Port indication method and apparatus, and device and storage medium

Abstract

A port indication method and apparatus, and a device and a storage medium, which relate to the technical field of communications. The method is executed by a first device, and comprises: receiving first indication information sent by a second device, wherein the first indication information is used for indicating a first number of ports, and the number of ports of a first reference signal resource that the first device measures is less than or equal to the first number of ports (210). By means of the method, a second device can dynamically adjust a first number of ports. When a service has higher requirements for data transmission, a first device can perform measurement on a larger number of ports of a first reference signal resource, thereby ensuring the normal operation of the service. When the service has lower requirements for data transmission, the first device can perform measurement on a smaller number of ports of the first reference signal resource, thereby reducing computing resources and / or storage resources occupied when the first device performs measurement on the ports of the first reference signal resource, and thus reducing the power consumption of the first device.

Description

Port indication method, apparatus, device and storage medium TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of communication, and particularly relate to a port indication method, apparatus, device and storage medium. BACKGROUND

[0002] Businesses are often dynamic, and the transmission rate requirements are also dynamic. In order to effectively reduce power consumption, network devices and terminal devices need to be able to better adapt to current transmission requirements, for example, when the business transmission rate is low, the network device can decide whether to close part of the sending channel; when the business transmission rate is high, whether to open part of the sending channel. The closing and opening of the sending channel can affect the number of ports corresponding to the CSI-RS (Channel State Information Reference Signal) resource. How to inform the terminal device of the change of the number of ports corresponding to the CSI-RS resource still needs further discussion and research.

[0003] SUMMARY

[0004] Embodiments of the present application provide a port indication method, apparatus, device and storage medium. The technical solutions provided by the embodiments of the present application are as follows:

[0005] According to an aspect of the embodiments of the present application, a port indication method is provided, the method is executed by a first device, and the method comprises:

[0006] receiving first indication information sent by a second device, the first indication information being used to indicate a first port number, and a port number used by the first device to measure a first reference signal resource being less than or equal to the first port number.

[0007] According to an aspect of the embodiments of the present application, a port indication method is provided, the method is executed by a second device, and the method comprises:

[0008] sending first indication information to a first device, the first indication information being used to indicate a first port number, and a port number used by the first device to measure a first reference signal resource being less than or equal to the first port number.

[0009] According to an aspect of the embodiments of the present application, a port indication apparatus is provided, the apparatus comprises:

[0010] a receiving module, configured to receive first indication information sent by a second device, the first indication information being used to indicate a first port number, and a port number used by the first device to measure a first reference signal resource being less than or equal to the first port number.

[0011] According to an aspect of the embodiments of the present application, a port indication device is provided, the device comprising:

[0012] a sending module configured to send first indication information to a first device, the first indication information being used to indicate a first port number, and a port number of a first reference signal resource measured by the first device being less than or equal to the first port number.

[0013] According to an aspect of the embodiments of the present application, a communication device is provided, the communication device comprising a processor and a memory, the memory storing a computer program, and the processor executing the computer program to implement the above-mentioned port indication method.

[0014] According to an aspect of the embodiments of the present application, a computer readable storage medium is provided, the storage medium storing a computer program, and the computer program being used to be executed by a processor to implement the above-mentioned port indication method.

[0015] According to an aspect of the embodiments of the present application, a chip is provided, the chip comprising a programmable logic circuit and / or program instructions, and when the chip is running, the chip is used to implement the above-mentioned port indication method.

[0016] According to an aspect of the embodiments of the present application, a computer program product is provided, the computer program product comprising computer instructions, the computer instructions being stored in a computer readable storage medium, and a processor reading and executing the computer instructions from the computer readable storage medium to implement the above-mentioned port indication method.

[0017] The technical solutions provided by the embodiments of the present application can have the following beneficial effects:

[0018] The second device indicates a first port number to the first device, and a port number of a first reference signal resource measured by the first device is less than or equal to the first port number. The second device dynamically adjusts the first port number. When the requirement of service transmission data is high, the first device can measure more ports of the first reference signal resource to ensure the normal operation of the service. When the requirement of service transmission data is low, the first device can measure a small number of ports of the first reference signal resource to reduce the calculation resources and / or storage resources occupied by the first device in measuring the ports of the first reference signal resource, and reduce the power consumption of the first device. BRIEF DESCRIPTION OF DRAWINGS

[0019] FIG. 1 is a schematic diagram of a network architecture provided by an embodiment of the present application;

[0020] FIG. 2 is a flow chart of a port indication method provided by an embodiment of the present application;

[0021] Figure 3 is a block diagram of a port indication apparatus according to an embodiment of the present application;

[0022] Figure 4 is a block diagram of a port indication apparatus according to another embodiment of the present application;

[0023] Figure 5 is a structural diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0024] For the purpose of making the technical scheme, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0025] The network architecture and service scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. It can be known by those skilled in the art that, with the evolution of network architecture and the appearance of new service scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0026] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system, New Radio (NR) system, evolved system of NR system, LTE-based access to unlicensed spectrum (LTE-U) system, NR-based access to unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), 5th-Generation (5G) system, B5G (Beyound 5G) system, 6th-Generation (6G) system or other communication systems, etc.

[0027] Generally, the traditional communication system supports a limited number of connections, which is easy to implement. However, with the development of communication technology, the mobile communication system will not only support the traditional communication, but also support, for example, Device to Device (D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0028] The communication system in the embodiments of the present application can be applied to a carrier aggregation (CA) scenario, can also be applied to a dual connectivity (DC) scenario, and can also be applied to a standalone (SA) network deployment scenario.

[0029] The communication system in the embodiments of the present application can be applied to an unlicensed spectrum, which can also be regarded as a shared spectrum, or can also be applied to a licensed spectrum, which can also be regarded as a non-shared spectrum.

[0030] The embodiments of the present application can be applied to a non-terrestrial network (NTN) system, and can also be applied to a terrestrial network (TN) system. The NTN generally adopts a satellite communication mode to provide communication services to ground users. The NTN system currently includes an NR-NTN and an IoT-NTN system, and other NTN systems can be included in the future.

[0031] Please refer to FIG. 1, which shows a schematic diagram of a network architecture 100 provided by an embodiment of the present application. The network architecture 100 can include a terminal device 10, an access network device 20, and a core network element 30.

[0032] The terminal device 10 can refer to a UE (User Equipment), an access terminal device, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal device, a mobile device, a wireless communication device, a user agent, or a user apparatus. In some embodiments, the terminal device 10 can also be a cellular phone, a cordless phone, a SIP (Session Initiation Protocol) phone, a WLL (Wireless Local Loop) station, a PDA (Personal Digital Assistant), a handheld device with wireless communication function, a computing device, or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5GS (5th Generation System), or a terminal device in a future evolved PLMN (Public Land Mobile Network), etc., and the embodiments of the present application are not limited thereto. For the convenience of description, the above-mentioned devices are collectively referred to as terminal devices. The number of terminal devices 10 is usually multiple, and one or more terminal devices 10 can be distributed in the cell managed by each access network device 20. The terminal device can also be referred to simply as a terminal device or a UE, and those skilled in the art can understand its meaning.

[0033] The access network device 20 is a device deployed in an access network to provide wireless communication functions for the terminal device 10. The access network device 20 can include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems using different wireless access technologies, the names of devices with access network device functions can be different, for example, in a 5G NR system, it is called gNodeB or gNB. As communication technology evolves, the name of the "access network device" may change. For ease of description, in the embodiments of the present application, the above-mentioned devices that provide wireless communication functions for the terminal device 10 are collectively referred to as access network devices. In some embodiments, through the access network device 20, a communication relationship can be established between the terminal device 10 and the core network element 30. Illustratively, in the LTE (Long Term Evolution) system, the access network device 20 can be an EUTRAN (Evolved Universal Terrestrial Radio Access Network) or one or more eNodeBs in the EUTRAN; in the 5G NR system, the access network device 20 can be a RAN (Radio Access Network) or one or more gNBs in the RAN. In the embodiments of the present application, the "network device" refers to the access network device 20, such as a base station, unless otherwise specified.

[0034] The core network element 30 is a network element deployed in the core network, and the main functions of the core network element 30 are to provide user connection, manage users, and complete bearer for services, and to provide an interface to external network devices as a bearer network device. For example, the core network element in the 5G NR system can include AMF (Access and Mobility Management Function) entities, UPF (User Plane Function) entities, and SMF (Session Management Function) entities.

[0035] In some embodiments, the access network device 20 and the core network element 30 communicate with each other through some air interface technology, such as the NG interface in the 5G NR system. The access network device 20 and the terminal device 10 communicate with each other through some air interface technology, such as the Uu interface.

[0036] The "5G NR system" in the embodiments of the present application can also be referred to as a 5G system or an NR system, but those skilled in the art can understand its meaning. The technical solutions described in the embodiments of the present application can be applicable to an LTE system, a 5G NR system, an evolved system (such as a B5G (Beyound 5G) system, a 6G system (6th Generation System, the sixth generation mobile communication system)) after the 5G NR system, and other communication systems such as an NB-IoT (Narrow Band Internet of Things, narrowband Internet of Things) system, and the present application does not limit this.

[0037] In the embodiments of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through transmission resources (for example, frequency domain resources, or spectrum resources) on a carrier used by the cell. The cell can be a cell corresponding to the network device (for example, a base station), and the cell can belong to a macro base station or a base station corresponding to a small cell (Small cell). The small cell can include a metro cell, a micro cell, a pico cell, a femto cell, and the like. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-speed data transmission services.

[0038] Before introducing the technical solutions of the present application, the related technologies involved in the present application are introduced and explained. The following related technologies can be combined with the technical solutions of the embodiments of the present application in any way, and all belong to the protection scope of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0039] 1. MIMO (Multiple Input Multiple Output, multiple input multiple output) transmission

[0040] MIMO has been widely used in wireless communication systems, such as 3G, 4G (LTE), 5G (NR), and WiFi (Wireless Fidelity, wireless fidelity technology). Using MIMO technology, various forms of gains can be obtained:

[0041] · Spatial diversity gain

[0042] · Beamforming gain (precoding gain)

[0043] · Spatial multiplexing gain

[0044] In order to obtain beamforming gain (also called precoding gain) or spatial multiplexing gain, the sending end needs to determine a beamforming matrix (or precoding matrix) to perform signal transmission. For the sake of simplicity, the following "precoding" and "beamforming" will be used interchangeably, and no distinction will be made. That is, using any one of the terms, the description can be applied to "precoding" or "beamforming".

[0045] The determination of the precoding matrix often needs to be based on the corresponding transmission channel information. In some embodiments, on this basis, the determination of the precoding matrix can also be based on the channel information, interference information, etc. of the multi-user MIMO paired user. Therefore, a basic requirement for the determination of the precoding matrix for terminal device A is to obtain some form of channel information of the transmission channel corresponding to terminal device A.

[0046] In actual systems, in order to obtain the channel information of the transmission channel corresponding to terminal device A, there are two main methods:

[0047] 1. Feedback method: Network device B sends a reference signal X (such as a CSI-RS signal), terminal device A measures and obtains the information of the corresponding downlink channel according to the reference signal X, and then determines the corresponding channel feedback information, which can include some forms (partially or entirely) as follows. Network device B determines the corresponding precoding matrix for terminal device A according to the information fed back by terminal device A, and sends PDSCH (Physical Downlink Shared Channel) or PDCCH (Physical Downlink Control Channel) or other downlink channels or downlink reference signals to terminal device A.

[0048] a. RI (Rank Indicator, rank information, corresponding to the recommended transmission stream number of terminal device)

[0049] b. CQI (Channel Quality Indicator, MCS (Modulation and Coding Scheme) related information)

[0050] c. PMI (Precoding Matrix Indicator, codebook information)

[0051] 2. Method based on channel reciprocity: terminal device A sends SRS (Sounding Reference Signal) information according to the configuration information of network device B, network device B measures the corresponding uplink channel according to the received SRS information, and according to the reciprocity of the uplink and downlink channels, network device B can determine the corresponding precoding matrix of terminal device A for sending PDSCH or PDCCH, or other downlink channels or downlink reference signals.

[0052] The feedback method can be used in TDD systems and FDD systems; and the method based on channel reciprocity is generally mainly used in TDD (Time Division Duplex) systems, and can also be used in FDD (Frequency Division Duplex) systems with partial reciprocity (protocols will not limit).

[0053] In order to obtain a higher transmission rate, the network device often uses multi-stream MIMO to send multiple data streams to a UE.

[0054] With the evolution of antenna technology, the number of antennas that can be supported on both the network device side and the UE side is increasing. In particular, with the gradual use of centimeter wave frequency bands in the future, the number of antennas may further increase. Correspondingly, the number of data streams of MIMO transmission is also gradually increasing. In order to support more stream number of MIMO transmission, the CSI-RS signal is often configured with more ports.

[0055] On the one hand, the increase in the number of antennas can increase the number of MIMO transmission streams, thereby increasing the rate. On the other hand, the increase in the number of antennas will increase the power consumption of the network device and the UE. With the increasing demand for carbon in the industry, the concept of green communication is gradually adopted by the communication industry, so how to effectively reduce power consumption will be an important principle for the evolution and design of wireless communication systems.

[0056] When the traffic is large, more stream MIMO transmission can complete data transmission as soon as possible, and when the traffic is small, the number of MIMO transmission streams is reduced, which can also meet the business demand, and at the same time, the network device and the UE can close part of the sending and / or receiving channels, thereby reducing the power consumption. When the maximum number of MIMO transmission streams is reduced, the number of CSI-RS ports may also be reduced, thereby reducing the power consumption of the network device.

[0057] Another case, when there are less users in the network device, and the overall traffic of the cell is small, at this time, it may not need to support MU MIMO (Multi-User MIMO), only need to support SU MIMO (Single-User MIMO), then even if the number of MIMO streams for scheduling is unchanged, the network device may close part of the transmission channel to save energy, at this time, it will also cause the change of the number of CSI-RS ports.

[0058] Because of the transmission of CSI-RS, it needs to be based on its corresponding CSI-RS resource, so they are tightly bound. For this reason, in the description of the embodiments of the present application, the CSI-RS and the CSI-RS resource are not distinguished in use, that is, the CSI-RS can refer to the transmitted CSI-RS, and can also refer to the corresponding CSI-RS resource.

[0059] 2, Configuration / indication of the number of CSI-RS ports

[0060] The change of the service is often dynamic. In theory, if the network device / terminal device can quickly open / close the transmission and / or reception channel according to the change of the service, then the network device and the terminal device can both reduce the power consumption as much as possible to achieve the purpose of energy saving.

[0061] In the 5G system, there are some methods to relatively dynamically indicate the CSI-RS port, and the following gives a brief introduction.

[0062] Method one: through RRC reconfiguration

[0063] If the network device finds that the current traffic is very small, and does not need a large data transmission speed, at this time, the network device can close part of the transmission channel, so as to reduce the power consumption of the network device. At this time, the network device can reconfigure through RRC (Radio Resource Control) signaling to inform the UE that some CSI-RS with a relatively reduced number of ports.

[0064] Method two: based on network device implementation

[0065] The network device configures CSI-RSs with different numbers of ports through RRC signaling, for example, some CSI-RSs have a large number of ports and some CSI-RSs have a small number of ports. If the network device finds that the current traffic is small and a large data transmission speed is not needed, the network device can close some transmission channels to reduce the power consumption of the network device. At this time, the network device can only instruct the UE to measure some CSI-RSs with a small number of ports when triggering the terminal device to perform CSI measurement / reporting, without changing the related information through RRC reconfiguration.

[0066] Method three: based on sub configuration

[0067] In the 5G system, for some CSI-RSs, corresponding sub configurations can be configured, and the sub configurations can only be for part of the ports of the CSI-RSs. If the network device finds that the current traffic is small and a large data transmission speed is not needed, the network device can close some transmission channels to reduce the power consumption of the network device. At this time, the network device triggers the terminal device to perform CSI measurement / reporting according to the sub configuration. However, the corresponding trigger state must also include an original normal configuration when the network device triggers the sub configuration each time, so in this trigger state, the UE needs to measure all the ports of at least one CSI-RS.

[0068] The above-mentioned several schemes have certain limitations:

[0069] Method one: RRC reconfiguration has the following limitations:

[0070] Large signaling overhead;

[0071] Long delay caused by RRC signaling reconfiguration.

[0072] Method two: not friendly to UE energy saving, because the UE knows which CSI-RS to measure only when the UE receives the trigger information of the network device, which limits the optimization of UE energy saving (for example, the UE cannot close part of the hardware resources in advance).

[0073] Method three: based on sub configuration, which has the following disadvantages: 1. The scheme is relatively complex, which makes the product implementation more complex; 2. The UE knows which CSI-RS to measure only when the UE receives the trigger information of the network device, which limits the optimization of UE energy saving; 3. Some CSI-RSs still need to measure all the ports.

[0074] As introduced before, the service is often dynamically changed, and the requirement of transmission rate is also dynamically changed. In order to effectively reduce the power consumption, the network device and the terminal device need to better adapt to the current transmission requirement. The embodiment of the present application provides a port indication method. When the service transmission rate is low, the network device can decide whether to close part of the sending channel; when the service transmission rate is high, whether to open part of the sending. The closing and opening of the sending channel can affect the number of CSI-RS ports. Dynamically informing the terminal device about the CSI-RS port information can have many benefits, for example:

[0075] The terminal device can measure and report more accurate CSI information.

[0076] The terminal device can close part of the hardware resources (such as the number of receiving channels, and / or part of the computing resources), so as to achieve the purpose of saving power consumption.

[0077] Please refer to FIG. 2, which shows a flowchart of the port indication method provided by an embodiment of the present application, and the method is executed by a first device. The method includes the following step 210.

[0078] Step 210: The first device receives first indication information sent by a second device, the first indication information is used to indicate a first port number, and the number of ports used by the first device to measure a first reference signal resource is less than or equal to the first port number.

[0079] Correspondingly, the second device sends the first indication information.

[0080] In some embodiments, the first device is a terminal device. In some embodiments, the second device is a terminal device, or the second device is a network device. In one example, the method can be applied in the communication process between the terminal device and the network device, the first device is the terminal device, and the second device is the network device. In one example, the method can be applied in the terminal device sidelink communication process, and the first device and the second device are both terminal devices.

[0081] Optionally, the first reference signal resource includes a time-frequency resource used to transmit a first reference signal. Illustratively, the first reference signal can be any reference signal. For example, the first reference signal can be a CSI-RS.

[0082] Optionally, the first port number is less than or equal to a second port number. The second port number is the maximum number of ports corresponding to one or more reference signal resources in a first reference signal resource group. The first reference signal resource group contains the first reference signal resource. The first reference signal resource group is a resource set used for the first device and the second device to transmit the first reference signal.

[0083] Optionally, the first reference signal resource group is indicated by the second device. Illustratively, the first reference signal resource group is configured by the second device through RRC signaling. In some embodiments, the second port number is indicated by the second device. Illustratively, the second port number is configured by the second device through RRC signaling. In one example, after the second device indicates the first reference signal resource group, the first device determines the second port number based on the first reference signal resource group. In one example, the second device indicates the first reference signal resource group and the second port number corresponding to the first reference signal resource group.

[0084] The first port number is a positive integer. The second port number is a positive integer. In one example, the first port number is a positive integer less than or equal to the second port number.

[0085] Optionally, the first port number belongs to a first set, and the first set contains one or more candidate numbers corresponding to the value of the port number corresponding to the first reference signal resource. It should be noted that the first set is only introduced for the convenience of description, and the first set can actually exist or can not exist. In one example, the elements of the first set are predefined or preconfigured. In one example, the first set is indicated by the second device. Illustratively, the first set is configured by the second device through RRC signaling. In some embodiments, the above-mentioned candidate numbers are determined based on the second port number. In one example, the above-mentioned candidate numbers are all less than or equal to the second port number.

[0086] Optionally, the RRC signaling is used to configure one or more of the following information: the first reference signal resource group, the second port number, the first set. Illustratively, the RRC signaling is used to configure that the first reference signal resource group includes reference signal resources 1-4, and / or the second port number is 8, and / or the first set is {2, 4, 6, 8}.

[0087] Optionally, the first indication information can indicate the first port number in multiple ways. Illustratively, the following ways 1-3 can be included.

[0088] Way 1, the first indication information indicates the value of the first port number

[0089] The first indication information is used to indicate the specific value of the first port number. Illustratively, the first indication information is used to indicate that the value of the first port number is 4.

[0090] Way 2, the first indication information indicates the index of the first port number in the first set

[0091] Optionally, in a case that the second device configures the first set for the first device, or in a case that the first set is predefined, the first indication information can further indicate an index (or a number) of the first port number in the first set. In an example, the first set indicates a correspondence between the index and the candidate number in a form of (x, y). For example, x represents the index, and y represents a value of the candidate number. Exemplarily, the first set is {(0, 2), (1, 4), (2, 6), (4, 8)}. Exemplarily, the first indication information indicates 2, indicating that the first port number is 6. In an example, the first set indicates the correspondence between the index and the candidate number in a sequence (e.g., a position sequence) of the candidate number. Exemplarily, the first set is {2, 4, 6, 8}. Exemplarily, if the first indication information indicates 0, the first port number is 2; if the first indication information indicates 1, the first port number is 4; if the first indication information indicates 2, the first port number is 6; and if the first indication information indicates 3, the first port number is 8. In an example, the first set can also indicate the correspondence between the index and the candidate number in a form of a list, which is not limited in the present application.

[0092] Optionally, whether the first indication information indicates a specific value of the first port number or an index of the first port number in the first set can be pre-configured or pre-defined, or indicated by the network device. Exemplarily, the pre-configuration or pre-definition is that, in a case that the first device receives the first set, the first indication information indicates the index of the first port number in the first set. Exemplarily, the first indication information further indicates the first type or the second type. The first type indicates that the first indication information indicates the specific value of the first port number, and the second type indicates that the first indication information indicates the index of the first port number in the first set.

[0093] Optionally, the first indication information indicates the first type and / or the second type.

[0094] Optionally, if the first indication information further indicates the first type or the second type, the following cases can be included:

[0095] 1. The first indication information includes the first type, indicating that the first indication information indicates the specific value of the first port number; and the first indication information does not include the first type, indicating that the first indication information indicates the index of the first port number in the first set.

[0096] 2. The first indication information includes the second type, indicating that the first indication information indicates the index of the first port number in the first set; and the first indication information does not include the second type, indicating that the first indication information indicates the specific value of the first port number.

[0097] 3. The first indication information includes a first type, indicating that a specific value of the first port number is indicated in the first indication information; or the first indication information includes a second type, indicating that an index of the first port number in the first set is indicated in the first indication information.

[0098] In one example, if the requirement of service transmission data is high, the second device can configure a larger first port number, for example, configure the first port number to be equal to the second port number. In one example, if the requirement of service transmission data is reduced, the second device can close part of the antenna panels used for service transmission data, and accordingly, the port number of the reference signal resource that the first device needs to measure is also reduced, that is, the first port number is reduced. Reducing the port number of the reference signal resource that the first device needs to measure can effectively reduce the resource consumption of the first device, which is conducive to realizing the energy saving of the first device.

[0099] The technical scheme provided by the embodiments of the present application indicates a first port number for the first device by the second device, and the port number of the first reference signal resource that the first device needs to measure is less than or equal to the first port number. The first port number is dynamically adjusted by the second device. When the requirement of service transmission data is high, the first device can measure more ports of the first reference signal resource to ensure the normal operation of the service. When the requirement of service transmission data is low, the first device can measure a small number of ports of the first reference signal resource, reduce the calculation resources and / or storage resources occupied by the first device for measuring the ports of the first reference signal resource, and reduce the power consumption of the first device.

[0100] In some embodiments, the first indication information can be indicated by a physical layer or indicated by an upper layer (for the sake of simplifying the description, sometimes referred to as the upper layer of the physical layer). The upper layer refers to a protocol layer above the physical layer.

[0101] In some embodiments, the first indication information is carried in first information, and the first information is upper layer information (or referred to as upper layer signaling), or the first information is physical layer information (or referred to as physical layer signaling). The upper layer information refers to information sent by the upper layer of the physical layer. Exemplarily, the first information is MAC CE (Media Access Control Element) signaling. The physical layer information refers to information sent by the physical layer. Exemplarily, the first information is DCI (Downlink Control Information).

[0102] I. Content of the first information

[0103] In addition to the first indication information, the first information can further indicate other information related to the first indication information.

[0104] Optionally, the first information further comprises one or more of the following information:

[0105] First cell information, the first cell information being used to indicate a cell to which the first information belongs;

[0106] First BWP (Bandwidth Part) information, the first BWP information being used to indicate a BWP to which the first information belongs;

[0107] Second cell information, the second cell information being used to indicate one or more first cells to which the first information applies;

[0108] Second BWP information, the second BWP information being used to indicate one or more first BWPs to which the first information applies;

[0109] Modulation and coding information;

[0110] Rank information;

[0111] Scheduling offset information;

[0112] Flow number information.

[0113] The first cell information is used to indicate a cell to which the first information belongs. Optionally, the cell to which the first information belongs refers to a cell in which the first information is transmitted. Optionally, the cell to which the first information belongs refers to an information that the first information belongs to the cell, or in other words, the first information is an information corresponding to the cell. In an example, the first cell information is used to indicate identification information of the cell to which the first information belongs. Illustratively, the first cell information is used to indicate that the cell to which the first information belongs is the C1th cell. The first information can be applied to the cell indicated by the first cell information.

[0114] The first BWP information is used to indicate a BWP to which the first information belongs. Optionally, the BWP to which the first information belongs refers to a BWP in which time-frequency resources occupied by the first information are located. Optionally, the BWP to which the first information belongs refers to an information that the first information belongs to the BWP, or in other words, the first information is an information corresponding to the BWP. In an example, the first BWP information is used to indicate identification information of the BWP to which the first information belongs. Illustratively, the first BWP information is used to indicate that the BWP to which the first information belongs is the W1th BWP.

[0115] The second cell information is used to indicate an application range of the first information in a cell, and the application range includes one or more first cells.

[0116] The second BWP information is used to indicate a BWP application scope of the first information, and the application scope includes one or more first BWPs.

[0117] The second cell information and / or the second BWP information can be indicated in a list form, or can be indicated in a bitmap form, or can be indicated by a plurality of indication fields or a plurality of bits. For example, the second cell information can indicate a list including one or more first cells. For example, the second cell information includes one or more indication fields, and each indication field is used to indicate a first cell. For example, the second cell information includes one or more bits, and each bit is used to indicate a first cell. For example, the second BWP information can indicate a list including one or more first BWPs. For example, the second BWP information includes one or more indication fields, and each indication field is used to indicate a first BWP. For example, the second BWP information includes one or more bits, and each bit is used to indicate a first BWP.

[0118] The first information can further include modulation and coding information. For example, the first information can further include MCS. For example, the first information can further include modulation information, such as a modulation mode adopted (but does not include coding or code rate related information). In the embodiments of the present application, for the convenience of description, “modulation and coding” can refer to both modulation and coding, or only modulation. The modulation and coding information is used to indicate one or more modulation and coding (wherein the one or more modulation and coding can be referred to as one or more modulation and coding configurations, or one or more modulation and coding combinations). In one example, the modulation and coding mode used by the first device is determined based on the modulation and coding information.

[0119] In one example, the modulation and coding information is used to indicate a first modulation and coding set and / or a second modulation and coding set, the first modulation and coding set includes one or more first modulation and coding, and the second modulation and coding set includes one or more second modulation and coding. For example, the first modulation and coding is a modulation and coding allowed to be used by the first device, and the second modulation and coding is a modulation and coding not allowed to be used by the first device. For example, the first modulation and coding is a modulation and coding that the first device can be indicated to use for transmission, and the second modulation and coding is a modulation and coding that the first device will not be indicated to use for transmission. In some embodiments, there is no same modulation and coding in the first modulation and coding set and the second modulation and coding set.

[0120] In one example, the modulation and coding used by the first device is a third modulation and coding set, the third modulation and coding set including one or more of the first modulation and coding. Illustratively, if the modulation and coding information is used to indicate the first modulation and coding set, the third modulation and coding set is a subset of the first modulation and coding set. Illustratively, if the modulation and coding information is used to indicate the second modulation and coding set, the third modulation and coding set has no same modulation and coding as in the second modulation and coding set.

[0121] If the Rank information indicates that the maximum feedback rank number is X1, the Rank information included in the reference signal measurement report sent by the first device to the second device indicates a rank number less than or equal to X1. In one example, the Rank information is used to indicate a first stream number, and if the number of transmission data streams suggested by the first device in the measurement report to the second device is a second stream number, the second stream number is less than or equal to the first stream number.

[0122] The scheduling and offset information is used to indicate the first time interval and / or the second time interval. In one example, the time interval between the scheduling information and the scheduled information is greater than or equal to the first time interval. In one example, the time interval between the scheduling information and the scheduled information is less than or equal to the second time interval. In some embodiments, the first time interval and the second time interval can be predefined or preconfigured, or indicated by the second device. Illustratively, the scheduling information is PDCCH, the scheduled information is PDSCH, the time interval between the PDCCH and the PDSCH is greater than or equal to the first time interval, and less than or equal to the second time interval. The advantage is that the setting of the first time interval ensures that the first device can receive and parse the scheduling information, so that the first device can correctly receive the scheduled information based on the scheduling information, avoiding retransmission of the scheduled information. The setting of the second time interval enables the first device to more efficiently use its own resources (hardware resources and / or computing resources), thereby reducing overall power consumption and increasing standby time.

[0123] The stream number information is used to indicate a third stream number. In one example, the number of MIMO streams of transmission data between the first device and the second device is a second stream number, and the second stream number is less than or equal to the third stream number. In one example, the first information can also be used to indicate a validity time of the third stream number, and the third stream number is valid within the validity time. If the validity time is exceeded, the third stream number is re-indicated by the second device, or the third stream number applies a default value.

[0124] It should be noted that the first information can include only the first indication information, or can include the first indication information and one or more of the above information. For the combination of information included in the first information, the present application will not be listed here.

[0125] II. Effectiveness of the first indication information

[0126] Optionally, the first indication information takes effect after a first application time. After the first indication information is received, the first device can determine whether to open a receiving channel according to the first port number indicated in the first indication information, the receiving channel being used to receive data and / or signaling sent by the second device. In this way, the understanding of the data transmission situation between the first device and the second device is consistent, and the problem of scheduling mismatch is avoided.

[0127] 2.1, effective range of the first application time

[0128] In one example, the first application time is applicable to any first indication information, that is, the first application time is irrelevant to the first port number. In this way, the implementation complexity of the first device can be reduced.

[0129] In one example, the first application time is applicable only when the first port number is larger than the last indicated first port number.

[0130] For example, when the first port number is larger than the third port number, the first indication information takes effect after the first application time, the third port number being the first port number indicated by the last received first indication information.

[0131] For example, when the first port number is larger than the third port number, the first indication information takes effect after the first application time. In some embodiments, when the first port number is smaller than or equal to the third port number, the first indication information takes effect at a first time, the first time being the time when the first indication information is received by the first device.

[0132] In one example, the third port number is the first port number originally used by the first device. In one example, the third port number is the first port number currently used by the first device. In other words, the first device receives an nth first indication information and an (n+1)th first indication information successively, n being a positive integer. Between the nth first indication information and the (n+1)th first indication information, the first device does not receive other first indication information. Then, the first port number indicated by the nth first indication information is the third port number relative to the first port number indicated by the (n+1)th first indication information. When the first port number is larger than the third port number, the first indication information takes effect after the first application time.

[0133] 2.2, determination manner of the first application time

[0134] Optionally, the first application time is determined based on the capability of the first device.

[0135] In an example, the capability of the first device is reported by the first device to the second device. Illustratively, the first device sends a report information to the second device, the report information being used to indicate the capability of the first device. How the first device reports the capability of the first device to the second device will be described in subsequent embodiments.

[0136] In an example, the first application time is predefined. Illustratively, the first application time is predefined, for example, specified by a protocol. The advantage is that the device implementation is simple.

[0137] In an example, the first application time is configured by the second device. Illustratively, the first application time is configured by RRC signaling or MAC CE signaling. The first application time is configured by the second device, which reduces the implementation complexity of the second device.

[0138] It should be noted that the determination manner of the first application time can be combined with the applicable range of the first application time in any manner to obtain a combined embodiment.

[0139] Next, the first information being physical layer information and the first information being upper layer information will be described respectively.

[0140] I. The first information is upper layer information

[0141] Optionally, the upper layer refers to the upper layer of the physical layer. Illustratively, in the 5G system, the upper layer can be the MAC layer, and the first information is the MAC CE signaling. Illustratively, the upper layer can also be a protocol layer other than the MAC layer, for example, the upper layer can be the RRC layer, or a fusion layer of the MAC layer and the RRC layer, etc. In some embodiments, the upper layer is a protocol layer based on the protocol implementation above the physical layer.

[0142] Taking the first information being the first MAC CE signaling as an example (this embodiment is also applicable to other signaling of the MAC layer, or to the RRC layer signaling), the first MAC CE signaling includes the first indication information.

[0143] In addition to the first indication information, the first MAC CE signaling can also include one or more of the following information:

[0144] First cell information, the first cell information being used to indicate a cell to which the first information belongs;

[0145] First BWP information, the first BWP information being used to indicate a BWP to which the first information belongs;

[0146] Second cell information, the second cell information being used to indicate one or more first cells to which the first information applies;

[0147] Second BWP information, the second BWP information being used for indicating one or more first BWPs, the first information being applied to the one or more first BWPs;

[0148] Modulation and coding information;

[0149] Rank information;

[0150] Scheduling offset information;

[0151] Number of streams information.

[0152] In one example, the first MAC CE signaling takes effect after the first application time. In one example, the first MAC CE signaling takes effect after the first application time in the case that the first number of ports is greater than the third number of ports.

[0153] The specific content included in the first MAC CE signaling and the taking effect time of the first MAC CE signaling can refer to the introduction of the first information in the above embodiments, which will not be described herein again.

[0154] II. The first information is physical layer information

[0155] Optionally, the physical layer information refers to information sent by a physical layer, for example, control information sent by a physical layer. Illustratively, the first information can be DCI or SCI (Sidelink Control Information).

[0156] 1. First indication field

[0157] Optionally, the first information is physical layer information, and the first information includes a first indication field, the first indication field being used for indicating first indication information (for example, used for indicating the first number of ports).

[0158] The first indication field can be a newly added indication field in the first information, or an existing indication field in the first information, wherein the existing indication field indicates other content when taking certain values, and indicates the first indication information when taking another certain values; or the existing indication field is used for indicating the first indication information after the second device sends an indication information (for example, an RRC configuration signaling); or the existing indication field indicates other content when taking certain values, and indicates the first indication information when taking another certain values after the second device sends an indication information (for example, an RRC configuration signaling). In one example, the first indication field is an information field (which can be referred to as a field) in the first information which is specially used for indicating the first number of ports. At this time, the structure of the first information is relatively simple, and the implementation complexity of the first information is reduced.

[0159] 1.1. Bit number of the first indication field

[0160] Optionally, the number of bits of the first indication field is determined based on the second port number. As an example, the second port number is the maximum number of ports corresponding to one or more reference signal resources in the first reference signal resource group, the first reference signal resource group including the first reference signal resource. As another example, the second port number is indicated by the second device through signaling.

[0161] Optionally, the number of bits of the first indication field can be indicated by the second device through signaling. As an example, the signaling can be RRC signaling, or MAC signaling, or a combination of RRC signaling and MAC signaling.

[0162] In one example, the number of bits of the first indication field is N, and the maximum number of indications supported is M, M is greater than or equal to the second port number, where N and M are positive integers. A typical implementation is that M is equal to the second port number. As an example, if the second port number is 32, then the number of bits N of the first indication field is greater than or equal to 5, and a typical implementation is that N = 5. It should be noted that the value of the first port number is usually not 0, so when the value of the first indication field is 0, it can be used to indicate other numbers. For example, when the value of the first indication field is 0, it indicates that the value of the first port number is 32, and when the value of the first indication field is not 0, the value of the first port number is the same as the value of the first indication field. As another example, when the value of the first indication field is G, it indicates that the value of the first port number is G+1, where G is a positive integer. The above description also applies to other examples of the number of bits of the indication field in the embodiments of the present application, and the present application will not repeat them. Since the first port number is less than or equal to the second port number, no matter what the value of the first port number is, the first indication field can indicate the first port number, and there is no need to adjust the number of bits of the first indication field based on the first port number, which has low implementation complexity.

[0163] In one example, the second device can indicate multiple reference signal resource groups to the first device, and the second port number can be the maximum of the second port numbers corresponding to the multiple reference signal resource groups. In this way, the second device also does not need to adjust the number of bits of the first indication field based on the reference signal resource group.

[0164] In some embodiments, the number of bits of the first indication field is configured by the second device. In one example, the number of bits of the first indication field is configured by the second device through RRC signaling.

[0165] 1.2, content indicated by the first indication field

[0166] Optionally, the first indication field is used for implicitly or explicitly indicating the first port number. Illustratively, the first indication field indicates content which has a mapping relationship with the first port number, and the first device can determine the first port number based on the mapping relationship. Illustratively, the first indication field directly indicates the first port number in a manner of explicitly indicating the first port number.

[0167] Optionally, the first indication field is used for indicating other information in addition to the first port number. In one example, the above-mentioned other information can refer to the indication content of the first information. Illustratively, the other information can include one or more of the first cell information, the second cell information, the first BWP information, the second BWP information, the modulation and coding information, the Rank information, the scheduling and offset information, and the stream number information.

[0168] Optionally, the content indicated by the first indication field is determined by the value of the first indication field.

[0169] In one example, when the value of the first indication field is a first value, the first indication field is used for indicating the first port number.

[0170] In one example, when the value of the first indication field is a second value, the first indication field is used for indicating information other than the first port number.

[0171] Illustratively, the value of the first indication field is the first value or the second value, where the first value can have one or more different first values, and the second value can have one or more different second values. In some embodiments, the correspondence between the first value and the first port number is predefined or preconfigured, or configured by the second device. Illustratively, the correspondence between the first value and the first port number is configured by RRC signaling or MAC CE signaling. In some embodiments, the correspondence between the second value and the information other than the first port number is predefined or preconfigured, or configured by the second device. Illustratively, the correspondence between the second value and the information other than the first port number is configured by RRC signaling or MAC CE signaling.

[0172] Illustratively, the first indication field includes a plurality of sub-indication fields. Among them, the first sub-indication field is used for indicating the first value, and the second sub-indication field is used for indicating the second value.

[0173] Illustratively, the first indication field is used for indicating a first information combination, and the first information combination at least contains the first port number. In some embodiments, the correspondence between the value of the first indication field and the first information combination is predefined or preconfigured, or indicated by the second device. Illustratively, the correspondence between the value of the first indication field and the first information combination is configured by RRC signaling or MAC CE signaling.

[0174] It should be noted that the content indicated by the first indication field and the number of bits of the first indication field can be combined in any manner to obtain a combined embodiment.

[0175] 2、the first information

[0176] Optionally, in addition to the first port number, the first information combination can also include one or more of the following information: first cell information, second cell information, first BWP information, second BWP information, modulation and coding information, Rank information, scheduling and offset information, and stream number information.

[0177] Optionally, the first information is physical layer information, and the first information is one or more of the following information:

[0178] DCI for scheduling downlink data;

[0179] DCI for scheduling uplink data;

[0180] SCI for scheduling sidelink data;

[0181] DCI for non-scheduled data transmission;

[0182] SCI for non-scheduled data transmission.

[0183] Exemplarily, if the second device is a network device, the first information is DCI, and if the second device is a terminal device, the first information is SCI.

[0184] In one example, the first information is physical layer information for a plurality of terminal devices, and the plurality of terminal devices includes the first device. Exemplarily, the first information is DCI for a plurality of terminal devices. Exemplarily, the first information is group common DCI. Alternatively, the first information is not UE-specific DCI or dedicated DCI for the first device. Alternatively, in a 5G system, the first information is not DCI format 1_1.

[0185] In one example, in the case where the first information is physical layer information for a plurality of terminal devices, the first information can be physical layer information DCI for scheduling data or physical layer information DCI for non-scheduled data.

[0186] 3、Taking the first information as an example of first DCI signaling

[0187] Taking the first information as an example of first DCI signaling, the first DCI signaling includes first indication information.

[0188] In addition to the first indication information, the first DCI signaling can indicate one or more of the following information:

[0189] First cell information, the first cell information being used for indicating a cell to which the first information belongs;

[0190] First BWP information, the first BWP information being used for indicating a BWP to which the first information belongs;

[0191] Second cell information, the second cell information being used for indicating one or more first cells, for example, the first information can be applied to one or more first cells;

[0192] Second BWP information, the second BWP information being used for indicating one or more first BWPs, for example, the first information can be applied to one or more first BWPs;

[0193] Modulation and coding information;

[0194] Rank information;

[0195] Scheduling offset information;

[0196] Number of streams information.

[0197] In one example, the first DCI signaling takes effect after the first application time. In one example, in the case that the first port number is greater than the third port number, the first DCI signaling takes effect after the first application time.

[0198] As to the specific content included in the first DCI, and the taking effect time of the first DCI, reference can be made to the introduction of the first information in the above embodiments, which will not be repeated here.

[0199] The technical scheme provided by the embodiments of the present application provides two indication schemes of the first port number, which can be indicated by physical layer information or upper layer information. In the scheme of indicating by physical layer information, the time delay is smaller, and the first device and the second device can synchronize the first port number faster.

[0200] Application of the first port number

[0201] After receiving the first port number, how the first device applies the first port number, or in other words, how the first device determines the number of ports of the first reference signal resource to be measured based on the first port number, the present application also provides exemplary embodiments.

[0202] Exemplarily, the number of ports corresponding to the first reference signal resource is N, N being a positive integer.

[0203] In one example, in case that N is less than or equal to the first port number, the first device performs channel measurement and / or reports reference signal measurement report based on the N ports.

[0204] In one example, in case that N is greater than the first port number, the first device performs channel measurement and / or reports reference signal measurement report based on a first group of ports, the first group of ports containing ports whose number is less than or equal to the first port number. A typical implementation is that the first group of ports contains ports whose number is equal to the first port number. Illustratively, the first device performs channel measurement on ports corresponding to the first reference signal resource, or in other words, the first device receives first reference signals transmitted by ports corresponding to the first reference signal resource.

[0205] Illustratively, the first reference signal resource is a CSI-RS resource, and the CSI-RS resource corresponds to N ports. In case that N is less than or equal to the first port number, the first device performs channel measurement and / or reports CSI on the N ports. In case that N is greater than the first port number, the first device performs channel measurement and / or reports CSI on the first port number of ports in the N ports.

[0206] Optionally, the first group of ports is the first port number of ports in the N ports.

[0207] For the convenience of describing the following examples, the first port number is denoted as M, where M is a positive integer.

[0208] In one example, the first group of ports is the first port number of ports with the smallest index in the ports corresponding to the first reference signal resource.

[0209] In one example, the first group of ports is the first port number of ports with the largest index in the ports corresponding to the first reference signal resource.

[0210] In one example, whether the first group of ports is the first port number of ports with the largest or smallest index in the ports corresponding to the first reference signal resource can be predefined or preconfigured, or can be indicated by the second device. Regardless of whether the first port number of ports with the largest or smallest index is selected, the implementation complexity of the first device is low.

[0211] Optionally, the first group of ports is determined based on a first rule.

[0212] In one example, the first rule can be predefined or preconfigured, or configured by the second device. Illustratively, the RRC signaling or MAC CE signaling of the first rule is indicated. Illustratively, the first rule can be to uniformly sample M ports in the ports corresponding to the first reference signal resource. For example, the first reference signal resource has N=8 ports, if M=2, the first terminal can measure port 0, 4 of the first reference signal resource according to the first rule, or measure port 1, 5, or measure port 2, 6, or measure port 3, 7. Here, only an example of the possible first rule is given, and the specific first rule is not limited by the present application. The first group of ports is determined by the first rule, and the flexibility is better.

[0213] In one example, the first group of ports is indicated by the second device. In some embodiments, the second device indicates the index of the ports included in the first group of ports to the first device. In some embodiments, the first group of ports is indicated by RRC signaling. In some embodiments, the first group of ports can also be indicated by the first indication information. The first group of ports corresponding to the first reference signal resource is indicated by the second device, and the flexibility is higher.

[0214] Optionally, the first group of ports is indicated by RRC signaling. In some embodiments, the RRC signaling indicates the first group of ports in the form of a bit map, where each bit is used to indicate a port.

[0215] Optionally, for the reference resource group / reference resource, the second device can configure a port group corresponding to each value of the first port number. When the first device determines that the first port number is M according to the indication information sent by the second device, then if the reference resource group / reference resource needs to be measured and / or reported, the port group corresponding to M is used. For example, M=1, corresponding to port group 1, M=2, corresponding to port group 2.

[0216] Illustratively, the first port number M=2, N=4, then the second device can configure 2 port groups. Among them, port group 1 contains 1 port, corresponding to the case that the number of ports included in the first group of ports is 1; port group 2 contains 2 ports, corresponding to the case that the number of ports included in the first group of ports is 2. Illustratively, port group 1 includes port x, x is one of 0, 1, 2, 3; port group 2 includes port x and port y, the value of (x, y) can be one of (0, 1), (0, 2), (0, 3), (1, 2), (1, 3), (2, 3).

[0217] In the above embodiments, the first group of ports corresponding to a first reference signal resource is exemplarily described by taking the first group of ports corresponding to one first reference signal resource as an example. When the first device configures the first port number, a plurality of first reference signal resources can be configured, for example, it is indicated that the plurality of first reference signal resources can all adopt the above method of determining the first group of ports to determine the first group of ports corresponding thereto, respectively.

[0218] Exemplarily, the first indication information is for one first reference signal resource, and then the first device determines the first group of ports corresponding to the one first reference signal resource.

[0219] Exemplarily, the first indication information is for one first reference signal resource group, and then any first reference signal resource included in the first reference signal resource group can apply the above method to determine the first group of ports corresponding thereto.

[0220] Exemplarily, the first indication information is for a reference signal resource associated with the first trigger state. For example, the first indication information is applicable to any reference signal resource associated with the first trigger state. In some embodiments, the reference signal resource associated with the first trigger state refers to the reference signal resource involved in the reference signal measurement report triggered by the first trigger state. In some embodiments, the reference signal resource associated with the first trigger state can be determined based on the configuration information corresponding to the first trigger state.

[0221] Exemplarily, the first indication information is for the second BWP, and then any first reference signal resource in the second BWP can apply the above method to determine the first group of ports corresponding thereto.

[0222] Exemplarily, the first indication information is for the second cell, and then any first reference signal resource in the second cell can apply the above method to determine the first group of ports corresponding thereto.

[0223] Exemplarily, the first indication information is for the second cell group, and then any first reference signal resource in any cell in the second cell group can apply the above method to determine the first group of ports corresponding thereto.

[0224] Exemplarily, the first indication information is for the first frequency band, and then any first reference signal resource in the first frequency band can apply the above method to determine the first group of ports corresponding thereto.

[0225] Through the above method, after the first device receives the first port number, the first device can determine which ports to perform channel measurement and / or reference signal measurement reporting, which facilitates the first device to manage the ports, reduces the calculation resources and / or storage resources occupied by the first device to measure the ports of the first reference signal resource, and reduces the power consumption of the first device.

[0226] Application scope of the first port number

[0227] For the application scope of the first port number, the application also gives an exemplary embodiment.

[0228] Optionally, the division of the application scope of the first port number can be carried out from different granularities, for which the application embodiments give the following several exemplary division manners. Of course, other granularities of division manners can also be provided, which are not limited by the application. The application scope of the first port number can also be understood as the applicable range of the first port number, or the applicable range of the first indication information.

[0229] 1. Applied to all serving cells

[0230] In an example, the first port number is applied to all cells of the first device. Exemplarily, the first port number is applied to all cells configured or activated by the first device. In other words, the first port number is applicable to any one of the first reference signal resources on all cells configured or activated by the first device. That is, the first reference signal resource group includes the reference signal resources on all cells configured or activated by the first device.

[0231] In an example, the first port number is applied to the indicated BWP in all cells configured or activated by the first device. Optionally, the indicated BWP is indicated by the second device. Exemplarily, the indicated BWP is the second BWP information mentioned in the above embodiments.

[0232] In an example, the first port number is applied to all BWPs in all cells configured or activated by the first device. Optionally, in the case where the second BWP information is not indicated by the second device, the first port number is applicable to all BWPs in all cells configured or activated by the first device.

[0233] In an example, in this case, the second port number is determined according to the port number corresponding to the reference signal resource with the most corresponding ports among all reference signal resources on all cells configured or activated by the first device. Exemplarily, the second port number is greater than or equal to the second number. The second number is the port number corresponding to the reference signal resource with the most corresponding ports among all reference signal resources on all cells configured or activated by the first device.

[0234] 2. Only applied to the indicated cell

[0235] In an example, the first port number is only applied to the first cell indicated by the second device. Exemplarily, the first cell is indicated by the second cell information mentioned in the above embodiments.

[0236] In an example, the first number of ports is applied to one or more first cells. In some embodiments, the second cell information can indicate a list including one or more first cells. In some embodiments, the second cell information includes one or more indication fields, wherein each indication field indicates a first cell. In some embodiments, the second cell information includes one or more bits, wherein each bit indicates a first cell.

[0237] In an example, the first number of ports is applied to an indicated BWP in the one or more first cells. Optionally, the indicated BWP is indicated by the second device. Illustratively, the indicated BWP is the second BWP information mentioned in the above embodiments.

[0238] In an example, the first number of ports is applied to all BWPs in the one or more first cells. Optionally, the first number of ports is applied to all BWPs in the one or more first cells in the case that the second device does not indicate the second BWP information.

[0239] In an example, the one or more first cells can also be determined based on the first cell information.

[0240] In an example, the one or more first cells are indicated by the first information. Illustratively, the one or more first cells are indicated by the second cell information in the first information.

[0241] In an example, the one or more first cells are cells corresponding to data transmission scheduled by the first information. Illustratively, the first information is a physical layer information, such as the first information is a first DCI, and the one or more first cells are cells corresponding to data transmission scheduled by the first DCI.

[0242] In an example, the one or more first cells are cells where the first information is transmitted. Illustratively, the one or more first cells are indicated by the first cell information in the first information.

[0243] In this case, the first reference signal resource group includes all reference signal resources on the one or more first cells.

[0244] In an example, in this case, the second number of ports is determined according to a maximum number of ports corresponding to reference signal resources with the most corresponding ports among all reference signal resources on all cells configured or activated by the first device. Illustratively, the second number of ports is greater than or equal to a second number. The second number is a maximum number of ports corresponding to reference signal resources among all reference signal resources on all cells configured or activated by the first device.

[0245] In one example, the second port number is determined according to a port number corresponding to a reference signal resource with the most ports among all reference signal resources on the one or more first cells, and the first information is applied to the one or more first cells. Illustratively, the second port number is greater than or equal to a second number. The second number is a port number corresponding to a reference signal resource with the most ports among all reference signal resources on the one or more first cells.

[0246] In one example, in a case where the first port number is applied to an indicated BWP in the one or more first cells, the second port number can be determined based on a port number corresponding to a reference signal resource with the most ports among all reference signal resources on the indicated BWP in the one or more first cells.

[0247] 3. Only applied to a cell to which the first information belongs

[0248] In one example, the first port number is applied to a third cell, and the first indication information corresponds to the third cell.

[0249] In one example, the first indication information corresponds to the third cell, which can be understood as that the first indication information belongs to the third cell, or that the first indication information is transmitted on resources in the third cell. In some embodiments, the third cell is indicated by the first cell information mentioned in the above embodiments.

[0250] In one example, the third cell is indicated by the first information. Illustratively, the third cell is indicated by the first cell information mentioned in the above embodiments.

[0251] In one example, the third cell is a cell corresponding to data transmission scheduled by the first information. Optionally, if the first information is used to schedule data transmission, the third cell can be a cell corresponding to data transmission scheduled by the first information. Optionally, if the first information is used for cross-carrier scheduling, or data transmission scheduled by the first information is on cell X, the third cell is cell X.

[0252] In one example, the third cell is a cell where the first information is transmitted. Optionally, regardless of which cell data transmission scheduled by the first information is on, the third cell is a cell where the first information is transmitted.

[0253] In one example, the first port number is applied to an active BWP in the third cell. Optionally, the first device can configure up to 4 BWPs in uplink or downlink, and only one BWP can be activated at the same time. The active BWP means that the working bandwidth of the first device is within the working bandwidth of the cell. The first device only transmits and receives data on the active BWP. Optionally, if the first device is configured with SUL, it can configure up to 4 additional BWPs to assist uplink, and only one BWP can be activated at the same time.

[0254] In one example, the first port number is applied to all BWPs in the third cell.

[0255] In this case, the first reference signal resource group includes all reference signal resources on the third cell.

[0256] In one example, in this case, the second port number is determined according to the port number corresponding to the reference signal resource with the most ports among all reference signal resources on all cells configured or activated by the first device. For example, the second port number is greater than or equal to the second number. The second number is the port number corresponding to the reference signal resource with the most ports among all reference signal resources on all cells configured or activated by the first device.

[0257] In one example, the second port number is determined according to the port number corresponding to the reference signal resource with the most ports among all reference signal resources on the third cell, and the first indication information corresponds to the third cell. For example, the second port number is greater than or equal to the second number. The second number is the port number corresponding to the reference signal resource with the most ports among all reference signal resources on the third cell.

[0258] In one example, the second port number is determined according to the port number corresponding to the reference signal resource with the most ports among all reference signal resources on the active BWP of the third cell, and the first indication information corresponds to the third cell. For example, the second port number is greater than or equal to the second number. The second number is the port number corresponding to the reference signal resource with the most ports among all reference signal resources on the active BWP of the third cell.

[0259] 4. Applied to the cell group in which the cell to which the first information belongs

[0260] In one example, the first port number is applied to the first cell group, wherein the first cell group includes the third cell.

[0261] In one example, the first number of ports is applied to all cells in the first cell group. Optionally, the first cell group is indicated by the second device. Optionally, the first cell group is indicated by RRC signaling or MAC CE signaling. In some embodiments, the first cell group can also be indicated by the first cell information or the second cell information in the first information.

[0262] In one example, the first number of ports is applied to an indicated BWP in all cells in the first cell group. Optionally, the indicated BWP is indicated by the second device. Optionally, the indicated BWP is indicated by RRC signaling or MAC CE signaling. In some embodiments, the indicated BWP can also be indicated by the first BWP information or the second BWP information in the first information.

[0263] In one example, the first number of ports is applied to all BWPs in all cells in the first cell group.

[0264] In one example, the first cell group contains all cells on a frequency band where the third cell is located, and the first indication information corresponds to the third cell.

[0265] Optionally, the method further comprises the following step 220.

[0266] Step 220, the first device receives the second indication information sent by the second device; wherein the second indication information is used to indicate one or more cell groups, and the one or more cell groups contain the first cell group, or the second indication information is used to indicate one or more second frequency bands, and the first cell group contains all cells on the one or more second frequency bands; wherein the third cell belongs to the first cell group.

[0267] Correspondingly, the second device sends the second indication information.

[0268] Optionally, the first cell group contains the third cell, and the determination manner of the third cell can refer to the above description of the third cell only applied to the cell to which the first information belongs, which will not be described herein again.

[0269] In this case, the first reference signal resource group includes all reference signal resources on all cells in the first cell group.

[0270] In one example, in this case, the second number of ports is determined according to the port number corresponding to the reference signal resource with the most corresponding ports among all reference signal resources on all cells configured or activated by the first device. Exemplarily, the second number of ports is greater than or equal to the second number. The second number is the port number corresponding to the reference signal resource with the most corresponding ports among all reference signal resources on all cells configured or activated by the first device.

[0271] In one example, the second port number is determined according to a port number corresponding to a reference signal resource with the most ports among all reference signal resources on all cells in the first cell group. Exemplarily, the second port number is greater than or equal to the second number. The second number is a port number corresponding to a reference signal resource with the most ports among all reference signal resources on all cells in the first cell group.

[0272] It should be noted that the application range of any one of the first port numbers provided in the above embodiments can be combined with other embodiments in the present application to obtain new embodiments.

[0273] Through the above method, the first device can determine the application range of the first port number, and apply the first port number to the reference signal resources in the first reference signal resource set only, so as to avoid the inconsistency of the understanding of the second device and the first device on the port number of the reference signal resource.

[0274] Reporting of the capability of the first device

[0275] In the above embodiments, it is mentioned that the first device can report the capability of the first device to the second device. As to how the first device reports its own capability, the present application also provides exemplary embodiments.

[0276] 1. The first device reports the capability for determining the first application time

[0277] Optionally, the capability of the first device is used by the second device to determine the first application time.

[0278] Optionally, the method further includes the following step 230.

[0279] Step 230: The first device sends first capability information to the second device, and the first capability information includes one or more of the following:

[0280] The first capability is used to indicate that the first device supports the upper layer information carrying the first indication information;

[0281] The second capability is used to indicate that the first device supports the physical layer information carrying the first indication information;

[0282] The third capability is used to determine the first application time of the first indication information carried by the upper layer information;

[0283] The fourth capability is used to determine the first application time of the first indication information carried by the physical layer information.

[0284] Correspondingly, the second device receives the first capability information.

[0285] In one example, the first application time of the first indication information of the upper layer information bearer can be the same as or different from the first application time of the first indication information of the physical layer information bearer. Since the latency of the upper layer information is different from the latency of the physical layer information, the determination of the first application time can also be different, and thus the two can be different.

[0286] Exemplarily, the first application time includes a first time length and a first time point, where the first time length refers to the time length of the first application time, and the first time point refers to the time point at which the first application time starts timing. Exemplarily, the first time point refers to the time point at which the first information is received, or the first time point is a predefined or preconfigured time point.

[0287] Optionally, the first capability information is terminal capability information; or the first capability information is upper layer signaling. In one example, the first capability information is terminal capability information, for example, UE capability. The terminal capability information can be directly stored in the core network device, without the need for the terminal device to repeatedly report on different cells. In one example, the first capability information is upper layer signaling, for example, UE recommendation. The upper layer signaling is signaling sent by the upper layer of the physical layer. Exemplarily, the upper layer signaling is RRC signaling or MAC CE signaling.

[0288] Optionally, the first capability information can be reported for different granularities.

[0289] In one example, the first capability information is independently reported for each frequency band. That is, different frequency bands can report different capabilities (per band). Taking the first capability as an example, frequency band 1 can support the first capability, and frequency band 2 does not support the first capability, thereby realizing greater freedom for the first device.

[0290] In one example, the first capability information is independently reported for each frequency band combination (per band combination). That is, different frequency band combinations can report different capabilities. Taking the first capability as an example, a frequency band combination supporting the first capability means that the frequency bands included in the frequency band combination all support the first capability, and a frequency band combination not supporting the first capability means that the frequency bands included in the frequency band combination all do not support the first capability, thereby realizing greater freedom for the first device.

[0291] In one example, the first capability information is reported per band per band combination. That is, different bands in one band combination can report different capabilities. Optionally, the same band in different band combinations can report different capabilities. Illustratively, band combination 1 includes bands A and B, where band A supports the first capability and band B does not support the first capability. Band combination 2 includes bands B and C, where both bands B and C support the first capability. The first device has higher implementation freedom.

[0292] In one example, the first capability information is reported per CC per band per band combination (or FSPC). Each carrier on each band in one band combination can be independently reported, so that the first device has higher implementation freedom.

[0293] In one example, the first capability information is reported per FR. That is, different FRs can be independently reported. Illustratively, FR1 and FR2 are independently reported. So that the first device has higher implementation freedom.

[0294] In one example, the first capability information is reported per UE. This can reduce the overhead of the first device sending the first capability information.

[0295] 2. The first device reports the recommended first port number

[0296] In addition to the above capabilities, the first device can also recommend the value of the first port number to the second device through the first reporting information. For example, the first reporting information can be UE Assistance Information (UAI).

[0297] Optionally, the method further includes the following step 240.

[0298] Step 240, the first device sends the first reporting information to the second device, the first reporting information being used to indicate the fourth port number, the fourth port number being the value of the first port number recommended by the first device.

[0299] Correspondingly, the second device receives the first reporting information.

[0300] The size relationship between the first port number and the fourth port number is not limited in the present application. Illustratively, the first port number can be greater than or equal to the fourth port number, or less than the fourth port number.

[0301] In one example, the first reporting information is used to indicate the first port number suggested by the first device for all reference signal resources on all cells configured or activated for the first device. This scheme is the simplest in implementation and reduces the implementation complexity of the first device.

[0302] In one example, the first reporting information is used to indicate the first port number suggested by the first device for all reference signal resources on the activated BWP on all cells configured or activated for the first device.

[0303] In one example, the first reporting information is used to indicate the first port number suggested by the first device for all reference signal resources on one or more fourth cells. Optionally, the first reporting information is also used to indicate the one or more fourth cells. Optionally, the first reporting information is used to indicate the one or more fourth cells and the fourth port number corresponding to each fourth cell respectively. Optionally, the fourth port numbers corresponding to the multiple fourth cells indicated in the first reporting information can be the same or different. This scheme is more flexible.

[0304] In one example, the first reporting information is used to indicate the first port number suggested by the first device for all reference signal resources on one or more third frequency bands. Optionally, the first reporting information is also used to indicate the one or more third frequency bands. Optionally, the first reporting information is used to indicate the one or more third frequency bands and the fourth port threshold corresponding to each third frequency band respectively. Optionally, the fourth port thresholds corresponding to the multiple third frequency bands indicated in the first reporting information can be the same or different. This scheme is more flexible and has lower implementation complexity.

[0305] It should be noted that the embodiments of the capability reporting of the first device provided in the above embodiments can be combined with other embodiments in the present application to obtain new embodiments.

[0306] Through the above method, the first device can report the capability and / or the suggested first port number of the first device to the second device to assist the second device in determining the first port number, the first application time, the first information, etc.

[0307] Next, taking the first device as the first terminal device, the second device as the first network device, the reference signal as the CSI-RS, and the reference signal resource as the CSI-RS resource as examples, the technical scheme of the embodiments of the present application will be exemplarily described.

[0308] The first terminal device (denoted as the first UE) receives the first indication information sent by the first network device, and the first indication information indicates the first port number (denoted as N1_port).

[0309] The advantage is that the network device and the UE can turn off part of the channel, thereby saving energy consumption. For example, the network device considers that it does not need so many ports of the CSI-RS to perform channel measurement according to the current traffic demand, and then can turn off part of the transmission channel. For the UE, if the number of ports of the CSI-RS to be measured in the future period of time does not exceed N1_port, part of the receiving channel and / or storage resource and / or computing resource can also be directly turned off, thereby reducing the power consumption of the UE and achieving the purpose of energy saving.

[0310] Optionally, the first port number is less than or equal to the second port number (denoted as N2_port), and the second port number is the maximum port number in a group of CSI-RS resources (denoted as the S1 CSI-RS group), wherein the first UE receives the second indication information sent by the first network device, and the S1 CSI-RS group is determined according to the second indication information. As an example, the second indication information can be configured by RRC signaling. The advantage is to increase the limitation of the first indication information and reduce the product implementation complexity.

[0311] Optionally, the first port number can be any positive integer less than or equal to the second port number. The advantage is that the signaling flexibility is better, and additional space is provided for network optimization.

[0312] Optionally, the value of the first port number satisfies the following two conditions:

[0313] The value of the first port number is less than or equal to the second port number.

[0314] The value of the first port number is the configurable port number in the RRC information configuration of a CSI-RS.

[0315] For example, in a system, when an RRC configures a CSI-RS resource, the port number of the CSI-RS resource can take a value from a set Group1, and the value of the first port number can also be only one from Group1.

[0316] Exemplarily, originally the service transmission data requirement is high, the network configures the CSI-RS resource ports on a certain carrier (or a certain BWP of the carrier) to be 32 (corresponding to the second port number N2_port) through RRC signaling. After a period of time, the service changes, the data transmission requirement is very low, at this time the network can close part of the transmission channels, reduce the DL MIMO transmission stream number, and the network informs the UE that the CSI-RS resource ports that need to be measured are 4 (corresponding to the first port number N1_port). At this time, the UE can also close part of the receiving channels and / or computing resources and / or storage resources for energy saving. After another period of time, the service requires high data transmission, more stream number MIMO transmission, the network can reopen part of the originally closed transmission channels. At this time, the network can inform the UE that the CSI-RS resource ports that need to be measured are 8 or 32 (corresponding to the first port number N1_port), and the UE can reopen part of the originally closed receiving channels and / or computing resources and / or storage resources according to the received information.

[0317] I. MAC CE signaling scheme

[0318] Optionally, the first indication information is transmitted through MAC CE signaling (denoted as a first MAC CE).

[0319] Optionally, in addition to the information indicating the first port number, the first MAC CE can also include one or more of the following information:

[0320] • Cell-related information 1 (such as cell identification), used to indicate a first cell C1, the MAC CE corresponds to the first cell C1, that is, the MAC CE belongs to the first cell C1.

[0321] • BWP-related information 1 (such as BWP identification), used to indicate a first BWP W1, the MAC CE corresponds to the first BWP W1, that is, the MAC CE belongs to the first BWP W1.

[0322] • Cell-related information 2 (such as cell identification), used for 1 or more first cells. For example, the information indicated by the MAC CE can be applied to the 1 or more first cells.

[0323] For example, the cell-related information 2 can indicate a list, and the list indicates 1 or more cells.

[0324] For another example, the cell-related information 2 includes multiple fields or multiple bits, and different fields or bits indicate different cells.

[0325] • BWP related information 2 (e.g. BWP identity) for 1 or more first BWPs. For example, the information indicated by this MAC CE can be applied to the 1 or more first BWPs.

[0326] Optionally, the first MAC CE can also contain 1 or some or all of the following indication information:

[0327] • dl_info1: Downlink transmission MCS related information.

[0328] o For example, for downlink transmission, indicate which MCS table, and / or which modulations can be used, and / or which modulations cannot be used, etc.

[0329] • dl_info2: CSI feedback rank restriction.

[0330] o For example, the maximum rank number of CSI feedback. The rank of CSI feedback refers to the maximum number of streams supported for transmission reported by a user equipment (UE) to a base station (or access point) in a multiple-input multiple-output (MIMO) system.

[0331] • dl_info3: Downlink scheduling offset related restriction, where scheduling offset refers to the time interval between scheduling information and the scheduled transmission.

[0332] o For example, the interval between PDCCH and PDSCH cannot be less than a certain value, or cannot be less than or equal to a certain value.

[0333] • dl_info4: Downlink MIMO transmission maximum stream number related information.

[0334] o For example, tell the UE that the maximum stream number of the recently scheduled MIMO transmission will not exceed a certain value. Where the certain value is less than the original RRC value (reduce the maximum stream number of MIMO transmission), or equal to the original RRC configured value (for example, due to changes in traffic, the data transmission requirement is improved, then the network can inform the UE that the maximum stream number of subsequent MIMO transmission is restored to the original maximum stream number).

[0335] In particular, the information indicated by the first MAC CE can be one of the following combinations of some information (the following examples only discuss combinations involving the above three information):

[0336] • Indication information of the first number of ports (denoted as dl_Comb0)

[0337] • Indication information of the first number of ports + dl_info1 (denoted as dl_Comb1)

[0338] • indication information of the first port number + dl_info2 (denoted as dl_Comb2)

[0339] • indication information of the first port number + dl_info3 (denoted as dl_Comb3)

[0340] • indication information of the first port number + dl_info1 + dl_info 2 (denoted as dl_Comb4)

[0341] • indication information of the first port number + dl_info1 + dl_info 3 (denoted as dl_Comb5)

[0342] • indication information of the first port number + dl_info2 + dl_info3 (denoted as dl_Comb6)

[0343] • indication information of the first port number + dl_info1 + dl_info2 + dl_info3 (denoted as dl_Comb7)

[0344] • indication information of the first port number + dl_info4 (denoted as dl_Comb8)

[0345] • indication information of the first port number + dl_info1 + dl_info4 (denoted as dl_Comb9)

[0346] • indication information of the first port number + dl_info2 + dl_info4 (denoted as dl_Comb10)

[0347] • indication information of the first port number + dl_info3 + dl_info4 (denoted as dl_Comb11)

[0348] • indication information of the first port number + dl_info1 + dl_info 2 + dl_info4 (denoted as dl_Comb12)

[0349] • indication information of the first port number + dl_info1 + dl_info 3 + dl_info4 (denoted as dl_Comb13)

[0350] • indication information of the first port number + dl_info2 + dl_info3 + dl_info4 (denoted as dl_Comb14)

[0351] • indication information of the first port number + dl_info1 + dl_info2 + dl_info3 + dl_info4 (denoted as dl_Comb15)

[0352] II. DCI scheme

[0353] Optionally, the first indication information is transmitted through DCI signaling (denoted as first DCI). The benefit is that compared with MAC CE signaling, the latency is smaller, so that the network device and the UE can match the dynamic changes of the service faster.

[0354] Optionally, the first domain (first indication domain) in the first DCI indicates the first port number N1_port.

[0355] Optionally, the first domain can be a special field in the first DCI, which is only used to indicate the first port number N1_port. The benefit is that the special field is simple in signaling and low in product implementation complexity.

[0356] At this time, for the size of the first domain (i.e., how many bits the first domain has), there can be different options:

[0357] • Opt.1: The size of the first domain is determined according to the second port number N2_port.

[0358] • Opt.2: The size of the first domain is determined according to the RRC configuration information of the network device.

[0359] o For example, the correspondence between the value of the first domain and the corresponding N1_port value is determined according to a predetermined rule (e.g., pre-defined by the protocol).

[0360] o For another example, the correspondence between the value of the first domain and the corresponding N1_port value is determined by network configuration.

[0361] In this case:

[0362] • In some embodiments, the first DCI is a DL DCI (i.e., a DCI that schedules downlink data).

[0363] • In some embodiments, the first DCI can be a UL DCI (i.e., a DCI that schedules uplink data).

[0364] • In some embodiments, the first DCI can be one of a UL DCI and a DL DCI, i.e., the network can transmit the first indication information through the UL DCI and / or the DL DCI.

[0365] • In some embodiments, the first DCI can be a DCI for non-scheduled data transmission. That is, the first DCI is not used to schedule data transmission.

[0366] • In some embodiments, the first DCI can be a DCI targeting multiple UEs (e.g., group common DCI), not a UE-specific DCI, not a dedicated DCI (i.e., not a DCI targeting only the first terminal device, e.g., for 5G system, not DCI format 1_1).

[0367] o Optionally, the first DCI can be a DCI not scheduling data transmission, i.e., the first DCI is not used to schedule data transmission.

[0368] Optionally, the first field in the first DCI can indicate not only the first port number N1_port, but also other information (through different values, or in other words, through different codepoints). For example, when the first field takes a first value, it is used to indicate the first port number N1_port. When the first field takes a second value, it is used to indicate other information. In some embodiments, the 1 or more first values can be specified by protocol and / or configured by network, and the 1 or more second values can be specified by protocol and / or configured by network. For example, the first field can be a field indicating DL MIMO layer when the first DCI schedules data, and for another example, the first field can be a field (or in other words, a CSI request field) triggering CSI feedback from the first terminal device.

[0369] Optionally, the information indicated by the first field can not only indicate the first port number N1_port, but also one or more of dl_info1, dl_info2, dl_info3, and dl_info4. That is, the information indicated by the first DCI can be one of the following combinations (dl_Comb0, dl_Comb1, dl_Comb2, dl_Comb3, dl_Comb4, dl_Comb5, dl_Comb6, dl_Comb7, dl_Comb8, dl_Comb9, dl_Comb10, dl_Comb11, dl_Comb12, dl_Comb13, dl_Comb14, dl_Comb15). These definitions are described in the “MAC CE signaling scheme” below

[0370] For example, the network device configures 1 or more combinations, where each combination contains a first port number value, one or more of dl_info1, dl_info2, dl_info3, and dl_info4. Different values (codepoints) of the first field correspond to different combinations, and the correspondence can be specified by protocol or determined according to network configuration.

[0371] Optionally, the first indication information can further indicate one or more of the following information:

[0372] • Information of one or more cells.

[0373] • Information of one or more BWPs.

[0374] Optionally, the first indication information takes effect after the first application time. The benefit is to give UE enough time to turn on the receiving channel, so as to improve the transmission rate, and also to make the UE and the network device consistent in understanding the status of both sides, so as to avoid the mismatch of scheduling.

[0375] There can be different methods for the use of the first application time (or whether the first indication information is applicable):

[0376] Optionally, the first application time can be applicable to each first indication information. This method can simplify the protocol description and reduce the complexity of UE implementation.

[0377] Optionally, the first application time is only applied when the capability indicated by the first indication information exceeds the current capability. Taking dl_Comb0 as an example:

[0378] • When the N1_port indicated by the first indication information is greater than the value used originally (for example, the value of N1_port indicated by the previous first indication information), the first application time is applicable to the first indication information. When the N1_port indicated by the first indication information is less than the value used originally (for example, the value of N1_port indicated by the previous first indication information), the first application time is not applicable to the first indication information (or the first application time does not need to be considered).

[0379] • When the N1_port indicated by the first indication information is greater than the value used originally (for example, the value of N1_port indicated by the previous first indication information), the first application time is applicable to the first indication information. When the N1_port indicated by the first indication information is less than the value used originally (for example, the value of L_dl_max_1 indicated by the previous first indication information), the first application time is not applicable to the first indication information (or the first application time does not need to be considered).

[0380] Optionally, the first application time is determined according to the terminal capability, wherein the first UE reports the terminal capability (first reporting information) to the network. The benefit is that different UEs can have different capabilities, thereby reducing the difficulty of UE implementation and enabling more UEs to support this function.

[0381] Optionally, the first application time is predetermined by the protocol. The benefit is low flexibility, but the product implementation is simple.

[0382] Optionally, the first application time is determined according to the network configuration information. The advantage is that the network device can use unified configuration, thereby reducing the network implementation complexity.

[0383] Regarding the use of the first port number

[0384] Optionally, when the indication or trigger information of the first network device is received, the first terminal device performs channel measurement and / or CSI reporting based on one or more first CSI-RS resources (for convenience, the one or more first CSI-RS resources are referred to as an S2 CSI-RS group).

[0385] Taking any one CSI-RS resource (referred to as a second CSI-RS resource) in the S2 CSI-RS group as an example, it is assumed that the RRC configuration signaling of the second CSI-RS resource configures that the second CSI-RS resource has N3_port ports.

[0386] If the port number N3_port of the second CSI-RS resource <= the first port number N1_port, when the first terminal device performs channel measurement and / or CSI reporting, all N3_port ports of the second CSI-RS resource are used.

[0387] If the port number N3_port of the second CSI-RS resource > the first port number N1_port, when the first terminal device performs channel measurement and / or CSI reporting, N1_port ports of the second CSI-RS resource (that is, N1_port ports in N3_port ports) are used. The advantage is that the network device can close part of the RF channel, and the UE can close part of the receiving RF channel and / or computing resources and / or storage resources.

[0388] Wherein the N1_port ports of the second CSI-RS resource specifically correspond to which ports in the N3_port ports, there can be different options:

[0389] • Option PortMapping-1: determined according to a predetermined rule. The advantage is that the protocol is simple, and the product implementation complexity is low.

[0390] o Option 1-1: The N1_port ports correspond to the N1_port smallest port numbers in the N3_port ports. An example is that the N1_port ports respectively correspond to port 0, port 1, …, and port N1_port-1 in the N3_port ports.

[0391] Option 1-2: the N1_port ports correspond to the N1_port largest N3_port port numbers. For example, the N1_port ports correspond to the port N3_port-N1_port, port N3_port-N1_port+1, …, port N3_port-1 in the N3_port ports respectively.

[0392] Option PortMapping-2: the network device indicates one of the multiple corresponding relationships through RRC signaling (i.e., RRC configuration information). For example, there can be multiple different predetermined rules, and the network device indicates one of the predetermined rules through RRC signaling. The advantage is better flexibility.

[0393] Option PortMapping-3: the network indicates the corresponding ports when different N1_port values are taken through RRC signaling (i.e., RRC configuration information). The advantage is better flexibility.

[0394] In some embodiments, the port corresponding to each N1_port value can be indicated in a bitmap manner.

[0395] Taking N3_port=4 as an example, assume that the N1_port value can be 1 or 2. The network can configure two port groups, wherein the first port group contains 1 port (for example, port x, x is one of 0, 1, 2, or 3) corresponding to the case of N1_port=1, and the second port group contains 2 ports (for example, port x and port y, the value of (x, y) can be one of (0, 1), (0, 2), (0, 3), (1, 2), (1, 3), (2, 3)) corresponding to the case of N1_port=2.

[0396] For the case of taking other values of N3_port and / or N1_port, it can also be similarly generalized.

[0397] The first terminal device determines the corresponding port according to the N1_port value indicated by the first indication information. For example, in the above example, the first terminal device receives the first indication information, and the N1_port value of the first indication information is 2, so it can be known that the corresponding ports are port x and port y in the second CSI-RS resource.

[0398] For this RRC configuration information, there can be different options (corresponding to different granularity):

[0399] Option RRC-1: The RRC configuration information is configured per CSI-RS resource. For example, each CSI-RS resource can have its own corresponding configuration.

[0400] Option RRC-2: The RRC configuration information is configured per CSI-RS resource set, where this configuration information is applicable to all CSI-RS resources in this set. For example, each CSI-RS resource set can have its own corresponding configuration.

[0401] Option RRC-3: The RRC configuration information is configured per triggering state, where this configuration information is applicable to all CSI-RS resources associated with this triggering state (here, the association can be the CSI-RS resources involved in the CSI reporting triggered by this triggering state). For example, each triggering state can have its own corresponding configuration.

[0402] Option RRC-4: The RRC configuration information is configured per BWP, where this configuration information is applicable to all CSI-RS resources within this BWP. For example, each BWP can have its own corresponding configuration.

[0403] Option RRC-5: The RRC configuration information is configured per cell, where this configuration information is applicable to all CSI-RS resources within this cell. For example, each cell can have its own corresponding configuration.

[0404] Option RRC-6: The RRC configuration information is configured per cell group, where this configuration information is applicable to all CSI-RS resources in all cells within this cell group. For example, each cell group can have its own corresponding configuration.

[0405] Option RRC-7: The RRC configuration information is configured per frequency band, where this configuration information is applicable to all CSI-RS resources in all cells within this frequency band. For example, each frequency band can have its own corresponding configuration.

[0406] Applicable range of the first indication information

[0407] Optionally, the following options can be combined with any of the previous options PortMapping-1, PortMapping-2, PortMapping-3 (including the combination with their sub-options, e.g. RRC-1, RRC-2, RRC-3, RRC-4, RRC-5, RRC-6, RRC-7).

[0408] Opt. 1 : applied to all serving cell

[0409] Optionally, the first indication information is applicable to all cells of the first terminal device (e.g. all cells configured by the first terminal device, or all cells activated by the first terminal device), i.e. the first number of ports indicated by the first indication information is applicable to all CSI-RS resources on all cells. In this case, the first CSI-RS group S1 includes all CSI-RS resources on all cells.

[0410] Optionally, the first indication information is applicable to an indicated BWP of all cells of the first terminal device, the indicated BWP being indicated by the first indication information.

[0411] Optionally, the first indication information is applicable to all BWPs of all cells of the first terminal device.

[0412] Optionally, the second number of ports N2 port is determined according to the number of ports of the CSI-RS resource with the most ports among all CSI-RS resources on all cells of the first terminal device. For example, the second number of ports N2 port is the maximum value among the number of ports of all CSI-RS resources on all cells of the first terminal device.

[0413] Opt. 2: only applied to the indicated cell(s)

[0414] Optionally, the first indication information is applicable to a first cell of the first terminal device, i.e. the first number of ports N1 port indicated by the first indication information is applicable to all CSI-RS resources on the first cell. In this case, the first CSI-RS group S1 includes all CSI-RS resources on the first cell.

[0415] • Optionally, there can be 1 or more first cells. For example, the first indication information can indicate a list, which indicates 1 or more cells. For another example, the first indication information indicates 1 or more cells (different cells are indicated by different fields in the first indication information, or different cells are indicated by different bits in the first indication information).

[0416] • If the first indication information is transmitted by a first MAC CE, the first cells are indicated by the first MAC CE. For example, there can be cell related information 2 in the first MAC CE to indicate 1 or more first cells.

[0417] • If the first indication information is transmitted by a first DCI, the first cells can have different options:

[0418] • Option one: the first cells are the cells corresponding to the data transmission scheduled by the first DCI.

[0419] • Option two: the first cells are the cells where the first DCI is transmitted, i.e., the first DCI is transmitted on the first cells.

[0420] • Option three: the first cells are indicated by the first DCI. In this option, the first DCI indicates not only the first port number N1_port, but also the corresponding cells. For example, the network can configure 1 or more combinations, where each combination contains at least the first port number N1_port and the corresponding cell information. In some embodiments, each combination can also contain other information.

[0421] • Optionally, the first indication information is applicable to the indicated BWP in the first cells, which is indicated by the first indication information.

[0422] • Optionally, the first indication information is applicable to all BWP in the first cells.

[0423] • Optionally, the second port number N2_port is determined according to the port number of the CSI-RS resource with the most ports among all CSI-RS resources on all cells of the first terminal. Wherein, all cells of the first terminal device can be all cells configured for the first terminal device, or all cells activated by the first terminal device. For example, the second port number N2_port is the maximum value among the port numbers of all CSI-RS resources on all cells of the first terminal.

[0424] • Optionally, the second port number N2_port is determined according to the port number of the CSI-RS resource with the most ports among all CSI-RS resources on all first cells. For example, the second port number N2_port is the maximum value among the port numbers of all CSI-RS resources on all first cells.

[0425] Opt.3: only applied to the cell that the MAC / DCI belong to

[0426] Optionally, the first indication information is applicable to the first C1 cell, i.e., the first port number N1_port indicated by the first indication information is applicable to all CSI-RS resources on the first C1 cell, where the first indication information corresponds to (or belongs to) the first C1 cell. In this case, the first S1 CSI-RS group includes all CSI-RS resources on the first C1 cell.

[0427] • If the first indication information is transmitted through the first MAC CE, the first C1 cell is indicated by the first MAC CE signaling, e.g., through the cell-related information 1 in the first MAC CE signaling.

[0428] • If the first indication information is transmitted through the first DCI, the first C1 cell can have different options:

[0429] Option one: the first C1 cell is the cell corresponding to the data transmission scheduled by the first DCI. For example, if the first DCI performs cross-carrier scheduling, the scheduled data is on cell (or carrier) Cell X, then the first C1 cell is Cell X.

[0430] Option two: the first C1 cell is the cell where the first DCI is transmitted, i.e., the first DCI is transmitted on the first C1 cell.

[0431] • Optionally, the first indication information is applicable to the active BWP (note that it is different from the other options) of the first C1 cell.

[0432] • Optionally, the first indication information is applicable to all BWPs in the first C1 cell.

[0433] • Optionally, the second port number N2_port is determined according to the port number of the CSI-RS resource with the most ports among all CSI-RS resources on all cells of the first terminal. For example, the second port number N2_port is the maximum value among the port numbers of all CSI-RS resources on all cells of the first terminal.

[0434] • Optionally, the second port number N2_port is determined according to the port number of the CSI-RS resource with the most ports among all CSI-RS resources on the C1th cell. For example, the second port number N2_port is the maximum value among the port numbers of all CSI-RS resources on the C1th cell.

[0435] Opt.4: applied to a list of cells including Cell X,whether the MAC / DCI belong to X

[0436] Optionally, the first indication information is applicable to all cells in the first cell group, i.e., the first port number N1_port indicated by the first indication information is applicable to all CSI-RS resources on all cells in the first cell group. The first indication information corresponds to the C1th cell (or the first indication information belongs to the C1th cell). At this time, the S1th CSI-RS group includes all CSI-RS resources on all cells in the first cell group.

[0437] • Optionally, the first terminal device receives third indication information sent by the first network device, and the third indication information indicates a plurality of cell groups, wherein the first cell group is included, and the C1th cell belongs to the first cell group. The third indication information is transmitted through RRC signaling or MAC signaling.

[0438] • Optionally, the first terminal device receives third indication information sent by the first network device, and the third indication information indicates 1 or more frequency bands, and the first cell group includes all cells on the 1 or more frequency bands. The third indication information is transmitted through RRC signaling or MAC signaling.

[0439] o Optionally, the C1th cell belongs to the first cell group.

[0440] • Optionally, the first cell group includes all cells in one frequency band, and the C1th cell is on this frequency band.

[0441] • If the first indication information is transmitted by the first MAC CE, the C1 cell is indicated by the first MAC CE signaling, e.g. indicated by the cell related information 1 in the first MAC CE signaling.

[0442] • If the first indication information is transmitted by the first DCI, the C1 cell can have different options:

[0443] • Option one: the C1 cell is the cell corresponding to the data transmission scheduled by the first DCI. For example, if the first DCI is cross-carrier scheduling, the data is scheduled on the cell (or carrier) Cell X, then the C1 cell is Cell X.

[0444] • Option two: the C1 cell is the cell where the first DCI is transmitted, i.e. the first DCI is transmitted on the C1 cell.

[0445] • Optionally, the first indication information is applicable to all CSI-RS resources on the indicated BWP in all cells in the first cell group, the indicated BWP is indicated by the first indication information.

[0446] • Optionally, the first indication information is applicable to all CSI-RS resources on all BWPs in all cells in the first cell group.

[0447] • Optionally, the second port number N2_port is determined according to the port number of the CSI-RS resource with the most ports among all CSI-RS resources on all cells of the first terminal. Wherein, all cells of the first terminal device can be all cells configured for the first terminal device, or all cells activated by the first terminal device. For example, the second port number N2_port is the maximum value among the port numbers of all CSI-RS resources on all cells of the first terminal.

[0448] • Optionally, the second port number N2_port is determined according to the port number of the CSI-RS resource with the most ports among all CSI-RS resources on all cells in the first cell group of the first terminal. For example, the second port number N2_port is the maximum value among the port numbers of all CSI-RS resources in the first cell group.

[0449] UE recommendation reporting

[0450] Optionally, the first terminal device reports first reporting information to the first network device, the first reporting information indicating a first port number suggested by the first terminal device, the first port number being for CSI-RS resource.

[0451] • Optionally, the first reporting information indicates a first port number suggested by the first terminal device for CSI-RS resource on all cells. The advantage is that the signaling is simple and the UE implementation complexity is low.

[0452] • Optionally, the first reporting information indicates R_C1 cells (one or more R_C1 cells can be indicated), i.e., the first reporting information indicates R_C1 cells and a first port number suggested by the first terminal device for CSI-RS resource on the R_C1 cells. For example, a suggested value of the first port number for CSI-RS resource is indicated for each R_C1 cell separately. For another example, one suggested value of the first port number for CSI-RS resource is indicated for multiple R_C1 cells. The advantage is that the flexibility is better and the signaling overhead is large.

[0453] • Optionally, the first reporting information indicates R_B1 frequency bands (one or more R_B1 frequency bands can be indicated), i.e., the first reporting information indicates R_B1 frequency bands and a first port number suggested by the first terminal device for CSI-RS resource on the R_B1 frequency bands. For example, a suggested value of the first port number for CSI-RS resource is indicated for each R_B1 frequency band separately. For another example, one suggested value of the first port number for CSI-RS resource is indicated for multiple R_B1 frequency bands. The advantage is that there is a certain flexibility and the complexity is relatively low.

[0454] UE capability reporting

[0455] Optionally, before the above steps, the first terminal device reports a first terminal capability (first capability) to the first network device, the first terminal capability supporting MAC CE signaling (transmitting the first indication information through MAC CE signaling) to indicate a first port number, the first port number being for CSI-RS resource.

[0456] • Optionally, the first terminal capability is reported through UE capability signaling. The advantage is that through UE capability signaling reporting, the UE capability can be avoided to be reported repeatedly in different cells.

[0457] Optionally, the first terminal capability is transmitted via RRC signaling or MAC CE.

[0458] Optionally, the first terminal capability is reported on a frequency band basis (i.e., different frequency bands can independently report their corresponding capabilities, per band). The advantage is that independent reporting of different frequency bands allows the terminal to have greater flexibility. For example, the terminal can support this function on one or more bands, but not on other bands, thus allowing more terminal devices to support this new function.

[0459] Optionally, the first terminal capability is reported independently per band combination. The advantage is that independent reporting of different band combinations allows for greater flexibility in terminal implementation. For example, a terminal device may not support a function under one band combination but supports it under another, thus enabling more terminal devices to support this new function.

[0460] Optionally, the first terminal capability is reported independently for each band in a band combination (i.e., bands in different band combinations can be reported independently, per band per band combination). The advantage is that independent reporting of different band combinations allows terminal devices greater flexibility. For example, a terminal device may not support this function under a certain CA, but it may support it under certain bands in another CA combination, thus allowing more terminal devices to support this new function.

[0461] Optionally, the first terminal capability is to report each carrier on each frequency band within a band combination independently (i.e., different carriers (CCs) within different band combinations can be reported independently, per CC per band per band combination, or FSPC). The advantage is that independent reporting of different band combinations, and the independent reporting of different carriers within a single band, allows terminal devices greater flexibility, enabling more terminal devices to support this new function.

[0462] • Optionally, the first terminal capability is reported per frequency range (FR) (i.e. different FRs can be reported independently, per FR, i.e. FR1 and FR2 are reported independently). The advantage is that different FRs are reported independently, which can give the terminal device more freedom, for example, the terminal device does not support this function in low frequency (FR1), but supports this function in FR2 (high frequency), so that more terminal devices can support this new function.

[0463] • Optionally, the first terminal capability is reported per UE (i.e. if the UE reports this capability, it can support this capability on all frequency bands). The advantage is to reduce the signaling overhead of terminal device capability reporting.

[0464] Optionally, before the above steps, the first terminal device reports a second terminal capability (second capability) to the first network device, which supports the indication of the first port number by DCI signaling (transmits the first indication information by DCI signaling), and the first port number is for the CSI-RS resource.

[0465] For the second terminal capability, the third terminal capability (third capability), the fourth terminal capability (fourth capability), each of which can be reported according to the first terminal capability, the options are not repeated.

[0466] • For example, it can be reported per band, or per band combination, or per band per band combination, or per CC per band per band combination (or FSPC), or per FR, or per UE

[0467] Optionally, the first terminal capability and the third terminal capability can be reported by the same signaling, or can be the same terminal capability, or can be different terminal capabilities.

[0468] Optionally, the second terminal capability and the fourth terminal capability can be reported by the same signaling, or can be the same terminal capability, or can be different terminal capabilities.

[0469] Optionally, the indication or configuration of the network device needs to match the capability reported by the UE.

[0470] In the above embodiments, the first port number indicated by the first indication information is applied to the CSI-RS resources on 1 or more cells, or the CSI-RS resources on one or more BWPs in a cell. These schemes above are friendly to UE implementation (as they are simple for UE implementation).

[0471] Optionally, the first port number indicated by the first indication information is applied to a smaller granularity of domain:

[0472] • The various schemes introduced in the above embodiments can be combined with the following examples, which will not be repeated one by one.

[0473] • For example, it can be applied to one CSI-RS resource set, i.e. when the channel measurement / CSI reporting of the first terminal device involves the CSI-RS resources in this CSI-RS resource set, the first terminal device considers N1_port ports in the CSI-RS resources in this CSI-RS resource set.

[0474] o If the port number of a certain CSI-RS resource is less than N1_port, the first terminal device uses / considers all ports of the certain CSI-RS resource.

[0475] o Optionally, the first indication information also indicates the one CSI-RS resource set.

[0476] • For example, it can be applied to one triggering state, i.e. when it involves the CSI-RS resources corresponding to the one triggering state, the first terminal device considers N1_port ports in the CSI-RS resources in this CSI-RS resource set.

[0477] o If the port number of a certain CSI-RS resource is less than N1_port, the first terminal device uses / considers all ports of the certain CSI-RS resource.

[0478] o Optionally, the first indication information also indicates the one triggering state.

[0479] In the foregoing method embodiments, the technical solutions of the present application are described from the perspective of the interaction between the first device and the second device. The steps performed by the first device can be implemented alone to form a port indication method on the first device side, and the steps performed by the second device can be implemented alone to form a port indication method on the second device side. In addition, the embodiments provided in the present application can be combined to form new embodiments, which are all within the protection scope of the present application.

[0480] The following is a device embodiment of the present application, which can be used to execute the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

[0481] Please refer to FIG. 3, which shows a block diagram of a port indication device according to an embodiment of the present application. The device has the function of implementing the port indication method on the first device side described above, which can be implemented by hardware or by executing corresponding software by hardware. The device can be the first device described above or can be arranged in the first device. As shown in FIG. 3, the device 300 can include a receiving module 310.

[0482] The receiving module 310 receives first indication information sent by the second device, wherein the first indication information is used to indicate a first port number, and the number of ports used by the first device to measure the first reference signal resource is less than or equal to the first port number.

[0483] Optionally, the first port number is less than or equal to a second port number, and the second port number is the maximum number of ports corresponding to one or more reference signal resources in a first reference signal resource group, and the first reference signal resource group contains the first reference signal resource.

[0484] Optionally, the first port number belongs to a first set, and the first set contains a candidate number of ports corresponding to one or more first reference signal resources.

[0485] Optionally, the first indication information is carried in first information, and the first information is upper layer information, or the first information is physical layer information.

[0486] Optionally, the first information further includes one or more of the following information:

[0487] First cell information, wherein the first cell information is used to indicate a cell to which the first information belongs;

[0488] First bandwidth part (BWP) information, wherein the first BWP information is used to indicate a BWP to which the first information belongs.

[0489] second cell information, the second cell information being used for indicating one or more first cells, the first information being applied to the one or more first cells;

[0490] second BWP information, the second BWP information being used for indicating one or more first BWPs, the first information being applied to the one or more first BWPs;

[0491] modulation and coding information;

[0492] rank information;

[0493] scheduling offset information;

[0494] stream number information.

[0495] Optionally, the first indication information takes effect after a first application time.

[0496] Optionally, in a case where the first port number is greater than a third port number, the first indication information takes effect after the first application time, the third port number being a first port number indicated by last received first indication information by the first device.

[0497] Optionally, the first application time is determined based on a capability of the first device.

[0498] Optionally, the first application time is predefined; or,

[0499] the first application time is configured by the second device.

[0500] Optionally, the first information is physical layer information, and the first information comprises a first indication field, the first indication field being used for indicating the first port number.

[0501] Optionally, a bit number of the first indication field is determined based on a second port number, the second port number being a maximum number of ports corresponding to one or more reference signal resources in a first reference signal resource group, the first reference signal resource group comprising the first reference signal resource; or,

[0502] the bit number of the first indication field is configured by the second device.

[0503] Optionally, in a case where a value of the first indication field is a first value, the first indication field is used for indicating the first port number; and / or,

[0504] in a case where the value of the first indication field is a second value, the first indication field is used for indicating information other than the first port number.

[0505] Optionally, the first indication field is used to indicate a first information combination, and the first information combination comprises at least the first port number.

[0506] Optionally, the first information is physical layer information, and the first information is one of the following information:

[0507] Downlink control information (DCI) used for scheduling downlink data;

[0508] DCI used for scheduling uplink data;

[0509] Sidelink control information (SCI) used for scheduling sidelink data;

[0510] DCI used for non-scheduled data transmission;

[0511] SCI used for non-scheduled data transmission.

[0512] Optionally, the first information is physical layer information for a plurality of terminal devices, and the plurality of terminal devices comprises the first device.

[0513] Optionally, the number of ports corresponding to the first reference signal resource is N, and N is a positive integer,

[0514] In a case where the N is less than or equal to the first port number, the first device performs channel measurement and / or reports a reference signal measurement report based on the N ports; and / or,

[0515] In a case where the N is greater than the first port number, the first device performs channel measurement and / or reports a reference signal measurement report based on a first group of ports, and the number of ports included in the first group of ports is less than or equal to the first port number.

[0516] Optionally, the first group of ports is M ports with the smallest index among the ports corresponding to the first reference signal resource; or,

[0517] The first group of ports is M ports with the largest index among the ports corresponding to the first reference signal resource; or,

[0518] The first group of ports is determined based on a first rule, and the first rule is configured by the second device; or,

[0519] The first group of ports is indicated by the second device.

[0520] Wherein, M is the first port number, and M is a positive integer.

[0521] Optionally, the first port number is applied to all cells configured or activated by the first device; or,

[0522] The first port number is applied to an indicated BWP in all cells configured or activated by the first device; or

[0523] The first port number is applied to all BWP in all cells configured or activated by the first device.

[0524] Optionally, the first port number is applied to one or more first cells; or

[0525] The first port number is applied to an indicated BWP in the one or more first cells; or

[0526] The first port number is applied to all BWP in the one or more first cells.

[0527] Optionally, the one or more first cells are indicated by the first information; or

[0528] The one or more first cells are corresponding cells of data transmission scheduled by the first information; or

[0529] The one or more first cells are cells where the first information is transmitted.

[0530] Optionally, the first port number is applied to a third cell, and the first indication information corresponds to the third cell.

[0531] Optionally, the third cell is indicated by the first information; or

[0532] The third cell is a corresponding cell of data transmission scheduled by the first information; or

[0533] The third cell is a cell where the first information is transmitted.

[0534] Optionally, the first port number is applied to an activated BWP in the third cell; or

[0535] The first port number is applied to all BWP in the third cell.

[0536] Optionally, the first port number is applied to all cells in a first cell group; or

[0537] The first port number is applied to an indicated BWP in all cells in the first cell group; or

[0538] The first port number is applied to all BWP in all cells in the first cell group.

[0539] Optionally, the first cell group is indicated by the second device; or

[0540] The first cell group contains all cells on a frequency band where the third cell is located, and the first indication information corresponds to the third cell.

[0541] Optionally, the module 310 is further configured to receive second indication information sent by the second device, wherein the second indication information is used to indicate one or more cell groups, and the one or more cell groups contain the first cell group, and the third cell belongs to the first cell group, or the second indication information is used to indicate one or more second frequency bands, and the first cell group contains all cells on the one or more second frequency bands.

[0542] Optionally, the second port number is determined according to a port number corresponding to a reference signal resource with the most corresponding ports among all reference signal resources on all cells configured or activated by the first device; or

[0543] the second port number is determined according to a port number corresponding to a reference signal resource with the most corresponding ports among all reference signal resources on one or more first cells, and the first information is applied to the one or more first cells; or

[0544] the second port number is determined according to a port number corresponding to a reference signal resource with the most corresponding ports among all reference signal resources on an activated BWP of a third cell, and the first indication information corresponds to the third cell; or

[0545] the second port number is determined according to a port number corresponding to a reference signal resource with the most corresponding ports among all reference signal resources on a third cell, and the first indication information corresponds to the third cell; or

[0546] the second port number is determined according to a port number corresponding to a reference signal resource with the most corresponding ports among all reference signal resources on all cells in a first cell group.

[0547] Optionally, the apparatus 300 further includes a sending module (not shown in the figure).

[0548] The sending module is configured to send first reporting information to the second device, and the first reporting information is used to indicate a fourth port number, and the fourth port number is a value of the first port number suggested by the first device.

[0549] Optionally, the first reporting information is used to indicate the first port number suggested by the first device for all reference signal resources on all cells configured or activated by the first device; or

[0550] The first reporting information is used to indicate the first number of ports suggested by the first device for all reference signal resources on an active BWP of all cells configured or activated by the first device; or

[0551] The first reporting information is used to indicate the first number of ports suggested by the first device for all reference signal resources on one or more fourth cells; or

[0552] The first reporting information is used to indicate the first number of ports suggested by the first device for all reference signal resources on one or more third frequency bands.

[0553] Optionally, the sending module is further configured to send first capability information to the second device, the first capability information including one or more of the following:

[0554] A first capability, the first capability being used to indicate that the first device supports upper-layer information carrying the first indication information;

[0555] A second capability, the second capability being used to indicate that the first device supports physical-layer information carrying the first indication information;

[0556] A third capability, the third capability being used to determine a first application time of the first indication information carried by the upper-layer information;

[0557] A fourth capability, the fourth capability being used to determine a first application time of the first indication information carried by the physical-layer information.

[0558] Optionally, the first capability information is reported independently for each frequency band; or

[0559] The first capability information is reported independently for each frequency band combination; or

[0560] The first capability information is reported independently for each frequency band in each frequency band combination; or

[0561] The first capability information is reported independently for each carrier on each frequency band in each frequency band combination; or

[0562] The first capability information is reported independently for each frequency band range; or

[0563] The first capability information is reported independently for each first device.

[0564] Optionally, the first capability information is terminal capability information; or the first capability information is upper-layer signaling.

[0565] Optionally, the second device is a terminal device; or the second device is a network device.

[0566] The technical scheme provided by the embodiment of the application is that the second device indicates a first port number to the first device, and the first device measures a port number of a first reference signal resource, which is less than or equal to the first port number. The second device dynamically adjusts the first port number. When the service transmission data requirement is high, the first device can measure more ports of the first reference signal resource, to ensure normal service. When the service transmission data requirement is low, the first device can measure a small number of ports of the first reference signal resource, to reduce the calculation resource and / or storage resource occupied by the first device in measuring the ports of the first reference signal resource, and to reduce the power consumption of the first device.

[0567] Please refer to FIG. 4, which shows a block diagram of a port indication apparatus provided by an embodiment of the application. The apparatus has the function of implementing the above-mentioned port indication method on the second device side, which can be implemented by hardware, or by executing corresponding software by hardware. The apparatus can be the second device introduced above, or can be arranged in the second device. As shown in FIG. 4, the apparatus 400 can include a sending module 410.

[0568] The sending module 410 is configured to send first indication information to the first device, the first indication information being used to indicate a first port number, and a port number of a first reference signal resource measured by the first device being less than or equal to the first port number.

[0569] Optionally, the first port number is less than or equal to a second port number, and the second port number is the maximum number of ports corresponding to one or more reference signal resources in a first reference signal resource group, and the first reference signal resource group includes the first reference signal resource.

[0570] Optionally, the first port number belongs to a first set, and the first set includes one or more candidate numbers of ports corresponding to the first reference signal resource.

[0571] Optionally, the first indication information is carried in first information, and the first information is upper layer information, or the first information is physical layer information.

[0572] Optionally, the first information further includes one or more of the following information:

[0573] First cell information, the first cell information being used to indicate a cell to which the first information belongs;

[0574] First bandwidth part (BWP) information, the first BWP information being used to indicate a BWP to which the first information belongs.

[0575] second cell information, the second cell information being used for indicating one or more first cells, the first information being applied to the one or more first cells;

[0576] second BWP information, the second BWP information being used for indicating one or more first BWPs, the first information being applied to the one or more first BWPs;

[0577] modulation and coding information;

[0578] rank information;

[0579] scheduling offset information;

[0580] stream number information.

[0581] Optionally, the first indication information takes effect after a first application time.

[0582] Optionally, in a case where the first port number is greater than a third port number, the first indication information takes effect after the first application time, the third port number being a first port number indicated by last received first indication information by the first device.

[0583] Optionally, the first application time is determined based on a capability of the first device.

[0584] Optionally, the first application time is predefined; or,

[0585] the first application time is configured by the second device.

[0586] Optionally, the first information is physical layer information, and the first information comprises a first indication field, the first indication field being used for indicating the first port number.

[0587] Optionally, a bit number of the first indication field is determined based on a second port number, the second port number being a maximum number of ports corresponding to one or more reference signal resources respectively in a first reference signal resource group, the first reference signal resource group comprising the first reference signal resource; or,

[0588] the bit number of the first indication field is configured by the second device.

[0589] Optionally, in a case where a value of the first indication field is a first value, the first indication field is used for indicating the first port number; and / or,

[0590] in a case where the value of the first indication field is a second value, the first indication field is used for indicating information other than the first port number.

[0591] Optionally, the first indication field is used to indicate a first information combination, and the first information combination comprises at least the first port number.

[0592] Optionally, the first information is physical layer information, and the first information is one of the following information:

[0593] Downlink control information (DCI) used for scheduling downlink data;

[0594] DCI used for scheduling uplink data;

[0595] Sidelink control information (SCI) used for scheduling sidelink data;

[0596] DCI used for non-scheduled data transmission;

[0597] SCI used for non-scheduled data transmission.

[0598] Optionally, the first information is physical layer information for a plurality of terminal devices, and the plurality of terminal devices comprises the first device.

[0599] Optionally, the number of ports corresponding to the first reference signal resource is N, N is a positive integer,

[0600] In a case where the N is less than or equal to the first port number, the first device performs channel measurement and / or reports a reference signal measurement report based on the N ports; and / or,

[0601] In a case where the N is greater than the first port number, the first device performs channel measurement and / or reports a reference signal measurement report based on a first group of ports, and the number of ports included in the first group of ports is less than or equal to the first port number.

[0602] Optionally, the first group of ports is M ports with the smallest index among the ports corresponding to the first reference signal resource; or,

[0603] The first group of ports is M ports with the largest index among the ports corresponding to the first reference signal resource; or,

[0604] The first group of ports is determined based on a first rule, and the first rule is configured by the second device; or,

[0605] The first group of ports is indicated by the second device.

[0606] Wherein, M is the first port number, and M is a positive integer.

[0607] Optionally, the first port number is applied to all cells configured or activated by the first device; or,

[0608] the first port number is applied to all BWPs in all cells configured or activated by the first device; or,

[0609] the first port number is applied to all BWPs in all cells configured or activated by the first device.

[0610] Optionally, the first port number is applied to one or more first cells; or,

[0611] the first port number is applied to indicated BWPs in the one or more first cells; or,

[0612] the first port number is applied to all BWPs in the one or more first cells.

[0613] Optionally, the one or more first cells are indicated by the first information; or,

[0614] the one or more first cells are cells corresponding to data transmission scheduled by the first information; or,

[0615] the one or more first cells are cells where the first information is transmitted.

[0616] Optionally, the first port number is applied to a third cell, and the first indication information corresponds to the third cell.

[0617] Optionally, the third cell is indicated by the first information; or,

[0618] the third cell is a cell corresponding to data transmission scheduled by the first information; or,

[0619] the third cell is a cell where the first information is transmitted.

[0620] Optionally, the first port number is applied to an activated BWP in the third cell; or,

[0621] the first port number is applied to all BWPs in the third cell.

[0622] Optionally, the first port number is applied to all cells in a first cell group; or,

[0623] the first port number is applied to indicated BWPs in all cells in the first cell group; or,

[0624] the first port number is applied to all BWPs in all cells in the first cell group.

[0625] Optionally, the first cell group is indicated by the second device; or,

[0626] The first cell group contains all cells on a frequency band where the third cell is located, and the first indication information corresponds to the third cell.

[0627] Optionally, the sending module 410 is further configured to send second indication information to the first device, where the second indication information is used to indicate one or more cell groups, and the one or more cell groups contain the first cell group, and the third cell belongs to the first cell group, or the second indication information is used to indicate one or more second frequency bands, and the first cell group contains all cells on the one or more second frequency bands.

[0628] Optionally, the second port number is determined according to a port number corresponding to a reference signal resource with the most corresponding ports among all reference signal resources on all cells configured or activated by the first device; or

[0629] The second port number is determined according to a port number corresponding to a reference signal resource with the most corresponding ports among all reference signal resources on one or more first cells, and the first information is applied to the one or more first cells; or

[0630] The second port number is determined according to a port number corresponding to a reference signal resource with the most corresponding ports among all reference signal resources on an activated BWP of a third cell, and the first indication information corresponds to the third cell; or

[0631] The second port number is determined according to a port number corresponding to a reference signal resource with the most corresponding ports among all reference signal resources on a third cell, and the first indication information corresponds to the third cell; or

[0632] The second port number is determined according to a port number corresponding to a reference signal resource with the most corresponding ports among all reference signal resources on all cells in a first cell group.

[0633] Optionally, the apparatus 400 further includes a receiving module (not shown in the figure).

[0634] The receiving module is configured to receive first reporting information sent by the first device, and the first reporting information is used to indicate a fourth port number, and the fourth port number is a value of the first port number suggested by the first device.

[0635] Optionally, the first reporting information is used to indicate the first port number suggested by the first device for all reference signal resources on all cells configured or activated by the first device; or

[0636] The first reporting information is used to indicate the first number of ports suggested by the first device for all reference signal resources on all activated BWP of all cells configured or activated by the first device; or

[0637] The first reporting information is used to indicate the first number of ports suggested by the first device for all reference signal resources on one or more fourth cells; or

[0638] The first reporting information is used to indicate the first number of ports suggested by the first device for all reference signal resources on one or more third frequency bands.

[0639] Optionally, the receiving module is further configured to receive first capability information sent by the first device, wherein the first capability information comprises one or more of the following:

[0640] A first capability, wherein the first capability is used to indicate that the first device supports upper layer information carrying the first indication information;

[0641] A second capability, wherein the second capability is used to indicate that the first device supports physical layer information carrying the first indication information;

[0642] A third capability, wherein the third capability is used to determine a first application time of the first indication information carried by the upper layer information;

[0643] A fourth capability, wherein the fourth capability is used to determine a first application time of the first indication information carried by the physical layer information.

[0644] Optionally, the first capability information is reported independently for each frequency band; or

[0645] The first capability information is reported independently for each frequency band combination; or

[0646] The first capability information is reported independently for each frequency band in each frequency band combination; or

[0647] The first capability information is reported independently for each carrier on each frequency band in each frequency band combination; or

[0648] The first capability information is reported independently for each frequency band range; or

[0649] The first capability information is reported independently for each first device.

[0650] Optionally, the first capability information is terminal capability information; or the first capability information is upper layer signaling.

[0651] Optionally, the second device is a terminal device; or the second device is a network device.

[0652] The technical scheme provided by the embodiment of the application is that the second device indicates a first port number to the first device, and the first device needs to measure a port number of a first reference signal resource, which is less than or equal to the first port number. The first port number is dynamically adjusted by the second device. When the requirement of service transmission data is high, the first device can measure more ports of the first reference signal resource, to ensure the normal operation of the service. When the requirement of service transmission data is low, the first device can measure a small number of ports of the first reference signal resource, to reduce the calculation resource and / or storage resource occupied by the first device in measuring the ports of the first reference signal resource, and to reduce the power consumption of the first device.

[0653] It should be noted that the apparatus provided by the above embodiment is only used as an example to divide the above various functional modules to implement the functions thereof, and in actual applications, the above functions can be completed by different functional modules according to actual needs, that is, the content structure of the apparatus is divided into different functional modules to complete all or part of the above-described functions.

[0654] As to the apparatus in the above embodiment, the specific manners in which various modules perform operations have been described in detail in the embodiment of the method, and will not be described here in detail. For details not described in the apparatus embodiment, reference can be made to the above method embodiment.

[0655] Please refer to FIG. 5, which shows a structural schematic diagram of a communication apparatus provided by an embodiment of the application. The communication apparatus can be the first device or the second device described above. The communication apparatus 500 can include at least one of a processor 501, a transceiver 502, and a memory 503. The processor 501 is configured to implement various processing functions of the communication apparatus 500, such as generating information to be sent, processing received information, controlling sending and / or receiving, and the like. The transceiver 502 is configured to implement the functions of sending and / or receiving, such as implementing the functions of the receiving module 310 described above, or implementing the functions of the sending module 410 described above.

[0656] The processor 501 includes one or more processing cores. The processor 501 performs various functional applications and information processing by running software programs and modules.

[0657] The transceiver 502 can include a receiver and a transmitter. For example, the receiver and the transmitter can be implemented as the same wireless communication component, which can include a wireless communication chip and a radio frequency antenna.

[0658] The memory 503 can be connected to the processor 501 and the transceiver 502.

[0659] The memory 503 can be used to store a computer program executed by the processor 501, and the processor 501 is configured to execute the computer program to implement the steps in the above method embodiments.

[0660] In some embodiments, the communication device 500 is the first device in the above embodiments, and the transceiver 502 is configured to receive first indication information sent by a second device, the first indication information being used to indicate a first port number, and a port number of the first device for measuring a first reference signal resource is less than or equal to the first port number.

[0661] In some embodiments, the communication device 500 is the second device in the above embodiments, and the transceiver 502 is configured to send first indication information to a first device, the first indication information being used to indicate a first port number, and a port number of the first device for measuring a first reference signal resource is less than or equal to the first port number.

[0662] For details not described in the present embodiment, refer to the above embodiments, which will not be repeated here.

[0663] In addition, the memory can be implemented by any type of volatile or non-volatile storage devices or a combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable read-only memories, erasable programmable read-only memories, static random access memories, read-only memories, magnetic memories, flash memories, programmable read-only memories.

[0664] The embodiments of the present application also provide a computer readable storage medium, the storage medium stores a computer program, and the computer program is used to be executed by a processor to implement the above-mentioned port indication method of the first device side, or to implement the above-mentioned port indication method of the second device side. In some embodiments, the computer readable storage medium can include: ROM (Read-Only Memory), RAM (Random-Access Memory), SSD (Solid State Drives) or optical disc, etc. Among them, the random access memory can include ReRAM (Resistance Random Access Memory) and DRAM (Dynamic Random Access Memory).

[0665] The embodiments of the present application further provide a chip, which comprises a programmable logic circuit and / or program instructions, and when the chip is running, is used to implement the port indication method of the first device side or implement the port indication method of the second device side.

[0666] The embodiments of the present application further provide a computer program product, which comprises computer instructions stored in a computer readable storage medium, and a processor reads and executes the computer instructions from the computer readable storage medium to implement the port indication method of the first device side or implement the port indication method of the second device side.

[0667] It should be understood that the "indication" mentioned in the embodiments of the present application can be direct indication, indirect indication, or can represent an associated relationship. For example, A indicates B, which can mean that B can be obtained by A, or A indirectly indicates B, for example, A indicates C, and B can be obtained by C, or A and B have an associated relationship.

[0668] In the description of the embodiments of the present application, the term "corresponding" can represent a direct or indirect corresponding relationship between the two, or an associated relationship between the two, or an indication and being indicated, configuration and being configured relationship.

[0669] In some embodiments of the present application, "predefined" can be realized by pre-storing corresponding codes, tables or other means for indicating related information in devices (for example, including terminal devices and network devices), and the specific implementation manner of the present application is not limited. For example, pre-defined can mean defined in a protocol.

[0670] In some embodiments of the present application, the "protocol" can refer to a standard protocol in the communication field, which can include BLE protocol, Wi-Fi protocol and related protocols applied to future communication systems, and the present application is not limited to this.

[0671] "Multiple" mentioned in the present text refers to two or more than two. "And / or" describes the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can mean that A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after are in an "or" relationship.

[0672] "Greater than or equal to" mentioned in the present text can mean greater than or equal to, and "less than or equal to" can mean less than or equal to.

[0673] In addition, the step numbers described herein only exemplarily show a possible execution sequence between steps, and in some other embodiments, the above steps can also be executed in a sequence different from the numbers, such as two steps with different numbers are executed at the same time, or two steps with different numbers are executed in a sequence opposite to the illustration, which is not limited in the embodiments of the present application.

[0674] Those skilled in the art can realize that, in one or more examples described above, the functions described in the embodiments of the present application can be implemented in hardware, software, firmware or any combination thereof. When implemented in software, the functions can be stored in a computer readable medium or transmitted as one or more instructions or codes on a computer readable medium. The computer readable medium includes computer storage medium and communication medium, and the communication medium includes any medium that facilitates the transfer of computer programs from one place to another. The storage medium can be any available medium accessible by a general or special purpose computer.

[0675] The above only describes exemplary embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A port indication method, characterized by, The method is performed by a first device, and the method comprises: receiving first indication information sent by a second device, the first indication information being used to indicate a first port number, a port number of a first reference signal resource measured by the first device being less than or equal to the first port number.

2. The method of claim 1, wherein, The first port number is less than or equal to a second port number, the second port number being a maximum number of ports corresponding to one or more reference signal resources in a first reference signal resource group, the first reference signal resource group comprising the first reference signal resource.

3. The method according to claim 1 or 2, characterized in that, The first port number belongs to a first set, the first set comprising candidate numbers of ports corresponding to one or more first reference signal resources.

4. The method according to any one of claims 1 to 3, characterized in that, The first indication information is carried in first information, the first information being upper layer information, or the first information being physical layer information.

5. The method of claim 4, wherein, The first information further comprises one or more of the following information: first cell information, the first cell information being used to indicate a cell to which the first information belongs; first bandwidth part (BWP) information, the first BWP information being used to indicate a BWP to which the first information belongs; second cell information, the second cell information being used to indicate one or more first cells, the first information being applicable to the one or more first cells; second BWP information, the second BWP information being used to indicate one or more first BWPs, the first information being applicable to the one or more first BWPs; modulation and coding information; rank information; scheduling offset information; stream number information.

6. The method according to claim 4 or 5, characterized in that, The first indication information takes effect after a first application time.

7. The method of claim 6, wherein, In a case where the first port number is greater than a third port number, the first indication information takes effect after the first application time, the third port number being a first port number indicated by last received first indication information of the first device.

8. The method according to claim 6 or 7, characterized in that, The first application time is determined based on a capability of the first device.

9. The method of claim 6 or 7, wherein the first application time is predefined; or the first application time is configured by the second device.

10. The method according to any one of claims 4 to 9, characterized in that, The first information is physical layer information, and the first information comprises a first indication field, the first indication field being used to indicate the first port number.

11. The method of claim 10, wherein a bit number of the first indication field is determined based on a second port number, the second port number being a maximum number of ports corresponding to one or more reference signal resources in a first reference signal resource group, the first reference signal resource group comprising the first reference signal resource; or the bit number of the first indication field is configured by the second device.

12. The method of claim 10 or 11, wherein in a case where a value of the first indication field is a first value, the first indication field is used to indicate the first port number; and / or in a case where the value of the first indication field is a second value, the first indication field is used to indicate information other than the first port number.

13. The method of claim 10 or 11, wherein, The first indication field is used to indicate a first information combination, and the first information combination at least includes the first port number.

14. The method according to any one of claims 4 to 13, characterized in that, The first information is physical layer information, and the first information is one of the following information: Downlink control information (DCI) used for scheduling downlink data; DCI used for scheduling uplink data; Sidelink control information (SCI) used for scheduling sidelink data; DCI used for non-scheduled data transmission; SCI used for non-scheduled data transmission.

15. The method of claim 14, wherein, The first information is physical layer information for a plurality of terminal devices, and the plurality of terminal devices includes the first device.

16. The method according to any one of claims 1 to 15, characterized in that, The number of ports corresponding to the first reference signal resource is N, N is a positive integer, In a case where the N is less than or equal to the first port number, the first device performs channel measurement and / or reports a reference signal measurement report based on the N ports; and / or, In a case where the N is greater than the first port number, the first device performs channel measurement and / or reports a reference signal measurement report based on a first group of ports, and the number of ports included in the first group of ports is less than or equal to the first port number.

17. The method of claim 16, wherein: the first group of ports are M ports with the smallest indexes among the ports corresponding to the first reference signal resource; or the first group of ports are M ports with the largest indexes among the ports corresponding to the first reference signal resource; or the first group of ports are determined based on a first rule, and the first rule is configured by the second device; or the first group of ports are indicated by the second device; wherein M is the first port number, and M is a positive integer.

18. The method of any one of claims 1 to 17, wherein: the first port number is applied to all cells configured or activated by the first device; or the first port number is applied to an indicated BWP in all cells configured or activated by the first device; or the first port number is applied to all BWPs in all cells configured or activated by the first device.

19. The method of any one of claims 1 to 18, wherein: the first port number is applied to one or more first cells; or the first port number is applied to an indicated BWP in the one or more first cells; or the first port number is applied to all BWPs in the one or more first cells.

20. The method of claim 19, wherein: the one or more first cells are indicated by the first information; or the one or more first cells are cells corresponding to data transmission scheduled by the first information; or the one or more first cells are cells where the first information is transmitted. the first port number is applied to a third cell, and the first indication information corresponds to the third cell.

21. The method according to any one of claims 1 to 17, characterized in that, 22. The method of claim 21, wherein: the third cell is indicated by the first information; or the third cell is a cell corresponding to data transmission scheduled by the first information; or the third cell is a cell where the first information is transmitted. The third cell is a cell where the first information transmission is located.

23. The method of claim 21 or 22, wherein, the first port number is applied to an active BWP in the third cell; or, the first port number is applied to all BWPs in the third cell.

24. The method of any of claims 1 to 17, wherein, the first port number is applied to all cells in a first cell group; or, the first port number is applied to an indicated BWP in all cells in the first cell group; or, the first port number is applied to all BWPs in all cells in the first cell group.

25. The method of claim 24, wherein, the first cell group is indicated by the second device; or, the first cell group comprises all cells on a frequency band where a third cell is located, and the first indication information corresponds to the third cell.

26. The method of claim 25, wherein, The method further comprises: receiving second indication information sent by a second device; wherein the second indication information is used to indicate one or more cell groups, the one or more cell groups comprise the first cell group, and the third cell belongs to the first cell group, or the second indication information is used to indicate one or more second frequency bands, and the first cell group comprises all cells on the one or more second frequency bands.

27. The method of any one of claims 18 to 26, wherein, the second port number is determined according to a port number corresponding to a reference signal resource with the most corresponding ports among all reference signal resources on all cells configured or activated by the first device; or, the second port number is determined according to a port number corresponding to a reference signal resource with the most corresponding ports among all reference signal resources on one or more first cells, and the first information is applied to the one or more first cells; or, the second port number is determined according to a port number corresponding to a reference signal resource with the most corresponding ports among all reference signal resources on an active BWP of a third cell, and the first indication information corresponds to the third cell; or, the second port number is determined according to a port number corresponding to a reference signal resource with the most corresponding ports among all reference signal resources on a third cell, and the first indication information corresponds to the third cell; or, the second port number is determined according to a port number corresponding to a reference signal resource with the most corresponding ports among all reference signal resources on all cells in a first cell group.

28. The method of any one of claims 1 to 27, wherein, The method further comprises: sending first reporting information to the second device, the first reporting information being used to indicate a fourth port number, and the fourth port number being a value of the first port number suggested by the first device.

29. The method of claim 28, wherein, the first reporting information is used to indicate the first port number suggested by the first device for all reference signal resources on all cells configured or activated by the first device; or, The first reporting information is used to indicate the first port number suggested by the first device for all reference signal resources on all activated BWP of all cells configured or activated by the first device. Or, The first reporting information is used to indicate the first port number suggested by the first device for all reference signal resources on one or more fourth cells. Or, The first reporting information is used to indicate the first port number suggested by the first device for all reference signal resources on one or more third frequency bands.

30. The method of any one of claims 1 to 29, wherein, The method further comprises: sending first capability information to the second device, the first capability information comprising one or more of: a first capability used to indicate that the first device supports upper layer information carrying the first indication information; a second capability used to indicate that the first device supports physical layer information carrying the first indication information; a third capability used to determine a first application time of the first indication information carried by the upper layer information; a fourth capability used to determine a first application time of the first indication information carried by the physical layer information.

31. The method of claim 30, wherein: the first capability information is reported independently for each frequency band; or the first capability information is reported independently for each frequency band combination; or the first capability information is reported independently for each frequency band in each frequency band combination; or the first capability information is reported independently for each carrier on each frequency band in each frequency band combination; or the first capability information is reported independently for each frequency band range; or the first capability information is reported independently for each first device.

32. The method of claim 30 or 31, wherein, The first capability information is terminal capability information; or the first capability information is upper layer signaling.

33. The method of any one of claims 1 to 31, wherein, The second device is a terminal device; or the second device is a network device.

34. A port indication method, comprising: The method is performed by a second device, and the method comprises: sending first indication information to a first device, the first indication information being used to indicate a first port number, a port number at which the first device measures a first reference signal resource being less than or equal to the first port number.

35. The method of claim 34, wherein, The first port number is less than or equal to a second port number, the second port number being a maximum number of ports corresponding to one or more reference signal resources in a first reference signal resource group, the first reference signal resource group comprising the first reference signal resource.

36. The method of claim 34 or 35, wherein, The first port number belongs to a first set, the first set comprising a candidate number of ports corresponding to one or more of the first reference signal resources.

37. The method of any one of claims 34 to 36, wherein, The first indication information is carried in first information, the first information being upper layer information, or the first information being physical layer information.

38. The method of claim 37, wherein, The first information further comprises one or more of: first cell information used to indicate a cell to which the first information belongs; first bandwidth part (BWP) information used to indicate a BWP to which the first information belongs; second cell information, the second cell information being used for indicating one or more first cells, the first information being applied to the one or more first cells; second BWP information, the second BWP information being used for indicating one or more first BWPs, the first information being applied to the one or more first BWPs; modulation and coding information; rank information; scheduling offset information; stream number information. The first indication information takes effect after a first application time.

39. The method of claim 37 or 38, wherein, In a case where the first port number is greater than a third port number, the first indication information takes effect after the first application time, the third port number being a first port number indicated by last received first indication information by the first device.

40. The method of claim 39, wherein, The first application time is determined based on a capability of the first device.

41. The method of claim 39 or 40, wherein, 42. The method of claim 39 or 40, wherein The first application time is predefined; or The first application time is configured by the second device. The first information is physical layer information, and the first information comprises a first indication field, the first indication field being used for indicating the first port number.

43. The method of any one of claims 37 to 42, wherein, 44. The method of claim 43, wherein A bit number of the first indication field is determined based on a second port number, the second port number being a maximum number of ports corresponding to one or more reference signal resources in a first reference signal resource group, the first reference signal resource group comprising the first reference signal resource; or The bit number of the first indication field is configured by the second device.

45. The method of claim 43 or 44, wherein In a case where a value of the first indication field is a first value, the first indication field is used for indicating the first port number; and / or In a case where the value of the first indication field is a second value, the first indication field is used for indicating information other than the first port number. The first indication field is used for indicating a first information combination, the first information combination comprising at least the first port number.

46. The method of claim 43 or 44, wherein, The first information is physical layer information, and the first information is one of the following information:

47. The method of any one of claims 37 to 46, wherein, Downlink control information (DCI) used for scheduling downlink data; DCI used for scheduling uplink data; Sidelink control information (SCI) used for scheduling sidelink data; DCI used for non-scheduled data transmission; SCI used for non-scheduled data transmission. The first information is physical layer information for a plurality of terminal devices, the plurality of terminal devices comprising the first device.

48. The method of claim 47, wherein, A number of ports corresponding to the first reference signal resource is N, N being a positive integer, 49. The method of any one of claims 34 to 48, wherein, In a case where the N is less than or equal to the first port number, the first device performs channel measurement and / or reports a reference signal measurement report based on the N ports; and / or In a case where the N is greater than the first port number, the first device performs channel measurement and / or reports a reference signal measurement report based on a first group of ports, a number of ports comprised by the first group of ports being less than or equal to the first port number.

50. The method of claim 49, wherein ​ The first group of ports is M ports with the smallest indexes among the ports corresponding to the first reference signal resource. Or, The first group of ports is M ports with the largest indexes among the ports corresponding to the first reference signal resource. Or, The first group of ports is determined based on a first rule, and the first rule is configured by the second device. The first group of ports is indicated by the second device. M is a first port number, and M is a positive integer.

51. The method of any one of claims 34 to 50, wherein The first port number is applied to all cells configured or activated by the first device; or The first port number is applied to an indicated BWP in all cells configured or activated by the first device; or The first port number is applied to all BWPs in all cells configured or activated by the first device.

52. The method of any one of claims 34 to 51, wherein The first port number is applied to one or more first cells; or The first port number is applied to an indicated BWP in the one or more first cells; or The first port number is applied to all BWPs in the one or more first cells.

53. The method of claim 52, wherein The one or more first cells are indicated by the first information; or The one or more first cells are cells corresponding to data transmission scheduled by the first information; or The one or more first cells are cells where the first information is transmitted. The first port number is applied to a third cell, and the first indication information corresponds to the third cell.

54. The method of any one of claims 34 to 50, wherein, 55. The method of claim 54, wherein The third cell is indicated by the first information; or The third cell is a cell corresponding to data transmission scheduled by the first information; or The third cell is a cell where the first information is transmitted.

56. The method of claim 54 or 55, wherein The first port number is applied to an activated BWP in the third cell; or The first port number is applied to all BWPs in the third cell.

57. The method of any one of claims 34 to 50, wherein The first port number is applied to all cells in a first cell group; or The first port number is applied to an indicated BWP in all cells in the first cell group; or The first port number is applied to all BWPs in all cells in the first cell group.

58. The method of claim 57, wherein The first cell group is indicated by the second device; or The first cell group includes all cells on a frequency band where a third cell is located, and the first indication information corresponds to the third cell. The method further comprises:

59. The method of claim 58, wherein, ​ sending second indication information to the first device, wherein the second indication information is used to indicate one or more cell groups, the one or more cell groups containing the first cell group, or the third cell belongs to the first cell group, or the second indication information is used to indicate one or more second frequency bands, and the first cell group contains all cells on the one or more second frequency bands.

60. The method of any one of claims 51 to 59, wherein, The second port number is determined according to the port number corresponding to the reference signal resource with the most corresponding ports among all reference signal resources on all cells configured or activated by the first device; or, The second port number is determined according to the port number corresponding to the reference signal resource with the most corresponding ports among all reference signal resources on one or more first cells, and the first information is applied to the one or more first cells; or, The second port number is determined according to the port number corresponding to the reference signal resource with the most corresponding ports among all reference signal resources on the activated BWP of the third cell, and the first indication information corresponds to the third cell; or, The second port number is determined according to the port number corresponding to the reference signal resource with the most corresponding ports among all reference signal resources on the third cell, and the first indication information corresponds to the third cell; or, The second port number is determined according to the port number corresponding to the reference signal resource with the most corresponding ports among all reference signal resources on all cells in the first cell group.

61. The method of any one of claims 34 to 60, wherein, The method further comprises: receiving first reporting information sent by the first device, wherein the first reporting information is used to indicate a fourth port number, and the fourth port number is a value of the first port number recommended by the first device.

62. The method of claim 61, wherein, The first reporting information is used to indicate the first port number recommended by the first device for all reference signal resources on all cells configured or activated by the first device; or, The first reporting information is used to indicate the first port number recommended by the first device for all reference signal resources on the activated BWP of all cells configured or activated by the first device; Or, The first reporting information is used to indicate the first port number recommended by the first device for all reference signal resources on one or more fourth cells; Or, The first reporting information is used to indicate the first port number recommended by the first device for all reference signal resources on one or more third frequency bands.

63. The method of any one of claims 34-62, wherein, The method further comprises: receiving first capability information sent by the first device, wherein the first capability information contains one or more of the following: a first capability, which is used to indicate that the first device supports upper layer information carrying the first indication information; a second capability, which is used to indicate that the first device supports physical layer information carrying the first indication information; a third capability, which is used to determine a first application time of the first indication information carried by the upper layer information; A fourth capability for determining a first application time of the first indication information carried by the physical layer information.

64. The method of claim 63, wherein, the first capability information is reported independently for each frequency band; or the first capability information is reported independently for each frequency band combination; or the first capability information is reported independently for each frequency band in each frequency band combination; or the first capability information is reported independently for each carrier on each frequency band in each frequency band combination; or the first capability information is reported independently for each frequency band range; or the first capability information is reported independently for each first device.

65. The method of claim 63 or 64, wherein, the first capability information is terminal capability information; or 66. The method of any one of claims 34 to 65, wherein, the first capability information is upper layer signaling.

67. A port indicating device, comprising: the second device is a terminal device; or the second device is a network device.

68. A port indicating device, comprising: The apparatus comprises: a receiving module configured to receive first indication information sent by a second device, the first indication information being used to indicate a first port number, a port number at which the first device measures a first reference signal resource being less than or equal to the first port number.

69. A communications device, characterized by The apparatus comprises:

70. A computer-readable storage medium, comprising: a sending module configured to send first indication information to a first device, the first indication information being used to indicate a first port number, a port number at which the first device measures a first reference signal resource being less than or equal to the first port number.

71. A chip, comprising: The communication device comprises a processor and a memory, the memory storing a computer program, and the processor executes the computer program to implement the method of any one of claims 1 to 33 or the method of any one of claims 34 to 66.

72. A computer program product, characterized in that, The storage medium stores a computer program, and the computer program is used to be executed by a processor to implement the method of any one of claims 1 to 33 or the method of any one of claims 34 to 66. The chip comprises a programmable logic circuit and / or program instructions, and when the chip is running, the programmable logic circuit and / or program instructions are used to implement the method of any one of claims 1 to 33 or the method of any one of claims 34 to 66. The computer program product comprises computer instructions stored in a computer readable storage medium, and a processor reads and executes the computer instructions from the computer readable storage medium to implement the method of any one of claims 1 to 33 or the method of any one of claims 34 to 66.

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