Communication method and communication apparatus

Abstract

Provided in the present application are a communication method and a communication apparatus, relating to the technical field of communications. The method is applied to a terminal device, and comprises: receiving first information, the first information being used for determining a delay on a first transmission path corresponding to a first antenna port, the first transmission path passing through a first scatterer, the first antenna port being one of N antenna ports of a network device, and N being a positive integer; measuring reference signals of some antenna ports among the N antenna ports, and determining channel measurement results of said antenna ports measured; and, on the basis of the first information and the channel measurement results of said antenna ports measured, determining channel measurement results of the N antenna ports. The method in the embodiments of the present application can reduce the complexity and power consumption of reference signal measurement on a terminal device side.

Description

Communication method and communication apparatus

[0001] The present application claims priority from the Chinese patent application No. 202411381492.3 filed with the State Intellectual Property Office of China on September 29, 2024 and entitled "Communication method and communication apparatus", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, in particular to a communication method and a communication apparatus. BACKGROUND

[0003] With the development of communication technology, a super large dimension antenna array is introduced in some communication systems, for example, the number of antenna ports used for sending by an access network device can reach 128 / 256 (128 / 256T) or even more.

[0004] However, the super large dimension antenna array will affect channel state information (CSI) measurement. For example, currently, CSI measurement needs a terminal device to measure channel state information reference signals (CSI-RS) sent by all antenna ports, and the super large dimension antenna array will greatly increase the number of CSI-RS antenna ports measured by the terminal device, thereby increasing the complexity of CSI measurement on the terminal device side, and also increasing the power consumption of the terminal device for measuring CSI-RS. SUMMARY

[0005] The present application provides a communication method and a communication apparatus, which can reduce the complexity and power consumption of reference signal measurement on the terminal device side.

[0006] In a first aspect, a communication method is provided, the method is applied to a terminal device or a component (such as a processor, a chip, a chip system, a circuit or a functional module, etc.) in the terminal device, and the method comprises:

[0007] receiving first information, the first information being used to determine a time delay on a first transmission path corresponding to a first antenna port, the first transmission path passing through a first scatterer, the first antenna port being one of N antenna ports of a network device, N being a positive integer; measuring a reference signal of part of the N antenna ports, determining a channel measurement result of the part of the N antenna ports; and determining a channel measurement result of the N antenna ports according to the first information and the channel measurement result of the part of the N antenna ports.

[0008] In the embodiments of the present application, the terminal device only needs to measure the reference signals of part of the antenna ports, and can determine the channel measurement results of the N antenna ports according to the first information and the channel measurement results of the part of the antenna ports, so as to reduce the complexity and power consumption of the reference signal measurement at the terminal device side.

[0009] Meanwhile, the first information is used to determine the time delay on the first transmission path through the first scatterer, and the terminal device can accurately determine the phase difference between adjacent antenna ports according to the first information, so as to eliminate the phase ambiguity problem caused by the grating lobe, thereby improving the accuracy of the reference signal measurement while reducing the complexity and power consumption of the reference signal measurement at the terminal device side.

[0010] In some possible implementation manners, the first information is used to indicate one or more of the following: the position of the first scatterer, the time delay on the first transmission path corresponding to the first antenna port, and the time delay corresponding to the first angle of the first antenna port; wherein the first angle includes the departure angle and / or the arrival angle corresponding to the first transmission path.

[0011] In the embodiments of the present application, the first information is used to indicate one or more of the above, so that the terminal device can conveniently determine the phase difference between adjacent antenna ports according to the first information.

[0012] In some possible implementation manners, the method further includes: sending second information, wherein the second information is used to indicate the number of antenna ports supported by the terminal device for measurement.

[0013] In the embodiments of the present application, the terminal device sends the second information, which helps the network device to configure (such as configuring the reference signal resource) or send the first information (such as sending the first information to the terminal device in the case that the terminal device does not support measurement of the N antenna ports) according to the number of antenna ports supported by the terminal device for measurement.

[0014] In some possible implementation manners, the method further includes: receiving third information, wherein the third information is used to indicate M reference signal resources corresponding to the N antenna ports, and M is a positive integer.

[0015] In the embodiments of the present application, the terminal device receives the third information, which helps the terminal device to determine the M reference signal resources corresponding to the N antenna ports according to the third information.

[0016] In some possible implementation manners, in the case that M is greater than 1, the method further includes: receiving indication information used to indicate the mapping manner of the antenna ports of the M reference signal resources and the N antenna ports.

[0017] In the embodiments of the present application, the terminal device receives the indication information, which helps the terminal device to determine the mapping manner of the antenna ports of the M reference signal resources and the N antenna ports according to the indication information.

[0018] In some possible implementation manners, the mapping manner is any one of the following: the antenna ports of each of the M reference signal resources are sequentially mapped onto the N antenna ports in a manner of first vertical direction and then horizontal direction, and the antenna ports of the same reference signal resource are distributed in the same antenna port block; the antenna ports of each of the M reference signal resources are sequentially mapped onto the N antenna ports in a manner of first horizontal direction and then vertical direction, and the antenna ports of the same reference signal resource are distributed in the same antenna port block; the antenna ports of each of the M reference signal resources are sequentially mapped onto the antenna ports in a manner of first vertical direction M2 antenna ports of the reference signal resources and then horizontal direction M1 antenna ports of the reference signal resources are cross-mapped; the antenna ports of each of the M reference signal resources are sequentially mapped onto the antenna ports in a manner of first vertical direction M2 antenna ports of the reference signal resources are cross-mapped and then horizontal direction M1 antenna ports of the reference signal resources are cross-mapped; wherein M1 and M2 are positive integers.

[0019] In the embodiments of the present application, the mapping manner of the antenna ports of the M reference signal resources and the N antenna ports is any one of the above, which can improve the flexibility of reference signal resource configuration.

[0020] In some possible implementation manners, the third information includes the indication information used for indicating the mapping manner.

[0021] In the embodiments of the present application, the third information includes the indication information used for indicating the mapping manner, so that the indication information does not need to be transmitted through additional resources, thereby saving resource consumption and improving the resource utilization rate of the communication system.

[0022] In some possible implementation manners, the method further includes: receiving fourth information, the fourth information being used for indicating reference signal resources of the M reference signal resources used for measuring the part of the antenna ports; and wherein the measuring the reference signals of the part of the antenna ports includes measuring the reference signals of the part of the antenna ports according to the fourth information.

[0023] In the embodiments of the present application, the terminal device receives the fourth information, the fourth information being used for indicating reference signal resources of the M reference signal resources used for measuring the part of the antenna ports, which helps the terminal device to measure the reference signals of the specified antenna ports (such as the part of the antenna ports) according to the indication (i.e. the fourth information) of the network device.

[0024] In some possible implementation manners, the method further includes: sending fifth information, where the fifth information is used to indicate the channel measurement result of the N antenna ports.

[0025] In the embodiments of the present application, the terminal device sends the fifth information, which helps the network device to know the channel measurement result of the N antenna ports.

[0026] In a second aspect, a communication method is provided, which is applied to a network device or a component (for example, a processor, a chip, a chip system, a circuit, or a functional module, etc.) in the network device, and includes:

[0027] sending first information, where the first information is used to determine a time delay on a first transmission path corresponding to a first antenna port, the first transmission path passes through a first scatterer, the first antenna port is one of N antenna ports of the network device, and N is a positive integer; and sending a reference signal of the N antenna ports.

[0028] In the embodiments of the present application, the network device sends the first information, which helps the terminal device to measure the reference signal of part of the antenna ports and to determine the channel measurement result of the N antenna ports according to the first information and the channel measurement result of the part of the antenna ports, thereby helping to reduce the complexity and power consumption of the reference signal measurement at the terminal device side.

[0029] Meanwhile, the first information is used to determine the time delay on the first transmission path passing through the first scatterer, which helps the terminal device to accurately determine the phase difference between adjacent antenna ports according to the first information, and to eliminate the phase ambiguity problem caused by the grating lobe, thereby helping to improve the accuracy of the reference signal measurement while reducing the complexity and power consumption of the reference signal measurement at the terminal device side.

[0030] In some possible implementation manners, the first information is used to indicate one or more of the following: a position of the first scatterer, a time delay on the first transmission path corresponding to the first antenna port, and a time delay corresponding to a first angle of the first antenna port; where the first angle includes a departure angle and / or an arrival angle corresponding to the first transmission path.

[0031] In the embodiments of the present application, the first information is used to indicate one or more of the above, which helps the terminal device to conveniently determine the phase difference between adjacent antenna ports according to the first information.

[0032] In some possible implementation manners, the method further includes: receiving second information, where the second information is used to indicate a number of antenna ports supported by the terminal device for measurement.

[0033] In the embodiments of the present application, the network device receives the second information, which helps the network device to configure (such as configuring a reference signal resource) or send the first information (such as sending the first information to the terminal device in the case that the terminal device does not support measuring N antenna ports) according to the number of antenna ports supported by the terminal device for measurement.

[0034] In some possible implementation manners, the method further includes: sending third information, the third information being used for indicating M reference signal resources corresponding to the N antenna ports, M being a positive integer; and wherein the sending the reference signals of the N antenna ports includes: sending the reference signals of the N antenna ports through the M reference signal resources.

[0035] In the embodiments of the present application, the network device sends the third information, which helps the terminal device to determine M reference signal resources corresponding to the N antenna ports according to the third information.

[0036] In some possible implementation manners, in the case that M is greater than 1, the method further includes: sending indication information used for indicating a mapping manner of antenna ports of the M reference signal resources and the N antenna ports; and wherein the sending the reference signals of the N antenna ports includes: sending the reference signals of the N antenna ports according to the mapping manner.

[0037] In the embodiments of the present application, the network device sends the indication information, which helps the terminal device to determine the mapping manner of the antenna ports of the M reference signal resources and the N antenna ports according to the indication information.

[0038] In some possible implementation manners, the mapping manner is any one of the following: antenna ports of each of the M reference signal resources are sequentially mapped onto the N antenna ports in the manner of first vertical direction and then horizontal direction, and the antenna ports of the same reference signal resource are distributed in the same antenna port block; antenna ports of each of the M reference signal resources are sequentially mapped onto the N antenna ports in the manner of first horizontal direction and then vertical direction, and the antenna ports of the same reference signal resource are distributed in the same antenna port block; antenna ports of each of the M reference signal resources are mapped onto the antenna ports in the manner of first vertical direction M2 reference signal resources of antenna ports sequential mapping, and then horizontal direction M1 reference signal resources of antenna ports cross mapping; antenna ports of each of the M reference signal resources are mapped onto the antenna ports in the manner of first vertical direction M2 reference signal resources of antenna ports cross mapping, and then horizontal direction M1 reference signal resources of antenna ports cross mapping; wherein M1 and M2 are positive integers.

[0039] In the embodiments of the present application, the mapping manner of the antenna ports of the M reference signal resources and the N antenna ports is any one of the above, so that the flexibility of the reference signal resource configuration can be improved.

[0040] In some possible implementation manners, the third information includes indication information used for indicating the mapping manner.

[0041] In the embodiments of the present application, the third information includes indication information used for indicating the mapping manner, so that the indication information does not need to be transmitted through additional resources, thereby saving resource consumption and improving the resource utilization of the communication system.

[0042] In some possible implementation manners, the method further includes: transmitting fourth information, the fourth information being used for indicating reference signal resources of the M reference signal resources used for measuring the part of the antenna ports.

[0043] In the embodiments of the present application, the network device transmits fourth information, the fourth information being used for indicating reference signal resources of the M reference signal resources used for measuring the part of the antenna ports, so that the terminal device can measure the reference signal of the specified antenna port (for example, the part of the antenna ports) according to the indication (that is, the fourth information) of the network device.

[0044] In some possible implementation manners, the method further includes: receiving fifth information, the fifth information being used for indicating channel measurement results of the N antenna ports.

[0045] In the embodiments of the present application, the fifth information is used for indicating channel measurement results of the N antenna ports, and the network device receives the fifth information, so that the channel measurement results of the N antenna ports can be obtained.

[0046] In some possible implementation manners, the network device is an access network device, a distributed unit, or a centralized unit.

[0047] In a third aspect, a communication apparatus is provided, which can be used in the terminal device of the first aspect, and can be the terminal device, a device (for example, a chip, or a chip system, or a circuit, or a processor) in the terminal device, or a device capable of being used with the terminal device, and can also be a logic module or software capable of implementing all or part of the terminal device.

[0048] The communication apparatus includes a module corresponding to each of the methods / operations / steps / actions described in the first aspect or any possible implementation manner of the first aspect, which can be a hardware circuit, a software, or a combination of hardware circuit and software.

[0049] In a fourth aspect, a communication apparatus is provided, which can be used in the network device of the second aspect, can be the network device, can be a device (for example, a chip, or a chip system, or a circuit, or a processor) in the network device, or can be a device capable of being used with the network device, or can be a logic module or software capable of implementing all or part of the network device.

[0050] The communication apparatus includes a module corresponding to each of the methods / operations / steps / actions described in the second aspect or any possible implementation manner of the second aspect, which can be a hardware circuit, can be software, or can be a combination of hardware circuit and software.

[0051] In a fifth aspect, a communication apparatus is provided, which includes a processor and a memory, the processor is coupled to the memory, and the memory is used to store a computer program (which can also be referred to as code or instruction), the computer program is executed by the processor to make the apparatus perform the method in the first aspect or any possible implementation manner of the first aspect.

[0052] In some possible implementation manners, the apparatus further includes a memory coupled to the processor.

[0053] In some possible implementation manners, the processor is one or more, and / or the memory is one or more.

[0054] In some possible implementation manners, the memory can be integrated with the processor, or the memory is separately arranged from the processor.

[0055] In a sixth aspect, a communication apparatus is provided, which includes a processor and a memory, the processor is coupled to the memory, and the memory is used to store a computer program (which can also be referred to as code or instruction), the computer program is executed by the processor to make the apparatus perform the method in the second aspect or any possible implementation manner of the second aspect.

[0056] In some possible implementation manners, the apparatus further includes a memory coupled to the processor.

[0057] In some possible implementation manners, the processor is one or more, and / or the memory is one or more.

[0058] In some possible implementation manners, the memory can be integrated with the processor, or the memory is separately arranged from the processor.

[0059] In a seventh aspect, a computer-readable storage medium is provided, and the computer-readable storage medium has stored thereon a computer program (which can also be referred to as code or instructions) that, when executed on a computer, causes the computer to perform the method in any one of the aspects or any possible implementation of any one of the aspects.

[0060] In an eighth aspect, a computer program product is provided, and the computer program product includes a computer program (which can also be referred to as code or instructions) that, when executed on a computer, causes the computer to perform the method in any one of the aspects or any possible implementation of any one of the aspects.

[0061] In a ninth aspect, a chip is provided, and the chip includes a processor and a memory. The memory is configured to store a computer program (which can also be referred to as code or instructions). The processor is configured to invoke and run the computer program stored in the memory, so that a device or equipment installed with the chip performs the method in any one of the aspects or any possible implementation of any one of the aspects.

[0062] In a tenth aspect, a communication system is provided, and the communication system includes a communication device (such as a terminal device) configured to perform the method in the first aspect and / or a communication device (such as a network device) configured to perform the method in the second aspect. BRIEF DESCRIPTION OF DRAWINGS

[0063] FIG. 1 is a schematic block diagram of a wireless communication system suitable for use in the present application.

[0064] FIG. 2 is a schematic architecture diagram of a possible cognitive network in an embodiment of the present application.

[0065] FIG. 3 is a schematic architecture diagram of another possible cognitive network in an embodiment of the present application.

[0066] FIG. 4 is a schematic architecture diagram of an O-RAN system in an embodiment of the present application.

[0067] FIG. 5 is a schematic architecture diagram of an RAN chip system in an embodiment of the present application.

[0068] FIG. 6 is a schematic diagram of a large-dimension antenna port measurement in an embodiment of the present application.

[0069] FIG. 7 is a schematic diagram of a phase difference on different antenna ports in an embodiment of the present application.

[0070] FIG. 8 is a schematic flowchart of a communication method provided by an embodiment of the present application.

[0071] FIG. 9 is a schematic diagram of measuring a partial antenna port in an embodiment of the present application.

[0072] FIG. 10 is a schematic diagram of mapping of M reference signal resources to N antenna ports in one embodiment of the present application.

[0073] FIG. 11 is a schematic diagram of distribution of antenna port blocks in an antenna panel in one embodiment of the present application.

[0074] FIG. 12 is a schematic diagram of mapping of M reference signal resources to N antenna ports in another embodiment of the present application.

[0075] FIG. 13 is a schematic diagram of mapping of M reference signal resources to N antenna ports in yet another embodiment of the present application.

[0076] FIG. 14 is a schematic diagram of mapping of M reference signal resources to N antenna ports in yet another embodiment of the present application.

[0077] FIG. 15 is a schematic structural diagram of a communication apparatus provided in one embodiment of the present application.

[0078] FIG. 16 is a schematic structural diagram of a communication apparatus provided in another embodiment of the present application.

[0079] FIG. 17 is a schematic structural diagram of an apparatus provided in one embodiment of the present application. DETAILED DESCRIPTION

[0080] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

[0081] In the description of the present application, unless otherwise specified, " / " represents that the objects before and after the correlation are in an "or" relationship, for example, A / B can represent A or B; "and / or" in the present application is only a description of the correlation of the associated objects, which means that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. And, in the description of the present application, unless otherwise specified, "multiple" means two or more than two. "At least one of the following" or the like means any combination of the items, including any combination of single item or multiple items. For example, at least one of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, and c can be single or multiple. In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, "first", "second", and the like are used to distinguish the same items or similar items with basically the same function and role. The skilled in the art can understand that "first", "second", and the like do not limit the quantity and execution order, and "first", "second", and the like do not necessarily mean different. It should be understood that the present application "in the case of", "if", "when", "if", and the like can be replaced.

[0082] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: 5th generation (5G) system or new radio (NR), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), satellite and other non-terrestrial communication systems, communication systems combining terrestrial communication and non-terrestrial communication, etc. The technical solutions provided in the present application can also be applied to future communication systems.

[0083] In order to understand the embodiments of the present application, first, the communication system suitable for the embodiments of the present application is described in conjunction with FIG. 1. As shown in FIG. 1, the communication system includes a radio access network 100. The radio access network 100 can include at least one network device (such as 110a, 110b, and 110c in FIG. 1), and can also include at least one terminal (such as 120a to 120g in FIG. 1).

[0084] The terminal device in the embodiments of the present application can refer to a user equipment (user equipment, UE), a station, an access terminal, a user unit, a user station, a mobile station, a mobile station (mobile station, MS), a remote station, a remote terminal, a mobile terminal (mobile terminal, MT), a user terminal, a terminal (or a terminal device), a wireless communication device, a user agent or a user device, etc., or a device for providing voice or data connectivity to a user, which can also be an Internet of Things device, for example, the terminal device includes a handheld device with wireless connection function, a vehicle-mounted device, etc., which is not limited in the embodiments of the present application. The terminal device in the embodiments of the present application can be a mobile phone, a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a large screen, a vehicle-mounted device (for example, a car, a bicycle, an electric vehicle, an airplane, a ship, a train, a high-speed rail, etc.), a wearable device (for example, a smart watch, a smart bracelet, a pedometer, smart glasses, etc.), a machine type communication (machine type communication, MTC) terminal device, a terminal device in a 5G network or a terminal device in a future evolved public land mobile network (public land mobile network, PLMN), etc., which is not limited in the embodiments of the present application.The terminal device in the embodiments of the present application can also be a tablet computer (Pad), a notebook computer, a palm computer, a mobile internet device (MID), a virtual reality (VR) device, an augmented reality (AR) device, a smart point of sale (POS) machine, a customer-premises equipment (CPE), a light UE, a reduced capability UE (RedCap UE), a wireless terminal in industrial control, a smart home device (for example, a refrigerator, a television, an air conditioner, an electricity meter, etc.), a smart robot, a mechanical arm, a plant device, a wireless terminal in self driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a flight device (for example, a smart robot, a hot air balloon, a drone, an airplane), etc. The terminal device can also be a vehicle device, for example, a whole vehicle device, a vehicle-mounted module, a vehicle-mounted chip, an on board unit (OBU) or a telematics box (T-BOX), etc. The terminal device can also be other devices with terminal functions, for example, the terminal device can also be a device in device to device (D2D) communication.

[0085] In some embodiments, the terminal device can be used to act as a base station. Optionally, the terminal device can act as a scheduling entity to provide a sidelink signal between terminal devices in vehicle to everything (V2X) or device to device (D2D) communication, etc. For example, a cellular phone and a car can communicate using the sidelink signal, or a cellular phone and a smart home device can also communicate using the sidelink signal without relaying the communication signal through the base station.

[0086] The network device (or communication apparatus) in the embodiments of the present application can refer to a radio access network (RAN) node (or device) that accesses a terminal device to a wireless network, which can also be referred to as a base station (BS). For example, the network device can be a Node B, an evolved Node B (eNodeB), a next generation Node B (gNB) in a 5G mobile communication system, a transmission reception point (TRP), an access point (AP), a network device in a non-terrestrial network (NTN) system (such as a satellite), a base station in a future mobile communication system, an access node (AP) in a WiFi system, a wireless controller in a cloud radio access network (CRAN) scenario, a relay station, an access point, a vehicle-mounted device, a wearable device, a network device in other communication systems in future evolution, and the like.

[0087] In some embodiments, a terminal device can be assisted by multiple RAN nodes to implement wireless access, and different RAN nodes can respectively implement part of functions of a base station. For example, a RAN node (i.e., a network device in the present application) can be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and the DU can be separately arranged, or can be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna processing unit (AAU), or a remote radio head (RRH). In different systems, the CU (or CU-CP and CU-UP), DU or RU can also have different names, but those skilled in the art can understand their meanings. For example, in an open radio access network (ORAN) system, the CU can also be referred to as an open CU (O-CU), the DU can also be referred to as an open DU (O-DU), the CU-CP can also be referred to as an O-CU-CP, the CU-UP can also be referred to as an O-CU-UP, and the RU can also be referred to as an O-RU. Any one of the CU (or CU-CP, CU-UP), DU and RU in the present application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. It should be understood that the present application does not limit the specific technology and specific device form of the network device.

[0088] In some embodiments, the network device can be fixed or mobile, and the present application does not limit this. For example, a helicopter or a drone can be configured as a mobile network device, and one or more cells can move according to the position of the mobile network device. In other examples, a helicopter or a drone can be configured to serve as a device that communicates with another network device.

[0089] In some embodiments, the network device can be deployed on land or in the air, and the present application does not limit this. For example, the network device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can be deployed on the water surface; and can be deployed on an aircraft, a balloon, and a satellite in the air.

[0090] In the embodiments of the present application, the terminal device or the network device can include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes central processing units (CPUs), memory management units (MMUs), memories (also referred to as main memories), and the like. The operating system can be any one or more computer operating systems that implement business processing through processes. The application layer includes browsers, address books, word processing software, instant messaging software, and the like. Moreover, the specific structure of the execution subject of the method provided in the embodiments of the present application is not particularly limited in the embodiments of the present application, as long as the execution subject can communicate according to the method provided in the embodiments of the present application by running a program in which the code of the method provided in the embodiments of the present application is recorded.

[0091] In addition, various aspects or features of the disclosure can be realized as methods, apparatus, or articles of manufacture using standard programming and / or engineering techniques. The term "article of manufacture" as used in the disclosure encompasses a computer program or other processor-readable instructions stored on or in one or more computer-readable media, such as any type of disk including floppy disks, optical disks, CDs, high definition DVDs, smart cards, flash drives, and the like. Additionally, various storage media described herein can represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and / or carrying instruction and / or data.

[0092] With the development of communication technology, not only the connection between people becomes closer, but also more and more terminal devices are interconnected, including industrial devices, cars, sensors, home devices, etc. If the terminal devices can perceive the surrounding environment and share the environmental information with other terminal devices, the connection will become more intelligent. To realize this vision, an integrated sensing and communication (ISAC) system is introduced in some communication systems to improve the network sensing capability.

[0093] In future mobile communication systems, higher frequency bands (millimeter waves or even terahertz), wider bandwidths, and larger-scale antenna arrays make high-precision, high-resolution sensing possible, thus enabling communication and sensing integration in one system, making communication and sensing functions complementary. On the one hand, the entire communication network can serve as a huge sensor, and network elements send and receive wireless signals, which can better perceive and understand the physical world by using the transmission, reflection, and scattering of radio waves. By obtaining distance, speed, and angle information from wireless signals, high-precision positioning, gesture capture, motion recognition, detection and tracking of passive objects, imaging, and environmental reconstruction can provide a wide range of new services, realizing "network as a sensor". On the other hand, the high-precision positioning, imaging, and environmental reconstruction capabilities provided by sensing can help improve communication performance, such as more accurate beamforming, faster beam failure recovery, and lower overhead for terminal channel state information (CSI) tracking, realizing "sensing-aided communication". Sensing is also an observation and sampling of the physical world and the biological world, and it is a "new channel" connecting the digital world.

[0094] The application scenarios of the ISAC system in future mobile communications are likely to include ultra-high-precision positioning and tracking, synchronous imaging, map construction, and human sensory enhancement. In the application scenarios of synchronous imaging, map construction, and positioning, the sensing capabilities of these three aspects can be mutually enhanced. For example, images of the surrounding environment can be captured through imaging, the positions of surrounding objects can be obtained through positioning, and the constructed map can in turn improve the position reasoning capability.

[0095] Sensing and communication can be divided into three levels from loose coupling to complete integration. At the lowest level, communication and sensing share hardware and spectrum. Hardware sharing can effectively reduce costs, simplify deployment, and reduce maintenance issues, allowing sensing to benefit from the economies of scale of mobile communication networks; spectrum sharing is more efficient than using independent spectrum for each function. At the second level, waveform and signal processing are integrated, and time-domain, frequency-domain, and spatial-domain waveform and signal processing techniques can be combined to serve both sensing and communication functions. At the third level, information can be shared across layers, modules, and nodes, and communication and sensing are fully integrated, significantly improving system performance, greatly reducing the overall cost and energy consumption of the network system, and making the system smaller. Other technology innovations such as large-scale coordination between base stations and user equipment (UE), communication and sensing waveform joint design, advanced interference cancellation techniques, and native artificial intelligence (AI) techniques can further enhance the processing capabilities of sensing data.

[0096] The communication network mentioned above can also be referred to as a sensing network, that is, a communication network mainly using sensing technology and communication technology to cooperatively complete information sensing, information transmission and information processing of the physical world.

[0097] FIG. 2 is a schematic architecture diagram of a possible sensing network in the embodiments of the present application.

[0098] As shown in FIG. 2, a sensing network element (or device, component, etc.) that is deployed in the core network or the RAN side to provide sensing function for the network can be added in the architecture. The sensing network element can be referred to as a sensing function (SF), and can also be referred to as a sensing management function (SMF), or other names.

[0099] For example, in the architecture, the SF or a location management function (LMF) can be combined, that is, sensing and positioning can be the same network element. The LMF is a network element (or device, component, etc.) deployed in the core network to provide positioning function for the UE, and can complete calculation and feedback of location information in the 5G network, provide positioning process management, terminal capability acquisition, auxiliary data provision, terminal position estimation and other functions, and specifically provide the following functions: support UE position calculation, obtain downlink position measurement or position estimation from the UE, and obtain uplink position measurement from the RAN.

[0100] In the architecture, the SF can reuse the interfaces between the LMF and the access and mobility management function (AMF), network exposure function (NEF), unified data management (UDM), network data analytics function (NWDAF), policy control function (PCF), and other 5GC (5G core network) network elements for sensing interaction. The sensing control signaling between the LMF (including the SF) and the RAN or the UE is transmitted through the AMF. The sensing measurement data obtained by the RAN or the UE can be transmitted to the LMF (including the SF) via the control plane, using the LTE positioning protocol (LPP) or the NRPPa (NR positioning protocol annex) protocol, or can be transmitted through the user plane, using the user plane function (UPF) to forward or directly transmit to the LMF (including the SF).

[0101] The newly added SF network element in the architecture can be independently deployed or co-deployed with the 5GC network element (such as the AMF or the LMF) according to the sensing requirements. The network element can implement basic sensing functions, such as sensing authorization, sensing control, sensing measurement data processing, and result output. If the sensing function is co-deployed with the LMF, the LMF and the gateway mobile location center (GMLC) need to be enhanced in function to support the basic sensing functions. The GMLC is the first network element in the operator network to process the sensing request, perform privacy checks or authorization functions, route the sensing request to the AMF, and perform LMF selection.

[0102] The sensing network element (such as the SF) can set up interfaces with the 5GC network elements such as the AMF, the NEF, the UDM, the NWDAF, the PCF, the LMF, and the UPF, and interact with them. For example, the definitions of the interfaces can be as follows:

[0103] NS1 interface: a new NS1 interface is added between the sensing network element and the AMF. The interface can transmit sensing control signaling. For the scenario of transmitting sensing measurement data through the control plane, the interface can also transmit sensing measurement data.

[0104] NS2 interface: a new NS2 interface is added between the sensing network element and the NEF, which can transmit signaling messages exchanged between the sensing network element and the service-side AF (Application Function) through the NEF, and open the sensing result to the AF;

[0105] A NS3 interface is added between the sensing network element and the UDM, through which authentication or authorization can be implemented, and UE sensing subscription information, service AMF information or other information can be obtained;

[0106] NS4 interface: a new NS4 interface is added between the sensing network element and the NWDAF, through which the sensing network element can complete AI (Artificial Intelligence) processing related to the sensing service together with the NWDAF;

[0107] NS5 interface: a new NS5 interface is added between the sensing network element and the PCF, through which the sensing network element can transmit sensing requirements, QoS requirements or sensing results of the sensing service to the PCF, and the PCF can generate PCC policies related to the sensing service;

[0108] NS6 interface: a new NS6 interface is added between the sensing network element and the LMF, through which the sensing network element can obtain location-related information such as sensing area, RAN information of the sensing target, and location information of the sensed UE;

[0109] NS7 interface: a new NS7 interface is added between the sensing network element and the user plane function, and sensing measurement data can be transmitted directly from the (R)AN to the sensing network element through the user plane function, or indirectly forwarded to the sensing network element through the UPF. If the UPF is used for forwarding in the scenario where the (R)AN performs sensing, the UPF needs to be modified to support (R)AN-granularity data transmission.

[0110] In addition to the above-mentioned new interfaces, existing interfaces (such as N1, N2, N5, N8, N33, etc.) can support the transmission of sensing service-related information such as authentication information, sensing service type, sensing service quality requirement, sensing measurement data, and sensing result.

[0111] If the sensing network element and the LMF are combined, an interface can be added between the LMF and the GMLC to transmit sensing service-related information. The interfaces related to the LMF and the GMLC (such as the NL1 interface between the AMF and the LMF, the NL2 interface between the AMF and the GMLC, the NL5 interface between the NEF and the GMLC, and the NL6 interface between the UDM and the GMLC) can also support the transmission of sensing service-related information, and a new NL9 interface is added between the LMF and the GMLC. The specific description is as follows:

[0112] N33 interface: interface between AF and NEF, through which perception service type, service requirement, perception result, etc. can be transmitted;

[0113] NL5 interface: interface between NEF and GMLC, through which perception service type, service requirement, perception result, etc. can be transmitted;

[0114] NL6 interface: interface between GMLC and UDM, through which privacy check data can be transmitted;

[0115] NL2 interface: interface between NEF and AMF, through which perception service type, service requirement, perception result, etc. can be transmitted;

[0116] NL1 interface: interface between AMF and LMF, through which perception service type, service requirement, perception result, etc. can be transmitted;

[0117] NL9 interface (new interface): interface between GMLC and LMF, through which perception service type, service requirement, perception result, etc. can be transmitted.

[0118] Figure 3 is a schematic architecture diagram of another possible perception network in the embodiments of the present application.

[0119] As shown in Figure 3, in this architecture, the perception network element (such as SF) is relatively independent of the existing 5GC, and the perception network element does not need to interact with the 5GC or only performs less interaction. For scenarios where there is only a perception demand within a specific area or only a perception demand, this architecture can provide perception services without the control of the 5GC or with only part of the network elements participating in the control, and can also achieve that the perception measurement data or the perception result does not go out of the park through the local deployment of the SF, thereby meeting the needs of enterprises for the security and privacy of the perception measurement data or the perception result, and reducing the perception latency. This architecture is simple, flexible, efficient, has fewer transmission nodes, is easy to deploy, and can optionally support UE-related perception needs, and consider implementation schemes for authorization, mobility management and billing functions as needed.

[0120] For example, in this architecture, the SF can directly establish a connection with the RAN node, and the perception control plane signaling message and the perception measurement data are both transmitted through the newly defined interface NS1. When the UE participates in perception, the control plane signaling message is forwarded to the SF through the AMF, and the perception measurement data is transmitted through NS1. In addition, the SF can also have interfaces with the 5GC network elements AMF, NEF or NWDAF to control the AF to provide the perception service demand to the SF through the core network function. The definition of each interface can be as follows:

[0121] NS1 interface: a new NS1 interface between the sensing network element and the (R)AN, which transmits sensing control signaling or sensing measurement data; in one deployment implementation, the sensing function can also be deployed in the base station;

[0122] NS2 interface: a new NS2 interface between the sensing network element and the AMF, which receives the sensing service requirements from the UE or transmits signaling messages between the sensing network element and other network elements in the core network, such as interaction messages with the UDM;

[0123] NS3 interface: a new NS3 interface between the sensing network element and the NEF, which transmits signaling messages between the sensing network element and the service-side AF through the NEF, and opens the sensing result to the AF. The interaction between the sensing function and the AF can also not pass through the NEF. In actual deployment, NS2 and NS3 are selected, that is, the AF indirectly sends a sensing service request to the SF through NS2 (NEF) or directly sends a sensing service request to the SF (without NEF); or the AF sends a sensing service request to the SF through N33 (NEF) and NS2 (AMF).

[0124] NS4 interface: a new NS4 interface between the sensing network element and the NWDAF, which performs intelligent analysis and prediction with the NWDAF to generate a sensing result.

[0125] FIG. 4 is a schematic architecture diagram of an open radio access network (O-RAN) system in an embodiment of the present application.

[0126] The O-RAN can be understood as follows compared with the traditional RAN architecture: the RAN can be composed of a series of modules, such as antennas, RRUs, BBUs, and the traditional RAN architecture does not care about the transmission and connection between the internal modules, but only cares about the overall reception and output, so for the traditional RAN device, all modules in the RAN are from the same manufacturer; the O-RAN defines the architecture connection and interface standardization between the modules in the RAN, so that a RAN can be disassembled into multiple modules, because of the interface standardization, so it can be assembled by modules from different device manufacturers, such as for ORAN, the antenna of company A, the RRU of company B, and the BBU of company C can be purchased, and finally assembled into a RAN device. For the O-RAN architecture diagram of FIG. 4, combined with the european telecommunications standards institute (ETSI) TS103 859 protocol, the main network elements contained are described as follows:

[0127] Non-real time RAN intelligent controller (Non-RT RIC): Non-real time intelligent management for RAN functions. Can implement AI / ML workflows including model training and model updates, and guide applications / functions in Near-RT RIC based on policies. Non-RT RIC is located in the service management orchestration (SMO) module.

[0128] Near-real time RAN intelligent controller (Near-RT RIC): Near-real time intelligent management for RAN. Implements near-real time control and optimization of modules and resources of O-RAN through data collection and related operations on the E2 interface.

[0129] O-RAN central unit (O-CU): To implement the radio resource control (RRC) layer, packet data convergence protocol (PDCP) layer, and service data adaptation protocol (SDAP) layer and other control functions in the 3GPP standard.

[0130] O-RAN central unit control plane (O-CU-CP): Similar to the CU-CP in the NR system, to implement the functions of the RRC layer and the control plane functions of the PDCP layer. It belongs to the O-CU part.

[0131] O-RAN central unit user plane (O-CU-UP): Similar to the CU-UP in the NR system, to implement the functions of the SDAP layer and the user plane functions of the PDCP layer. It belongs to the O-CU part.

[0132] O-RAN Distributed Unit (O-DU): Based on low-layer function split, used to implement the radio link control (RLC) layer, media access control (MAC) layer, and higher physical layer (Higher PHY) in the 3GPP standard. Among them, the higher physical layer functions include one or more of the following: forward error correction (FEC) encoding / decoding, scrambling / descrambling, or modulation / demodulation.

[0133] O-RAN Radio Unit (O-RU): Based on low-layer function split, used to implement lower physical layer (Lower PHY) functions and radio frequency functions in the 3GPP standard. Among them, the lower physical layer functions include one or more of the following: fast Fourier transform (FFT) transform / inverse fast Fourier transform (iFFT) transform, digital beamforming, or extraction and filtering of physical random access channels (PRACH). Similar to the transmission reception point (TRP) or remote radio head (RRH) in 3GPP, but it includes lower physical layer functions such as FFT / iFFT or PRACH extraction.

[0134] O-RAN Cloud (O-Cloud): As a cloud computing platform, it includes physical infrastructure nodes for hosting O-RAN functions such as RAN intelligent controller (RIC), O-DU, etc.; supports software components (such as operating systems, virtual machine monitors, container runtimes), management and orchestration functions.

[0135] For the O-RAN architecture diagram of Figure 4, in combination with the ETSI TS103 859 protocol, the interfaces contained are described as follows:

[0136] A1 interface: interface between non-RT RIC and near-RT RIC, used for intelligent dynamic control of O-RAN internal wireless resources. The non-RT RIC provides policies, rich information and ML model updates, etc. to the near-RT RIC through the A1 interface, and the near-RT RIC provides policy feedback to the non-RT RIC through the A1 interface.

[0137] E2 interface: E2 interface is an open interface between two endpoints, used to connect near-RT RIC and RAN node, including, for example, CU, DU in 5G, O-RAN compatible eNB in 4G, O-CU (O-CU-CP and / or O-CU-UP) and / or O-DU in O-RAN, etc. RIC can obtain RAN node data collection and feedback through E2 node, and RAN node can obtain near-RT RIC control feedback through E2 node.

[0138] O1 interface: interface between management entity in SMO and O-RAN module, used for operation management, through which FCAPS (fault configuration accounting performance and security) management, software management, file management are realized.

[0139] O2 interface: interface between SMO and infrastructure management framework supporting O-RAN virtual network function.

[0140] E1 interface: interface between CU-CP and CU-UP.

[0141] F1-C interface: interface between CU-CP and DU.

[0142] F1-U interface: interface between CU-UP and DU.

[0143] Under the O-RAN architecture, the network element with sensing function can be RT RIC, and O-DU completes multipath measurement and reports the measurement results to RT RIC. The network element with sensing function can also be O-CU, which receives the multipath measurement results reported by O-DU and completes sensing calculation.

[0144] Figure 5 is a schematic architecture diagram of a RAN chip system in an embodiment of the present application. As shown in Figure 5, the RAN chip can include a central unit (CU), a distributed unit (DU), and a radio unit (RU). Among them, the CU performs upper layer second layer (Layer 2, L2) and third layer (Layer 3, L3) functions; midhaul and backhaul interfaces are used to carry traffic between the CU and the DU and between the CU and the core network; the DU performs L1 and part of L2 functions; the RU performs L1 calculation and radio frequency (RF) digital part functions; the fronthaul and backhaul interfaces are used to carry traffic between the RU and the DU and between the CU and the DU. The integrated DU includes the above-mentioned DU and RU functions.

[0145] The CU / DU hardware includes a chassis platform, a mainboard, peripherals, and cooling equipment. The mainboard contains processing units, memories, internal I / O interfaces, and external connection ports. Its hardware accelerator design has interfaces, and the hardware function components include storage of software, hardware, and system debugging interfaces, and a board management controller.

[0146] The DU system is usually implemented using a multi-core processor and one or more hardware accelerators. Part of the DU protocol stack can be implemented in software running on the multi-core processor, and the computationally intensive L1 and L2 functions can be offloaded to hardware accelerators based on field-programmable gate array (FPGA) / graphics processing unit (GPU); or all L1 functions are offloaded to hardware accelerators based on FPGA / GPU, while other protocol stack contents are implemented in software running on the processor; or all protocol stacks are implemented in software running on the processor. The hardware accelerator supports interconnection with an x86 or non-x86 processor, and similarly, the accelerator has a multi-channel peripheral component interconnect express (PCIe) interface pointing to the CPU, and is externally connected through a gigabit ethernet (GbE) connection.

[0147] The RU includes three parts: an O-RAN processing unit (OPU) receives enhanced Common Public Radio Interface (eCPRI) frames from the O-RAN fronthaul and performs the fronthaul interface, the lowest layer L1 (encoding, scrambling, modulation, layer mapping, precoding), synchronization, beamforming, and resource unit mapping. The OPU can be implemented as a CPU, FPGA, or application specific integrated circuit (ASIC). A digital processing unit (DPU) performs synchronization, digital down conversion (DDC), digital up conversion (DUC), crest factor reduction (CFR), and digital pre-distortion (DPD) to improve power amplifier efficiency by reducing the peak-to-average power ratio (PAPR) / adjacent channel leakage ratio (ACLR) of the RF front end; the DPU can be implemented as an FPGA or ASIC. The radio frequency (RF) processing unit of the O-RU includes a transceiver module, up / down converters, power amplifiers (PAs), low noise amplifiers (LNAs), transmit / receive (Tx / Rx) filters. All conversions between the analog and digital domains (digital-to-analog converters (DACs) and analog-to-digital converters (ADCs)) (e.g., (RF sampling, use of RF, intermediate frequency (IF), and local oscillator (LO) mixing for frequency conversion in upconversion and downconversion) are performed within the transceiver module. Note that the physical and logical partitions within the RF processing unit do not require specific boundaries.

[0148] With the development of communication technology, super large dimension antenna arrays are introduced in some communication systems, for example, the number of antenna ports used for transmission at the side of an access network device can reach 128 / 256 (128 / 256T) or even more.

[0149] Currently, channel state information (CSI) measurement requires a terminal device to measure channel state information reference signals (CSI-RS) transmitted by all antenna ports.

[0150] For example, as shown in FIG. 6, the base station side includes 256 antenna ports, and there are 3 transmission paths between the base station and the terminal device, one of which is directly transmitted by the base station to the terminal device, and the other two are reflected (or scattered) to the terminal device by scatterer 1 and scatterer 2, respectively. That is, after the base station transmits CSI-RS, the CSI-RS is transmitted through the three paths, and the terminal device needs to measure the CSI-RS of 256 antenna ports, which will greatly increase the number of antenna ports of the CSI-RS measured by the terminal device, and require large-dimension matrix operations and singular value decomposition (SVD) and the like, thereby increasing the complexity of CSI measurement on the terminal device side, and also increasing the power consumption of the terminal device in measuring the CSI-RS.

[0151] In order to reduce the complexity and power consumption of CSI measurement on the terminal device side, one method is for the terminal device to measure only part of the CSI-RS of the antenna ports (for example, measure every other antenna port in the horizontal direction) when measuring the CSI-RS, and then reconstruct the channel of all antenna ports through the measurement results of the part of the antenna ports. However, due to the elongation of the interval between the measured antenna ports, there is a phase ambiguity problem caused by grating lobes, which leads to inaccurate reconstructed channels.

[0152] For example, as shown in FIG. 7, the terminal device can measure every other antenna port in the horizontal direction, and the measured phase difference is which can be 60°, and the phase difference between the adjacent two antenna ports can be estimated as which can be However, due to the elongation of the interval between the measured antenna ports, there is a phase ambiguity problem caused by grating lobes, and the estimated phase difference between the adjacent two antenna ports may no longer be accurate, and in fact may be n is an integer, such as n = 1, and in fact is 210°. At this time, according to the estimated inaccurate phase difference, the reconstructed channel will be inaccurate. ​

[0153] To solve one or more of the above technical problems, the present application provides a communication method and a communication device, which can reduce the complexity and power consumption of terminal device side reference signal measurement. The communication method in the embodiments of the present application is described in detail below in conjunction with FIG. 8.

[0154] FIG. 8 is a schematic flowchart of a communication method according to an embodiment of the present application. The method 800 shown in FIG. 8 can include steps S810, S820 and S830, which are specifically as follows.

[0155] S810, the network device sends first information to the terminal device.

[0156] The network device can be an access network device (such as a base station), a distributed unit (such as a DU or an O-DU), or a centralized unit (such as a CU or an O-CU).

[0157] Optionally, if the network device is a distributed unit, when the network device sends information to the terminal device, the network device can send information to the terminal device through a radio frequency unit (such as an RU), and when the network device receives information sent by the terminal device, the network device can receive information sent by the terminal device through the radio frequency unit; if the network device is a centralized unit, when the network device sends information to the terminal device, the network device can send information to the terminal device through the distributed unit and the radio frequency unit, and when the network device receives information sent by the terminal device, the network device can receive information sent by the terminal device through the distributed unit and the radio frequency unit.

[0158] In some embodiments, the sensing network element mentioned in the foregoing embodiments can be deployed in the network device, and the network device can determine the first information through the sensing network element; or the sensing network element can be deployed in a core network element, and the core network element can determine the first information through the sensing network element and then transmit the first information to the network device.

[0159] The first information can be used to determine the time delay on the first transmission path corresponding to the first antenna port. Optionally, the first transmission path can pass through a first scatterer, and the first antenna port can be one of N antenna ports of the network device, where N is a positive integer.

[0160] For example, as shown in FIG. 7, the first transmission path can be a transmission path from the first antenna port (the rightmost antenna port in the second row of the antenna panel shown in FIG. 7) of the base station to the terminal device through the first scatterer.

[0161] Optionally, the first information can be used to indicate one or more of the following: the position of the first scatterer, the time delay on the first transmission path corresponding to the first antenna port, and the time delay corresponding to the first angle of the first antenna port.

[0162] In the embodiments of the present application, the first information is used to indicate one or more of the above, so that the terminal device can conveniently determine the phase difference between adjacent antenna ports according to the first information.

[0163] The first angle can include an angle of departure and / or an angle of arrival corresponding to the first transmission path. Optionally, the angle of departure can include an azimuth of departure (AOD) and / or a zenith of departure (ZOD), and the angle of arrival can include an azimuth of arrival (AOA) and / or a zenith of arrival (ZOA).

[0164] The horizontal angle of departure can refer to the angle between the spatial channel multipath (such as the first transmission path) and the horizontal direction of the transmitting end (such as the first antenna port), the vertical angle of departure can refer to the angle between the spatial channel multipath (such as the first transmission path) and the vertical direction of the transmitting end (such as the first antenna port), the horizontal angle of arrival can refer to the angle between the spatial channel multipath (such as the first transmission path) and the horizontal direction of the receiving end (such as the terminal device), and the vertical angle of arrival can refer to the angle between the spatial channel multipath (such as the first transmission path) and the vertical direction of the receiving end (such as the terminal device).

[0165] It should be noted that the horizontal direction and the vertical direction in the embodiments of the present application can be understood as the direction in the antenna panel, and similarly, the row and the column can be understood as the row and the column in the antenna panel. An example of the antenna panel can be as shown in FIG. 9.

[0166] Optionally, in the case where the first information indicates the position of the first scatterer, the terminal device can determine the transmission path (i.e., the first transmission path) corresponding to the first scatterer according to the position of the first scatterer, and thus can determine the delay on the transmission path.

[0167] Optionally, in the case where the first information indicates the delay on the first transmission path corresponding to the first antenna port, the terminal device can directly obtain the delay on the first transmission path corresponding to the first antenna port according to the first information.

[0168] Optionally, in the case where the first information indicates the delay of the first angle corresponding to the first antenna port, the terminal device can determine the transmission path (i.e., the first transmission path) of the first angle according to the first angle, and thus can determine the delay on the transmission path.

[0169] S820, the terminal device measures the reference signal of part of the antenna ports in the N antenna ports, and determines the channel measurement result of the part of the antenna ports.

[0170] Optionally, the partial antenna ports can include one or more antenna ports. Optionally, the partial antenna ports can include a plurality of antenna ports discretely distributed in a horizontal direction and / or a vertical direction of an antenna panel (which can include N antenna ports).

[0171] For example, the partial antenna ports can be spaced by one or more antenna ports in a horizontal direction of an antenna panel (which can include N antenna ports); or, the partial antenna ports can also be spaced by one or more antenna ports in a vertical direction of the antenna panel.

[0172] As shown in FIG. 9, the antenna panel on the network device side, the partial antenna ports can include the antenna ports in the four dashed boxes, that is, the terminal device measures the reference signals with a spacing of three antenna ports in a horizontal direction of an antenna panel (which can include N antenna ports). It should be noted that each "X" in FIG. 9 can refer to 2 antenna ports of cross polarization. The antenna ports in the dashed boxes shown in subsequent FIG. 10, FIG. 12, FIG. 13 and FIG. 14 also represent similar meanings (i.e., the antenna ports in the dashed boxes are the partial antenna ports measured by the terminal device).

[0173] Optionally, the channel measurement result can include a phase difference between each antenna port in the horizontal direction and / or a phase difference between each antenna port in the vertical direction (in the partial antenna ports).

[0174] For example, as shown in FIG. 9, the channel measurement result can include a phase difference between the antenna ports in the first dashed box and the antenna ports in the second dashed box, a phase difference between the antenna ports in the second dashed box and the antenna ports in the third dashed box, and a phase difference between the antenna ports in the third dashed box and the antenna ports in the fourth dashed box in the same row (in the horizontal direction of the antenna panel).

[0175] S830, the terminal device determines the channel measurement result of the N antenna ports according to the first information and the channel measurement result of the partial antenna ports.

[0176] In some embodiments, the terminal device can determine a phase difference between two adjacent antenna ports in the N antenna ports according to the first information.

[0177] For example, the frequency domain expression of the multipath channel can be expressed as:

[0178] where a i is the path attenuation of the ith path, f c is the carrier center frequency, τ i is the transmission delay of the ith path between the first transmitting port and the first receiving port.

[0179] It is the time delay steering vector in the frequency domain, where Δf is the subcarrier spacing and F is the number of subcarriers;

[0180] It is the steering vector of the i-th radius on the horizontal antenna port of the receiver with respect to the angle, d r1 M is the spacing between adjacent antenna ports in the horizontal direction at the receiving end. r1 This refers to the number of horizontal antenna ports at the receiver. It is the steering vector of the i-th radius on the vertical antenna port of the receiver with respect to the angle, d r2 M is the spacing between adjacent antenna ports in the vertical direction of the receiver. r2 This refers to the number of antenna ports in the vertical direction at the receiver. It is the AOA of the i-th path, θ ri It is the ZOA of the i-th path;

[0181] It is the steering vector of the i-th path at the horizontal antenna port of the transmitting end with respect to the angle, d t1 M is the spacing between adjacent antenna ports in the horizontal direction at the transmitting end. t1 This refers to the number of horizontal antenna ports at the transmitting end. It is the steering vector of the i-th radius on the vertical antenna port of the transmitting end with respect to the angle, d t2 M is the spacing between adjacent antenna ports in the vertical direction of the transmitting end. t2 It is the number of antenna ports in the vertical direction at the transmitting end. It is the AOD of the i-th path, θ ti It is the ZOD of the i-th path.

[0182] From the above formula It can be seen that the steering vector corresponding to each antenna port has a linear relationship with the spacing between each antenna port (i.e., the difference between each steering vector lies in the coefficient (M)). t2 -1)d t2 Therefore, by knowing only the time delay on the i-th transmission path corresponding to the first antenna port, the phase of all antenna ports (e.g., N antenna ports) on the i-th transmission path can be estimated using the above formula. At this point, based on the phase estimates of all antenna ports, the phase difference between adjacent antenna ports can be accurately determined, eliminating the phase ambiguity problem caused by grating lobes.

[0183] For example, in the foregoing embodiments, It can be seen that without determining the accurate phase of each antenna port, as long as the approximate range of the phase of the antenna port is determined, n can be determined, and thus the phase difference between adjacent antenna ports can be accurately determined, and the phase ambiguity problem caused by the grating lobe can be eliminated.

[0184] Optionally, after the terminal device determines the phase difference between the two adjacent antenna ports in the N antenna ports according to the first information, the terminal device can determine (or reconstruct) the channel measurement result of the N antenna ports according to the phase difference between the two adjacent antenna ports and the channel measurement result of the part of the antenna ports.

[0185] In some embodiments, the terminal device can report a reference signal measurement capability to the network device. In the embodiments of the present application, the reference signal can be a CSI or other reference signal.

[0186] For example, before step S810, method 800 can further include step S802, specifically as follows:

[0187] S802, the terminal device sends second information to the network device.

[0188] The second information can be used to indicate the number of antenna ports supported by the terminal device for measurement.

[0189] Optionally, the second information can also be used to request the network device to send the first information. For example, in the case that the second information indicates that the terminal device does not support measurement of all antenna ports (such as N antenna ports), the network device can send the first information to the terminal device.

[0190] In the embodiments of the present application, the terminal device sends the second information to the network device, which helps the network device to configure (such as configuring reference signal resources) or send the first information (such as sending the first information to the terminal device in the case that the terminal device does not support measurement of N antenna ports) according to the number of antenna ports supported by the terminal device for measurement.

[0191] In some embodiments, the network device can configure reference signal resources for the terminal device.

[0192] For example, method 800 can further include step S812, specifically as follows:

[0193] S812, the network device sends third information to the terminal device.

[0194] The third information can be used to indicate M reference signal resources corresponding to the N antenna ports, and M is a positive integer.

[0195] Optionally, when sending the reference signals of the N antenna ports, the network device can send the reference signals of the N antenna ports through the M reference signal resources.

[0196] Optionally, M can be 1, that is, 1 reference signal resource can be configured for N antenna ports; or M can be greater than 1, that is, multiple reference signal resources can be configured for N antenna ports.

[0197] Optionally, the third information can be the same as the first information. For example, the first information can also indicate the M reference signal resources corresponding to the N antenna ports.

[0198] In the embodiment of the present application, the network device sends the third information to the terminal device, which helps the terminal device to determine the M reference signal resources corresponding to the N antenna ports according to the third information.

[0199] In some embodiments, in the case that M is greater than 1, the network device can indicate to the terminal device the mapping manner of the antenna ports of the M reference signal resources and the N antenna ports.

[0200] For example, the method 800 can further include step S814, specifically as follows:

[0201] S814, the network device sends indication information to the terminal device, the indication information being used to indicate the mapping manner of the antenna ports of the M reference signal resources and the N antenna ports.

[0202] Optionally, the sum of the number of the antenna ports of the M reference signal resources can be N.

[0203] In the embodiment of the present application, the terminal device receives the indication information, which helps the terminal device to determine the mapping manner of the antenna ports of the M reference signal resources and the N antenna ports according to the indication information.

[0204] Optionally, when sending the reference signal of the N antenna ports, the network device can send the reference signal of the N antenna ports according to the mapping manner.

[0205] Optionally, the indication information can be carried in the first information, for example, the first information can also indicate the mapping manner of the antenna ports of the M reference signal resources and the N antenna ports.

[0206] Optionally, the indication information can also be carried in the third information, for example, the third information can also indicate the mapping manner of the antenna ports of the M reference signal resources and the N antenna ports.

[0207] In the embodiment of the present application, the indication information used to indicate the mapping manner is carried in other information (such as the first information or the third information), so that the indication information does not need to be transmitted through additional resources, thereby saving resource consumption and improving the resource utilization rate of the communication system.

[0208] Optionally, the antenna ports of the M reference signal resources can be mapped on the N antenna ports in various manners. Optionally, the antenna ports of each of the M reference signal resources can be sequentially mapped (or continuously mapped) or cross-mapped (or discretely mapped) in a horizontal direction of the antenna panel, or sequentially mapped (or continuously mapped) or cross-mapped (or discretely mapped) in a vertical direction of the antenna panel.

[0209] For example, the mapping manners can be any of the following:

[0210] The antenna ports of each of the M reference signal resources are sequentially mapped on the N antenna ports in a manner of first in the vertical direction and then in the horizontal direction, and the antenna ports of the same reference signal resource are distributed in the same antenna port block.

[0211] The antenna ports of each of the M reference signal resources are sequentially mapped on the N antenna ports in a manner of first in the horizontal direction and then in the vertical direction, and the antenna ports of the same reference signal resource are distributed in the same antenna port block.

[0212] The antenna ports of each of the M reference signal resources are sequentially mapped on the N antenna ports in a manner of first in the vertical direction and then in the horizontal direction, and the antenna ports of the same reference signal resource are distributed in the same antenna port block.

[0213] The antenna ports of each of the M reference signal resources are sequentially mapped on the N antenna ports in a manner of first in the vertical direction and then in the horizontal direction, and the antenna ports of the same reference signal resource are distributed in the same antenna port block.

[0214] wherein M1 and M2 are positive integers.

[0215] The following describes the above mapping manners with CSI-RS as an example in combination with FIG. 10, FIG. 12, FIG. 13 and FIG. 14. In FIG. 10 to FIG. 13, “1” represents the antenna ports of the CSI-RS resource 1, “2” represents the antenna ports of the CSI-RS resource 2, “3” represents the antenna ports of the CSI-RS resource 3, “4” represents the antenna ports of the CSI-RS resource 4, “5” represents the antenna ports of the CSI-RS resource 5, “6” represents the antenna ports of the CSI-RS resource 6, “7” represents the antenna ports of the CSI-RS resource 7, and “8” represents the antenna ports of the CSI-RS resource 8.

[0216] As shown in FIG. 10, the antenna ports of each of the 8 reference signal resources are sequentially mapped onto the 256 antenna ports in the order of vertical direction first and then horizontal direction; and the antenna ports of the same reference signal resource are distributed in the same antenna port block.

[0217] In the embodiment, the antenna ports of the same reference signal resource are distributed in the same antenna port block. Alternatively, the antenna ports of the same reference signal resource are distributed in the same area in the antenna panel, or the antenna ports of the same reference signal resource are continuously distributed in the antenna panel, or the antenna ports of the same reference signal resource are continuously distributed in the same area in the antenna panel.

[0218] For example, the distribution of the multiple antenna port blocks in the antenna panel can be as shown in FIG. 11. The antenna ports of the multiple reference signal resources in FIG. 10 can be distributed in the multiple antenna port blocks shown in FIG. 11, where the antenna ports of the CSI-RS resource 1 are distributed in the antenna port block 1, the antenna ports of the CSI-RS resource 2 are distributed in the antenna port block 2, the antenna ports of the CSI-RS resource 3 are distributed in the antenna port block 3, the antenna ports of the CSI-RS resource 4 are distributed in the antenna port block 4, the antenna ports of the CSI-RS resource 5 are distributed in the antenna port block 5, the antenna ports of the CSI-RS resource 6 are distributed in the antenna port block 6, the antenna ports of the CSI-RS resource 7 are distributed in the antenna port block 7, and the antenna ports of the CSI-RS resource 8 are distributed in the antenna port block 8. As can be seen, the antenna ports of the same reference signal resource are continuously distributed in the same area (i.e., in one antenna port block) in the antenna panel.

[0219] It should be noted that the number of the antenna port blocks, the distribution of the antenna port blocks, the number of the antenna ports included in the antenna port blocks, and the positions of the antenna ports included in the antenna port blocks (i.e., the positions of the antenna ports in the antenna panel) shown in FIG. 11 are examples and are not limiting, the antenna panel can also be divided into more or fewer antenna port blocks, the antenna port blocks can also be distributed in the antenna panel in other manners, and each antenna port block can also include other number of antenna ports or other positions of antenna ports, which are not limited in the embodiment.

[0220] As shown in FIG. 12, the antenna ports of each of the 8 reference signal resources are sequentially mapped onto the 256 antenna ports in the order of horizontal direction first and then vertical direction; and the antenna ports of the same reference signal resource are distributed in the same antenna port block, or in other words, the antenna ports of the same reference signal resource are distributed in the same area in the antenna panel, or in other words, the antenna ports of the same reference signal resource are continuously distributed in the antenna panel.

[0221] As shown in FIG. 13, the antenna ports of each of the 8 reference signal resources are mapped to the antenna ports in the manner of first mapping the antenna ports of 2 reference signal resources in the vertical direction sequentially, and then mapping the antenna ports of 4 reference signal resources in the horizontal direction crossly.

[0222] As shown in FIG. 14, the antenna ports of each of the 8 reference signal resources are mapped to the antenna ports in the manner of first mapping the antenna ports of 2 reference signal resources in the vertical direction crossly, and then mapping the antenna ports of 4 reference signal resources in the horizontal direction crossly.

[0223] In the embodiments of the present application, the mapping manner of the antenna ports of the M reference signal resources and the N antenna ports is any one of the above, so that the flexibility of the reference signal resource configuration can be improved.

[0224] In some embodiments, the method 800 can further include step S816, specifically as follows:

[0225] S816, the network device sends fourth information to the terminal device.

[0226] The fourth information can be used to indicate the reference signal resources of the M reference signal resources for measuring the part of the antenna ports.

[0227] Optionally, in S820, the terminal device can measure the reference signals of the part of the antenna ports according to the fourth information.

[0228] In the embodiments of the present application, the terminal device receives the fourth information, and the fourth information is used to indicate the reference signal resources of the M reference signal resources for measuring the part of the antenna ports, so that the terminal device can measure the reference signals of the specified antenna ports (such as the part of the antenna ports) according to the indication (i.e. the fourth information) of the network device.

[0229] In some embodiments, the method 800 can further include step S832, specifically as follows:

[0230] S832, the terminal device sends fifth information to the network device.

[0231] The fifth information can be used to indicate the channel measurement results of the N antenna ports. In this way, the network device can obtain the channel measurement results of the N antenna ports.

[0232] In the embodiments of the present application, the terminal device only needs to measure the reference signals of the part of the antenna ports, and can determine the channel measurement results of the N antenna ports according to the first information and the channel measurement results of the part of the antenna ports, so that the complexity and power consumption of the reference signal measurement on the terminal device side can be reduced.

[0233] Meanwhile, the first information is used to determine the time delay on the first transmission path passing through the first scatterer, and the terminal device can accurately determine the phase difference between adjacent antenna ports according to the first information, so as to eliminate the phase ambiguity problem caused by the grating lobe, thereby improving the accuracy of the reference signal measurement while reducing the complexity and power consumption of the reference signal measurement at the terminal device.

[0234] The method embodiments of the present application are described in detail above in combination with FIG. 1 to FIG. 14, and the device embodiments of the present application are described in detail below in combination with FIG. 15 to FIG. 17. It should be understood that the description of the method embodiments corresponds to the description of the device embodiments, and therefore, the parts not described in detail can be referred to the foregoing method embodiments.

[0235] FIG. 15 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device 1500 shown in FIG. 15 can be used in the terminal device in the foregoing embodiments, and can be the terminal device, a device (for example, a processor, a chip, a chip system, a circuit or a functional module, etc.) in the terminal device, or a device capable of being used in the terminal device, and can also be a logic module or software capable of realizing all or part of the terminal device.

[0236] As shown in FIG. 15, the communication device 1500 includes a receiving unit 1510, a measuring unit 1520 and a determining unit 1530, which are specifically as follows.

[0237] The receiving unit 1510 is configured to receive first information, the first information being used to determine the time delay on a first transmission path corresponding to a first antenna port, the first transmission path passing through a first scatterer, the first antenna port being one of N antenna ports of a network device, N being a positive integer.

[0238] The measuring unit 1520 is configured to measure a reference signal of part of the N antenna ports, and determine a channel measurement result of the part of the N antenna ports.

[0239] The determining unit 1530 is configured to determine a channel measurement result of the N antenna ports according to the first information and the channel measurement result of the part of the N antenna ports.

[0240] In some possible implementation manners, the first information is used to indicate one or more of the following: a position of the first scatterer, the time delay on the first transmission path corresponding to the first antenna port, and the time delay corresponding to a first angle of the first antenna port; wherein the first angle includes a departure angle and / or an arrival angle corresponding to the first transmission path.

[0241] In some possible implementation manners, the apparatus 1500 further includes a sending unit 1540, configured to: send second information, where the second information is used to indicate that the terminal device supports a number of antenna ports for measurement.

[0242] In some possible implementation manners, the receiving unit 1510 is further configured to: receive third information, where the third information is used to indicate M reference signal resources corresponding to the N antenna ports, and M is a positive integer.

[0243] In some possible implementation manners, when M is greater than 1, the receiving unit 1510 is further configured to: receive indication information used to indicate a mapping manner of antenna ports of the M reference signal resources and the N antenna ports.

[0244] In some possible implementation manners, the mapping manner is any one of the following: antenna ports of each of the M reference signal resources are sequentially mapped to the N antenna ports in a manner of first vertical direction and then horizontal direction, and antenna ports of a same reference signal resource are distributed in a same antenna port block; antenna ports of each of the M reference signal resources are sequentially mapped to the N antenna ports in a manner of first horizontal direction and then vertical direction, and antenna ports of a same reference signal resource are distributed in a same antenna port block; antenna ports of each of the M reference signal resources are sequentially mapped to antenna ports in a manner of first vertical direction M2 antenna ports of a reference signal resource and then horizontal direction M1 antenna ports of a reference signal resource cross mapping; antenna ports of each of the M reference signal resources are sequentially mapped to antenna ports in a manner of first vertical direction M2 antenna ports of a reference signal resource cross mapping and then horizontal direction M1 antenna ports of a reference signal resource cross mapping; where M1 and M2 are positive integers.

[0245] In some possible implementation manners, the third information includes the indication information used to indicate the mapping manner.

[0246] In some possible implementation manners, the receiving unit 1510 is further configured to: receive fourth information, where the fourth information is used to indicate reference signal resources of the M reference signal resources used to measure the part of antenna ports; and the measurement unit 1520 is specifically configured to measure reference signals of the part of antenna ports according to the fourth information.

[0247] In some possible implementation manners, the apparatus 1500 further includes a sending unit 1540, configured to: send fifth information, where the fifth information is used to indicate channel measurement results of the N antenna ports.

[0248] FIG. 16 is a schematic structural diagram of a communication apparatus provided by an embodiment of the present application. The communication apparatus 1600 shown in FIG. 16 can be used in the network device in the foregoing embodiments, and can be the network device, a device (processor, chip, chip system, circuit or a functional module, etc.) in the network device, or a device capable of matching the network device, and can also be a logic module or software capable of implementing all or part of the network device.

[0249] As shown in FIG. 16, the communication apparatus 1600 includes a sending unit 1610, which is specifically configured as follows.

[0250] The sending unit 1610 is configured to send first information, where the first information is used to determine a time delay on a first transmission path corresponding to a first antenna port, the first transmission path passes through a first scatterer, and the first antenna port is one of N antenna ports of the network device, where N is a positive integer.

[0251] The sending unit 1610 is configured to send reference signals of the N antenna ports.

[0252] In some possible implementation manners, the first information is used to indicate one or more of the following: a position of the first scatterer, the time delay on the first transmission path corresponding to the first antenna port, and a time delay corresponding to a first angle; and the first angle includes a departure angle and / or an arrival angle corresponding to the first transmission path.

[0253] In some possible implementation manners, the apparatus 1600 further includes a receiving unit 1620, configured to receive second information, where the second information is used to indicate a number of antenna ports supported by a terminal device for measurement.

[0254] In some possible implementation manners, the sending unit 1610 is further configured to send third information, where the third information is used to indicate M reference signal resources corresponding to the N antenna ports, and M is a positive integer.

[0255] The sending unit 1610 is specifically configured to send reference signals of the N antenna ports through the M reference signal resources.

[0256] In some possible implementation manners, when M is greater than 1, the sending unit 1610 is further configured to send indication information used to indicate a mapping manner of antenna ports of the M reference signal resources and the N antenna ports; and the sending unit 1610 is specifically configured to send reference signals of the N antenna ports according to the mapping manner.

[0257] In some possible implementation manners, the mapping manner is any one of the following: antenna ports of each of the M reference signal resources are sequentially mapped onto the N antenna ports in a manner of first vertical direction and then horizontal direction, and the antenna ports of the same reference signal resource are distributed in the same antenna port block; antenna ports of each of the M reference signal resources are sequentially mapped onto the N antenna ports in a manner of first horizontal direction and then vertical direction, and the antenna ports of the same reference signal resource are distributed in the same antenna port block; antenna ports of each of the M reference signal resources are sequentially mapped onto the antenna ports in a manner of first vertical direction M2 reference signal resources of antenna port mapping, and then horizontal direction M1 reference signal resources of antenna port cross mapping; antenna ports of each of the M reference signal resources are sequentially mapped onto the antenna ports in a manner of first vertical direction M2 reference signal resources of antenna port cross mapping, and then horizontal direction M1 reference signal resources of antenna port cross mapping; wherein M1 and M2 are positive integers.

[0258] In some possible implementation manners, the third information includes indication information used for indicating the mapping manner.

[0259] In some possible implementation manners, the sending unit 1610 is further configured to send fourth information, where the fourth information is used for indicating reference signal resources of the M reference signal resources used for measuring the part of antenna ports.

[0260] In some possible implementation manners, the apparatus 1600 further includes a receiving unit 1620, configured to receive fifth information, where the fifth information is used for indicating channel measurement results of the N antenna ports.

[0261] In some possible implementation manners, the network device is an access network device, a distributed unit, or a centralized unit.

[0262] FIG. 17 is a schematic structural diagram of an apparatus provided in an embodiment of the present application. The dashed line in FIG. 17 indicates that the unit or module is optional. The apparatus 1700 can be used to implement the methods described in the above method embodiments. The apparatus 1700 can be a chip or a communication apparatus.

[0263] The apparatus 1700 can include one or more processors 1710. The processor 1710 can support the apparatus 1700 to implement the methods described in the preceding method embodiments. The processor 1710 can be a general processor or a special-purpose processor. For example, the processor can be a central processing unit (CPU). Alternatively, the processor can also be other general processors, microprocessor units (MPUs), microcontroller units (MCUs), graphics processing units (GPUs), artificial intelligence processors (AI processors) or neural processing units (NPUs), digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gates or transistor logic, discrete hardware components, etc. The general processor can be a microprocessor or the processor can also be any conventional processor.

[0264] The apparatus 1700 can also include one or more memories 1720. The memory 1720 stores programs, which can be executed by the processor 1710, so that the processor 1760 performs the methods described in the preceding method embodiments. The memory 1720 can be independent of the processor 1710 or integrated in the processor 1710. In the embodiments of the present application, the memory 1720 can include, but is not limited to, a cache, a read-only memory (ROM), a random access memory (RAM), a synchronous dynamic random access memory (SDRAM), a hard disk drive (HDD) or a solid-state drive (SSD), an erasable programmable ROM (EPROM), or a compact disc read-only memory (CD-ROM), etc.

[0265] The apparatus 1700 can further include a transceiver 1730. The processor 1710 can communicate with other devices or chips through the transceiver 1730. For example, the processor 1710 can perform data transceiving with other devices or chips through the transceiver 1730.

[0266] It should be noted that the information interaction, execution process and the like between the above apparatus / units are based on the same concept as the method embodiments of the present application, and specific functions and brought technical effects can be referred to the method embodiments part, which will not be repeated here.

[0267] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above-mentioned division of functional units and modules is exemplified, and in actual application, the above-mentioned functions can be completed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or software. In addition, the specific name of each functional unit and module is only for easy distinction, and does not limit the protection scope of the present application. The specific working process of the unit and module in the system can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0268] The embodiment of the present application further provides a computer readable storage medium, the computer readable storage medium stores a computer program, when the computer program runs on a computer, the computer program makes the computer realize the steps in each method embodiment.

[0269] The embodiment of the present application further provides a computer program product, the computer program product includes a computer program, when the computer program runs on a computer, the computer program makes the computer realize the steps in each method embodiment.

[0270] The embodiment of the present application further provides a chip, the chip includes a processor and a memory, the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the apparatus or device (such as a communication apparatus) installed with the chip executes the steps in each method embodiment.

[0271] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the present application can implement all or part of the processes in the above-mentioned embodiment methods through a computer program to instruct relevant hardware to complete, and the computer program can be stored in a computer readable storage medium. When the computer program is executed by a processor, the steps of each method embodiment described above can be implemented. The computer program includes computer program code, which can be in the form of source code, object code, executable files or some intermediate forms. The computer readable storage medium at least includes any entity or device capable of carrying the computer program code to the device, recording medium, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium. For example, U disk, mobile hard disk, magnetic disk or optical disk, etc. In some possible implementation manners, the computer readable storage medium can not be an electrical carrier signal and a telecommunication signal.

[0272] In the above embodiments, the description of each embodiment has its own focus, and the parts not described or recorded in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0273] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in connection with the embodiments disclosed herein can be realized by electronic hardware, or a combination of computer software and electronic hardware. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0274] In the embodiments provided by the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. The division of the modules or units is only a logical function division, and there can be another division manner in actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed units can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0275] The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may also be distributed to multiple network units. Part or all of the units can be selected to achieve the purpose of the embodiment scheme according to actual needs.

[0276] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

A communication method characterized by comprising: The method is applied to a terminal device, and the method comprises: receiving first information, the first information being used to determine a time delay on a first transmission path corresponding to a first antenna port, the first transmission path passing through a first scatterer, the first antenna port being one of N antenna ports of a network device, N being a positive integer; measuring reference signals of part of the N antenna ports to determine channel measurement results of the part of the N antenna ports; determining channel measurement results of the N antenna ports according to the first information and the channel measurement results of the part of the N antenna ports. The method of claim 1, wherein The first information is used to indicate one or more of the following: a position of the first scatterer, a time delay on the first transmission path corresponding to the first antenna port, and a time delay corresponding to a first angle of the first antenna port; wherein the first angle comprises a departure angle and / or an arrival angle corresponding to the first transmission path. The method according to claim 1 or 2, characterized in that The method further comprises: sending second information, the second information being used to indicate a number of antenna ports supported by the terminal device for measurement. The method according to any one of claims 1 to 3, characterized in that The method further comprises: receiving third information, the third information being used to indicate M reference signal resources corresponding to the N antenna ports, M being a positive integer. The method according to claim 4, characterized in that In the case where M is greater than 1, the method further comprises: receiving indication information used to indicate a mapping manner of antenna ports of the M reference signal resources to the N antenna ports. The method according to claim 5, characterized in that The mapping manner is any one of the following: antenna ports of each of the M reference signal resources are sequentially mapped to the N antenna ports in a manner of first vertical direction and then horizontal direction, and antenna ports of a same reference signal resource are distributed in a same antenna port block; antenna ports of each of the M reference signal resources are sequentially mapped to the N antenna ports in a manner of first horizontal direction and then vertical direction, and antenna ports of a same reference signal resource are distributed in a same antenna port block; antenna ports of each of the M reference signal resources are sequentially mapped to antenna ports in a manner of first vertical direction M2 reference signal resources of antenna ports and then horizontal direction M1 reference signal resources of antenna ports cross-mapping; antenna ports of each of the M reference signal resources are sequentially mapped to antenna ports in a manner of first vertical direction M2 reference signal resources of antenna ports cross-mapping and then horizontal direction M1 reference signal resources of antenna ports cross-mapping; wherein M1 and M2 are positive integers. The method according to claim 5 or 6, characterized in that The third information comprises the indication information used to indicate the mapping manner. The method according to any one of claims 5 to 7, characterized in that The method further comprises: receiving fourth information, the fourth information being used to indicate reference signal resources of the M reference signal resources for measuring the part of the N antenna ports; wherein the measuring of the reference signals of the part of the N antenna ports comprises: measuring the reference signals of the part of the N antenna ports according to the fourth information. The method according to any one of claims 1 to 8, characterized in that The method further comprises: sending fifth information, the fifth information being used to indicate the channel measurement results of the N antenna ports. A communication method characterized by comprising: The method is applied to a network device, and the method comprises: sending first information, the first information being used to determine a time delay on a first transmission path corresponding to a first antenna port, the first transmission path passing through a first scatterer, the first antenna port being one of N antenna ports of the network device, N being a positive integer; sending reference signals of the N antenna ports. The method of claim 10, wherein The first information is used to indicate one or more of the following: a position of the first scatterer, a time delay on the first transmission path corresponding to the first antenna port, and a time delay corresponding to a first angle of the first antenna port; wherein the first angle comprises a departure angle and / or an arrival angle corresponding to the first transmission path. The method according to claim 10 or 11, characterized in that The method further comprises: receiving second information, the second information being used to indicate a number of antenna ports supported by a terminal device for measurement. The method according to any one of claims 10 to 12, characterized in that The method further comprises: sending third information, the third information being used to indicate M reference signal resources corresponding to the N antenna ports, M being a positive integer; wherein the sending of the reference signals of the N antenna ports comprises: sending the reference signals of the N antenna ports through the M reference signal resources. The method of claim 13, wherein In the case where M is greater than 1, the method further comprises: sending indication information used to indicate a mapping manner of antenna ports of the M reference signal resources and the N antenna ports; wherein the sending of the reference signals of the N antenna ports comprises: sending the reference signals of the N antenna ports according to the mapping manner. The method of claim 14, wherein The mapping manner is any one of the following: antenna ports of each of the M reference signal resources are sequentially mapped to the N antenna ports in a manner of first vertical direction and then horizontal direction, and antenna ports of a same reference signal resource are distributed in a same antenna port block; antenna ports of each of the M reference signal resources are sequentially mapped to the N antenna ports in a manner of first horizontal direction and then vertical direction, and antenna ports of a same reference signal resource are distributed in a same antenna port block; antenna ports of each of the M reference signal resources are sequentially mapped to antenna ports in a manner of first vertical direction M2 reference signal resources of antenna ports and then horizontal direction M1 reference signal resources of antenna ports cross-mapping; antenna ports of each of the M reference signal resources are sequentially mapped to antenna ports in a manner of first vertical direction M2 reference signal resources of antenna ports cross-mapping and then horizontal direction M1 reference signal resources of antenna ports cross-mapping; wherein M1 and M2 are positive integers. The method according to claim 14 or 15, characterized in that The third information comprises the indication information used to indicate the mapping manner. The method according to any one of claims 14 to 16, characterized in that The method further comprises: sending fourth information, the fourth information being used to indicate reference signal resources of the M reference signal resources used to measure the part of the antenna ports. The method according to any one of claims 10 to 17, characterized in that The method further comprises: receiving fifth information, the fifth information being used to indicate channel measurement results of the N antenna ports. The method according to any one of claims 10 to 18, characterized in that The network device is an access network device, a distributed unit, or a centralized unit. A communication device characterized by comprising: The method further comprises: A module or unit for performing the method of any one of claims 1 to 19. A communication device characterized by comprising: comprising: a processor and a memory, the processor coupled to the memory, the memory for storing a computer program which, when executed by the processor, causes the apparatus to perform the method of any one of claims 1 to 19. A computer-readable storage medium, characterized by The computer readable storage medium has stored thereon a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 19. A computer program product, characterized in that comprising: a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 19. A chip characterized by comprising: a processor and a memory, the memory for storing a computer program, the processor for calling and running the computer program stored in the memory, so that the apparatus or device installed with the chip performs the method of any one of claims 1 to 19.

Images