Information reporting method and communication apparatus

Abstract

The present application provides an information reporting method and a communication apparatus. The method comprises: a first device receiving a first reference signal on a first frequency band; and sending a plurality of sets of first information associated with the first reference signal, the plurality of sets of first information being in one-to-one correspondence with a plurality of antenna port modes of the first device on the first frequency band. The present method helps prevent a second device from configuring data transmission parameters (such as modulation and coding scheme, and precoding) incorrectly on the basis of first information, thereby improving the data reception performance of the first device.

Description

An information reporting method and communication device

[0001] This application claims priority to Chinese Patent Application No. 202411045932.8, filed with the State Intellectual Property Office of China on July 31, 2024, entitled "An Information Reporting Method and Communication Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, and in particular to an information reporting method and communication device. Background Technology

[0003] Since the era of fourth-generation (4G) wireless communication systems, multiple-input-multiple-output (MIMO) technology has been one of the most watched technologies in physical layer communication. For example, when network devices use MIMO technology to send downlink data to terminals, they need to determine the transmission parameters of the downlink data, such as modulation and coding scheme (MCS) and precoding. These transmission parameters depend on the channel state information (CSI) reported by the terminal to the network device. However, in some scenarios, the network device may incorrectly set the downlink data transmission parameters (e.g., modulation and coding scheme and precoding) based on the CSI reported by the terminal, leading to a decrease in the terminal's downlink data reception performance. Summary of the Invention

[0004] This application provides an information reporting method and communication device, which helps to improve the data reception performance of the receiving end.

[0005] In a first aspect, embodiments of this application provide an information reporting method. Optionally, this method can be applied to a first device, such as the first device or a communication module / processing module within the first device, or a circuit or chip in the first device responsible for communication functions (such as a modem chip, also known as a baseband chip, or a system-on-a-chip (SoC) chip containing a modem core, or a system-in-package (SIP) chip), or a circuit or chip in the first device responsible for processing functions (such as a graphics processing unit (GPU)). The method includes: receiving a first reference signal in a first frequency band; and transmitting multiple sets of first information associated with the first reference signal, wherein the multiple sets of first information correspond one-to-one with multiple antenna port modes of the first device in the first frequency band.

[0006] Based on the method described in the first aspect, the first device can report multiple sets of first information associated with the first reference signal to the second device, and these multiple sets of first information correspond one-to-one with multiple antenna port modes of the first device in the first frequency band. In this way, the second device can subsequently select a set of first information from the multiple sets of first information that matches the antenna port mode used by the first device in the first frequency band when transmitting data, and transmit data based on the selected first information. Therefore, the method described in the first aspect helps to avoid errors in the second device's data transmission parameters (e.g., modulation coding and precoding) based on the first information, thereby improving the data reception performance of the first device.

[0007] In one possible embodiment, the multiple sets of first information include first information corresponding to a first antenna port mode and first information corresponding to a second antenna port mode; the first antenna port mode is a mode in which the first device uses only a dedicated antenna port in the first frequency band; the second antenna port mode is a mode in which the first device uses both a dedicated antenna port and a shared antenna port in the first frequency band; the shared antenna port is an antenna port shared by the first device in multiple frequency bands, including the first frequency band.

[0008] Based on this possible embodiment, when the antenna port mode of the first device can be switched between the first antenna port mode and the second antenna port mode, it is beneficial to avoid the second device setting the data transmission parameters incorrectly, which would affect the data reception performance of the first device.

[0009] In one possible embodiment, configuration information may also be received for configuring a first resource, which includes a first resource corresponding to a dedicated antenna port and a first resource corresponding to a shared antenna port; and a second reference signal may be transmitted on the first resource corresponding to the dedicated antenna port and / or the first resource corresponding to the shared antenna port based on the antenna port mode used in the first frequency band.

[0010] In one possible embodiment, the first resource corresponding to the dedicated antenna port and the first resource corresponding to the shared antenna port are located within a first resource set; wherein:

[0011] The first resource in the first resource set corresponds to a pre-agreed dedicated antenna port or a shared antenna port. This can save communication overhead. Alternatively, a first indication information can be received, indicating whether the first resource in the first resource set corresponds to a dedicated antenna port or a shared antenna port. This allows for more flexible configuration of the first resource.

[0012] In one possible embodiment, the first resource corresponding to the dedicated antenna port is located within a first resource set, and the first resource corresponding to the shared antenna port is located within a second resource set; the first set and the second set are associated; wherein:

[0013] The first resource in the first resource set corresponds to a dedicated antenna port, and the first resource in the second resource set corresponds to a shared antenna port, which is pre-agreed. This can save communication overhead. Alternatively, a second indication information can be received, indicating that the first resource in the first resource set corresponds to a dedicated antenna port, and the first resource in the second resource set corresponds to a shared antenna port. This allows for more flexible configuration of the first resource.

[0014] In one possible embodiment, a third indication message may also be sent, indicating the number of dedicated antenna ports and the number of shared antenna ports of the first device in the first frequency band.

[0015] Based on this possible embodiment, the second device can rationally allocate first resources to the first device based on the number of dedicated antenna ports and shared antenna ports of the first device in the first frequency band. Furthermore, based on this possible embodiment, the setting of the number of dedicated antenna ports and shared antenna ports of the first device in the first frequency band can be more flexible.

[0016] In one possible embodiment, a fourth indication message may also be sent, which indicates a target first information among multiple sets of first information.

[0017] Based on this possible embodiment, it is beneficial to ensure that the first information used by the second device to transmit data corresponds to the antenna port mode used by the first device in the first frequency band, thereby avoiding the second device from setting the data transmission parameters incorrectly based on the first information, and thus improving the data reception performance of the first device.

[0018] In one possible embodiment, a fifth indication message may also be received, which indicates a target first information among multiple sets of first information.

[0019] Based on this possible embodiment, it is beneficial to ensure that the first information used by the second device to transmit data corresponds to the antenna port mode used by the first device in the first frequency band, thereby avoiding the second device from setting the data transmission parameters incorrectly based on the first information, and thus improving the data reception performance of the first device.

[0020] In one possible embodiment, a sixth indication message is sent, which indicates the antenna port mode used by the first device in the first frequency band.

[0021] Based on this possible embodiment, it is beneficial to ensure that the first information used by the second device to transmit data corresponds to the antenna port mode used by the first device in the first frequency band, thereby avoiding the second device from setting the data transmission parameters incorrectly based on the first information, and thus improving the data reception performance of the first device.

[0022] In one possible embodiment, a seventh indication information is received, which indicates the antenna port mode used by the first device in the first frequency band.

[0023] Based on this possible embodiment, it is beneficial to ensure that the first information used by the second device to transmit data corresponds to the antenna port mode used by the first device in the first frequency band, thereby avoiding the second device from setting the data transmission parameters incorrectly based on the first information, and thus improving the data reception performance of the first device.

[0024] In one possible embodiment, a third indication message and an eighth indication message are sent to the second device. The third indication message indicates the number of dedicated antenna ports and the number of shared antenna ports of the first device in a first frequency band. The eighth indication message indicates multiple frequency bands sharing the shared antenna ports.

[0025] Based on this possible embodiment, it is beneficial to ensure that the first information used by the second device to transmit data corresponds to the antenna port mode used by the first device in the first frequency band, thereby avoiding the second device from setting the data transmission parameters incorrectly based on the first information, and thus improving the data reception performance of the first device.

[0026] Secondly, embodiments of this application provide an information reporting method. Optionally, this method can be applied to a second device side, such as a second device on the second device side, a module (e.g., a circuit, chip, or chip system) in the second device, or a logic node, logic module, or software that can implement all or part of the functions of the second device. The method includes: transmitting a first reference signal in a first frequency band; receiving multiple sets of first information associated with the first reference signal from a first device, wherein the multiple sets of first information correspond one-to-one with multiple antenna port modes of the first device in the first frequency band.

[0027] In one possible embodiment, the multiple sets of first information include first information corresponding to a first antenna port mode and first information corresponding to a second antenna port mode; the first antenna port mode is a mode in which the first device uses only a dedicated antenna port in the first frequency band; the second antenna port mode is a mode in which the first device uses both a dedicated antenna port and a shared antenna port in the first frequency band; the shared antenna port is an antenna port shared by the first device in multiple frequency bands, including the first frequency band.

[0028] In one possible embodiment, configuration information may also be sent to the first device to configure a first resource, which includes a first resource corresponding to a dedicated antenna port and a first resource corresponding to a shared antenna port; based on the antenna port mode used by the first device in the first frequency band, a second reference signal from the first device may be received on the first resource corresponding to the dedicated antenna port and / or the first resource corresponding to the shared antenna port.

[0029] In one possible embodiment, the first resource corresponding to the dedicated antenna port and the first resource corresponding to the shared antenna port are located within a first resource set; wherein:

[0030] The first resource in the first resource set corresponds to a dedicated antenna port or a shared antenna port that is pre-agreed; or, a first indication message may be sent to the first device, which indicates that the first resource in the first resource set corresponds to a dedicated antenna port or a shared antenna port.

[0031] In one possible embodiment, the first resource corresponding to the dedicated antenna port is located within a first resource set, and the first resource corresponding to the shared antenna port is located within a second resource set; the first set and the second set are associated; wherein:

[0032] The first resource in the first resource set corresponds to a dedicated antenna port, and the first resource in the second resource set corresponds to a shared antenna port, which is pre-agreed; or, a second indication information may be sent to the first device, which indicates that the first resource in the first resource set corresponds to a dedicated antenna port and the first resource in the second resource set corresponds to a shared antenna port.

[0033] In one possible embodiment, the configuration information is determined based on the number of dedicated antenna ports and the number of shared antenna ports of the first device in the first frequency band.

[0034] In one possible embodiment, a third indication message may also be received from the first device, which indicates the number of dedicated antenna ports and the number of shared antenna ports of the first device in the first frequency band.

[0035] In one possible embodiment, a fourth indication information from the first device may also be received, which indicates a target first information among multiple sets of first information.

[0036] In one possible embodiment, a fifth indication message may also be sent to the first device, the fifth indication message indicating a target first information among multiple sets of first information.

[0037] In one possible embodiment, a sixth indication information is received, which indicates the antenna port mode used by the first device in the first frequency band.

[0038] In one possible embodiment, a seventh indication message is sent, which indicates the antenna port mode used by the first device in the first frequency band.

[0039] In one possible embodiment, the antenna port mode used by the first device in the first frequency band is determined based on the number of dedicated antenna ports of the first device in the first frequency band, the number of shared antenna ports, and the multiple frequency bands sharing the shared antenna ports.

[0040] In one possible embodiment, a third indication message and an eighth indication message are received. The third indication message indicates the number of dedicated antenna ports and the number of shared antenna ports of the first device in a first frequency band. The eighth indication message indicates multiple frequency bands sharing the shared antenna ports.

[0041] The beneficial effects in the second aspect can be found in the beneficial effects in the first aspect, and will not be repeated here.

[0042] Thirdly, this application provides a communication device that has the functions of implementing the first or second aspect described above. For example, the communication device includes modules, units, or means corresponding to the operations involved in the first or second aspect described above. These modules, units, or means can be implemented by software, hardware, or a combination of software and hardware.

[0043] Fourthly, this application provides a communication device including an interface circuit and one or more processors. The one or more processors are coupled to a memory. The memory stores part or all of the necessary computer programs or instructions for implementing the functions described in the first or second aspect. The one or more processors can execute the computer programs or instructions, which, when executed, cause the communication device to implement the methods in any possible design or implementation of the first or second aspect. The interface circuit is used to implement the communication functions within the communication device and / or the communication functions between the communication device and other devices or components.

[0044] In one possible design, the processor is used to communicate with other devices or components through the interface circuit.

[0045] In one possible design, the communication device may also include the memory.

[0046] The aforementioned communication device may be a first device, or a communication / processing module within the first device, or a chip within the first device responsible for communication functions, such as a modem chip (also known as a baseband chip), or a SoC or SIP chip containing a modem module, or a circuit or chip within the first device responsible for processing functions (such as a GPU). Alternatively, the aforementioned communication device may be a second device, or a module within the second device (e.g., a circuit, chip, or chip system), or a logic node, logic module, or software capable of implementing all or part of the functions of the second device.

[0047] Fifthly, this application provides a communication system including a first device and a second device. The first device can perform the method described in the first aspect, and the second device can perform the method described in the second aspect.

[0048] Sixthly, this application provides a computer-readable storage medium storing computer-readable instructions that, when read and executed by a computer, cause the computer to perform any of the possible designs in the first or second aspect described above.

[0049] In a seventh aspect, this application provides a computer program product that, when read and executed by a computer, causes the computer to perform any of the possible design methods of the first or second aspect described above. Attached Figure Description

[0050] Figure 1 is a schematic diagram of the architecture of a communication system 10 provided in an embodiment of this application;

[0051] Figure 2 is a schematic diagram of the shared antenna port provided in an embodiment of this application;

[0052] Figure 3 is a schematic diagram of the process of a terminal receiving downlink data in the FDD band;

[0053] Figure 4 is a schematic diagram of the process of a terminal receiving downlink data in the TDD band;

[0054] Figure 5 is a flowchart illustrating an information reporting method provided in an embodiment of this application;

[0055] Figure 6 is a schematic diagram of an antenna port provided in an embodiment of this application;

[0056] Figure 7 is a flowchart illustrating another information reporting method provided in an embodiment of this application;

[0057] Figure 8 is a possible exemplary block diagram of the communication device involved in the embodiments of this application;

[0058] Figure 9 is a schematic diagram of the structure of a first device 900 provided in an embodiment of this application. Detailed Implementation

[0059] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0060] The terms "first" and "second," etc., used in the specification, claims, and drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0061] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0062] In this application, "at least one (item)" means one or more, "more than one" means two or more, "at least two (items)" means two or three or more, and "and / or" is used to describe the relationship between related objects, indicating that there can be three relationships. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0063] In this application, "sending information" can be understood as one device sending information to another device, or it can also be understood as one logical module within a device sending information to another logical module. For example, "network device sending information" can be understood as a network device sending information to another device (such as a terminal), or it can be understood as logical module 1 in the network device sending information to logical module 2 in the network device.

[0064] In this application, "receiving information" can be understood as one device receiving information from another device, or it can also be understood as a logical module within a device receiving information from another logical module. For example, "network device receiving information" can be understood as a network device receiving information from another device (such as a terminal), or it can be understood as logical module 1 in the network device receiving information from logical module 2 in the network device.

[0065] In this application, phrases such as "sending information to... (e.g., a terminal)" or related illustrations in the accompanying drawings can be understood as indicating that the destination of the information is a terminal. This can include sending information directly or indirectly to a terminal. Similarly, phrases such as "receiving information from... (e.g., a terminal)," "receiving information from... (e.g., a terminal)," or "receiving information sent by (e.g., a terminal)," or related illustrations in the accompanying drawings, can be understood as indicating that the source of the information is a terminal. This can include receiving information directly or indirectly from a terminal. Information may undergo necessary processing between the source and destination, such as format changes, but the destination can understand the valid information from the source. Similar expressions in this application can be interpreted similarly and will not be elaborated further here.

[0066] To better understand the embodiments of this application, the system architecture involved in the embodiments of this application will be described first below:

[0067] This application's embodiments can be applied to long-term evolution (LTE) systems, 5th generation mobile communication (5G) systems, 6th generation mobile communication (6G) systems, and other communication systems evolving after 5G, as well as satellite communication and short-range wireless communication systems. The wireless communication systems mentioned in this application's embodiments include, but are not limited to, the three major application scenarios of 5G / 6G mobile communication systems: enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (URLLC), and massive machine-type communication (mMTC), long-range (LoRa) systems, or vehicle-to-everything (V2X) systems. The wireless communication system may include one or more network devices and one or more terminal devices.

[0068] In this embodiment, the communication system includes a first device and a second device. The first device can be a terminal or other devices; the second device can be a network device or other devices, such as other communication devices with control and scheduling functions. The following description uses the example of the first device being a terminal and the second device being a radio access network (RAN) node, which should not be construed as limiting the scope of protection of this invention. The second device can be a single RAN node or multiple cooperating RAN nodes in an operator-deployed RAN network; this embodiment does not impose such limitations.

[0069] Figure 1 is a schematic diagram of the architecture of a communication system 10 provided in an embodiment of this application. As shown in Figure 1, the communication system 10 includes a RAN 100, wherein the RAN 100 includes at least one RAN node (110a and 110b in Figure 1, collectively referred to as 110), and may also include at least one terminal (120a-120j in Figure 1, collectively referred to as 120). The RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 1). The terminal 120 is wirelessly connected to the RAN node 110. Terminals and RAN nodes can be interconnected via wired or wireless means. The communication system 10 may also include a core network 200. The RAN node 110 is connected to the core network 200 via wireless or wired means. The core network equipment in the core network 200 and the RAN node 110 in the RAN 100 may be independent and different physical devices, or they may be the same physical device integrating the logical functions of the core network equipment and the logical functions of the RAN node. The communication system 10 may also include a data network (DN) 300.

[0070] RAN100 can be an evolved universal terrestrial radio access (E-UTRA) system, a new radio (NR) system, a 6th generation (6G) radio access system, or a future radio access system as defined in the 3rd generation partnership project (3GPP). RAN100 can also include two or more of the above-mentioned different radio access systems. RAN100 can also be an open RAN (O-RAN). RAN can also be referred to as an access network (AN).

[0071] RAN nodes, also known as network devices, radio access network devices, access network devices, RAN entities, or access nodes, are used to help terminals access communication systems wirelessly. In one application scenario, an RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a 5G mobile communication system, a next-generation base station in a 6G mobile communication system, or a base station in a future mobile communication system. RAN nodes can be macro base stations (as shown in Figure 1, 110a), micro base stations or indoor stations (as shown in Figure 1, 110b), relay nodes, or donor nodes.

[0072] In another application scenario, multiple RAN nodes can collaborate to help terminals achieve wireless access, with different RAN nodes implementing different functions of the base station. For example, a RAN node can be a central unit (CU), a distributed unit (DU), or a radio unit (RU). Here, the CU performs the functions of the base station's Radio Resource Control (RRC) and Packet Data Convergence Protocol (PDCP), and can also perform the functions of the Service Data Adaptation Protocol (SDAP). The DU performs the functions of the base station's Radio Link Control (RANC) and Medium Access Control (MAC) layers, and can also perform some or all of the physical layer functions. For specific descriptions of these protocol layers, refer to the relevant 3GPP technical specifications. The RU can be used to implement radio frequency signal transmission and reception. The CU and DU can be two independent RAN nodes or integrated into the same RAN node, such as within a baseband unit (BBU). The RU can be included in radio frequency equipment, such as in a remote radio unit (RRU) or an active antenna unit (AAU). The CU can be further divided into two types of RAN nodes: CU-control plane and CU-user plane.

[0073] In different systems, RAN nodes may have different names. For example, in an O-RAN system, a CU can be called an open CU (O-CU), a DU can be called an open DU (O-DU), and an RU can be called an open RU (O-RU). The RAN nodes in the embodiments of this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules. For example, a RAN node can be a server loaded with the corresponding software modules. The embodiments of this application do not limit the specific technology or device form used in the RAN nodes. For ease of description, a base station is used as an example of a RAN node in the following description.

[0074] A terminal is a device with wireless transceiver capabilities, capable of sending signals to or receiving signals from RAN nodes. Terminals can also be referred to as terminal equipment, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, etc. Terminals can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, aircraft, ships, robots, robotic arms, smart home devices, etc. The embodiments of this application do not limit the specific technology or device form used in the terminal.

[0075] RAN nodes and terminals can be fixed or mobile. RAN nodes and terminals can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can be deployed on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of RAN nodes and terminals.

[0076] The roles of RAN nodes and terminals can be relative. For example, the helicopter or drone 120i in Figure 1 can be configured as a mobile RAN node. For terminals 120j that access the radio access network 100 through 120i, terminal 120i is a RAN node; however, for RAN node 110a, 120i is a terminal, meaning that 110a and 120i communicate via a radio interface protocol. Of course, 110a and 120i can also communicate via a RAN node-to-RAN node interface protocol. In this case, 120i is also a RAN node relative to 110a. Therefore, both RAN nodes and terminals can be collectively referred to as communication devices. 110a and 110b in Figure 1 can be called communication devices with RAN node functions, and 120a-120j in Figure 1 can be called communication devices with terminal functions.

[0077] Communication between RAN nodes and terminals, between RAN nodes, and between terminals can be conducted using licensed spectrum, unlicensed spectrum, or both simultaneously. Communication can be conducted using spectrum below 6 GHz, spectrum above 6 GHz, or both simultaneously. The embodiments of this application do not limit the spectrum resources used for wireless communication.

[0078] In the embodiments of this application, the functions of the RAN node can be executed by modules (such as chips) within the RAN node, or by a control subsystem that includes RAN node functions. This control subsystem, including RAN node functions, can be a control center in the aforementioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. Similarly, the functions of the terminal can be executed by modules (such as chips or modems) within the terminal, or by a device that includes terminal functions.

[0079] In this application, the RAN node sends downlink signals or downlink information to the terminal, with the downlink information carried on the downlink channel; the terminal sends uplink signals or uplink information to the RAN node, with the uplink information carried on the uplink channel. To communicate with the RAN node, the terminal needs to establish a radio connection on a cell controlled by the RAN node. The cell with which the terminal has established a radio connection is called the terminal's serving cell. When the terminal communicates with this serving cell, it is also susceptible to interference from signals from neighboring cells.

[0080] In the embodiments of this application, the time-domain symbol can be an orthogonal frequency division multiplexing (OFDM) symbol or a discrete Fourier transform-spread-OFDM (DFT-s-OFDM) symbol. Unless otherwise specified, the symbols in the embodiments of this application refer to time-domain symbols.

[0081] It is understood that in the embodiments of this application, PDSCH and PDCCH are just examples of downlink data channel and downlink control channel, respectively. In different systems and different scenarios, data channel and control channel may have different names, and the embodiments of this application do not limit this.

[0082] For ease of description, the embodiments of this application will be described below using the RAN node as an example of a network device.

[0083] The following explanations of some terms used in the embodiments of this application are provided to facilitate understanding by those skilled in the art. These explanations are for illustrative purposes only and should not be construed as a disclosure or specific limitation of the technical solution of this application.

[0084] I. Antenna Port

[0085] In this embodiment, the antenna port can be used to receive data or transmit data. Optionally, when the antenna port is used to receive data, it can also be referred to as a receiving antenna, a receiving channel, or a receiving antenna port. Optionally, when the antenna port is used to transmit data, it can also be referred to as a transmitting antenna, a transmitting channel, or a transmitting antenna port. Optionally, the antenna port in this embodiment can be understood as an antenna port on the terminal side.

[0086] II. Shared antenna port

[0087] In this embodiment, the shared antenna port can be used to receive data or transmit data. Optionally, when the shared antenna port is used to receive data, it can also be referred to as a shared receiving antenna, a shared receiving channel, or a shared receiving antenna port. Optionally, when the shared antenna port is used to transmit data, it can also be referred to as a shared transmitting antenna, a shared transmitting channel, or a shared transmitting antenna port.

[0088] Optionally, the shared antenna port in this embodiment can be understood as a shared antenna port on the terminal side. For example, in communication systems, it is generally easier to deploy more antenna ports on network devices because network devices have no size limitations and are not concerned about power consumption. However, deploying multiple antenna ports on a terminal will face significant challenges. On the one hand, the small size of the terminal and insufficient isolation between multiple antenna ports may introduce non-ideal factors such as antenna port mutual coupling. On the other hand, the terminal needs to strictly control power consumption, and the deployment of multiple antenna ports may increase the terminal's power consumption. For fixed wireless access (FWA) type terminals, the standard has agreed to support receiving data through 8 antenna ports on some frequency bands, i.e., 8R. However, whether handheld terminals (such as smartphones) support 6R is currently inconclusive. Considering the future evolution of handheld terminal form factors, a larger number of antenna ports, such as 8R, may be supported to further improve the speed. However, deploying 8 antenna ports on each frequency band will pose significant challenges in terms of antenna port isolation, hardware cost, and power consumption.

[0089] Therefore, it is possible to consider allowing multiple frequency bands to share the same one or more antenna ports, meaning the same antenna port can be shared across multiple frequency bands. For example, for frequency bands 1, 2, and 3, if 8 antenna ports are deployed on each band, the terminal would require approximately 24 antenna ports in total. As shown in Figure 2, if 4 dedicated antenna ports are deployed on each band, plus 4 antenna ports that can be shared across the 3 bands, the terminal would only need to deploy 16 antenna ports in total.

[0090] III. Dedicated Antenna Port

[0091] In this embodiment, the dedicated antenna port can be used to receive or transmit data. Optionally, when the dedicated antenna port is used to receive data, it can also be referred to as a dedicated receiving antenna, a dedicated receiving channel, or a dedicated receiving antenna port. Optionally, when the dedicated antenna port is used to transmit data, it can also be referred to as a dedicated transmitting antenna, a dedicated transmitting channel, or a dedicated transmitting antenna port. Optionally, the dedicated antenna port in this embodiment can be understood as a dedicated antenna port on the terminal side.

[0092] Dedicated antenna ports for a frequency band can be understood as antenna ports used only for that specific frequency band. For example, as shown in Figure 2, the four dedicated antenna ports for frequency band 1 are antenna ports used by the terminal only for frequency band 1. The four dedicated antenna ports for frequency band 2 are antenna ports used by the terminal only for frequency band 2. The four dedicated antenna ports for frequency band 3 are antenna ports used by the terminal only for frequency band 3.

[0093] IV. Antenna Port Mode

[0094] In this embodiment, the antenna port mode represents the antenna port used by the terminal in a certain frequency band. The antenna port mode can be divided into an antenna port mode for receiving data and an antenna port mode for transmitting data. Optionally, the antenna port mode for receiving data can also be called a receiving antenna mode, a receiving channel mode, or a receiving antenna port mode. Optionally, the antenna port mode for transmitting data can also be called a transmitting antenna mode, a transmitting channel mode, or a transmitting antenna port mode.

[0095] Optionally, the antenna port mode in this embodiment can be understood as the antenna port mode on the terminal side. For example, in one possible implementation, the terminal has antenna port mode 1 and antenna port mode 2. Antenna port mode 1 is a mode in which the terminal uses 4 dedicated antenna ports in a certain frequency band, and antenna port mode 2 is a mode in which the terminal uses 8 dedicated antenna ports in a certain frequency band. As another possible implementation, the terminal has antenna port mode 1 and antenna port mode 2. Antenna port mode 1 is a mode in which the terminal uses only dedicated antenna ports in a certain frequency band, and antenna port mode 2 is a mode in which the terminal uses both dedicated antenna ports and shared antenna ports in a certain frequency band.

[0096] Downlink data can be transmitted in either the frequency division duplex (FDD) or time division duplex (TDD) band. The following sections describe the processes for a terminal receiving downlink data in the FDD and TDD bands, respectively:

[0097] Please refer to Figure 3, which is a schematic diagram of the process of a terminal receiving downlink data in the FDD band, wherein:

[0098] 301. Network devices send channel state information reference signals (CSI-RS) to terminals.

[0099] 302. The terminal receives the CSI-RS and determines the channel state information (CSI) based on the measurement results of the CSI-RS.

[0100] For example, CSI may include, but is not limited to, one or more of the following: channel quality indicator (CQI), rank indicator (RI), precoding matrix indicator (PMI), and layer indicator (LI).

[0101] 303. The terminal sends a CSI to the network device. Accordingly, the network device can receive the CSI.

[0102] 304. Network devices send downlink data based on this CSI.

[0103] For example, network devices can determine downlink transmission parameters based on CSI. These parameters may include one or more of the following: downlink data modulation and coding scheme (MCS), downlink data stream number, and downlink data precoding matrix. For example, network devices can determine the downlink data MCS based on CQI. Network devices can determine the downlink data stream number based on RI. Network devices can determine the downlink data precoding matrix based on PMI. Network devices can determine the layer with the best channel quality based on LI.

[0104] The network device may send one or more of the aforementioned downlink transmission parameters to the terminal. Accordingly, the terminal may receive the data. The network device may send downlink data based on these downlink transmission parameters. Accordingly, the terminal may receive the downlink data based on one or more of these downlink transmission parameters. For example, the downlink data may be a physical downlink shared channel (PDSCH).

[0105] Please refer to Figure 4, which is a schematic diagram of the process of a terminal receiving downlink data in the TDD band, wherein:

[0106] 401. The terminal sends the number of antenna ports x used for transmitting data and the number of antenna ports y used for receiving data in the current TDD frequency band to the network device, i.e., (x)T(y)R. Accordingly, the network device can receive the number of antenna ports x used for transmitting data and the number of antenna ports y used for receiving data in the current TDD frequency band from the terminal.

[0107] 402. The network device configures a sounding reference signal (SRS) resource set for the terminal based on the number of antenna ports x used for transmitting data and the number of antenna ports y used for receiving data in the current TDD frequency band, in order to perform channel estimation.

[0108] For example, an SRS resource set may include (y divided by x) x-port SRS resources.

[0109] 403. The terminal sends SRS based on the configured SRS resource set.

[0110] 404. The network device receives SRS on the SRS resource and determines the precoding matrix.

[0111] 405. Network devices send CSI-RS to terminals.

[0112] 406. The terminal receives the CSI-RS and determines the CSI based on the measurement results of the CSI-RS.

[0113] For example, CSI may include one or more of CQI, RI, PMI, and LI.

[0114] 407. The terminal sends a CSI to the network device. Accordingly, the network device can receive the CSI.

[0115] 408. Network devices send downlink data based on this CSI.

[0116] The specific implementation of step 408 can be found in the description under step 304, and will not be repeated here.

[0117] In some scenarios, the antenna port pattern used by a terminal for receiving data on a certain frequency band may change over time. This can lead to a mismatch between the antenna port pattern reported by the terminal's CSI and the antenna port pattern used when transmitting downlink data. Consequently, the network device may incorrectly set the downlink data transmission parameters (such as modulation and coding schemes and precoding) based on the CSI, thus affecting the terminal's downlink data reception performance. For example, in scenarios 1 and 2 below, the network device may incorrectly set the downlink data transmission parameters based on the CSI information.

[0118] Scenario 1: To save terminal power consumption, the number of antenna ports used by the terminal for receiving data can be dynamically adjusted according to service conditions. For example, when the service rate is high, the terminal uses more antenna ports for reception. When the service rate is low, the terminal shuts down some antenna ports to save power. Therefore, the antenna port mode used by the terminal for receiving data on a certain frequency band may change over time depending on service conditions. In this case, a mismatch may occur between the antenna port mode corresponding to the CSI reported by the terminal and the antenna port mode used by the terminal when sending downlink data. For example, the terminal may use a large number of antenna ports when calculating the CSI, resulting in an optimistic estimate of the CSI, and the network device sends downlink data based on this optimistic CSI. However, the terminal may actually use fewer antenna ports when sending downlink data (e.g., the terminal shuts down some antenna ports to save power), causing the terminal to be unable to decode the downlink data sent by the network device, or leading to an increased block error rate, thus affecting the terminal's downlink data reception performance.

[0119] Scenario 2: A terminal shares one or more antenna ports across multiple frequency bands, preventing it from simultaneously using the shared antenna ports to receive data on all three bands. For example, as shown in Figure 2, each of the three frequency bands (Band 1, Band 2, and Band 3) has four dedicated antenna ports, which are shared among them. Due to the significant distance between Bands 1, 2, and 3, the terminal cannot simultaneously use the shared antenna ports to receive data on all three bands. For instance, when the terminal uses a shared antenna port to receive data on Band 1, it cannot use it on Bands 2 or 3. In other words, the antenna port mode used by the terminal for receiving data on a particular frequency band may change over time depending on network device scheduling. This can lead to a mismatch between the terminal antenna port mode reported by the terminal's CSI and the antenna port mode used when transmitting downlink data. For example, if a terminal uses a large number of antenna ports when calculating the CSI (e.g., the terminal can use dedicated antenna ports and shared antenna ports to receive data), the terminal's estimate of the CSI will be optimistic, and the network device will send downlink data based on this optimistic CSI. However, if the terminal actually uses fewer antenna ports when sending downlink data (e.g., the terminal cannot use shared antenna ports to receive data), the terminal may be unable to decode the downlink data sent by the network device, or the block error rate may increase, thus affecting the terminal's downlink data reception performance.

[0120] To improve the data reception performance of the first device, this application provides an information reporting method and a communication device. The information reporting method and communication device will be further described below with reference to the accompanying drawings. It is understood that this application uses the first device and the second device as examples to illustrate the execution of the interaction, but this application does not limit the execution subject of the interaction. For example, the method executed by the first device in this application can also be implemented by a communication / processing module in the first device or a circuit or chip in the first device responsible for communication / processing functions. The method executed by the second device in this application can also be implemented by a module (e.g., a circuit, chip, or chip system) in the second device, or a logical node, logical module, or software that can implement all or part of the functions of the second device. Optionally, the first device can be a terminal, and the second device can be a network device. Alternatively, the first device and the second device can be other devices, which is not limited in this application. The numbering order of the steps in the following embodiments indicates a logical order, not a chronological order of execution.

[0121] Please refer to Figure 5, which is a flowchart illustrating an information reporting method provided in an embodiment of this application, wherein:

[0122] 501. The second device sends a first reference signal to the first device in the first frequency band.

[0123] In this embodiment, the first frequency band can be any frequency band. For example, the first frequency band can be the N41 frequency band, or the first frequency band can be the N77 / N78 frequency band, or the first frequency band can be the N79 frequency band, or the first frequency band can be other frequency bands. This embodiment does not limit the frequency band.

[0124] In this embodiment, the first reference signal may be a CSI-RS. Alternatively, the first reference signal may also be a cell reference signal (CRS), a demodulation reference signal (DMRS), a multicast broadcast single frequency network (MBSFN) reference signal, or a position reference signal (P-RS), etc. Alternatively, the first reference signal may be other reference signals; this embodiment does not limit the specific reference signal.

[0125] 502. The first device receives the first reference signal in the first frequency band.

[0126] 503. The first device transmits multiple sets of first information associated with the first reference signal, wherein each set of first information corresponds one-to-one with a multiple antenna port mode of the first device in the first frequency band. Accordingly, the second device can receive the multiple sets of first information associated with the first reference signal.

[0127] Optionally, the first information can be information used to indicate the channel state. For example, the first information can be CSI. Optionally, CSI may include, but is not limited to, one or more of the following: CQI, RI, PMI, LI. Alternatively, the first information can also be other channel state information, which is not limited in the embodiments of this application.

[0128] Optionally, the multiple sets of first information associated with the first reference signal can also be understood as multiple sets of first information associated with the resource index of the first reference signal. Optionally, the resource index of the first reference signal can be a CSI-RS resource ID (CRI).

[0129] Optionally, multiple sets of first information are associated with the first reference signal, which can be understood as the multiple sets of first information being measured based on the first reference signal.

[0130] Optionally, the antenna port mode corresponding to the first information is the antenna port mode of the first device for receiving data. Optionally, the antenna port mode corresponding to the first information can also be called a receiving antenna mode, antenna port mode, or receiving antenna port mode, etc., and this application embodiment does not limit this. The first device may or may not have a shared antenna port on the first frequency band, and this application embodiment does not limit this.

[0131] Optionally, after receiving the multiple sets of first information, the second device can send data to the first device in the first frequency band based on the target first information in the multiple sets of first information. The target first information is the first information corresponding to the antenna port mode used by the first device in the first frequency band. Accordingly, the first device can receive the data. For example, the data can be a PDSCH. Optionally, the antenna port mode used by the first device in the first frequency band can be understood as the antenna port mode used by the first device to receive data in the first frequency band.

[0132] In other words, the target first information is the first information corresponding to the antenna port mode used by the first device in the first frequency band when the second device transmits data. That is, after receiving multiple sets of first information, the second device can select one set of first information that matches the antenna port mode used by the first device in the first frequency band when transmitting data, and transmit data based on the selected first information.

[0133] Optionally, the specific implementation of the second device sending data to the first device based on the target first information from the multiple sets of first information is as follows: the second device sends transmission parameters to the first device; the second device sends data based on the transmission parameters. Correspondingly, the first device can receive the transmission parameters and receive the data based on the transmission parameters. For example, the transmission parameters may include one or more of the following: the MCS of the data, the number of data streams, the precoding matrix of the data, etc. For example, the second device can determine the MCS of the data based on CQI. The second device can determine the number of data streams based on RI. The second device can determine the precoding matrix of the data based on PMI. The second device can determine the layer with the largest equivalent channel gain based on LI.

[0134] For example, consider a device that does not have a shared antenna port in the first frequency band, with CSI-RS as the first reference signal. As shown in Figure 6, the first device has eight antenna ports in frequency bands 1 through 3. Taking frequency band 1 as an example, the first device has antenna port mode 1 and antenna port mode 2 in frequency band 1. The antenna port mode of the first device can be switched between antenna port mode 1 and antenna port mode 2. For example, optionally, the second device can notify the first device to switch between antenna port mode 1 and antenna port mode 2 according to service requirements, or the first device itself can switch between antenna port mode 1 and antenna port mode 2 according to service requirements. Antenna port mode 1 is the mode in which the first device uses four antenna ports to receive data in frequency band 1, and antenna port mode 2 is the mode in which the first device uses eight antenna ports to receive data in frequency band 1.

[0135] The second device transmits CSI-RS on frequency band 1. The first device receives CSI-RS on frequency band 1, obtains first information 1 and first information 2, and reports first information 1 and first information 2 to the second device. First information 1 corresponds to antenna port mode 1 of the first device on frequency band 1, and first information 2 corresponds to antenna port mode 2 of the first device on frequency band 1. That is, first information 1 is determined by the first device through CSI-RS measurement using antenna port mode 1, and first information 2 is determined by the first device through CSI-RS measurement using antenna port mode 2. After receiving first information 1 and first information 2, the second device can subsequently select a suitable first information from first information 1 and first information 2 based on the antenna port mode used by the first device, and send data to the first device based on the selected first information. For example, if the first device receives data using antenna port mode 1 on frequency band 1 when the second device is sending data, then the second device sends data based on first information 1.

[0136] In one possible embodiment, the multiple sets of first information include at least first information corresponding to a first antenna port mode and first information corresponding to a second antenna port mode; the first antenna port mode is a mode in which the first device uses only a dedicated antenna port in the first frequency band; the second antenna port mode is a mode in which the first device uses both a dedicated antenna port and a shared antenna port in the first frequency band; the shared antenna port is an antenna port shared by the first device in multiple frequency bands, including the first frequency band.

[0137] Optionally, the first antenna port mode is a mode in which the first device uses only a dedicated antenna port in the first frequency band, which can be understood as the mode in which the first device uses only a dedicated antenna port to receive data in the first frequency band. Optionally, the second antenna port mode is a mode in which the first device uses both a dedicated antenna port and a shared antenna port in the first frequency band, which can be understood as the mode in which the first device uses both a dedicated antenna port and a shared antenna port to receive data in the first frequency band.

[0138] Optionally, the aforementioned multiple frequency bands may be N41, N77 / N78, N79, or may include other frequency bands; this application embodiment does not limit this.

[0139] In other words, when the first device has a shared antenna port on the first frequency band, the first device can report to the second device both the first information when the first device receives data using only a dedicated antenna port and the first information when the first device receives data using both a dedicated antenna port and a shared antenna port. This allows the second device to select one set of first information from multiple sets that matches the antenna port mode currently used by the first device on the first frequency band when transmitting data. Based on this possible embodiment, when the antenna port mode of the first device can switch between a first antenna port mode and a second antenna port mode, it helps to avoid the second device setting incorrect data transmission parameters, which could affect the first device's data reception performance. For example, when the first device shares one or more antenna ports on multiple frequency bands, and the first device cannot simultaneously use the shared antenna port to receive data on these multiple frequency bands, the antenna port mode of the first device can switch between a first antenna port mode and a second antenna port mode. Alternatively, the antenna port mode of the first device can switch between a first antenna port mode and a second antenna port mode depending on the service requirements.

[0140] For example, taking CSI-RS as the first reference signal. As shown in Figure 2, the first device has four dedicated antenna ports on frequency bands 1 through 3, and four shared antenna ports on frequency bands 1 through 3. Assume the second device transmits CSI-RS on frequency band 1. Since the first device cannot simultaneously use the shared antenna ports to receive data on frequency bands 1 through 3, the first device has antenna port mode 1 and antenna port mode 2 on frequency band 1. Antenna port mode 1 is the mode where the first device uses only the four dedicated antenna ports to receive data on frequency band 1, and antenna port mode 2 is the mode where the first device uses both the four dedicated antenna ports and the four shared antenna ports to receive data on frequency band 1.

[0141] If the first device cannot receive data using the shared antenna port on frequency band 1, the first device receives CSI-RS using antenna port mode 1 on frequency band 1, obtains a first piece of information, and reports it to the second device. This first piece of information corresponds to antenna port mode 1.

[0142] When the first device can receive data using a shared antenna port on frequency band 1, it receives CSI-RS on frequency band 1, obtains first information 1 and first information 2, and reports first information 1 and first information 2 to the second device. First information 1 corresponds to antenna port mode 1 of the first device on frequency band 1, and first information 2 corresponds to antenna port mode 2 of the first device on frequency band 1. After receiving first information 1 and first information 2, the second device can subsequently select a suitable first information from first information 1 and first information 2 based on the antenna port mode used by the first device, and send data to the first device based on the selected first information.

[0143] For example, consider a device with a shared antenna port in a first frequency band and a CSI-RS as the first reference signal. As shown in Figure 2, the first device has four dedicated antenna ports in frequency bands 1 through 3, and four shared antenna ports in frequency bands 1 through 3. Taking frequency band 1 as an example, the first device has antenna port mode 1 and antenna port mode 2 in frequency band 1. The antenna port mode of the first device can be switched between antenna port mode 1 and antenna port mode 2. For example, optionally, the second device can notify the first device to switch between antenna port mode 1 and antenna port mode 2 according to service requirements, or the first device itself can switch between antenna port mode 1 and antenna port mode 2 according to service requirements. Antenna port mode 1 is the mode in which the first device uses four dedicated antenna ports in frequency band 1, and antenna port mode 2 is the mode in which the first device uses four dedicated antenna ports and four shared antenna ports in frequency band 1.

[0144] The second device transmits CSI-RS on frequency band 1. The first device receives CSI-RS on frequency band 1, obtains first information 1 and first information 2, and reports first information 1 and first information 2 to the second device. First information 1 corresponds to antenna port mode 1 of the first device on frequency band 1, and first information 2 corresponds to antenna port mode 2 of the first device on frequency band 1. After receiving first information 1 and first information 2, the second device can subsequently select a suitable first information from first information 1 and first information 2 based on the antenna port mode used by the first device, and send data to the first device based on the selected first information.

[0145] As mentioned earlier, since the antenna port mode used by the first device in the first frequency band may change over time, in order to avoid the second device setting incorrect data transmission parameters (such as modulation coding and precoding) based on the first information and to improve the data reception performance of the first device, in one possible embodiment, it is necessary to ensure that the first information used by the second device to transmit data corresponds to the antenna port mode used by the first device in the first frequency band. Several optional methods to ensure that the first information used by the second device to transmit data corresponds to the antenna port mode used by the first device in the first frequency band are described below:

[0146] Method 1: The first device sends a fourth indication message to the second device, which indicates the target first information among multiple sets of first information. Accordingly, the second device can receive the fourth indication message.

[0147] In other words, the first device can report target first information corresponding to the antenna port mode used by the first device in the first frequency band to the second device. The second device can then transmit data based on this target first information. Therefore, based on method 1, it is beneficial to ensure that the first information used by the second device to transmit data corresponds to the antenna port mode used by the first device in the first frequency band, thereby avoiding errors in the second device's data transmission parameter settings based on the first information, and thus improving the first device's data reception performance.

[0148] In one possible embodiment, the first device can send a fourth indication message to the second device when the antenna port mode used in the first frequency band changes. That is, the first device can proactively report the fourth indication message to the second device.

[0149] For example, as shown in Figure 6, the first device has eight antenna ports in frequency bands 1 through 3. The first device can switch its antenna port mode in frequency band 1 between antenna port mode 1 and antenna port mode 2 based on service requirements or power-saving needs. Antenna port mode 1 is the mode where the first device uses four antenna ports to receive data in frequency band 1, while antenna port mode 2 is the mode where the first device uses eight antenna ports to receive data in frequency band 1.

[0150] The second device transmits CSI-RS on frequency band 1. The first device receives CSI-RS on frequency band 1, obtains first information 1 and first information 2, and reports first information 1 and first information 2 to the second device. First information 1 corresponds to antenna port mode 1 of the first device on frequency band 1, and first information 2 corresponds to antenna port mode 2 of the first device on frequency band 1. After the first device reports first information 1 and first information 2, when the first device, based on service requirements or power saving needs, changes the number of antenna ports for receiving data on frequency band 1 from 8 to 4 (i.e., the first device switches the antenna port mode from antenna port mode 2 to antenna port mode 1), the first device actively sends a fourth indication message to the second device to indicate the first information 1 corresponding to antenna port mode 1. After receiving the fourth indication message, the second device can send data to the first device based on first information 1. Accordingly, the first device uses antenna port mode 1 to receive the data on frequency band 1.

[0151] For another example, as shown in Figure 2, the first device shares four antenna ports across frequency bands 1 through 3. The first device cannot simultaneously use the shared antenna ports to receive data across these multiple frequency bands. The second device transmits CSI-RS on frequency band 1. The first device receives CSI-RS on frequency band 1, obtaining first information 1 and first information 2, and reports first information 1 and first information 2 to the second device. First information 1 corresponds to antenna port mode 1 of the first device on frequency band 1, and first information 2 corresponds to antenna port mode 2 of the first device on frequency band 1. Antenna port mode 1 is the mode where the first device uses only four dedicated antenna ports to receive data on frequency band 1, while antenna port mode 2 is the mode where the first device uses both four dedicated antenna ports and four shared antenna ports to receive data on frequency band 1. After the first device reports the first information 1 and the first information 2, when the number of antenna ports on the first device in frequency band 1 changes from 8 to 4 (at which point the first device cannot use shared antenna ports on frequency band 1), that is, when the first device switches the antenna port mode from antenna port mode 2 to antenna port mode 1, it sends a fourth indication message to the second device to indicate the first information 1. After receiving the fourth indication message, the second device can send data to the first device based on the first information 1. Accordingly, the first device uses antenna port mode 1 in frequency band 1 to receive the data.

[0152] In another possible embodiment, the second device may first send an acquisition request to the first device to obtain target first information. Accordingly, the first device may receive the acquisition request. The first device may then send fourth indication information to the second device based on the acquisition request. That is, the second device may proactively trigger the first device to report the fourth indication information. For example, when data needs to be sent, the second device may send an acquisition request to the first device to obtain the fourth indication information, thereby learning the target first information, and then sending data according to the target first information.

[0153] In one possible embodiment, when the first device shares one or more antenna ports on multiple frequency bands (including the first frequency band), and the first device cannot simultaneously use the shared antenna ports to receive data on the multiple frequency bands, and when not all of the multiple frequency bands are deployed under the second device, the first device may send a fourth indication message to the second device. Alternatively, the first device may also send the fourth indication message to the second device when all of the multiple frequency bands are deployed under the second device; this embodiment of the application does not limit the scope of the invention.

[0154] In scenarios where a first device shares one or more antenna ports across multiple frequency bands, if the first device cannot simultaneously use the shared antenna ports across these multiple frequency bands, and these multiple frequency bands are not all deployed on a second device, then the second device may not know the antenna port pattern used by the first device on the first frequency band, and therefore cannot determine the target first information corresponding to the antenna port pattern used by the first device on the first frequency band. For example, as shown in Figure 2, assume that frequency bands 1 and 2 are deployed on a second device, and frequency band 3 is deployed on a third device. Since the first device cannot simultaneously use the shared antenna ports across these multiple frequency bands, if the first device uses four shared antenna ports on frequency band 3, then the first device cannot use shared antenna ports on frequency bands 1 and 2. Optionally, since the second and third devices may belong to different operators, the second device may not know that the first device is using four shared antenna ports on frequency band 3, and therefore may not know that the first device can only use four dedicated antenna ports on frequency bands 1 and 2. Consequently, the second device cannot determine the first information required to send data to the first device from frequency band 1 or frequency band 2. At this point, the first device can send a fourth instruction message to the second device so that the second device can accurately determine the first information required to send the data.

[0155] Optionally, the antenna port mode of the first device in the first frequency band can be pre-agreed, pre-defined by a protocol, or set at the factory, or the first device can report instruction information to the second device to indicate the antenna port mode of the first device in the first frequency band.

[0156] Optionally, when the first device sends multiple sets of first information, it can also indicate the antenna port mode corresponding to each set of first information. Optionally, the first device reporting the antenna port mode corresponding to each set of first information in the multiple sets of first information can be: reporting the identifier of the antenna port mode corresponding to each set of first information; or reporting the identifier of the available antenna ports in the antenna port mode corresponding to each set of first information; or reporting the identifier of the unavailable antenna ports in the antenna port mode corresponding to each set of first information; or reporting the number of available antenna ports in the antenna port mode corresponding to each set of first information; or reporting the number of unavailable antenna ports in the antenna port mode corresponding to each set of first information; or reporting whether the shared antenna ports of the first device in the first frequency band are available in the antenna port mode corresponding to each set of first information; or reporting the resource identifier of the second reference signal corresponding to the antenna ports that the first device can use in the first frequency band in the antenna port mode corresponding to each set of first information; or reporting the resource identifier of the second reference signal corresponding to the antenna ports that the first device cannot use in the first frequency band in the antenna port mode corresponding to each set of first information.

[0157] Alternatively, when the first device sends multiple sets of first information, it may not indicate the antenna port mode corresponding to each set of first information. For example, the antenna port mode corresponding to each set of multiple sets of first information may be pre-agreed; or, the second device may determine the antenna port mode corresponding to each set of multiple sets of first information based on certain preset methods / algorithms.

[0158] Method 2: The second device sends a fifth instruction message to the first device, which indicates the target first information among multiple sets of first information. Accordingly, the first device can receive the fifth instruction message.

[0159] In other words, after receiving multiple sets of first information, the second device can select an antenna port mode for the first device to use in the first frequency band and send a fifth indication message to the first device to indicate the target first information, which is the first information among the multiple sets of first information corresponding to the selected antenna port mode. After sending the fifth indication message, the second device can send data to the first device in the first frequency band based on the target first information. Correspondingly, after receiving the fifth indication message, the first device can use the antenna port mode corresponding to the target first information to receive data in the first frequency band. Therefore, based on method 2, it is beneficial to ensure that the first information used by the second device to send data corresponds to the antenna port mode used by the first device in the first frequency band, thereby avoiding errors in the second device's data transmission parameter settings based on the first information, and thus improving the data reception performance of the first device.

[0160] Optionally, the second device may send a fifth instruction message to the first device based on service requirements or power-saving needs. That is, the second device may select an antenna port mode in a first frequency band for the first device based on service requirements or power-saving needs, and indicate the target first information corresponding to the selected antenna port mode to the first device.

[0161] Alternatively, the second device may determine the target first information based on business conditions or power saving needs, and instruct the target first information to the first device through the fifth instruction information.

[0162] For example, as shown in Figure 6, the first device has eight antenna ports on frequency bands 1 through 3 respectively. The second device can switch the antenna port mode of the first device in frequency band 1 between antenna port mode 1 and antenna port mode 2 based on service requirements or power saving needs. Antenna port mode 1 is the mode in which the first device uses four antenna ports to receive data in frequency band 1, and antenna port mode 2 is the mode in which the first device uses eight antenna ports to receive data in frequency band 1.

[0163] The second device transmits CSI-RS on frequency band 1. The first device receives CSI-RS on frequency band 1, obtains first information 1 and first information 2, and reports first information 1 and first information 2 to the second device. First information 1 corresponds to antenna port mode 1 of the first device on frequency band 1, and first information 2 corresponds to antenna port mode 2 of the first device on frequency band 1. After the first device reports first information 1 and first information 2, when the second device, based on service conditions or power saving requirements, reduces the number of antenna ports for receiving data on frequency band 1 from 8 to 4 (i.e., the second device switches the antenna port mode of the first device on frequency band 1 from antenna port mode 2 to antenna port mode 1), the second device sends a fifth indication message to the first device to indicate first information 1. After receiving the fifth indication message, the first device can determine antenna port mode 1 based on first information 1 and receive data transmitted by the second device on frequency band 1 using antenna port mode 1. Accordingly, the second device transmits data to the first device on frequency band 1 based on first information 1.

[0164] Optionally, the first device can have a default antenna port mode. If the first device does not detect the fifth indication information, it will automatically use the default antenna port mode to receive data.

[0165] Optionally, in order to allow sufficient time for the first device to switch antenna port modes, a certain time interval needs to be allowed between the second device sending the aforementioned fifth instruction information and sending data.

[0166] Optionally, the antenna port mode of the first device in the first frequency band can be pre-agreed, pre-defined by a protocol, or set at the factory, or the first device can report instruction information to the second device to indicate the antenna port mode of the first device in the first frequency band.

[0167] Optionally, when the first device sends multiple sets of first information, it can also indicate the antenna port mode corresponding to each set of first information. Optionally, the first device reporting the antenna port mode corresponding to each set of first information in the multiple sets of first information can be: reporting the identifier of the antenna port mode corresponding to each set of first information; or reporting the identifier of the available antenna ports in the antenna port mode corresponding to each set of first information; or reporting the identifier of the unavailable antenna ports in the antenna port mode corresponding to each set of first information; or reporting the number of available antenna ports in the antenna port mode corresponding to each set of first information; or reporting the number of unavailable antenna ports in the antenna port mode corresponding to each set of first information; or reporting whether the shared antenna ports of the first device in the first frequency band are available in the antenna port mode corresponding to each set of first information; or reporting the resource identifier of the second reference signal corresponding to the antenna ports that the first device can use in the first frequency band in the antenna port mode corresponding to each set of first information; or reporting the resource identifier of the second reference signal corresponding to the antenna ports that the first device cannot use in the first frequency band in the antenna port mode corresponding to each set of first information.

[0168] Alternatively, when the first device sends multiple sets of first information, it may not indicate the antenna port mode corresponding to each set of first information. For example, the antenna port mode corresponding to each set of multiple sets of first information may be pre-agreed; or, the second device may determine the antenna port mode corresponding to each set of multiple sets of first information based on certain preset methods / algorithms.

[0169] Method 3: The first device sends a sixth indication message to the second device, which indicates the antenna port mode used by the first device in the first frequency band. Accordingly, the second device can receive the sixth indication message.

[0170] By instructing the second device on the antenna port mode used by the first device in the first frequency band, both the first and second devices can determine the antenna port mode used by the first device in the first frequency band. Then, based on the antenna port mode used by the first device in the first frequency band, the second device can determine the target first information corresponding to the antenna port mode used by the first device in the first frequency band from multiple sets of first information, and transmit data to the first device in the first frequency band based on the target first information. Correspondingly, the first device can receive data in the first frequency band using the antenna port mode corresponding to the target first information.

[0171] Optionally, the sixth indication information may indicate the antenna port mode used by the first device in the first frequency band through one or more of the following information: an identifier of the antenna port mode used by the first device in the first frequency band, an identifier of the antenna ports available to the first device in the first frequency band, an identifier of the antenna ports unavailable to the first device in the first frequency band, the number of antenna ports available to the first device in the first frequency band, the number of antenna ports unavailable to the first device in the first frequency band, whether the shared antenna ports of the first device in the first frequency band are available, the resource identifier of the second reference signal corresponding to the antenna ports available to the first device in the first frequency band, and the resource identifier of the second reference signal corresponding to the antenna ports unavailable to the first device in the first frequency band. The second reference signal may be an uplink reference signal, such as an SRS or other reference signal; this embodiment of the application does not limit this.

[0172] In one possible embodiment, the first device can send a sixth indication message to the second device when the antenna port mode used in the first frequency band changes. That is, the first device can proactively report the sixth indication message to the second device.

[0173] For example, as shown in Figure 6, the first device has eight antenna ports on frequency bands 1 through 3. The first device can switch its antenna port mode in frequency band 1 between antenna port mode 1 and antenna port mode 2 based on service requirements or power-saving needs. Antenna port mode 1 is the mode where the first device uses four antenna ports to receive data in frequency band 1, and antenna port mode 2 is the mode where the first device uses eight antenna ports to receive data in frequency band 1. When the first device reduces the number of antenna ports for receiving data in frequency band 1 from eight to four based on service requirements or power-saving needs (i.e., when the first device switches its antenna port mode from antenna port mode 2 to antenna port mode 1), the first device actively sends a sixth instruction message to the second device to instruct it to use antenna port mode 1 in frequency band 1.

[0174] For example, as shown in Figure 2, the first device shares four antenna ports across frequency bands 1 to 3. The first device cannot simultaneously use the shared antenna ports to receive data across these multiple frequency bands. Antenna port mode 1 is the mode where the first device uses only four dedicated antenna ports to receive data in frequency band 1, and antenna port mode 2 is the mode where the first device uses both four dedicated antenna ports and four shared antenna ports to receive data in frequency band 1. When the number of antenna ports on frequency band 1 changes from eight to four (at which point the first device cannot use shared antenna ports on frequency band 1), i.e., when the first device switches its antenna port mode from antenna port mode 2 to antenna port mode 1, it sends a sixth instruction message to the second device to instruct the first device to use antenna port mode 1 in frequency band 1.

[0175] In another possible embodiment, the second device may first send an acquisition request to the first device to obtain the antenna port mode used by the first device in the first frequency band. Accordingly, the first device may receive the acquisition request. Based on the acquisition request, the first device may send a sixth indication message to the second device. That is, the second device may proactively trigger the first device to report the sixth indication message.

[0176] Optionally, when the first device shares one or more antenna ports on multiple frequency bands (including the first frequency band), and the first device cannot simultaneously use the shared antenna ports to receive data on the multiple frequency bands, and not all of the multiple frequency bands are deployed under the second device, the first device may send a sixth indication message to the second device. Alternatively, the first device may also send the sixth indication message to the second device when all of the multiple frequency bands are deployed under the second device; this application embodiment does not impose limitations.

[0177] Optionally, the antenna port mode of the first device in the first frequency band can be pre-agreed, pre-defined by a protocol, or set at the factory, or the first device can report instruction information to the second device to indicate the antenna port mode of the first device in the first frequency band.

[0178] Optionally, when the first device sends multiple sets of first information, it can also indicate the antenna port mode corresponding to each set of first information. In this way, the second device can know the correspondence between each set of first information and the antenna port mode. Therefore, after receiving the sixth indication information, the second device can determine the target first information corresponding to the antenna port mode used by the first device in the first frequency band, based on the antenna port mode indicated by the sixth indication information, and send data to the first device in the first frequency band based on the target first information.

[0179] Optionally, the first device may report the antenna port mode corresponding to each set of first information in the multiple sets of first information, which may include: reporting the identifier of the antenna port mode corresponding to each set of first information; reporting the identifier of the available antenna ports in the antenna port mode corresponding to each set of first information; reporting the identifier of the unavailable antenna ports in the antenna port mode corresponding to each set of first information; reporting the number of available antenna ports in the antenna port mode corresponding to each set of first information; reporting the number of unavailable antenna ports in the antenna port mode corresponding to each set of first information; reporting whether the shared antenna ports of the first device in the first frequency band are available in the antenna port mode corresponding to each set of first information; reporting the resource identifier of the second reference signal corresponding to the antenna ports that the first device can use in the first frequency band in the antenna port mode corresponding to each set of first information; or reporting the resource identifier of the second reference signal corresponding to the antenna ports that the first device cannot use in the first frequency band in the antenna port mode corresponding to each set of first information.

[0180] Alternatively, when the first device sends multiple sets of first information, it may not indicate the antenna port mode corresponding to each set of first information. For example, the antenna port mode corresponding to each set of multiple sets of first information may be pre-agreed; or, the second device may determine the antenna port mode corresponding to each set of multiple sets of first information based on certain preset methods / algorithms.

[0181] Method 4: The second device sends a seventh indication message to the first device, which indicates the antenna port mode used by the first device in the first frequency band. Accordingly, the first device can receive the seventh indication message.

[0182] In other words, the second device can select an antenna port mode for the first device to use in the first frequency band and send a seventh indication message to the first device to indicate the selected antenna port mode. By indicating the antenna port mode used by the first device in the first frequency band, both the first and second devices can determine the antenna port mode used by the first device in the first frequency band. Then, based on the antenna port mode used by the first device in the first frequency band, the second device can determine the target first information corresponding to the antenna port mode used by the first device in the first frequency band from multiple sets of first information, and send data to the first device in the first frequency band based on the target first information. Correspondingly, the first device can receive data in the first frequency band using the antenna port mode corresponding to the target first information.

[0183] Optionally, the seventh indication information may indicate the antenna port mode used by the first device in the first frequency band through one or more of the following information: an identifier of the antenna port mode used by the first device in the first frequency band, an identifier of the antenna ports available to the first device in the first frequency band, an identifier of the antenna ports unavailable to the first device in the first frequency band, the number of antenna ports available to the first device in the first frequency band, the number of antenna ports unavailable to the first device in the first frequency band, whether the shared antenna ports of the first device in the first frequency band are available, the resource identifier of the second reference signal corresponding to the antenna ports available to the first device in the first frequency band, and the resource identifier of the second reference signal corresponding to the antenna ports unavailable to the first device in the first frequency band. The second reference signal may be an uplink reference signal, such as an SRS or other reference signal; this embodiment of the application does not limit this.

[0184] Optionally, the second device may send a seventh indication message to the first device based on service requirements or power-saving needs. That is, the second device may select an antenna port mode in a first frequency band for the first device based on service requirements or power-saving needs, and indicate the selected antenna port mode to the first device. Alternatively, the second device may determine target first information based on service requirements or power-saving needs, and indicate the antenna port mode corresponding to the target first information to the first device via the seventh indication message.

[0185] Optionally, the first device can have a default antenna port mode. If the first device does not detect the seventh indication information, it will automatically use the default antenna port mode to receive data.

[0186] Optionally, the antenna port mode of the first device in the first frequency band can be pre-agreed, pre-defined by a protocol, or set at the factory, or the first device can report instruction information to the second device to indicate the antenna port mode of the first device in the first frequency band.

[0187] Optionally, when the first device sends multiple sets of first information, it can also send the antenna port mode corresponding to each set of first information. This allows the second device to know the correspondence between each set of first information and the antenna port mode. Therefore, after the second device selects the antenna port mode for the first device to use in the first frequency band, it can determine the target first information corresponding to the antenna port mode used by the first device in the first frequency band based on this correspondence, and send data to the first device in the first frequency band based on the target first information. Alternatively, the second device can also indicate the antenna port mode corresponding to the target first information to the first device after determining the target first information.

[0188] Optionally, the first device may report the antenna port mode corresponding to each set of first information in the multiple sets of first information, which may include: reporting the identifier of the antenna port mode corresponding to each set of first information; reporting the identifier of the available antenna ports in the antenna port mode corresponding to each set of first information; reporting the identifier of the unavailable antenna ports in the antenna port mode corresponding to each set of first information; reporting the number of available antenna ports in the antenna port mode corresponding to each set of first information; reporting the number of unavailable antenna ports in the antenna port mode corresponding to each set of first information; reporting whether the shared antenna ports of the first device in the first frequency band are available in the antenna port mode corresponding to each set of first information; reporting the resource identifier of the second reference signal corresponding to the antenna ports that the first device can use in the first frequency band in the antenna port mode corresponding to each set of first information; or reporting the resource identifier of the second reference signal corresponding to the antenna ports that the first device cannot use in the first frequency band in the antenna port mode corresponding to each set of first information.

[0189] Alternatively, when the first device sends multiple sets of first information, it may not indicate the antenna port mode corresponding to each set of first information. For example, the antenna port mode corresponding to each set of multiple sets of first information may be pre-agreed; or, the second device may determine the antenna port mode corresponding to each set of multiple sets of first information based on certain preset methods / algorithms.

[0190] Method 5: The second device determines the antenna port mode used by the first device in the first frequency band based on the number of dedicated antenna ports, the number of shared antenna ports, and the multiple frequency bands sharing the shared antenna ports of the first device in the first frequency band.

[0191] Optionally, the number of dedicated antenna ports and the number of shared antenna ports of the first device in the first frequency band can be understood as the number of dedicated antenna ports and the number of shared antenna ports of the first device for receiving data in the first frequency band.

[0192] Based on this method, the second device can accurately determine the antenna port mode used by the first device in the first frequency band. Then, when transmitting data, it can use the target first information corresponding to the antenna port mode used by the first device in the first frequency band to send data to the first device, thereby improving the data reception performance of the first device.

[0193] In one possible embodiment, if the first device shares one or more antenna ports on multiple frequency bands (including the first frequency band), and the first device cannot simultaneously use the shared antenna ports to receive data on the multiple frequency bands, and the multiple frequency bands are all deployed under the second device, the second device can determine the antenna port mode used by the first device in the first frequency band based on the number of dedicated antenna ports of the first device in the first frequency band, the number of shared antenna ports, and the multiple frequency bands sharing the shared antenna ports.

[0194] For example, as shown in Figure 2, the first device has 4 dedicated antenna ports on frequency bands 1 through 3, and 4 shared antenna ports on frequency bands 1 through 3. Frequency bands 1 through 3 are all deployed under the second device. The first device cannot simultaneously use shared antenna ports on these multiple frequency bands. Assuming the second device schedules the first device to use 8 antenna ports to receive data on frequency band 3, and the second device knows that the number of dedicated antenna ports on frequency bands 1 through 3 is 4, and also knows that frequency bands 1 through 3 have 4 shared antenna ports, then the second device can determine that the first device can only use 4 dedicated antenna ports to receive data on frequency bands 1 and 2.

[0195] In one possible embodiment, the first device sends a third indication message and an eighth indication message to the second device. The third indication message indicates the number of dedicated antenna ports and the number of shared antenna ports of the first device in a first frequency band. The eighth indication message indicates multiple frequency bands sharing the shared antenna ports. Accordingly, the second device can receive the third and eighth indication messages. Based on this possible embodiment, the number of dedicated antenna ports, the number of shared antenna ports, and the multiple frequency bands sharing the shared antenna ports of the first device in the first frequency band can be more flexible. Optionally, the third and eighth indication messages can be the same indication message or different indication messages.

[0196] Optionally, the third indication information may also indicate the number of antenna ports used by the first device to transmit data in the first frequency band.

[0197] In another possible embodiment, one or more of the following information may also be pre-agreed: the number of dedicated antenna ports of the first device in the first frequency band, the number of shared antenna ports, multiple frequency bands sharing the shared antenna ports, and the number of antenna ports used for transmitting data. For example, this may be specified in a protocol or set at the factory by the manufacturer. Based on this possible embodiment, communication overhead can be reduced.

[0198] Optionally, when the first device sends multiple sets of first information, it can also send the antenna port pattern corresponding to each set of first information. This allows the second device to know the correspondence between each set of first information and the antenna port pattern. Thus, after determining the antenna port pattern used by the first device in the first frequency band, the second device can determine the target first information corresponding to that antenna port pattern used by the first device in the first frequency band based on this correspondence, and send data to the first device in the first frequency band based on the target first information.

[0199] Optionally, the first device may report the antenna port mode corresponding to each set of first information in the multiple sets of first information, which may include: reporting the identifier of the antenna port mode corresponding to each set of first information; reporting the identifier of the available antenna ports in the antenna port mode corresponding to each set of first information; reporting the identifier of the unavailable antenna ports in the antenna port mode corresponding to each set of first information; reporting the number of available antenna ports in the antenna port mode corresponding to each set of first information; reporting the number of unavailable antenna ports in the antenna port mode corresponding to each set of first information; reporting whether the shared antenna ports of the first device in the first frequency band are available in the antenna port mode corresponding to each set of first information; reporting the resource identifier of the second reference signal corresponding to the antenna ports that the first device can use in the first frequency band in the antenna port mode corresponding to each set of first information; or reporting the resource identifier of the second reference signal corresponding to the antenna ports that the first device cannot use in the first frequency band in the antenna port mode corresponding to each set of first information.

[0200] Alternatively, when the first device sends multiple sets of first information, it may not indicate the antenna port mode corresponding to each set of first information. For example, the antenna port mode corresponding to each set of multiple sets of first information may be pre-agreed; or, the second device may determine the antenna port mode corresponding to each set of multiple sets of first information based on certain preset methods / algorithms.

[0201] Based on the method described in Figure 5, the first device can report multiple sets of first information associated with the first reference signal to the second device, and these multiple sets of first information correspond one-to-one with multiple antenna port modes of the first device in the first frequency band. In this way, the second device can subsequently select a set of first information from the multiple sets of first information that matches the antenna port mode used by the first device in the first frequency band when transmitting data, and transmit data based on the selected first information. Therefore, the method described in Figure 5 helps avoid errors in the second device's data transmission parameters (such as modulation coding and precoding) based on the first information, thus improving the data reception performance of the first device.

[0202] Please refer to Figure 7, which is a flowchart illustrating another information reporting method provided in an embodiment of this application, wherein:

[0203] 701. The second device sends configuration information to the first device. This configuration information is used to configure the first resource, which includes the first resource corresponding to the dedicated antenna port and the first resource corresponding to the shared antenna port. Accordingly, the first device can receive this configuration information.

[0204] In this embodiment, the first resource is the resource where the second reference signal is located. Optionally, the first resource may include time-frequency resources and / or port resources.

[0205] Optionally, the second reference signal can be an SRS, and the first resource can be an SRS resource. Alternatively, the second reference signal can be any other reference signal, and the first resource can be any other reference signal resource; this application does not limit the specific reference signal.

[0206] In this embodiment, the first resource corresponding to the dedicated antenna port can be understood as the first device transmitting a second reference signal using the dedicated antenna port on that first resource. Similarly, the first resource corresponding to the shared antenna port can be understood as the first device transmitting a second reference signal using the shared antenna port on that first resource.

[0207] In one possible embodiment, the configuration information is determined based on the number of dedicated antenna ports and the number of shared antenna ports of the first device in the first frequency band. Optionally, the number of dedicated antenna ports and the number of shared antenna ports of the first device in the first frequency band can be understood as the number of dedicated antenna ports and the number of shared antenna ports of the first device for receiving data in the first frequency band.

[0208] Optionally, the configuration information is specifically determined based on the number of dedicated antenna ports of the first device in the first frequency band, the number of shared antenna ports of the first device in the first frequency band, and the number of antenna ports of the first device used for transmitting data in the first frequency band.

[0209] For example, suppose the first device has 4 dedicated antenna ports in the first frequency band, 4 shared antenna ports in the first frequency band, and 2 antenna ports used for data transmission in the first frequency band. Then, the first device has a total of 8 (receive) antenna ports in the first frequency band. The first device can simultaneously receive data through these 8 antenna ports (i.e., 8R), and can simultaneously transmit data through 2 of these 8 antenna ports (i.e., 2T). The second device can configure 4 2-antenna port first resources for the first device according to 2T8R, i.e., (8 divided by 2) 2-antenna port first resources. The first device transmits a second reference signal through 2 antenna ports on each first resource. For example, dedicated antenna port 1 and dedicated antenna port 2 correspond to first resource 1, dedicated antenna port 3 and dedicated antenna port 4 correspond to first resource 2, shared antenna port 1 and shared antenna port 2 correspond to first resource 3, and shared antenna port 3 and shared antenna port 4 correspond to first resource 4. The first device transmits the second reference signal 1 through dedicated antenna port 1 and dedicated antenna port 2 on first resource 1. The first device transmits a second reference signal 2 on the first resource 2 via dedicated antenna ports 3 and 4. The first device transmits a second reference signal 3 on the first resource 3 via shared antenna ports 1 and 2. The first device transmits a second reference signal 4 on the first resource 4 via shared antenna ports 3 and 4.

[0210] In one possible embodiment, the second device receives third indication information from the first device, which indicates the number of dedicated antenna ports and the number of shared antenna ports of the first device in the first frequency band. This allows for more flexible settings of the number of dedicated antenna ports and the number of shared antenna ports of the first device in the first frequency band. Optionally, the third indication information may also indicate the number of antenna ports of the first device used for transmitting data in the first frequency band.

[0211] Alternatively, one or more of the following information can be pre-agreed: the number of dedicated antenna ports, the number of shared antenna ports, and the number of antenna ports used for data transmission on the first device in the first frequency band. For example, this can be specified in the protocol or pre-configured by the manufacturer. This can save communication overhead.

[0212] In one possible embodiment, the first resource corresponding to the dedicated antenna port and the first resource corresponding to the shared antenna port are located within a first resource set; wherein:

[0213] 1) The first resource in the first resource set corresponds to a dedicated antenna port or a shared antenna port that is pre-agreed.

[0214] In other words, the first resource corresponding to the dedicated antenna port and the first resource corresponding to the shared antenna port are located in the same resource set. Which first resources in this resource set correspond to the dedicated antenna port and which correspond to the shared antenna port are predetermined. For example, this can be specified in the protocol or set by the manufacturer at the factory. This can save communication overhead.

[0215] For example, it is pre-agreed that within the first resource set, according to the time-domain order from front to back, first resource 1 and first resource 2 correspond to dedicated antenna ports, and first resource 3 and first resource 4 correspond to shared antenna ports.

[0216] 2) The second device may also send a first indication message to the first device, the first indication message indicating that the first resource in the first resource set corresponds to a dedicated antenna port or a shared antenna port. Accordingly, the first device may receive the first indication message.

[0217] In other words, the first resource corresponding to the dedicated antenna port and the first resource corresponding to the shared antenna port are located in the same resource set. The second device can indicate to the first device which first resources in this resource set correspond to the dedicated antenna port and which first resources correspond to the shared antenna port. This allows for more flexible configuration of the first resources.

[0218] For example, this can be indicated using a bitmap. For instance, a first resource set includes first resource 1 through first resource 4. The bitmap consists of 4 bits. Different first resources correspond to different bits in the bitmap. For example, first resources 1 through first resources 4 correspond to the bits in the bitmap in chronological order. First resource 1 corresponds to the first bit in the bitmap, first resource 2 corresponds to the second bit, first resource 3 corresponds to the third bit, and first resource 4 corresponds to the fourth bit.

[0219] When one or more bits in the bitmap are 1, it indicates that the first resource corresponding to these bits is the first resource corresponding to the shared antenna port. When one or more bits in the bitmap are 0, it indicates that the first resource corresponding to these bits is the first resource corresponding to the dedicated antenna port. For example, if the bitmap is 1010, it means that first resource 1 corresponds to the shared antenna port, first resource 2 corresponds to the dedicated antenna port, first resource 3 corresponds to the shared antenna port, and first resource 4 corresponds to the dedicated antenna port.

[0220] Alternatively, when one or more bits in the bitmap are 0, it indicates that the first resource corresponding to these bits is the first resource corresponding to the shared antenna port; when one or more bits in the bitmap are 1, it indicates that the first resource corresponding to these bits is the first resource corresponding to the dedicated antenna port. This application does not impose any limitations on this.

[0221] In another possible embodiment, the first resource corresponding to the dedicated antenna port is located within a first resource set, and the first resource corresponding to the shared antenna port is located within a second resource set; the first and second resource sets are associated; wherein:

[0222] 1) The first resource in the first resource set corresponds to a dedicated antenna port, and the first resource in the second resource set corresponds to a shared antenna port, which is pre-agreed.

[0223] In other words, the first resource corresponding to the dedicated antenna port and the first resource corresponding to the shared antenna port are located in different resource sets. Which resource set's first resource corresponds to the dedicated antenna port and which resource set's first resource corresponds to the shared antenna port is predetermined. For example, it can be specified in the protocol or set by the manufacturer at the factory. This saves communication overhead.

[0224] For example, it is pre-defined that in two resource sets, the resource set that comes first in the time domain is the first resource set (that is, the first resource in this set corresponds to a dedicated antenna port), and the resource set that comes later in the time domain is the second resource set (that is, the first resource in this set corresponds to a shared antenna port).

[0225] Optionally, the first resource set and the second resource set are associated. Specifically, the identifier of the second resource set may be included in the relevant fields of the configuration of the first resource set, and / or the identifier of the first resource set may be included in the relevant fields of the configuration of the second resource set.

[0226] 2) The second device may also send a second indication message to the first device, the second indication message indicating that the first resource in the first resource set corresponds to a dedicated antenna port, and the first resource in the second resource set corresponds to a shared antenna port. Accordingly, the first device may receive the second indication message.

[0227] In other words, the first resource corresponding to the dedicated antenna port and the first resource corresponding to the shared antenna port are located in different resource sets. The second device can indicate to the first device which resource set corresponds to the dedicated antenna port and which resource set corresponds to the shared antenna port. This allows for more flexible configuration of the first resource.

[0228] For example, this can be indicated using a bitmap. For instance, the second device is configured with two resource sets, which correspond to bits in the bitmap in chronological order. The resource set that appears earlier in the time domain corresponds to the first bit in the bitmap, and the resource set that appears later in the time domain corresponds to the second bit in the bitmap.

[0229] When one or more bits in the bitmap are 1, it indicates that the first resource in the resource set corresponding to these bits is the first resource corresponding to the shared antenna port (i.e., the resource set corresponding to these bits is the second resource set); when one or more bits in the bitmap are 0, it indicates that the first resource in the resource set corresponding to these bits is the first resource corresponding to the dedicated antenna port (i.e., the resource set corresponding to these bits is the first resource set). For example, if the bitmap is 10, it means that the resource set earlier in the time domain is the second resource set, and the resource set later in the time domain is the first resource set.

[0230] Alternatively, when one or more bits in the bitmap are 0, it indicates that the first resource in the resource set corresponding to these bits is the first resource corresponding to the shared antenna port (i.e., the resource set corresponding to these bits is the second resource set). When one or more bits in the bitmap are 1, it indicates that the first resource in the resource set corresponding to these bits is the first resource corresponding to the dedicated antenna port (i.e., the resource set corresponding to these bits is the first resource set). This application does not impose any limitations on this embodiment.

[0231] Alternatively, the second indication information may only indicate which resource set(s) corresponds to the dedicated antenna port (i.e., which resource set(s) is the first resource set), so that the first device can also determine the first resource set(s) corresponding to the shared antenna port(s) based on the second indication information (i.e., the remaining resource set(s) is the second resource set).

[0232] Alternatively, the second indication information may only indicate which resource set(s) corresponds to the shared antenna port (i.e., which resource set(s) is the second resource set), so that the first device can also determine the first resource set(s) corresponding to the dedicated antenna port(s) based on the second indication information (i.e., the remaining resource set(s) is the first resource set).

[0233] Optionally, the first resource set and the second resource set are associated. Specifically, the identifier of the second resource set may be included in the relevant fields of the configuration of the first resource set, and / or the identifier of the first resource set may be included in the relevant fields of the configuration of the second resource set.

[0234] 702. The first device transmits a second reference signal on a first resource corresponding to a dedicated antenna port and / or a first resource corresponding to a shared antenna port, based on the antenna port mode used in the first frequency band.

[0235] 703. The second device receives a second reference signal from the first device on the first resource corresponding to the dedicated antenna port and / or the first resource corresponding to the shared antenna port, based on the antenna port mode used by the first device in the first frequency band.

[0236] For example, when the first device uses the first antenna port mode in the first frequency band (the first antenna port mode is the mode in which the first device only uses a dedicated antenna port in the first frequency band), the first device transmits the second reference signal only on the first resource corresponding to the dedicated antenna port. Correspondingly, the second device only receives the second reference signal on the first resource corresponding to the dedicated antenna port, and does not receive the second reference signal on the first resource corresponding to the shared antenna port.

[0237] In other words, when the first resource corresponding to the dedicated antenna port and the first resource corresponding to the shared antenna port are configured, when the antenna port mode used by the first device in the first frequency band is the first antenna port mode, the first device only transmits the second reference signal on the first resource corresponding to the dedicated antenna port, and the second device only receives the second reference signal on the first resource corresponding to the dedicated antenna port.

[0238] For example, when the first device uses a second antenna port mode in the first frequency band (the second antenna port mode is a mode in which the first device uses both a dedicated antenna port and a shared antenna port in the first frequency band), the first device transmits a second reference signal on the first resource corresponding to the dedicated antenna port and the first resource corresponding to the shared antenna port. Correspondingly, the second device receives the second reference signal on the first resource corresponding to the dedicated antenna port and the first resource corresponding to the shared antenna port.

[0239] Optionally, the second device may determine transmission parameters (e.g., precoding) based on the measurement results of the second reference signal. Subsequently, the second device transmits data based on these transmission parameters, or, optionally, transmits the first reference signal. It should be understood that in this embodiment, the timing order of the second device transmitting the first reference signal and the first device transmitting the second reference signal is not limited. For example, the first device may transmit the second reference signal first. After receiving the second reference signal transmitted by the first device, the second device transmits the first reference signal back to the first device (e.g., transmitting the precoded first reference signal). Alternatively, the second device may transmit the first reference signal first, and then the first device transmits the second reference signal.

[0240] 704. The second device sends a first reference signal to the first device in the first frequency band.

[0241] 705. The first device receives the first reference signal in the first frequency band.

[0242] 706. The first device transmits multiple sets of first information associated with the first reference signal, wherein each set of first information corresponds one-to-one with a multiple antenna port mode of the first device in the first frequency band. Accordingly, the second device can receive the multiple sets of first information associated with the first reference signal.

[0243] The specific implementation methods of steps 704 to 706 can be found in the specific implementation methods of steps 501 to 503, and will not be repeated here.

[0244] Optionally, the alignment between the first device and the second device with respect to the antenna port mode used by the first device in the first frequency band can be achieved through the following optional methods:

[0245] Method 1: The first device sends a fourth indication message to the second device, which indicates the target first information among multiple sets of first information. Accordingly, the second device can receive the fourth indication message.

[0246] Optionally, in this method, the second device may first send a first reference signal. The first device reports multiple sets of first information and indicates the target first information; then, the first device sends a second reference signal. Accordingly, the second device may receive the second reference signal based on the antenna port mode corresponding to the target first information.

[0247] Method 2: The second device sends a fifth instruction message to the first device, which indicates the target first information among multiple sets of first information. Accordingly, the first device can receive the fifth instruction message.

[0248] Optionally, in this method, the second device may first send a first reference signal. After the first device reports multiple sets of first information, the second device indicates the target first information to the first device. Then, the first device can determine the antenna port mode corresponding to the target first information based on the target first information, and send a second reference signal based on the antenna port mode corresponding to the target first information. Accordingly, the second device can receive the second reference signal based on the antenna port mode corresponding to the target first information.

[0249] Method 3: The first device sends a sixth indication message to the second device, which indicates the antenna port mode used by the first device in the first frequency band. Accordingly, the second device can receive the sixth indication message.

[0250] In this method, there is no limitation on the timing order of the second device sending the first reference signal and the first device sending the second reference signal.

[0251] Method 4: The second device sends a seventh indication message to the first device, which indicates the antenna port mode used by the first device in the first frequency band. Accordingly, the first device can receive the seventh indication message.

[0252] In this method, there is no limitation on the timing order of the second device sending the first reference signal and the first device sending the second reference signal.

[0253] Method 5: The second device determines the antenna port mode used by the first device in the first frequency band based on the number of dedicated antenna ports, the number of shared antenna ports, and the multiple frequency bands sharing the shared antenna ports of the first device in the first frequency band.

[0254] In this method, there is no limitation on the timing order of the second device sending the first reference signal and the first device sending the second reference signal.

[0255] For details on the specific implementation methods of methods 1 to 5, please refer to the specific implementation methods of methods 1 to 5 in the embodiments corresponding to Figure 5, which will not be repeated here.

[0256] Based on the method described in Figure 7, the first device can report multiple sets of first information associated with the first reference signal to the second device, and these multiple sets of first information correspond one-to-one with multiple antenna port modes of the first device in the first frequency band. In this way, the second device can subsequently select a set of first information from the multiple sets of first information that matches the antenna port mode used by the first device in the first frequency band when transmitting data, and transmit data based on the selected first information. Therefore, the method described in Figure 7 helps avoid errors in the second device's data transmission parameters (such as modulation coding and precoding) settings based on the first information, improving the data reception performance of the first device. Furthermore, the second device can receive the second reference signal based on the antenna port mode used by the first device in the first frequency band, which helps to accurately determine the precoding matrix.

[0257] It is worth mentioning that, under logically permissible circumstances, the content in the embodiment corresponding to Figure 5 can also be freely combined with the content in the embodiment corresponding to Figure 7.

[0258] Figure 8 is a possible exemplary block diagram of the communication device involved in the embodiments of this application. As shown in Figure 8, the communication device 800 may include modules or units for implementing the method embodiments described above. In one possible design, the communication device 800 includes a processing unit 802 and a communication unit 803. The processing unit 802 is used for data processing. Optionally, the communication device 800 may further include a storage unit 801 for storing device program code and / or data.

[0259] The communication device 800 can be a first device-side device in the above embodiments, such as a first device or a communication module in the first device, or a circuit or chip in the first device that is responsible for communication functions.

[0260] For example, in one embodiment, the communication unit 803 is configured to: receive a first reference signal in a first frequency band; and send multiple sets of first information associated with the first reference signal, wherein the multiple sets of first information correspond one-to-one with multiple antenna port modes of the first device in the first frequency band.

[0261] In one possible design, multiple sets of first information include first information corresponding to a first antenna port mode and first information corresponding to a second antenna port mode; the first antenna port mode is a mode in which the first device uses only a dedicated antenna port in the first frequency band; the second antenna port mode is a mode in which the first device uses both a dedicated antenna port and a shared antenna port in the first frequency band; the shared antenna port is an antenna port shared by the first device in multiple frequency bands, including the first frequency band.

[0262] In one possible design, the communication unit 803 is further configured to: receive configuration information for configuring a first resource, the first resource including a first resource corresponding to a dedicated antenna port and a first resource corresponding to a shared antenna port; and transmit a second reference signal on the first resource corresponding to the dedicated antenna port and / or the first resource corresponding to the shared antenna port based on the antenna port mode used in the first frequency band.

[0263] In one possible design, the first resource corresponding to the dedicated antenna port and the first resource corresponding to the shared antenna port are located within a first resource set; wherein:

[0264] The first resource in the first resource set corresponds to a dedicated antenna port or a shared antenna port that is predetermined; or, the communication unit 803 is further configured to receive first indication information, which indicates that the first resource in the first resource set corresponds to a dedicated antenna port or a shared antenna port.

[0265] In one possible design, the first resource corresponding to the dedicated antenna port is located within a first resource set, and the first resource corresponding to the shared antenna port is located within a second resource set; the first resource set and the second resource set are associated; wherein:

[0266] The first resource in the first resource set corresponds to a dedicated antenna port, and the first resource in the second resource set corresponds to a shared antenna port, which is predetermined; or, the communication unit 803 is further used to receive second indication information, which indicates that the first resource in the first resource set corresponds to a dedicated antenna port, and the first resource in the second resource set corresponds to a shared antenna port.

[0267] In one possible design, the communication unit 803 is also used to transmit third indication information, which indicates the number of dedicated antenna ports and the number of shared antenna ports of the first device in the first frequency band.

[0268] In one possible design, the communication unit 803 is also used to send a fourth indication message, which indicates the target first information among multiple sets of first information.

[0269] In one possible design, the communication unit 803 is also used to receive fifth indication information, which indicates the target first information among multiple sets of first information.

[0270] In one possible design, when the communication device 800 is a first device or a communication module within a first device, the function of the processing unit 802 can be implemented by one or more processors. Specifically, the processor may include a modem chip, or a system-on-a-chip (SoC) chip or a SIP chip containing a modem core. The function of the communication unit 803 can be implemented by a transceiver circuit.

[0271] In one possible design, when the communication device 800 is a circuit or chip responsible for communication functions in the first device, such as a modem chip or a system-on-a-chip (SoC) or SIP chip containing a modem core, the function of the processing unit 802 can be implemented by a circuit system in the aforementioned chip that includes one or more processors or processor cores. The function of the communication unit 803 can be implemented by an interface circuit or data transceiver circuit on the aforementioned chip.

[0272] In one possible design, when the communication device 800 is a first device or a processing module within a first device, the functionality of the processing unit 802 can be implemented by one or more processors. Specifically, the processor may include a GPU, or a system-on-a-chip (SoC) or SIP chip containing a GPU. The functionality of the communication unit 803 can be implemented by transceiver circuitry.

[0273] In one possible design, when the communication device 800 is a circuit or chip responsible for processing functions in the first device, such as a GPU or a system-on-a-chip (SoC) or SIP chip containing a GPU, the function of the processing unit 802 can be implemented by a circuit system in the aforementioned chip that includes one or more processors or processor cores. The function of the communication unit 803 can be implemented by interface circuitry or data transceiver circuitry on the aforementioned chip.

[0274] The communication device 800 can be a second device-side device in the above embodiments, such as a second device or a communication module in the second device, or a circuit or chip in the second device that is responsible for communication functions.

[0275] For example, in one embodiment, the communication unit 803 is configured to: transmit a first reference signal in a first frequency band; and receive multiple sets of first information associated with the first reference signal from a first device, wherein the multiple sets of first information correspond one-to-one with multiple antenna port modes of the first device in the first frequency band.

[0276] In one possible design, multiple sets of first information include first information corresponding to a first antenna port mode and first information corresponding to a second antenna port mode; the first antenna port mode is a mode in which the first device uses only a dedicated antenna port in the first frequency band; the second antenna port mode is a mode in which the first device uses both a dedicated antenna port and a shared antenna port in the first frequency band; the shared antenna port is an antenna port shared by the first device in multiple frequency bands, including the first frequency band.

[0277] In one possible design, the communication unit 803 is further configured to send configuration information to the first device, the configuration information being used to configure the first resource, the first resource including the first resource corresponding to the dedicated antenna port and the first resource corresponding to the shared antenna port; and to receive a second reference signal from the first device on the first resource corresponding to the dedicated antenna port and / or the first resource corresponding to the shared antenna port based on the antenna port mode used by the first device in the first frequency band.

[0278] In one possible design, the first resource corresponding to the dedicated antenna port and the first resource corresponding to the shared antenna port are located within a first resource set; wherein:

[0279] The first resource in the first resource set corresponds to a dedicated antenna port or a shared antenna port that is predetermined; or, the communication unit 803 is further configured to send a first indication information to the first device, the first indication information indicating that the first resource in the first resource set corresponds to a dedicated antenna port or a shared antenna port.

[0280] In one possible design, the first resource corresponding to the dedicated antenna port is located within a first resource set, and the first resource corresponding to the shared antenna port is located within a second resource set; the first resource set and the second resource set are associated; wherein:

[0281] The first resource in the first resource set corresponds to a dedicated antenna port, and the first resource in the second resource set corresponds to a shared antenna port, which is predetermined; or, the communication unit 803 is further used to send a second indication information to the first device, the second indication information indicating that the first resource in the first resource set corresponds to a dedicated antenna port, and the first resource in the second resource set corresponds to a shared antenna port.

[0282] In one possible design, the configuration information is determined based on the number of dedicated antenna ports and the number of shared antenna ports of the first device in the first frequency band.

[0283] In one possible design, the communication unit 803 is also configured to receive third indication information from the first device, the third indication information indicating the number of dedicated antenna ports and the number of shared antenna ports of the first device in the first frequency band.

[0284] In one possible design, the communication unit 803 is also used to receive fourth indication information from the first device, which indicates a target first information among multiple sets of first information.

[0285] In one possible design, the communication unit 803 is also used to send a fifth indication message to the first device, the fifth indication message indicating a target first information among multiple sets of first information.

[0286] In one possible design, when the communication device 800 is a second device or a communication module within a second device, the function of the processing unit 802 can be implemented by one or more processors. Specifically, the processor may include a modem chip, or a system-on-a-chip (SoC) chip or a SIP chip containing a modem core. The function of the communication unit 803 can be implemented by transceiver circuitry.

[0287] In one possible design, when the communication device 800 is a circuit or chip responsible for communication functions in a second device, such as a modem chip or a system-on-a-chip (SoC) or SIP chip containing a modem core, the function of the processing unit 802 can be implemented by a circuit system in the aforementioned chip that includes one or more processors or processor cores. The function of the communication unit 803 can be implemented by an interface circuit or data transceiver circuit on the aforementioned chip.

[0288] In one possible design, when the communication device 800 is a second device or a processing module within a second device, the functionality of the processing unit 802 can be implemented by one or more processors. Specifically, the processor may include a GPU, or a system-on-a-chip (SoC) or SIP chip containing a GPU. The functionality of the communication unit 803 can be implemented by transceiver circuitry.

[0289] In one possible design, when the communication device 800 is a circuit or chip responsible for processing functions in a second device, such as a GPU or a system-on-a-chip (SoC) or SIP chip containing a GPU, the function of the processing unit 802 can be implemented by a circuit system in the aforementioned chip that includes one or more processors or processor cores. The function of the communication unit 803 can be implemented by interface circuitry or data transceiver circuitry on the aforementioned chip.

[0290] It is understood that the division of units in the above-described device is merely a logical functional division. One function can correspond to one functional unit, or two or more functions can be integrated into one functional unit. In actual implementation, all or some units can be integrated onto a single physical entity, or distributed across different physical entities. Furthermore, the aforementioned functional units can be implemented in hardware, software, or a combination of both. Whether a function is executed 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 specific applications, but such implementations should not be considered beyond the scope of this application.

[0291] In one example, the functional unit in any of the above devices may be one or more integrated circuits configured to implement the above methods, such as: one or more application-specific integrated circuits (ASICs), or one or more central processing units (CPUs), one or more microcontroller units (MCUs), one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs), or a combination of at least two of these integrated circuit forms.

[0292] In one example, storage unit 801 may include random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory and / or registers, etc.

[0293] Referring to Figure 9, which is a schematic diagram of the structure of a first device 900 provided in an embodiment of this application, the first device 900 can correspond to the first device shown in Figure 5 or Figure 7, and is used to implement the operation of the first device in the above embodiments. As shown in Figure 9, the first device includes: one or more antennas 910, a radio frequency processing system 920, and a processor system 930.

[0294] In the downlink or sidelink direction, the RF processing system 920 receives RF signals through the antenna 910 and sends the RF-processed signals to the processor system 930 for further processing. In the uplink or sidelink direction, the processor system 930 processes the information from the first device side and sends it to the RF processing system 920, which then processes the signal and transmits it through the antenna 910.

[0295] In one example, the radio frequency (RF) processing system 920 serves as the communication interface for external communication of the first device and may include an RF front end (RFFE) 921 and an RF transceiver 922. The RFFE 921 is primarily used for one or more processing operations, such as shaping, passband selection, or gain adjustment, on the RF signals received by the antenna or those to be transmitted through the antenna. It may include one or more components such as RF switches, duplexers, filters, power amplifiers, antenna tuners, and low-noise amplifiers. The RFFE 921 can be a circuit system composed of multiple discrete components or integrated into one or more chips. The RF transceiver 922 processes the RF signals received by the RFFE into baseband / IF signals for further processing by the processor system 930, and processes the baseband / IF signals provided by the processor system 930 into RF signals for transmission to the RFFE 921. The baseband / IF signals transmitted between the RF transceiver 922 and the processor system 930 can be digital or analog signals. The RF transceiver 922 can be implemented by one or more chips, which are commonly referred to as RF ICs.

[0296] In one example, the processor system 930 may include one or more processors for processing signals and executing one or more communication protocols. Optionally, the processor system 930 may also include a memory 936. In one example, the one or more processors include at least one baseband processor 931 (also known as a modem processor). The memory 936 is used to store data and / or computer program instructions. Optionally, the processor system 930 may also include one or more application processors 932 for implementing processing of the first device operating system and application layer. The application processor 932 may include, for example, a GPU. Optionally, the processor system 930 may also include one or more of a voice subsystem 933, a multimedia subsystem 934, or an interface circuit 935. The voice subsystem 933 is used to process voice signals, the multimedia subsystem 934 is used to handle multimedia-related operations, such as video encoding / decoding, image processing, etc., and the interface circuit 935 is used to enable communication with other first device components, such as a display 940, an input device 950, a memory 960, etc. The above-mentioned components in the processor system 930 can communicate with each other via a bus or communication interface circuit.

[0297] In one example, the processor system 930 can be packaged as a single processor chip, such as a SoC chip or a SIP chip. In another example, the processor system 930 can be a system composed of multiple chips; for example, the baseband processor 931 can be packaged as a single chip, or packaged with part or all of the circuitry of the radio frequency processing system into a single chip.

[0298] In one example, memory 936 can be on-chip memory, i.e., located on the system-on-a-chip (SoC) 930. In another example, memory 960 can be off-chip memory, i.e., located outside the SoC 930.

[0299] In one example, the baseband processor 931 may include one or more processor cores 9311 and interface circuitry 9314. The one or more processor cores 9311 are used to process signals and execute one or more communication protocols. Optionally, the baseband processor 931 may also include a memory 9312 for storing at least a portion of the corresponding computer program instructions and / or data. In one example, the one or more processor cores 9311 execute the computer program instructions stored in the memory 9312 to implement the relevant operations in the above method embodiments (as described in Figure 5 or Figure 7). In this disclosure, the memory 9312 is used to store corresponding computer program instructions and / or data. This can mean that the memory 9312 stores all corresponding computer program instructions and / or data for execution by the processor core 9311; or it can mean that the memory 9312 stores a portion of the corresponding computer program instructions and / or data, including the computer program instructions and / or data currently required to be executed by the processor core 9311. The memory 9312 can store different portions of computer program instructions and / or data multiple times for execution by the processor core 9311 to implement the relevant operations in the above method embodiments. The interface circuit 9314 serves as a communication interface for communication with other components, such as transmitting signals with the radio frequency processing system 920, communicating with other subsystems and related components of the processor system 930 via a bus, such as transmitting data control signals with the application processor 932, and transmitting data or computer program instructions with the memory 936 or memory 960. Optionally, in order to reduce the load on the processor core, a baseband signal processing circuit 9313 can be set to perform at least some baseband signal processing, including one or more of signal demodulation, modulation, encoding or decoding.

[0300] In one example, the communication device provided in this application may be a first device 900, including a communication module comprising a processor system 930 and a radio frequency processing system 920, or a baseband processor 931.

[0301] The processor, processor system, application processor, baseband processor, processor circuit, or processor core mentioned above can be collectively referred to as a processor. The processor may include one or more of the following: central processing unit (CPU), digital signal processor (DSP), microprocessor unit (MPU), microcontroller unit (MCU), graphics processing unit (GPU), field programmable gate array (FPGA), artificial intelligence processor (AI processor), or neural processing unit (NPU).

[0302] The aforementioned memory may include one or more of the following storage media: random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), phase-change memory (PCM), resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), cache, register, read-only memory (ROM), flash memory, erasable programmable read-only memory (EPROM), hard disk, etc. In one example, computer program instructions for executing the above embodiments may be stored on non-volatile memory, such as at least a portion of the aforementioned memory 960 (e.g., one or more of ROM, flash memory, EPROM, or hard disk). When the first device is running, the corresponding computer program instructions may be partially or wholly loaded onto a memory with a faster transfer speed than the processor, such as at least a portion of memory 936 and / or memory 9312 (e.g., one or more of RAM, SRAM, DRAM, PCM, RERAM, MRAM, FRAM, cache, or register), for the processor to execute in order to implement the steps in the above method embodiments.

[0303] In one example, the RF transceiver 922 and the RF front-end 921 can also be packaged in a single chip. In another example, the RF transceiver 922, the RF front-end 921, and the baseband processor 931 can also be packaged in a single chip.

[0304] The terms "system" and "network" used in the embodiments of this application are interchangeable. Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) containing computer-usable program code.

[0305] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in one or more blocks of the flowchart illustrations and / or one or more blocks of the block diagrams.

[0306] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and / or one or more block diagrams.

[0307] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and / or one or more block diagrams.

[0308] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. An information reporting method, characterized in that, Applied to a first device, the method includes: Receive the first reference signal in the first frequency band; Multiple sets of first information associated with the first reference signal are transmitted, and the multiple sets of first information correspond one-to-one with multiple antenna port modes of the first device in the first frequency band.

2. The method according to claim 1, characterized in that, The multiple sets of first information include first information corresponding to the first antenna port mode and first information corresponding to the second antenna port mode; the first antenna port mode is the mode in which the first device uses only a dedicated antenna port in the first frequency band; the second antenna port mode is the mode in which the first device uses both a dedicated antenna port and a shared antenna port in the first frequency band; the shared antenna port is the antenna port shared by the first device on multiple frequency bands, and the multiple frequency bands include the first frequency band.

3. The method according to claim 2, characterized in that, The method further includes: Receive configuration information, the configuration information being used to configure a first resource, the first resource including a first resource corresponding to the dedicated antenna port and a first resource corresponding to the shared antenna port; Based on the antenna port mode used in the first frequency band, a second reference signal is transmitted on the first resource corresponding to the dedicated antenna port and / or the first resource corresponding to the shared antenna port.

4. The method according to claim 3, characterized in that, The first resource corresponding to the dedicated antenna port and the first resource corresponding to the shared antenna port are located within the first resource set; wherein: The first resource in the first resource set corresponds to a dedicated antenna port or a shared antenna port, which is predetermined; or, the method further includes: receiving first indication information, wherein the first indication information indicates that the first resource in the first resource set corresponds to a dedicated antenna port or a shared antenna port.

5. The method according to claim 3, characterized in that, The first resource corresponding to the dedicated antenna port is located within a first resource set, and the first resource corresponding to the shared antenna port is located within a second resource set; the first resource set and the second resource set are associated; wherein: The first resource in the first resource set corresponds to a dedicated antenna port, and the first resource in the second resource set corresponds to a shared antenna port, which is predetermined; or, the method further includes: receiving second indication information, the second indication information indicating that the first resource in the first resource set corresponds to a dedicated antenna port, and the first resource in the second resource set corresponds to a shared antenna port.

6. The method according to any one of claims 2 to 5, characterized in that, The method further includes: Send a third indication message, which indicates the number of dedicated antenna ports and the number of shared antenna ports of the first device in the first frequency band.

7. The method according to any one of claims 1 to 6, characterized in that, The method further includes: Send a fourth instruction message, which indicates the target first information among the multiple sets of first information.

8. The method according to any one of claims 1 to 6, characterized in that, The method further includes: Receive fifth instruction information, which indicates the target first information among the multiple sets of first information.

9. An information reporting method, characterized in that, Applied to a second device, the method includes: Transmit the first reference signal in the first frequency band; Receive multiple sets of first information associated with the first reference signal from the first device, wherein the multiple sets of first information correspond one-to-one with multiple antenna port modes of the first device in the first frequency band.

10. The method according to claim 9, characterized in that, The multiple sets of first information include first information corresponding to the first antenna port mode and first information corresponding to the second antenna port mode; the first antenna port mode is the mode in which the first device uses only a dedicated antenna port in the first frequency band; the second antenna port mode is the mode in which the first device uses both a dedicated antenna port and a shared antenna port in the first frequency band; the shared antenna port is the antenna port shared by the first device on multiple frequency bands, and the multiple frequency bands include the first frequency band.

11. The method according to claim 10, characterized in that, The method further includes: Send configuration information to the first device. The configuration information is used to configure the first resource, which includes the first resource corresponding to the dedicated antenna port and the first resource corresponding to the shared antenna port. Based on the antenna port mode used by the first device in the first frequency band, a second reference signal from the first device is received on the first resource corresponding to the dedicated antenna port and / or the first resource corresponding to the shared antenna port.

12. The method according to claim 11, characterized in that, The first resource corresponding to the dedicated antenna port and the first resource corresponding to the shared antenna port are located within the first resource set; wherein: The first resource in the first resource set corresponds to a dedicated antenna port or a shared antenna port, which is predetermined; or, the method further includes: sending first indication information to the first device, wherein the first indication information indicates that the first resource in the first resource set corresponds to a dedicated antenna port or a shared antenna port.

13. The method according to claim 11, characterized in that, The first resource corresponding to the dedicated antenna port is located within a first resource set, and the first resource corresponding to the shared antenna port is located within a second resource set; the first resource set and the second resource set are associated; wherein: The first resource in the first resource set corresponds to a dedicated antenna port, and the first resource in the second resource set corresponds to a shared antenna port, which is predetermined; or, the method further includes: sending a second indication information to the first device, the second indication information indicating that the first resource in the first resource set corresponds to a dedicated antenna port, and the first resource in the second resource set corresponds to a shared antenna port.

14. The method according to any one of claims 11 to 13, characterized in that, The configuration information is determined based on the number of dedicated antenna ports and the number of shared antenna ports of the first device in the first frequency band.

15. The method according to any one of claims 10 to 14, characterized in that, The method further includes: Receive third indication information from the first device, the third indication information indicating the number of dedicated antenna ports and the number of shared antenna ports of the first device in the first frequency band.

16. The method according to any one of claims 9 to 15, characterized in that, The method further includes: Receive a fourth indication information from the first device, the fourth indication information indicating the target first information among the multiple sets of first information.

17. The method according to any one of claims 9 to 15, characterized in that, The method further includes: Send a fifth instruction message to the first device, the fifth instruction message indicating the target first information among the multiple sets of first information.

18. A communication device comprising a module for performing the method as claimed in any one of claims 1 to 17.

19. A communication device, characterized in that, The device includes a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices and transmit them to the processor or to send signals from the processor to other communication devices, and the processor is used to implement the method as described in any one of claims 1 to 17 through logic circuits or executing code instructions.

20. A computer-readable storage medium, characterized in that, The storage medium stores a computer program or instructions, which, when executed by a communication device, implement the method as described in any one of claims 1 to 17.

21. A computer program product, comprising a computer program or instructions, characterized in that, When the computer program or instructions are executed by the communication device, the method as described in any one of claims 1 to 17 is implemented.

Images