenna ports. If the first information indicates port indexes 0 and 1, that is, the first information indicates part of the multiple first antenna ports.

[0148] When the first information indicates the indexes of all antenna ports in at least one first antenna port, it is beneficial for the first terminal to detect interference through all first antenna ports, thereby improving the performance of demodulating data. When the first information indicates the indexes of some antenna ports in at least one first antenna port, the some antenna ports may refer to the antenna ports used by the second terminal that has the strongest interference with the first terminal, thereby reducing the signaling overhead.

[0149] Optionally, the at least one first antenna port includes antenna ports in the CDM group where some or all antenna ports corresponding to the first port index are located. That is, the first terminal can determine the CDM group where the antenna port corresponding to the first port index is located based on the first port index, and some or all antenna ports in the CDM group are first antenna ports. Based on this implementation method, it is beneficial to reduce signaling overhead.

[0150] Exemplarily, taking the above-mentioned R18 type1 DMRS grouping as an example, the first information indicates that the first port index is 4, then the first terminal can determine that the antenna port with index 4 belongs to CDM group 0. The multiple first antenna ports all belong to the CDM group 0, and CDM group 0 includes antenna ports with indexes 0, 1, 4, 5, 8, 9, 12, and 13. If some antenna ports in the CDM group 0 are first antenna ports, the first terminal can determine that the at least one antenna port includes some antenna ports in the antenna ports with indexes 0, 1, 4, 5, 8, 9, 12, and 13. If all antenna ports in the CDM group 0 are first antenna ports, the first terminal can determine that at least one antenna port includes antenna ports with indexes 0, 1, 4, 5, 8, 9, 12, and 13.

[0151] Optionally, the first port index is the index of the port with the largest index in at least one first antenna port, and at least one first antenna port includes an antenna port whose port index is less than or equal to the first port index. The first terminal can determine, based on the first port index, that at least one first antenna port includes all or part of the antenna ports that are less than or equal to the first port index. Based on this method, the overhead of the first information can be reduced. For example, assuming that the indexes of the currently assignable antenna ports are 0, 1, 2, 3, 4, 5, and 6, respectively, the network device assigns antenna ports with indexes of 0, 1, 3, and 4 to the second terminal, that is, the antenna ports with indexes of 0, 1, 3, and 4 are all first antenna ports. If the first information indicates that the first port index is 4, the first terminal determines that the antenna port with a port index of 4 is the first antenna port, and the at least one first antenna port includes all or part of the antenna ports with port indexes of 0, 1, 2, and 3.

[0152] However, since the antenna port with index 2 is not assigned to the second terminal, the first terminal may misjudge the antenna port with index 2 as the first antenna port. Therefore, in order to avoid this situation, further optionally, at least one first antenna port includes all antenna ports whose port index is less than or equal to the first port index. In this implementation, the network device can allocate antenna ports in order from small to large. When the first port index is the index of the port with the largest index in at least one first antenna port, the first terminal can determine that the at least one first antenna port includes all antenna ports whose port index is less than or equal to the first port index. Exemplarily, the network device allocates ports in order from small to large, and allocates antenna ports with indexes 0, 1, 2, and 3 to the second terminal, that is, the antenna ports with indexes 0, 1, 2, and 3 are all first antenna ports. The first information indicates that the first port index is 3, then the first terminal can determine that at least one first antenna port includes antenna ports with indexes 0, 1, 2, and 3 according to the first port index.

[0153] Optionally, the first antenna port corresponding to the first port index belongs to the first antenna port group, and at least one first antenna port includes an antenna port in the first antenna port group whose port index is less than or equal to the first port index. It can be understood that the antenna ports can be grouped, and the first port index is the largest port index of at least one first antenna port included in the first antenna segment group. The first terminal can determine that the at least one first antenna port includes all or part of the antenna ports in the first antenna port group that are less than or equal to the first port index according to the first antenna port group described by the first antenna port corresponding to the first port index. Exemplarily, it is assumed that the network device divides the antenna ports with indexes 0, 1, 2, and 3 into antenna port group 1, and divides the antenna ports with indexes 4, 5, 6, and 7 into antenna port group 2. It is assumed that the network device allocates the antenna ports with indexes 0, 2, and 3 to the second terminal, that is, the antenna ports with indexes 0, 2, and 3 are the first antenna ports. The first port index indicated by the first information is the largest port index among 0, 2, and 3, that is, index 3. The first terminal can determine, based on the first information, that the first antenna port group to which the antenna port corresponding to index 3 belongs is antenna port group 1, and can further determine that the antenna port with port index 3 is the first antenna port, and the at least one first antenna port includes all or part of the antenna ports with port indexes 0, 1, and 2.

[0154] However, since the antenna port with index 1 is not assigned to the second terminal, the first terminal may misjudge the antenna port with index 1 as the first antenna port. Therefore, in order to avoid this situation, further optionally, when allocating antenna ports in a group of antenna ports, the network device can allocate antenna ports in order from small to large. In this implementation, at least one first antenna port includes antenna ports whose all port indexes in the first antenna port group are less than or equal to the first port index. When the first information indicates the first port index, the first terminal can determine that the at least one first antenna port includes antenna ports whose all port indexes in the first antenna port group are less than or equal to the first port index. Exemplarily, it is assumed that the network device divides antenna ports with indexes 0, 1, 2, and 3 into antenna port group 1, and divides antenna ports with indexes 4, 5, 6, and 7 into antenna port group 2. The network device allocates antenna ports in order from small to large in one antenna port group, and allocates antenna ports with indexes 0, 1, and 2 to the second terminal, that is, the antenna ports with indexes 0, 1, and 2 are all first antenna ports. If the first port index is 2, the first terminal may determine that the at least one antenna port includes antenna ports with indexes 0, 1, and 2.

[0155] Further optionally, the at least one first antenna port is an antenna port whose port index is less than or equal to the first port index in all the first antenna port groups. That is, the at least one first antenna port belongs to the first antenna port group. Based on this implementation method, all first antenna ports can be determined according to the first port index. Exemplarily, it is assumed that the network device divides the antenna ports with indexes 0, 1, 2, and 3 into antenna port group 1, and divides the antenna ports with indexes 4, 5, 6, and 7 into antenna port group 2. The network device allocates antenna ports in order from small to large in an antenna port group, and allocates antenna ports with indexes 0, 1, and 2 to the second terminal, that is, the antenna ports with indexes 0, 1, and 2 are all first antenna ports. If the first port index is 2, the first terminal can determine that the at least one antenna port is the antenna port with indexes 0, 1, and 2, respectively.

[0156] Further optionally, the first antenna port group is a CDM group.

[0157] Example 1: Using the above-mentioned R15 type1 DMRS grouping, the first information indicates that the first port index is 4, then the first terminal can determine that the antenna port with index 4 belongs to CDM group 0, and the antenna ports less than or equal to index 4 in CDM group 0 also include antenna ports with indexes 0 and 1. Therefore, the first terminal can determine that the at least one first antenna port includes antenna ports with indexes 0, 1, and 4.

[0158] Example 2: Using the above-mentioned R15 type 2 DMRS grouping, the first information indicates that the first port index is 8, then the first terminal can determine that the antenna port with index 8 belongs to CDM group 1, and the antenna ports less than or equal to index 8 in CDM group 1 also include antenna ports with indexes 2 and 3. Therefore, the first terminal can determine that the at least one first antenna port includes antenna ports with indexes 2, 3, and 8.

[0159] It should also be noted that the number of first port indexes indicated in the first information can be one or more, and the number of first antenna ports is multiple. When the number of first port indexes is multiple, the multiple first port indexes can correspond to different antenna port groups respectively.

[0160] Using the above-mentioned R18 type1 DMRS grouping, the first information indicates that the first port index is 4 and 6, then the first terminal can determine that the antenna port with index 4 belongs to CDM group 0, the antenna port with index 6 belongs to CDM group 1, the antenna ports less than or equal to index 4 in CDM group 0 also include antenna ports with index 0 and index 1, and the antenna ports less than or equal to index 6 in CDM group 1 also include antenna ports with index 2 and index 3. Therefore, the first terminal can determine that the multiple first antenna ports include antenna ports with indexes 0, 1, 2, 3, 4, and 6.

[0161] Using the above-mentioned R18 type2 DMRS grouping, the first information indicates that the first port index is 7 and 8, then the first terminal can determine that the antenna port with index 7 belongs to CDM group 0, and the antenna port with index 8 belongs to CDM group 1. In CDM group 0, the antenna ports less than or equal to index 7 also include antenna ports with indexes 1 and 6, and in CDM group 1, the antenna ports less than or equal to index 8 also include antenna ports with indexes 2 and 3. Therefore, the first terminal can determine that the multiple first antenna ports include antenna ports with indexes 1, 2, 3, 6, 7, and 8.

[0162] The above mainly introduces that the first information indicates at least one first antenna port through the index of the first CDM group or the first port index. Based on these two implementation methods and combined with the above-mentioned specific implementation method for the first terminal to determine the second antenna port, two examples of the first terminal determining the first antenna port and the second antenna port are introduced.

[0163] Example 1: The first information indicates the index of the first CDM group, and all antenna ports in the first CDM group are first antenna ports.

[0164] The network device sends the first configuration information to the first terminal indicating that the DMRS type is type1, the maxlength is 1, and the indication value of the second information in the first DCI is 8. The first terminal can determine that the antenna ports with DMRS port indexes 2 and 3 are the second antenna ports allocated to the first PDSCH by the network device through the above Table 1. The first information sent by the network device indicates that the index of the first CDM group is 0, then the first terminal can determine that the antenna ports with indexes 0 and 1 included in CDM group 0 are both second antenna ports.

[0165] In summary, the first terminal may determine that the first antenna port is the antenna port with indexes 0 and 1 in CDM group 0, and the second antenna port is the antenna port with indexes 2 and 3 in CDM group 1.

[0166] Example 2: The first information indicates a first antenna port index, and the at least one first antenna port is an example of an antenna port including a portion of the first antenna port group whose port index is less than or equal to the first port index, and the first antenna port group is a CDM group.

[0167] The network device sends the first configuration information to the first terminal indicating that the DMRS type is type1, the maxlength is 1, and the second information in the first DCI includes an indication value of 9. The first terminal can determine through the above Table 1 that the first terminal can determine that the antenna ports with indexes 0, 1, and 2 are the second antenna ports allocated by the network device to the first PDSCH. The first information sent by the network device indicates that the first port index is 3, and the CDM group corresponding to the antenna port with index 3 is CDM group 1. The antenna ports in CDM group 1 that satisfy the port index less than or equal to the antenna port are the antenna ports with indexes 2 and 3. Since the antenna port with index 2 is the second antenna port, the at least one first antenna port includes some antenna ports in the first antenna port group whose port index is less than or equal to the first port index. Therefore, the first terminal can determine that the antenna port with index 3 in CDM group 1 is the second antenna port.

[0168] In summary, the first terminal can determine that the first antenna port is the antenna port indexed 3 in CDM group 1, and the second antenna port includes the antenna port indexed 2 in CDM group 1 and the antenna ports indexed 0 and 1 in CDM group 0.

[0169] The above is only an example provided in the embodiment of the present application. The first terminal can also determine the first antenna port and the second antenna port in combination with the indication method of the other first information mentioned above, and the embodiment of the present application does not limit this. It should be noted that for other DMRS configuration types and maximum lengths, the specific values ​​of the first antenna port and the second antenna port can also be determined by the above process and method. For different DMRS configurations, the first port and the second port are specifically determined according to the corresponding DMRS index under the specific DMRS configuration type and maximum length. The embodiment of the present application does not limit this.

[0170] 202. The network device sends a physical shared channel of the first terminal to the first terminal. Correspondingly, the first terminal receives the physical shared channel of the first terminal based on the first information.

[0171] In an embodiment of the present application, the network device sends a physical shared channel of the first terminal to the first terminal, specifically, the network device sends a PDSCH to the first terminal, and correspondingly, the first terminal receives the PDSCH of the first terminal based on the first information. The first terminal learns the first antenna port of the second terminal through the first information, and detects the interference signal generated by the second terminal based on the first antenna port. The detection result can be used for data demodulation of the first terminal, thereby improving the demodulation performance of the data.

[0172] In a possible implementation, a network device sends second configuration information to a first terminal, the second configuration information is used to configure a first resource, the physical shared channel transmission resource of the first terminal includes the first resource, the first resource is not used to transmit a signal, or is used to transmit a reference signal, and the first resource is used to measure an interference signal. The first resource can also be understood as a resource not used to transmit a data signal. Optionally, the first resource in the physical shared channel defaults to rate matching. Optionally, the second configuration information is carried in a radio resource control (RRC) signaling.

[0173] The first resource is not used to transmit a signal, which can be understood as the first resource being used to transmit a zero-power signal. That is, the network device sends a zero-power signal on the first resource, and the first terminal does not expect to receive a signal on the first resource, or the first terminal sends a zero-power signal on the first resource, and the network device does not expect to receive the first transmitted signal on the first resource. The first terminal can use the actual signal detected on the first resource as an interference signal and perform data demodulation in combination with the measurement result of the DMRS channel corresponding to the first terminal.

[0174] The first resource is used to transmit a reference signal, that is, the network device or the first terminal sends a reference signal to the opposite end on the first resource. The reference signal is used to measure the interference signal. The first terminal or the network device can perform data demodulation based on the measurement result in combination with the DMRS.

[0175] Optionally, the reference signal may be a first signal, which is a reference signal for measuring interference as defined in the present application. The first signal is encoded with a specific known sequence and transmitted on a first resource, and after receiving the first signal, a channel estimation result obtained by DMRS measurement is subtracted, so that interference information can be determined.

[0176] Optionally, the reference signal may also be an existing known reference signal, which is used to measure interference. For example, the reference signal may be a CSI-RS, which may be specifically divided into a zero power CSI-RS (Zero Power CSI-RS, ZP CSI-RS) or a non-zero power CSI-RS (Non Zero Power CSI-RS, NZP CSI-RS).

[0177] Among them, the network device can configure the first resource for all terminals in the cell where the first terminal is located. At this time, the interference signal detected by the first terminal through the first configured resource is generated when the neighboring cell (Neighbor Cell) signal is transmitted. A neighboring cell refers to a base station that is adjacent to the current service cell, has a physical location association, and transmits signals at the same frequency or a different frequency. Therefore, based on this method, the first terminal can more accurately detect the interference of the neighboring cell, and the first terminal can combine the interference signal obtained by measuring the first resource with the measurement result of the DMRS, which is conducive to more accurate data demodulation.

[0178] Since the channel can produce certain weighting or changes to the signal it experiences, such as changes in amplitude, phase, or frequency, the channel can also be called a channel response, which can be represented by a channel response coefficient. Assume that the DMRS vector sent by the transmitter is s, and the data signal vector sent is x. The DMRS and the data are precoded in the same way (for example, multiplied by the same precoding matrix P). The precoded data signal and DMRS are transmitted simultaneously and experience the same channel. The data signal vector received by the receiver can be expressed as the following formula (1), and the DMRS received by the receiver can be expressed as the following formula (2):

[0179]

[0180]

[0181] Among them, y represents the data signal vector received by the receiving end, r represents the DMRS vector received by the receiving end, H represents the channel actually experienced by the data signal and DMRS, P represents the precoding matrix, and n represents the noise signal vector. represents the equivalent channels experienced by data and DMRS, Represents the interference signal. For the receiving end, the equivalent channel experienced by the data signal It can be measured by DMRS. It can be obtained through the first resource measurement that the first terminal can and The data signal vector x is obtained by demodulation. Therefore, in this implementation, the first terminal may combine the measurement result of the first resource with the measurement result of the DMRS, which is conducive to more accurate data demodulation.

[0182] It should also be noted that the timing at which the network device sends the second configuration information to the first terminal can be before step 202, and the timing can be before step 201 or after step 201, which is not limited in the embodiment of the present application.

[0183] In one possible implementation, after the network device configures the first resource for the first terminal, the first terminal expects to obtain the interference signal of the neighboring cell through the first resource measurement, but in the cell where the first terminal is located, there may be a second terminal that is not configured with the first resource, that is, the second terminal device sends a signal on the same time-frequency resource as the first resource. Optionally, the reason why the network device does not configure the first resource for the second terminal may be that the second terminal does not support the first resource. However, since when the first terminal measures the interference signal through the first resource, the second terminal transmits the signal on the same time-frequency resource as the first resource, the interference signal measured by the first terminal may include the interference signal generated by the second terminal and the interference signal of the neighboring cell, thereby affecting the measurement result of the first terminal on the first resource.

[0184] To solve this problem, in combination with the method corresponding to the above steps 201 and 202, when the second resource with the same time-frequency position as the first resource is used for the second terminal to send a signal, the network device informs the first terminal of the first antenna port used by the second terminal through the first information, and the first terminal can determine the interference signal generated by the second terminal based on the first antenna port used by the second terminal, and subtract the interference signal generated by the second terminal from the measurement result of the first resource to obtain the interference signal of the neighboring area. Based on this method, it is beneficial to improve the accuracy of the first terminal signal detection.

[0185] It should also be noted that the resources described in the present application (e.g., the first resource) may include time domain resources and / or frequency domain resources. For example, the time domain resources of the first resource may include at least one of the following: frame, subframe, time slot, sub-time slot, symbol. The symbol involved in the present application may be an orthogonal frequency-division multiplexing (OFDM) symbol, and OFDM symbols are referred to as symbols below for ease of description. For another example, the frequency domain resources of the first resource may include at least one of the following: resource element (RE), resource block (RB), resource block group (RBG), sub-channel, resource block set, resource pool, carrier, bandwidth part (BWP). A carrier may include a BWP, a BWP may include one or more resource pools, a resource pool may include one or more sub-channels, and a sub-channel may include multiple RBs.

[0186] For the sake of ease of introduction, a first resource corresponding to a symbol and a subcarrier will be taken as an example, that is, a first resource includes one RE. It should be noted that the first resource can also correspond to multiple first symbols and multiple subcarriers, etc., that is, a first resource includes multiple REs. The embodiment of the present application does not limit the size of the first resource.

[0187] In a possible implementation, the number of the first resources is multiple, and the time domain positions of the multiple first resources are different. Among them, the first resource 1 is a first resource other than the last first resource of the multiple first resources, and the interference measurement result of the first resource 1 is used to demodulate the data on the symbol before the symbol where the current first resource 1 is located to the symbol where the next first resource of the first resource 1 is located. The next first resource of the first resource 1 can be understood as the first resource with the closest time interval to the first resource 1 among the first resources whose symbol index is larger than the symbol index corresponding to the first resource. The last first resource among the multiple first resources can be understood as the first resource with the largest corresponding symbol index among the multiple first resources, and the last first resource is used to demodulate the data from the symbol where it is located to the last symbol of the physical shared channel.

[0188] For example, Figure 3 As shown, the horizontal axis is the symbol index, the vertical axis is the subcarrier index, and the upper left corner is the starting symbol 0 and subcarrier 0. Symbol 0 and symbol 1 correspond to the time-frequency resources used to transmit the control signal, symbol 2 corresponds to the time-frequency resources used to transmit the DMRS, and symbols 3 to 11 correspond to the first resource and the time-frequency resources used to transmit the data signal. Figure 3The three first resources in are located at the RE corresponding to symbol 3 and subcarrier 2, the RE corresponding to symbol 6 and subcarrier 2, and the RE corresponding to symbol 9 and subcarrier 2, respectively. Taking the first resource 1 as an example, the next first resource of the first resource 1 is the first resource with the closest time interval to the first resource 1 among the first resources with a larger symbol index than the symbol corresponding to the first resource 1, that is, the first resource 2. The interference measurement result corresponding to the first resource 1 is used to demodulate the data from the symbol where the first resource 1 is located to the symbol before the symbol where the first resource 2 is located, that is, for demodulating the data on symbols 3 to 5. Similarly, the interference measurement result corresponding to the first resource 2 can be used to demodulate the data on symbols 6 to 9. The symbol index corresponding to the first resource 3 is the first resource with the largest index among the three first resources. The interference measurement result of the first resource 3 is used for the data from the symbol where it is located to the last symbol of the physical shared channel, that is, for demodulating the data on symbols 9 to 11.

[0189] It should also be noted that, within a time slot, the interference measurement result of the first resource in the time slot can be demodulated by the data in the time slot symbol, or the data on the first symbol in a time slot can be measured using the measurement interference measurement results of one or more first resources before the first symbol. The embodiments of the present application are not limited to this.

[0190] The time domain position and frequency domain position of the first resource will be introduced below respectively.

[0191] Optionally, the time interval between any two adjacent first resources in the multiple first resources is equal. The time interval between two resources can be understood as the interval between the time domain starting positions of the two resources. Exemplarily, Figure 3 The three first resources are located at the RE corresponding to symbol 3 and subcarrier 2, the RE corresponding to symbol 6 and subcarrier 2, and the RE corresponding to symbol 9 and subcarrier 2. It can be seen that among the three first resources, the time interval between any two adjacent first resources is 3 symbols. The adoption of this method is conducive to making the first resources more evenly distributed on the physical shared channel, so that the size of the demodulated data corresponding to each first resource is equal.

[0192] Optionally, the frequency domain positions of the multiple first resources are the same. Figure 4 As shown, the three first resources are all located on subcarrier 2. By setting the first resources in this way, the complexity of implementation can be reduced. Optionally, the frequency domain positions of the multiple first resources are different, and further optionally, the frequency domain intervals of any two adjacent first resources in the multiple first resources are the same. Exemplarily, Figure 4The three first resources are located at REs corresponding to symbol 3 and subcarrier 2, REs corresponding to symbol 6 and subcarrier 5, and REs corresponding to symbol 9 and subcarrier 8. It can be seen that among the three first resources, the frequency domain interval between any two adjacent first resources is 3 subcarriers. This method is conducive to improving the convenience of sampling the physical shared channel.

[0193] In a possible implementation manner, the network device may indicate the location of the first resource to the first terminal by means of signaling.

[0194] Optionally, the second configuration information sent by the network device is used to configure the ability of the first terminal to perform interference measurement based on the first resource, or to configure the reference signal sent by the first terminal on the first resource, and the specific location of the first resource is determined by DCI. Specifically, the network device sends a third DCI to the first terminal, and correspondingly, the first terminal receives the third DCI from the network device, and the third DCI indicates the location of the first resource. Based on this method, the location of the first resource can be flexibly configured.

[0195] Optionally, the second configuration information sent by the network device indicates a time-frequency position corresponding to the first resource. Based on this implementation, signaling overhead can be reduced.

[0196] In a possible implementation, the location of the first resource is related to one or more of the following parameters: the number of symbols where the physical shared channel is located, the symbol where the DMRS is located, the first identifier, or the modulation and coding scheme (MCS) corresponding to the physical shared channel. The first identifier is related to the cell where the first terminal is located.

[0197] Optionally, the network device determines the location of the first resource based on one or more of the multiple parameters, and then may indicate the location of the first resource by signaling as described above.

[0198] Optionally, the network device may not need to send signaling to indicate the location of the first resource, and the first terminal may determine the location of the first resource based on one or more parameters of the multiple parameters. The multiple parameters include the number of symbols where the physical shared channel is located, the symbol where the DMRS is located, the first identifier, or the MCS corresponding to the physical shared channel.

[0199] The following will introduce the relationship with the first resource based on the four parameters:

[0200] 1. The number of first resources is related to the number of symbols in which the physical shared channel is located.

[0201] Optionally, when the number of symbols in the physical shared channel is less than or equal to a first threshold, the number of first resources is a first value; when the number of symbols in the physical shared channel is greater than or equal to the first threshold, the number of first resources is a second value, the second value is greater than the first value, and the first value and the second value are both positive integers.

[0202] Among them, the number of symbols where the physical shared channel is located can also be called the number of continuous symbols of the physical shared channel, that is, the number of continuous symbols of PUSCH or the number of continuous symbols of PDSCH. The number of continuous symbols of the physical shared channel includes the number of symbols occupied by DMRS and the number of symbols occupied by data. It can be understood that when the number of symbols where the physical shared channel is located is large, more first resources are set accordingly, which can improve the accuracy of interference signal measurement, thereby improving demodulation performance. When the number of symbols where the physical shared channel is located is small, fewer first resources are set accordingly, which can reduce the burden on the equipment. Further optionally, the number of symbols where the physical shared channel is located is positively correlated with the number of first resources, that is, the more symbols where the physical shared channel is located, the more first resources are also, and the fewer symbols where the physical shared channel is located, the fewer first resources are also.

[0203] For example, Figure 5 As shown, Figure 5 The case where the number of symbols of the physical shared channel is 10 and the case where the number of symbols of the physical shared channel is 7 are respectively shown. Among them, when the number of symbols of the physical shared channel is 10, the resources where the physical shared channel is located include 3 first resources, and 1 first resource can be used to demodulate the data corresponding to the 3 symbols. When the number of symbols of the physical shared channel is 7, the resources where the physical shared channel is located include 2 first resources, and 1 first resource can be used to demodulate the data corresponding to the 3 symbols. It can be seen that although the number of first resources of the physical shared channel in the two cases is different, the first resources in the two cases are used to demodulate the data with the same number of symbols. In this way, the first resources in the physical shared channel in different cases can have the same demodulation performance.

[0204] Optionally, the symbol where the first resource is located is before the Mth symbol occupied by the physical shared channel, the number of symbols occupied by the physical shared channel is N, M and N are positive integers, and M is less than or equal to N.

[0205] Among them, combined with the above description about the first resource and the demodulation data, it can be known that the last first resource among multiple first resources can be understood as the first resource with the largest corresponding symbol index among multiple first resources, and the last first resource is used to demodulate the data from the symbol where it is located to the last symbol of the physical shared channel. If the last first resource is located on the last symbol occupied by the physical shared channel, the interference measurement result of the first resource can only be used to demodulate the data on the last symbol occupied by the physical shared channel. At the same time, due to the capacity limitation of the terminal, there is a certain delay during demodulation, and the interference measurement result of the first resource can demodulate less data. Using this method, the symbol where the first resource is located is before the Mth symbol occupied by the physical shared channel, the position of the first resource is optimized, and the performance of the first resource for demodulation is improved.

[0206] For example, Figure 6 As shown, before adjusting the position of the first resource, the resource where the physical shared channel is located includes three first resources, namely, first resource 1, first resource 2 and first resource 3. The three first resources are all located on subcarrier 0, first resource 1 is located on symbol 3, first resource 2 is located on symbol 6, and first resource 3 is located on symbol 9. Combined with the above description of the interference measurement result of the first resource being used to demodulate the data corresponding to the corresponding symbol, it can be known that the interference measurement result of the first resource 1 can be used to demodulate the data corresponding to symbols 3 to 5, the interference measurement result of the first resource 2 can be used to demodulate the data corresponding to symbols 6 to 8, and the interference measurement result of the first resource 3 can only be used to demodulate the data corresponding to symbol 9. The demodulated data of the interference measurement result of the first resource 3 is too small, which reduces the demodulation performance.

[0207] Therefore, by adopting the method described above, the symbol where the first resource is located is set before the 7th symbol of the physical shared channel (the number of continuous symbols of the physical shared channel is 8), and after adjusting the position of the first resource, it can be obtained that the position of the first resource 1 remains unchanged, the first resource 2 is on symbol 5, and the position of the first resource 3 is on symbol 7. At this time, the interference measurement result of the first resource 1 can be used to demodulate the data corresponding to symbols 3 and 4, the interference measurement result of the first resource 2 can be used to demodulate the data corresponding to symbols 5 and 6, and the interference measurement result of the first resource 3 is used to demodulate the data corresponding to symbols 7 to 9. Therefore, using this method to set the time domain resource position of the first resource is conducive to improving the demodulation performance of the terminal.

[0208] Optionally, the time domain position of the first resource can also be determined based on the continuous symbol of the physical shared channel and a method predefined by the protocol. That is, the first field preconfigured by the high layer and the table corresponding to the first field can be used, and the table includes the relationship between the value of the first field, the continuous symbol of the physical shared channel and the time domain position of the first resource. The first terminal can determine the time domain position of the first resource from the table based on the value of the first field and the continuous symbol of the physical shared channel.

[0209] For example, the first resource satisfies the following formulas (3) to (5):

[0210]

[0211]

[0212]

[0213] Where p represents the index of the antenna port, μ represents the subcarrier spacing parameter, Indicates mapping to index (k,l) p,μ The symbol where the first resource corresponding to the antenna port p on the RE is located, is the power scaling factor or power control factor, w t (l′) is the time domain mask sequence element corresponding to the time domain symbol indexed as l′, w f (k′) is the frequency domain mask sequence element corresponding to the subcarrier indexed as k′, m=2n+k′, and Δ is the subcarrier offset factor. is the symbol start index occupied by multiple first resources, l d is the number of continuous symbols of the physical shared channel, which can be determined by RRC signaling and DCI, pos0, pos1, pos2 and pos3 are the values ​​of the second configuration information of the time domain position of different first resources corresponding to the high-level signaling (which can be determined by RRC signaling), and the specific values ​​of pos0, pos1, pos2 and pos3 are Corresponding values, where l0 is the predefined position of the first first resource, and the rest are the positions of other first resources in the multiple first resources. Specifically, the configuration of multiple first resources corresponding to a single symbol can be referred to in Table 2, and the configuration of multiple first resources to a double symbol can be referred to in Table 3.

[0214] Table 2

[0215]

[0216] Table 3

[0217]

[0218] For example, taking Table 1 as an example, assuming that d The value of is 12, l0 is 2, and the high-level signaling indicates pos3. It can be determined that the symbols corresponding to the multiple first resources are 2, 5, 8, and 11 respectively.

[0219] 2. The time domain position of the first resource is related to the symbol where the DMRS is located.

[0220] The DMRS may be a front-loaded DMRS or an additional DMRS. When the network device configures the first resource and the DMRS resource, they may be allocated independently. At this time, the resource configured by the network device for the first resource may conflict with the resource of the DMRS, that is, the symbol where the first resource is located is the same as the symbol where the DMRS is located. In order to avoid the conflict, the time domain position where the first resource is located may be adjusted so that the symbol corresponding to the first resource is different from the symbol corresponding to the second resource.

[0221] Optionally, when the symbol where the first resource is located is the same as the symbol where the DMRS is located, the index of the symbol where the first resource is located is determined to be the index of the symbol where the DMRS is located plus 1. Specifically, the index of the symbol where the first resource is located is M, the index of the symbol where the DMRS is located is N, and the index of the symbol where the first resource is located satisfies M=N+1. Based on this implementation, it is helpful to avoid conflicts between DMRS symbols and the first resource.

[0222] For example, Figure 7 As shown, the network device is configured with two first resources, namely, the first resource 1 and the first resource 2, wherein the time domain position configured by the network device for the first resource 2 is located at symbol 6, which is the same as the symbol where the DMRS is located, and a conflict occurs. The symbol position corresponding to the first resource 2 is adjusted so that its position is located at the next symbol of the symbol where the DMRS is located, and the symbol index corresponding to the first resource 2 is the symbol index where the DMRS is located plus 1, that is, the symbol index corresponding to the first resource 2 is 7. This method is conducive to avoiding the conflict between the first resource and the DMRS.

[0223] Optionally, each of the multiple first resources corresponds to a DMRS, and the index of the symbol where the first resource is located is the index of the symbol where the corresponding DMRS is located plus 1. Using this method, the time domain position of each of the multiple first resources can be determined by the time domain position where the DMRS is located. Specifically, the index of the symbol where the first resource is located is M, the index of the symbol where the DMRS is located is N, and the index of the symbol where the first resource is located satisfies M=N+1. Using this implementation method, conflicts between the first resource and the DMRS can be avoided in advance. At the same time, when the network device schedules the DMRS, the first terminal can directly determine the time domain position of the first resource based on the symbol where the DMRS is located, reducing the signaling overhead.

[0224] 3. The frequency domain position of the first resource is related to the first identifier

[0225] It can be understood that in order to enable the first terminal to measure the interference signal of the neighboring cell, the network device configures the first resource for the terminal in the first cell, and the first cell is the cell where the first terminal is located. Therefore, the terminal configured with the first resource in the first cell will not transmit a signal or a reference signal on the first resource, while the terminals of other cells perform normal data transmission on the same time-frequency resource corresponding to the first resource. In this way, the first terminal can measure the interference of the neighboring cell through the first resource.

[0226] Therefore, in order to enable the terminal of each cell to obtain the resources of the first cell through the first resource measurement, when the network device configures the first resource for different cells, the time-frequency position of the first resource configured for different cells is different, so that when each cell is measured through the first resource, the neighboring cells are performing normal data transmission. This method can be used to perform more effective interference measurement and meet the requirements of multi-cell interference measurement and avoidance.

[0227] Optionally, the frequency domain position of the first resource is related to the first identifier, and the first identifier is related to the cell where the first terminal is located. Further optionally, the first identifier can be a cell identifier (cell ID). Specifically, by configuring the frequency domain positions of the first resources corresponding to different cells to be different, when the terminal performs measurement through the first resource, the neighboring cells are performing normal data transmission, so that the first resource can measure the interference of the neighboring cells.

[0228] For example, Figure 8 As shown, Figure 8The first resource configurations of cell 1, cell 2 and cell 3 are included. The two first resources configured in cell 1 are located on subcarrier 0 and subcarrier 3 respectively, the two first resources configured in cell 2 are located on subcarrier 1 and subcarrier 4 respectively, and the two first resources configured in cell 3 are located on subcarrier 2 and subcarrier 5 respectively. It can be seen that when the terminal in cell 1 detects interference on the first resource, the terminals in cells 2 and 3 are transmitting data, and the same is true for cells 2 and 3. This method can be used to perform more effective interference measurement and meet the requirements of multi-cell interference measurement and avoidance.

[0229] Fourth, the time domain density and / or frequency domain density of the first resource is related to the MCS corresponding to the physical shared channel.

[0230] It can be understood that every F subcarriers in the frequency domain include a first resource, and the frequency domain density of the first resource is Every T symbols in the time domain include a first resource, and the time domain density of the first resource is Optionally, when the MCS corresponding to the physical shared channel of the first terminal is greater than the second threshold, the frequency domain density of the first resource is a third value and / or the time domain density of the first resource is a fourth value; when the MCS corresponding to the physical shared channel of the first terminal is less than or equal to the second threshold, the frequency domain density of the first resource is a fifth value and / or the time domain density of the first resource is a sixth value. Among them, the third value is greater than the fifth value, and the fourth value is greater than the sixth value. The demodulation capability requirement of the physical shared channel corresponding to a higher MCS is higher, and the configuration requires a first resource with a higher density, which is beneficial to improving the demodulation performance of the data. The demodulation capability requirement of the physical shared channel corresponding to a lower MCS is smaller, and the configuration requires a first resource with a smaller density, which is beneficial to reducing the burden on the equipment.

[0231] Further optionally, the network device may configure an MCS threshold (for example, MCS0, MCS1, MCS2, and MCS3) and a table corresponding to the MCS for the first terminal device through high-level signaling, wherein the table includes a relationship between the MCS, the continuous symbol of the physical shared channel, and the time domain position or frequency domain position of the first resource. The first terminal may configure an MCS threshold (for example, MCS0, MCS1, MCS2, and MCS3) and a table corresponding to the MCS for the first terminal device through high-level signaling, wherein the table includes a relationship between the MCS, the continuous symbol of the physical shared channel, and the time domain position or frequency domain position of the first resource. d , determine the time domain position and / or frequency domain position of the first resource. Exemplarily, the following Table 4 shows the time domain position configuration of the first resource, and Table 5 shows the frequency domain position configuration of the first resource.

[0232] Table 4

[0233]

[0234] Table 5

[0235]

[0236] Among them, l N0 is the predefined time domain symbol index of the first resource, f N is the subcarrier index reserved for the first resource. Assume l N0 is 3, f N is 0. The MCS of the physical shared channel corresponding to the first terminal is greater than MCS0 and less than MCS1, and the number of persistent symbols corresponding to the physical shared channel is 8. According to Table 3 and Table 4, it can be obtained as follows Fig. 9 Corresponding to the first resource configuration, the symbol indexes of the first resource are 3 and 7 respectively, and the subcarrier indexes of the first resource are 0 and 7 respectively.

[0237] In a possible implementation, before the first terminal receives the second configuration information for the first cell from the network device, the method further includes: the first terminal sends capability information to the network device, where the capability information is used to indicate support for the first resource. Based on this implementation, the network device can know that the first terminal has the capability to support the first resource, so that the first resource can be configured for the first terminal later.

[0238] In order to implement the functions of the method provided in the above embodiment of the present application, the terminal device and the network device may include a hardware structure and / or a software module, and implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether a function of the above functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.

[0239] See also Fig.10 , Fig.10 A schematic structural diagram of a communication device according to an embodiment of the present application is shown. Fig.10 The communication device shown may be a terminal, or a device in a terminal, or a device that can be used in conjunction with a terminal; or Fig.10 The communication device shown may be a network device, or a device in a network device, or a device that can be used in conjunction with a network device. Fig.10 The communication device shown may include a communication unit 1002 and a processing unit 1001 .

[0240] Specifically, the communication unit 1002 is used to perform the sending or receiving function of the first terminal or network device in the aforementioned method embodiment. The processing unit 1001 is used to perform the data processing function of the first terminal or network device in the aforementioned method embodiment. For other possible implementations of the communication device, please refer to the above Figure 2 The relevant description of the functions of the first terminal or network device in the corresponding method embodiment is not repeated here.

[0241] Fig.11 A structural diagram of another communication device is given. The communication device 1100 may be the first terminal in the above method embodiment, or may be a chip, a chip system, or a processor that supports the first terminal to implement the above method. The communication device may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.

[0242] Alternatively, the communication device 1100 may be a network device in the above method embodiment, or a chip, chip system, or processor that supports the network device to implement the above method. The communication device may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.

[0243] The communication device 1100 may include one or more processors 1101. The processor 1101 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process the communication protocol and communication data, and the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal, a terminal chip, a DU or a CU, etc.), execute a software program, and process the data of the software program.

[0244] Optionally, the communication device 1100 may include one or more memories 1102, on which instructions 1104 may be stored, and the instructions may be executed on the processor 1101, so that the communication device 1100 performs the method described in the above method embodiment. Optionally, data may also be stored in the memory 1102. The processor 1101 and the memory 1102 may be provided separately or integrated together.

[0245] Optionally, the communication device 1100 may further include a transceiver 1105 and an antenna 1106. The transceiver 1105 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., for implementing a transceiver function. The transceiver 1105 may include a receiver and a transmitter, the receiver may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

[0246] The communication device 1100 is a first terminal: the processor 1101 is used to perform the data processing operation of the first terminal in the above method embodiment. The transceiver 1105 is used to perform the data transceiving operation of the first terminal in the above method embodiment.

[0247] Alternatively, the communication device 1100 is a network device: the processor 1101 is used to perform the data processing operation of the network device in the above method embodiment. The transceiver 1105 is used to perform the data transceiving operation of the network device in the above method embodiment.

[0248] In another possible design, the processor 1101 may include a transceiver for implementing the receiving and sending functions. For example, the transceiver may be a transceiver circuit, or an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and sending functions may be separate or integrated. The above-mentioned transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or the above-mentioned transceiver circuit, interface, or interface circuit may be used for transmitting or delivering signals.

[0249] In another possible design, optionally, the processor 1101 may store an instruction 1103, and the instruction 1103 runs on the processor 1101, so that the communication device 1100 can execute the method described in the above method embodiment. The instruction 1103 may be solidified in the processor 1101, in which case the processor 1101 may be implemented by hardware.

[0250] In another possible design, the communication device 1100 may include a circuit that can implement the functions of sending or receiving or communicating in the aforementioned method embodiments. The processor and transceiver described in the embodiments of the present application can be implemented in an integrated circuit (IC), an analog IC, a radio frequency integrated circuit (RFIC), a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc.

[0251] The communication device described in the above embodiments may be a first terminal or a network device, but the scope of the communication device described in the embodiments of the present application is not limited thereto, and the structure of the communication device may not be limited thereto. Fig.11 The communication device may be an independent device or may be part of a larger device. For example, the communication device may be:

[0252] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0253] (2) having a set of one or more ICs, and optionally, the IC set may also include a storage component for storing data and instructions;

[0254] (3) ASIC, such as modem (Mobile Station Modem, MSM);

[0255] (4) Modules that can be embedded in other devices;

[0256] (5) Receivers, terminals, smart terminals, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

[0257] (6)Others

[0258] For the case where the communication device may be a chip or a chip system, see Fig.12 Schematic diagram of the chip structure shown. Fig.12 The chip shown includes a processor 1201 and an interface 1202. Optionally, it may also include a memory 1203. The number of the processor 1201 may be one or more, and the number of the interface 1202 may be multiple.

[0259] In one design, for a case where the chip is used to implement the function of the first terminal in an embodiment of the present application:

[0260] The interface 1202 is used to input or output signals;

[0261] The processor 1201 is configured to execute the data processing operation of the first terminal in the above method embodiment.

[0262] In another design, for the case where the chip is used to implement the function of the network device in the embodiment of the present application:

[0263] The interface 1202 is used to input or output signals;

[0264] The processor 1201 is used to execute the data processing operation of the network device in the above method embodiment.

[0265] It is understandable that some optional features in the embodiments of the present application may be implemented independently in certain scenarios without relying on other features, such as the solution on which they are currently based, to solve corresponding technical problems and achieve corresponding effects, or may be combined with other features according to needs in certain scenarios. Accordingly, the communication device provided in the embodiments of the present application may also implement these features or functions accordingly, which will not be described in detail here.

[0266] It should be understood that the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by an integrated logic circuit of hardware in the processor or an instruction in the form of software. The above processor can be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an ASIC, a field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

[0267] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM (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.

[0268] The present application also provides a computer-readable medium for storing computer software instructions, which, when executed by a communication device, implement the functions of any of the above method embodiments.

[0269] The present application also provides a computer program product for storing computer software instructions, which, when executed by a communication device, implement the functions of any of the above method embodiments.

[0270] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state drive (SSD)).

[0271] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

Claims

1. A communication method, characterized in that: Applied to a first terminal, the method includes: receiving first information, where the first information is used to indicate a first antenna port, where the first antenna port is an antenna port associated with a physical shared channel transmission of a second terminal; A physical shared channel of the first terminal is received based on the first information.

2. The method according to claim 1, characterized in that The time-frequency resources of the physical shared channel corresponding to the first terminal and the time-frequency resources of the physical shared channel corresponding to the second terminal are partially or completely the same.

3. The method according to claim 1 or 2, characterized in that: The first antenna port and the second antenna port are orthogonal ports, and the second antenna port is an antenna port associated with a physical shared channel of the first terminal.

4. The method according to claim 3, characterized in that The second antenna port corresponds one-to-one to an antenna port of a physical shared channel of the first terminal.

5. The method according to claim 3 or 4, characterized in that: The method further comprises: Receiving first configuration information from a network device, wherein the first configuration information includes a type and a maximum length of a demodulation reference signal DMRS; Receive first downlink control information DCI from the network device, where the first DCI includes second information, and the second information indicates the second antenna port.

6. The method according to claim 5, characterized in that The first information is carried in the first DCI, and the number of bits occupied by the first information is related to the type and maximum length of the DMRS.

7. The method according to any one of claims 1 to 5, characterized in that: The first information is carried in the second DCI.

8. The method according to any one of claims 1 to 7, characterized in that: The number of the first antenna ports is at least one, and the first information indicates part or all of the at least one first antenna port.

9. The method according to claim 8, characterized in that The maximum number of the first antenna ports is one of 4, 6, 8, 12, 16, and 24.

10. The method according to any one of claims 1 to 9, characterized in that: The first information indicates an index of a first code division multiplexing (CDM) group, and the first antenna port belongs to the first CDM group.

11. The method according to claim 8 or 9, characterized in that: The first information indicates a first port index, where the first port index is an index of an antenna port in the at least one first antenna port.

12. The method according to claim 11, characterized in that The at least one first antenna port includes antenna ports in the CDM group where antenna ports corresponding to some or all first port indexes are located.

13. The method according to any one of claims 11 or 12, characterized in that The first port index is the index of the antenna port with the largest index among the at least one first antenna port, and the at least one first antenna port includes antenna ports whose port index is less than or equal to the first port index.

14. The method according to any one of claims 11 to 13, characterized in that: The at least one first antenna port includes all antenna ports whose port indexes are less than or equal to the first port index.

15. The method according to any one of claims 11 to 14, characterized in that: The first antenna port corresponding to the first port index belongs to a first antenna port group, and the at least one first antenna port includes an antenna port in the first antenna port group whose port index is less than or equal to the first port index.

16. The method according to claim 15, characterized in that The first antenna ports include antenna ports whose port indexes are less than or equal to the first port index in all the first antenna port groups.

17. The method according to claim 16, characterized in that The at least one first antenna port is an antenna port whose port index is less than or equal to the first port index in all the first antenna port groups.

18. The method according to any one of claims 15 to 17, characterized in that: The first antenna port group is a CDM group.

19. The method according to any one of claims 1 to 18, characterized in that: The method comprises: Receive second configuration information from a network device, where the second configuration information is used to configure a first resource, where the transmission resources of the physical shared channel include the first resource, where the first resource is not used to transmit a signal or is used to transmit a reference signal, and where the first resource is used to measure an interference signal.

20. The method according to claim 19, characterized in that The second resource with the same time and frequency position as the first resource is used for the second terminal to send a signal.

21. The method according to claim 19 or 20, characterized in that Before transmitting a physical shared channel based on the first information, the method further includes: A third DCI is received from a network device, where the third DCI indicates a location of the first resource.

22. The method according to any one of claims 19 to 21, characterized in that: The second configuration information indicates a location of the first resource.

23. The method according to any one of claims 19 to 22, characterized in that: There are multiple first resources, and the time domain positions of any two of the multiple first resources are different.

24. The method according to claim 23, characterized in that The time intervals between any two adjacent first resources among the multiple first resources are equal.

25. The method according to claim 23 or 24, characterized in that When the number of symbols of the physical shared channel is less than or equal to the first threshold, the number of symbols corresponding to the multiple first resources is a first value; When the number of symbols of the physical shared channel is greater than or equal to the first threshold, the number of symbols corresponding to the multiple first resources is a second value, the second value is greater than the first value, and the first value and the second value are both positive integers.

26. The method according to any one of claims 23 to 25, characterized in that: The method further comprises: When the symbol where the first resource is located is the same as the symbol where the DMRS is located, the index of the symbol where the first resource is located is determined to be the index of the symbol where the DMRS is located plus 1.

27. The method according to any one of claims 23 to 26, characterized in that: Each of the multiple first resources corresponds to a DMRS, and the index of the symbol where the first resource is located is the index of the symbol where the corresponding DMRS is located plus 1.

28. The method according to any one of claims 23 to 27, characterized in that: The symbol of the first resource is before the Mth symbol occupied by the physical shared channel, the number of symbols occupied by the physical shared channel is N, the M and the N are positive integers, and the M is less than or equal to the N.

29. The method according to any one of claims 23 to 28, characterized in that: Frequency domain positions of two first resources among the multiple first resources are the same or different.

30. The method according to claim 29, characterized in that The frequency domain positions of any two first resources among the multiple first resources are different, and the frequency domain intervals of any two adjacent first resources among the multiple first resources are the same.

31. The method according to claim 29 or 30, characterized in that The frequency domain position of the first resource is related to a first identifier, and the first identifier is related to a cell where the first terminal is located.

32. The method according to any one of claims 23 to 31, characterized in that The time domain density and / or frequency domain density of the first resource is related to a modulation and coding scheme MCS corresponding to the physical shared channel.

33. The method according to any one of claims 19 to 32, characterized in that: Before receiving the second configuration information from the network device, the method further includes: Capability information is sent to the network device, where the capability information is used to indicate support for the first resource.

34. The method according to any one of claims 19 to 33, characterized in that The second configuration information is carried in radio resource control RRC signaling.

35. A communication method, characterized in that: Applied to a network device, the method further comprises: First information is sent to a first terminal, where the first information is used to indicate a first antenna port, where the first antenna port is an antenna port associated with a physical shared channel transmission of a second terminal.

36. The method according to claim 35, characterized in that The time-frequency resources of the physical shared channel corresponding to the first terminal and the time-frequency resources of the physical shared channel corresponding to the second terminal are partially or completely the same.

37. The method according to claim 35 or 36, characterized in that The first antenna port and the second antenna port are orthogonal ports, and the second antenna port is an antenna port associated with a physical shared channel of the first terminal.

38. The method according to claim 37, characterized in that The second antenna port corresponds one-to-one to an antenna port of a physical shared channel of the first terminal.

39. The method according to claim 37 or 38, characterized in that The method further comprises: Sending first configuration information to the first terminal, where the first configuration information includes a type and a maximum length of a demodulation reference signal DMRS; First downlink control information DCI is sent to the first terminal, where the first DCI includes second information, and the second information indicates the second antenna port.

40. The method according to claim 39, characterized in that The first information is carried in the first DCI, and the number of bits occupied by the first information is related to the type and maximum length of the DMRS.

41. The method according to any one of claims 35 to 39, characterized in that: The first information is carried in the second DCI.

42. The method according to any one of claims 35 to 41, characterized in that The number of the first antenna ports is at least one, and the first information indicates part or all of the at least one first antenna port.

43. The method according to claim 42, characterized in that The maximum number of the first antenna ports is one of 4, 6, 8, 12, 16, and 24.

44. The method according to any one of claims 35 to 43, characterized in that The first information indicates an index of a first code division multiplexing (CDM) group, and the first antenna port belongs to the first CDM group.

45. The method according to any one of claims 42 to 44, characterized in that The first information indicates a first port index, where the first port index is an index of an antenna port in the at least one first antenna port.

46. ​​The method according to claim 45, characterized in that The at least one first antenna port includes antenna ports in the CDM group where antenna ports corresponding to some or all first port indexes are located.

47. The method according to any one of claims 45 or 46, characterized in that The first port index is the index of the antenna port with the largest index among the at least one first antenna port, and the at least one first antenna port includes antenna ports whose port index is less than or equal to the first port index.

48. The method according to any one of claims 45 to 47, characterized in that The at least one first antenna port includes all antenna ports whose port indexes are less than or equal to the first port index.

49. The method according to any one of claims 42 to 45, characterized in that The first antenna port corresponding to the first port index belongs to a first antenna port group, and the at least one first antenna port includes an antenna port in the first antenna port group whose port index is less than or equal to the first port index.

50. The method according to claim 49, characterized in that The first antenna ports include antenna ports whose port indexes are less than or equal to the first port index in all the first antenna port groups.

51. The method according to claim 50, characterized in that The at least one first antenna port is an antenna port whose port index is less than or equal to the first port index in all the first antenna port groups.

52. The method according to any one of claims 49 to 41, characterized in that The first antenna port group is a CDM group.

53. The method according to any one of claims 35 to 52, characterized in that The method further comprises: Send second configuration information to the first terminal, where the second configuration information is used to configure a first resource, the transmission resources of the physical shared channel include the first resource, the first resource is not used to transmit a signal or is used to transmit a reference signal, and the first resource is used to measure an interference signal.

54. The method according to claim 53, characterized in that The second resource with the same time and frequency position as the first resource is used for the second terminal to send a signal.

55. The method according to claim 53 or 54, characterized in that Before transmitting a physical shared channel based on the first information, the method further includes: A third DCI is sent to the first terminal, where the third DCI indicates a location of the first resource.

56. The method according to any one of claims 53 to 55, characterized in that The second configuration information indicates a location of the first resource.

57. The method according to any one of claims 53 to 56, characterized in that There are multiple first resources, and the time domain positions of any two of the multiple first resources are different.

58. The method according to claim 57, characterized in that The time intervals between any two adjacent first resources among the multiple first resources are equal.

59. The method according to claim 57 or 58, characterized in that When the number of symbols of the physical shared channel is less than or equal to the first threshold, the number of symbols corresponding to the multiple first resources is a first value; When the number of symbols of the physical shared channel is greater than or equal to the first threshold, the number of symbols corresponding to the multiple first resources is a second value, the second value is greater than the first value, and the first value and the second value are both positive integers.

60. The method according to any one of claims 57 to 59, characterized in that The method further comprises: When the symbol where the first resource is located is the same as the symbol where the DMRS is located, the index of the symbol where the first resource is located is determined to be the index of the symbol where the DMRS is located plus 1.

61. The method according to any one of claims 57 to 60, characterized in that Each of the multiple first resources corresponds to a DMRS, and the index of the symbol where the first resource is located is the index of the symbol where the corresponding DMRS is located plus 1.

62. The method according to any one of claims 57 to 61, characterized in that The symbol of the first resource is before the Mth symbol occupied by the physical shared channel, the number of symbols occupied by the physical shared channel is N, the M and the N are positive integers, and the M is less than or equal to the N.

63. The method according to any one of claims 57 to 62, characterized in that Frequency domain positions of two first resources among the multiple first resources are the same or different.

64. The method according to claim 63, characterized in that The frequency domain positions of any two first resources among the multiple first resources are different, and the frequency domain intervals of any two adjacent first resources among the multiple first resources are the same.

65. The method according to claim 63 or 64, characterized in that The frequency domain position of the first resource is related to a first identifier, and the first identifier is related to a cell where the first terminal is located.

66. The method according to any one of claims 57 to 65, characterized in that The time domain density and / or frequency domain density of the first resource is related to a modulation and coding scheme MCS corresponding to the physical shared channel.

67. The method according to any one of claims 53 to 66, characterized in that Before the second configuration information is sent to the first terminal, the method further includes: Capability information is received from the first terminal, where the capability information is used to indicate support for the first resource.

68. The method according to any one of claims 53 to 67, characterized in that The second configuration information is carried in radio resource control RRC signaling.

69. A communication device, characterized in that: The communication device includes a module or unit for executing the method according to any one of claims 1 to 34, or the communication device includes a module or unit for executing the method according to any one of claims 35 to 68.

70. A communication device, characterized in that: The method comprises a processor coupled to a memory, wherein the processor is configured to execute a computer program or instruction stored in the memory to implement the method according to any one of claims 1 to 34 or the method according to any one of claims 35 to 68.

71. The device according to claim 70, characterized in that The device further includes the memory and / or a transceiver, wherein the transceiver is used for transmitting and receiving data and / or signaling.

72. A communication device, characterized in that: It includes a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device, and the processor causes the method as described in any one of claims 1 to 34 to be executed through a logic circuit or an execution instruction, or the processor causes the method as described in any one of claims 35 to 68 to be executed through a logic circuit or an execution instruction.

73. A computer-readable storage medium, characterized in that The storage medium stores a computer program or instruction. When the computer program or instruction is executed by the communication device, the method according to any one of claims 1 to 34 is executed, or the method according to any one of claims 35 to 68 is executed.

74. A communication system, characterized in that: The communication system includes a first device and a second device, the first device is used to execute the method as described in any one of claims 1 to 34, and the second device is used to execute the method as described in any one of claims 35 to 68.

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