Communication method and device

Abstract

The embodiment of the present application provides a communication method and device, which relates to the field of wireless communication, and can improve the communication performance between the terminal and the network device when the terminal and the network device communicate. The method includes: the terminal measures one or more channel state information reference signals in an inactive state of radio resource control, and performs uplink communication or downlink communication with the network device according to the measurement results of the one or more channel state information reference signals.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of wireless communications, and in particular, to a communication method and device. Background Art

[0002] In a system (e.g., a new radio (NR) system), the terminal can be in a radio resource control connected (RRC-connected) state, a radio resource control idle (RRC-idle) state, or a radio resource control inactive (RRC-inactive) state.

[0003] When the terminal is in the RRC-connected state, the terminal is connected to a network device (such as an access network device), the network device knows that the terminal is within the coverage of the network device, and the core network device knows that the terminal can be found through the network device. The terminal can receive downlink data from the network device and can also send uplink data to the network device. When the terminal is in the RRC-idle state, the terminal is not connected to a network device (such as an access network device), the network device does not know whether the terminal is within the coverage of the network device, and the core network device does not know which network device can be used to find the terminal. The terminal can receive one or more of a paging message, a synchronization signal, a broadcast message, or system information from the network device, but the terminal cannot perform unicast data transmission with the network device. When the terminal is in the RRC-inactive state, the terminal is not connected to a network device (such as an access network device), the network device does not know whether the terminal is within the coverage of the network device, and the core network device knows that the terminal can be found through the network device. The terminal can receive one or more of a paging message, a synchronization signal, a broadcast message, or system information from the network device.

[0004] With the development of wireless communication technology, in addition to receiving one or more of paging messages, synchronization signals, broadcast messages, or system information from a network device, a terminal in an RRC-idle state and / or a terminal in an RRC-inactive state may also perform unicast data transmission with a network device. Since the terminal in an RRC-idle state and / or a terminal in an RRC-inactive state is not connected to the network device, at this time, if the terminal in an RRC-idle state and / or a terminal in an RRC-inactive state performs unicast data transmission with the network device, the communication performance between the terminal and the network device cannot be guaranteed. Summary of the invention

[0005] The embodiments of the present application provide a communication method and apparatus, which can improve the communication performance between a terminal and a network device when the terminal and the network device communicate.

[0006] In order to achieve the above purpose, the embodiment of the present application adopts the following technical solution:

[0007] In a first aspect, an embodiment of the present application provides a communication method, which can be executed by a terminal or by a component of the terminal, such as a processor, a chip, or a chip system inside the terminal. The method includes: in an RRC-inactive state, measuring one or more channel state information reference signals (CSI-RS), and performing uplink or downlink communication with a network device based on the measurement results of the one or more CSI-RS.

[0008] The method provided in the first aspect above can measure one or more CSI-RS when the terminal is in the RRC-inactive state, and perform uplink or downlink communication with the network device based on the measurement results of the one or more CSI-RS. Since the measurement results of the CSI-RS can characterize the channel quality of the transmission resources corresponding to the CSI-RS between the terminal and the network device, the terminal can select a transmission resource with better channel quality based on the measurement results of the CSI-RS, and perform uplink or downlink communication with the network device on the transmission resource, thereby improving the communication performance between the terminal and the network device when the terminal is in the RRC-inactive state. At the same time, the method described in the first aspect can determine a transmission resource with better channel quality for the terminal. Subsequently, when the terminal switches to an RRC-idle state, an RRC-connected state or other state, the terminal can also communicate uplink or downlink with the network device through the transmission resource, thereby improving the communication performance between the terminal and the network device when the terminal is in an RRC-idle state, an RRC-connected state or other state, and can also reduce the measurement overhead caused by determining a transmission resource with better channel quality when the terminal is in an RRC-idle state, an RRC-connected state or other state.

[0009] In combination with the first aspect, in a possible implementation, the uplink communication includes one or more of the following: uplink data transmission, uplink control information transmission, preamble code transmission, or uplink sounding reference signal transmission. Based on this possible implementation, the terminal can perform multiple uplink communications such as uplink data transmission, uplink control information transmission, preamble code transmission, or uplink sounding reference signal transmission with the network device according to the measurement results of one or more CSI-RSs, while improving the communication performance of the uplink communication between the terminal and the network device, and can also improve the flexibility and diversity of the uplink communication between the terminal and the network device.

[0010] In combination with the first aspect or any possible implementation of the first aspect, in a possible implementation, the downlink communication includes downlink data reception and / or downlink control information reception. Based on this possible implementation, the terminal can perform multiple downlink communications such as downlink data reception and / or downlink control information reception with the network device according to the measurement results of one or more CSI-RSs, thereby improving the communication performance of the downlink communication between the terminal and the network device, and also improving the flexibility and diversity of the downlink communication between the terminal and the network device.

[0011] In combination with the first aspect or any possible implementation of the first aspect, in a possible implementation, the uplink communication or downlink communication with the network device according to the measurement results of the one or more CSI-RS includes: obtaining a first resource including a first uplink resource or a first downlink resource according to the measurement results of the one or more CSI-RS; and using the first resource to perform uplink communication or downlink communication with the network device. Based on this possible implementation, the first resource can be obtained according to the measurement results of one or more CSI-RS, and the first uplink resource can be used to perform uplink communication with the network device, or the first downlink resource can be used to perform downlink communication with the network device. Because the measurement results of the CSI-RS can reflect the channel quality of the corresponding resources, when the terminal and the network device communicate, the communication performance between the terminal and the network device can be improved by using the first resource.

[0012] In combination with the first aspect or any possible implementation of the first aspect, in a possible implementation, the first resource includes one or more of a time domain resource, a frequency domain resource, a spatial domain resource, or a code domain resource. Based on this possible implementation, multiple resources such as time domain resources, frequency domain resources, spatial domain resources, or code domain resources can be determined according to the measurement result of the CSI-RS, and one or more of the time domain resources, frequency domain resources, spatial domain resources, or code domain resources can be used to perform uplink or downlink communication with the network device, so that the diversity of resources used for uplink or downlink communication between the terminal and the network device can be improved, and the flexibility of uplink or downlink communication between the terminal and the network device can be improved.

[0013] In combination with the first aspect or any possible implementation of the first aspect, in a possible implementation, the method further includes: sending information related to the first resource and used to indicate the first resource to the network device. Based on this possible implementation, the terminal can send information related to the first resource and used to indicate the first resource to the network device, and indicate the first resource determined by the terminal according to the measurement result of the CSI-RS to the network device, so that the network device uses the first resource to communicate with the terminal according to the instruction of the terminal, thereby improving the communication performance between the terminal and the network device.

[0014] In combination with the first aspect or any possible implementation of the first aspect, in a possible implementation, the use of the first resource to perform uplink or downlink communication with the network device includes: using the first resource to perform uplink or downlink communication with the network device under a first condition, wherein the first condition includes one or more of the following: within the effective duration, before receiving update information from the network device for indicating the update of the configuration of the one or more CSI-RS, before receiving a measurement indication from the network device for indicating the measurement of the one or more CSI-RS, or before measuring a resource different from the first resource. Based on this possible implementation, the terminal can use the first resource to perform uplink or downlink communication with the network device within a certain time, before obtaining a new CSI-RS configuration, before receiving a measurement indication from the network device, or before measuring a resource different from the first resource. In this way, the terminal can use the same resource to communicate with the network device within a certain time period, without frequently measuring one or more CSI-RS to update the resources used for communication, thereby reducing the measurement overhead of the terminal and the frequency of resource updates.

[0015] In combination with the first aspect or any possible implementation of the first aspect, in a possible implementation, the method further includes: receiving configuration information for configuring the one or more CSI-RS from the network device. Based on this possible implementation, the network device can configure the CSI-RS to the terminal. Since the network device has a centralized management function for the communication status of the terminal, the result obtained by the terminal through measurement based on the CSI-RS configured by the network device can more accurately reflect the channel quality, thereby improving the communication performance between the terminal and the network device.

[0016] In combination with the first aspect or any possible implementation manner of the first aspect, in a possible implementation manner, the configuration information is included in one or more of RRC dedicated information, random access response, paging message, or system information. Based on this possible implementation manner, the terminal can receive the configuration information from the network device through multiple types of information, which increases the diversity and flexibility of the terminal in obtaining the configuration information.

[0017] In combination with the first aspect or any possible implementation of the first aspect, in a possible implementation, the uplink communication or downlink communication with the network device includes: performing the uplink communication or the downlink communication with the network device in the RRC-inactive state, the RRC-idle state, or the RRC-connected state. Based on this possible implementation, the terminal can perform uplink communication or downlink communication with the network device in the RRC-inactive state, the RRC-idle state, or the RRC-connected state according to the measurement results of one or more CSI-RS in the RRC-inactive state. Since the measurement results of the CSI-RS can characterize the channel quality of the transmission resources corresponding to the CSI-RS between the terminal and the network device, the terminal can select a transmission resource with better channel quality according to the measurement results of the CSI-RS, and perform uplink or downlink communication with the network device on the transmission resource, thereby improving the communication performance between the terminal and the network device when the terminal is in the RRC-inactive state. At the same time, the method described in the first aspect can determine a transmission resource with better channel quality for the terminal. Subsequently, when the terminal switches to an RRC-idle state, an RRC-connected state or other state, the terminal can also communicate uplink or downlink with the network device through the transmission resource, thereby improving the communication performance between the terminal and the network device when the terminal is in an RRC-idle state, an RRC-connected state or other state, and can also reduce the measurement overhead caused by determining a transmission resource with better channel quality when the terminal is in an RRC-idle state, an RRC-connected state or other state.

[0018] In combination with the first aspect or any possible implementation of the first aspect, in a possible implementation, measuring one or more CSI-RS in the RRC-inactive state includes: measuring one or more of the reference signal received power, reference signal received quality, signal to interference plus noise ratio, or received signal strength indication of the one or more CSI-RS in the RRC-inactive state. Optionally, for any one of the one or more CSI-RS, one or more of the reference signal received power, reference signal received quality, signal to interference plus noise ratio, or received signal strength indication of the CSI-RS can be used as the first parameter. Based on this possible implementation, the terminal can measure one or more related parameters that can characterize the channel quality, such as the reference signal received power, reference signal received quality, signal to interference plus noise ratio, or received signal strength indication of the CSI-RS in the RRC-inactive state to obtain a measurement result, thereby improving the flexibility and diversity of CSI-RS measurement.

[0019] In combination with the first aspect or any possible implementation of the first aspect, in a possible implementation, obtaining a first resource according to the measurement result of the one or more CSI-RS includes: determining the resource corresponding to the CSI-RS with a higher first parameter among the one or more CSI-RS as the first resource. Based on this possible implementation, the resource corresponding to the CSI-RS with a higher first parameter among the one or more CSI-RS can be determined as the first resource. Since the measurement result of the CSI-RS can characterize the channel quality of the transmission resource corresponding to the CSI-RS between the terminal and the network device, the channel quality / communication quality of the first resource corresponding to the CSI-RS with a higher first parameter is better, so that the terminal uses the resource corresponding to the CSI-RS with a higher first parameter to communicate with the network device, which can better improve the communication performance between the terminal and the network device.

[0020] In a second aspect, an embodiment of the present application provides a communication method, which can be executed by a network device or by a component of the network device (such as a processor, a chip, or a chip system, etc.). The method includes: sending one or more CSI-RS for measurement in an RRC-inactive state to a terminal; performing uplink communication or downlink communication with the terminal, the uplink communication or the downlink communication corresponding to at least one CSI-RS of the one or more CSI-RS.

[0021] In the method provided in the second aspect above, the network device can send one or more CSI-RS to the terminal so that the terminal can measure the one or more CSI-RS in the RRC-inactive state, and perform uplink or downlink communication with the network device based on the measurement results. Since the CSI-RS can characterize the channel quality of the transmission resource corresponding to the CSI-RS between the terminal and the network device, after the network device sends the CSI-RS to the terminal, it can perform uplink or downlink communication with the terminal on the transmission resource corresponding to a certain CSI-RS (such as: the transmission resource corresponding to the CSI-RS with better channel quality), thereby improving the communication performance between the network device and the terminal.

[0022] In conjunction with the second aspect, in a possible implementation, the uplink communication includes one or more of the following: uplink data reception, uplink control information reception, preamble code detection, or uplink sounding reference signal reception. Based on this possible implementation, the network device and the terminal perform uplink communications such as uplink data reception, uplink control information reception, preamble code detection, or uplink sounding reference signal reception corresponding to the CSI-RS, which improves the communication performance of the uplink communication between the network device and the terminal, and also improves the flexibility and diversity of the uplink communication between the network device and the terminal.

[0023] In combination with the second aspect or any possible implementation of the second aspect, in a possible implementation, the downlink communication includes downlink data transmission and / or downlink control information transmission. Based on this possible implementation, the network device can perform downlink communication such as downlink data transmission corresponding to the CSI-RS and / or downlink control information transmission with the terminal, while improving the communication performance of the downlink communication between the network device and the terminal, and can also improve the flexibility and diversity of the downlink communication between the network device and the terminal.

[0024] In combination with the second aspect or any possible implementation of the second aspect, in a possible implementation, the uplink communication or downlink communication with the terminal, the uplink communication or the downlink communication corresponds to at least one CSI-RS among the one or more CSI-RSs, includes: using a first resource corresponding to the at least one CSI-RS among the one or more CSI-RSs to perform uplink communication or downlink communication with the terminal, wherein the first resource includes a first uplink resource or a first downlink resource. Based on this possible implementation, the network device can perform uplink communication with the terminal on the first uplink resource corresponding to at least one CSI-RS, or the network device can perform downlink communication with the terminal on the first downlink resource corresponding to at least one CSI-RS, because the measurement result of the CSI-RS can characterize the channel quality of the transmission resource corresponding to the CSI-RS between the terminal and the network device, so when the network device communicates with the terminal, the communication performance between the network device and the terminal is improved by using the first resource corresponding to the CSI-RS with better channel quality.

[0025] In combination with the second aspect or any possible implementation of the second aspect, in a possible implementation, the first resource includes one or more of a time domain resource, a frequency domain resource, a space domain resource, or a code domain resource. Based on this possible implementation, the network device can use multiple resources such as time domain resources, frequency domain resources, space domain resources, or code domain resources to communicate uplink or downlink with the network device, thereby improving the diversity of resources used for uplink or downlink communication between the network device and the terminal, and improving the flexibility of uplink or downlink communication between the network device and the terminal.

[0026] In combination with the second aspect or any possible implementation of the second aspect, in a possible implementation, the method further includes: receiving information related to the first resource from the terminal and used to indicate the first resource. Based on this possible implementation, the network device can receive information related to the first resource from the terminal, so that the first resource can be determined according to the information related to the first resource, so as to use the first resource in subsequent uplink communication or downlink communication with the terminal, thereby improving communication performance with the terminal.

[0027] In combination with the second aspect or any possible implementation of the second aspect, in a possible implementation, the use of the first resource to perform uplink or downlink communication with the terminal includes: using the first resource to perform uplink or downlink communication with the terminal under a first condition, wherein the first condition includes one or more of the following: within the effective duration, before sending update information to the terminal for indicating the update of the configuration of the one or more CSI-RS, before sending a measurement indication to the terminal for indicating the measurement of the one or more CSI-RS, or before obtaining a resource different from the first resource. Based on this possible implementation, the network device can use the first resource to perform uplink or downlink communication with the terminal within a certain time, before sending a new CSI-RS configuration to the terminal, before sending a measurement indication to the terminal, or before obtaining a resource different from the first resource. In this way, the network device can use the same resource to communicate with the terminal within a fixed time period, without the need to update the resources used for communication, thereby reducing the frequency of resource updates.

[0028] In combination with the second aspect or any possible implementation of the second aspect, in a possible implementation, the method further includes: sending configuration information for configuring the one or more CSI-RS to the terminal. Based on this possible implementation, the network device can send the configuration information to the terminal. Since the network device has a centralized management function for the communication status of the terminal, the CSI-RS configured by the network device can make the result obtained by the terminal measuring the CSI-RS more accurately reflect the channel quality, thereby improving the communication performance between the terminal and the network device.

[0029] In conjunction with the second aspect or any possible implementation of the second aspect, in a possible implementation, the configuration information is included in one or more of RRC dedicated information, random access response, paging message, or system information. Based on this possible implementation, the network device can send the configuration information to the terminal through multiple types of information, which increases the diversity and flexibility of the network device in sending the configuration information.

[0030] In a third aspect, an embodiment of the present application provides a communication device that can implement the method in the first aspect or any possible implementation of the first aspect. The device includes corresponding units or components for executing the above method. The units included in the device can be implemented by software and / or hardware. The device can be, for example, a terminal, or a chip, a chip system, or a processor that can support the terminal to implement the above method.

[0031] In a fourth aspect, an embodiment of the present application provides a communication device that can implement the method in the second aspect or any possible implementation of the second aspect. The device includes corresponding units or components for executing the above method. The units included in the device can be implemented by software and / or hardware. The device can be, for example, a network device, or a chip, a chip system, or a processor that can support the network device to implement the above method.

[0032] In a fifth aspect, an embodiment of the present application provides a communication device, comprising: a processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the device implements the method described in the above-mentioned first aspect, or any possible implementation of the first aspect.

[0033] In a sixth aspect, an embodiment of the present application provides a communication device, comprising: a processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the device implements the method described in the above-mentioned second aspect, or any possible implementation of the second aspect.

[0034] In a seventh aspect, an embodiment of the present application provides a communication device, which is used to implement the method described in the above-mentioned first aspect or any possible implementation manner of the first aspect.

[0035] In an eighth aspect, an embodiment of the present application provides a communication device, which is used to implement the method described in the above-mentioned second aspect or any possible implementation manner of the second aspect.

[0036] In a ninth aspect, an embodiment of the present application provides a computer-readable medium having a computer program or instructions stored thereon, which, when executed, enables a computer to execute the method described in the first aspect or any possible implementation of the first aspect.

[0037] In the tenth aspect, an embodiment of the present application provides a computer-readable medium having a computer program or instructions stored thereon, which, when executed, enables the computer to execute the method described in the above-mentioned second aspect, or any possible implementation of the second aspect.

[0038] In an eleventh aspect, an embodiment of the present application provides a computer program product, which includes a computer program code. When the computer program code is run on a computer, the computer executes the method described in the above-mentioned first aspect or any possible implementation manner of the first aspect.

[0039] In a twelfth aspect, an embodiment of the present application provides a computer program product, which includes a computer program code. When the computer program code is run on a computer, it enables the computer to execute the method described in the above-mentioned second aspect or any possible implementation manner of the second aspect.

[0040] In the thirteenth aspect, an embodiment of the present application provides a chip, comprising: a processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the chip implements the method described in the above-mentioned first aspect, or any possible implementation of the first aspect.

[0041] In the fourteenth aspect, an embodiment of the present application provides a chip, comprising: a processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the chip implements the method described in the above-mentioned second aspect, or any possible implementation of the second aspect.

[0042] In the fifteenth aspect, an embodiment of the present application provides a communication system. The system includes the device described in the third aspect above and / or the device described in the fourth aspect above, or the system includes the device described in the fifth aspect above and / or the device described in the sixth aspect above, or the system includes the device described in the seventh aspect above and / or the device described in the eighth aspect above. It can be understood that any of the above-mentioned communication devices, chips, computer-readable media, computer program products or communication systems are used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram of the communication system architecture provided in an embodiment of the present application;

[0044] Figure 2-Figure 9 A flow chart of a communication method provided in an embodiment of the present application;

[0045] Fig.10 A schematic diagram of the structure of a device provided in an embodiment of the present application;

[0046] Fig.11 A schematic diagram of the structure of a terminal provided in an embodiment of the present application;

[0047] Fig.12 A schematic diagram of the structure of another device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] The implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0049] The method provided in the embodiment of the present application can be used in various communication systems. For example, the communication system can be a long term evolution (LTE) system, a fifth generation (5G) communication system, an NR system, a wireless fidelity (WiFi) system, a communication system related to the third generation partnership project (3GPP), and a communication system that will evolve in the future, etc., without limitation. Figure 1 Taking the communication system 10 as an example, the method provided in the embodiment of the present application is described.

[0050] like Figure 1 , which is a schematic diagram of the architecture of a communication system 10 provided in an embodiment of the present application. Figure 1 In the embodiment, the communication system 10 may include one or more network devices 101 (only one is shown) and one or more terminals 102 that can communicate with the network device 101. Figure 1 It is only a schematic diagram and does not constitute a limitation on the applicable scenarios of the technical solution provided in this application.

[0051] The network device 101 can be any device with wireless transceiver function. Including but not limited to: evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in LTE, base station (gNodeB or gNB) or transceiver point (transmission receiving point / transmission reception point, TRP) in NR, base station of subsequent evolution of 3GPP, access node in WiFi system, wireless relay node, wireless backhaul node, etc. The base station can be: macro base station, micro base station, micro-micro base station, small station, relay station, or balloon station, etc. Multiple base stations can support the network of the same technology mentioned above, or they can support the network of different technologies mentioned above. The base station can include one or more co-station or non-co-station TRPs. The network device can also be a wireless controller, a centralized unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario. The network device can also be a server, a wearable device, a machine communication device, or a vehicle-mounted device, etc. The following is an example of a network device as a base station. The multiple network devices may be base stations of the same type or different types. The base station may communicate with the terminal or communicate with the terminal through a relay station. The terminal may communicate with multiple base stations of different technologies. For example, the terminal may communicate with a base station supporting an LTE network or a base station supporting a 5G network, and may also support dual connection with a base station of an LTE network and a base station of a 5G network.

[0052] The terminal 102 is a device with wireless transceiver function, which can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons and satellites, etc.). The terminal can be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a terminal in industrial control, a vehicle-mounted terminal device, a terminal in self-driving, a terminal in assisted driving, a terminal in remote medical, a terminal in smart grid, a terminal in transportation safety, a terminal in smart city, a terminal in smart home, etc. The embodiments of the present application do not limit the application scenarios. A terminal may also be sometimes referred to as terminal equipment, user equipment (UE), access terminal equipment, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal equipment, mobile equipment, UE terminal equipment, wireless communication equipment, machine terminal, UE agent or UE device, etc. A terminal may be fixed or mobile.

[0053] As an example but not limitation, in the present application, the terminal may be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and independent of smartphones to achieve complete or partial functions, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0054] In the present application, the terminal may be a terminal in the Internet of Things (IoT) system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing human-machine interconnection and intelligent network of things-to-things interconnection. The terminal in the present application may be a terminal in machine type communication (MTC). The terminal of the present application may be a vehicle-mounted module, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit built into a vehicle as one or more components or units. The vehicle may implement the method of the present application through the built-in vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit. Therefore, the embodiments of the present application may be applied to vehicle networking, such as vehicle to everything (V2X), long term evolution vehicle (LTE-V), vehicle to vehicle (V2V), etc.

[0055] Figure 1 The communication system 10 shown is only used as an example and is not used to limit the technical solution of the present application. Those skilled in the art should understand that in the specific implementation process, the communication system 10 may also include other devices, and the number of network devices and terminals may also be determined according to specific needs without limitation.

[0056] exist Figure 1 In the communication system 10 shown, the terminal 102 may be in an RRC-connected state, an RRC-idle state, or an RRC-inactive state. The RRC-connected state may be replaced by an RRC-connected state, an RRC connected state, a first state, a first state, or other names that can indicate that the terminal is in an RRC-connected state. The RRC-idle state may be replaced by an RRC-idle state, an RRC idle state, a second state, a second state, or other names that can indicate that the terminal is in an RRC-idle state. The RRC-inactive state may be replaced by an RRC-inactive state, an RRC inactive state, a third state, a third state, or other names that can indicate that the terminal is in an RRC-inactive state, without limitation.

[0057] The terminal 102 can switch between the RRC-connected state, the RRC-idle state, and the RRC-inactive state. For example, the terminal 102 can switch from the RRC-connected state to the RRC-idle state or the RRC-inactive state; the terminal 102 can also switch from the RRC-idle state to the RRC-connected state; the terminal 102 can also switch from the RRC-inactive state to the RRC-connected state or the RRC-idle state. The specific process of the terminal 102 switching between the RRC-connected state, the RRC-idle state, and the RRC-inactive state can be as follows:

[0058] When the terminal 102 is in the RRC-connected state, the network device 101 can convert the state of the terminal 102 from the RRC-connected state to the RRC-idle state or the RRC-inactive state through a radio resource control (RRC) release process. For example, the network device 101 sends an RRC release (RRC release) message to the terminal 102 for instructing the terminal 102 to release the RRC connection between the terminal 102 and the network device 101. After receiving the RRC release message, the terminal 102 releases the RRC connection between it and the network device 101 and converts to the RRC-idle state or the RRC-inactive state.

[0059] When the terminal 102 is in the RRC-idle state, the terminal 102 can convert the state of the terminal 102 from the RRC-idle state to the RRC-connected state through the RRC establishment process. Exemplarily, when the terminal 102 is in the RRC-idle state, after the terminal 102 receives a paging message from the network device 101, the terminal 102 initiates the RRC establishment process to the network device 101, or the RRC establishment process is triggered by the upper layer of the terminal 102, and the terminal 102 attempts to establish an RRC connection with the network device 101 to enter the RRC-connected state. Exemplarily, the RRC establishment process between the terminal 102 and the network device 101 includes: the terminal 102 sends an RRC setup request message to the network device 101; the network device 101 receives the RRC establishment request message from the terminal 102, and sends an RRC setup message to the terminal 102, so that after the terminal 102 receives the RRC establishment message, it converts its own state to the RRC-connected state; or, the network device 101 sends an RRC reject message to the terminal 102, so that after the terminal 102 receives the RRC reject message, it continues to stay in the RRC-idle state.

[0060] When the terminal 102 is in the RRC-inactive state, the terminal 102 can convert the state of the terminal 102 from the RRC-inactive state to the RRC-connected state through the RRC establishment or RRC resume process. Exemplarily, when the terminal 102 is in the RRC-inactive state, the terminal 102 initiates the RRC recovery process after receiving a paging message from the network device 101, or the RRC recovery process is triggered by the higher layer of the terminal 102, and the terminal 102 attempts to restore the RRC connection with the network device 101 to enter the RRC-connected state. Exemplarily, the RRC recovery process between the terminal 102 and the network device 101 includes: the terminal 102 sends an RRC resume request message to the network device 101; the network device 101 receives the RRC recovery request message from the terminal 102 and sends an RRC setup message or an RRC resume message to the terminal 102, so that the state of the terminal 102 can be converted to the RRC-connected state; or, the network device 101 sends an RRC reject message to the terminal 102, so that the terminal 102 continues to stay in the RRC-inactive state after receiving the RRC reject message. In addition, when the terminal 102 is in the RRC-inactive state, the network device 101 can convert the state of the terminal 102 from the RRC-inactive state to the RRC-idle state through the RRC release process. For example, the network device 101 sends an RRC release message to the terminal 102, so that after receiving the RRC release message, the terminal 102 changes from the RRC-inactive state to the RRC-idle state.

[0061] Among them, when the terminal 102 is in the RRC-connected state, the network device 101 knows that the terminal 102 is within the coverage or management scope of the network device 101. The network device 101 and the terminal 102 can transmit data channels and / or control channels. For example, the network device 101 can send a physical downlink control channel (physical downlink control channel, PDCCH) specific to the terminal 102 and / or a physical downlink shared channel (physical downlink shared channel, PDSCH) specific to the terminal 102, and the terminal 102 can also send a physical uplink shared channel (physical uplink shared channel, PUSCH) specific to the terminal 102 and / or a physical uplink control channel (physical uplink control channel, PUCCH) specific to the terminal 102 to the network device 101. Core network device ( Figure 1 (not shown) knows that the terminal 102 is within the coverage or management range of the network device 101, and the core network device also knows that the terminal 102 can be located or found through the network device 101.

[0062] When the terminal 102 is in the RRC-idle state, the network device 101 does not know whether the terminal 102 is within the coverage range of the network device 101 or within the management range of the network device 101. The terminal 102 can receive one or more of the paging message, synchronization signal, broadcast message, or system information from the network device 101, but the terminal 102 cannot perform unicast data transmission with the network device 101. For example, the terminal 102 cannot receive the terminal 102-specific PDSCH and PDCCH from the network device 101, and the terminal 102 cannot send the terminal 102-specific PUSCH and PUCCH to the network device 101. The core network device does not know which network device the terminal 102 is within the coverage range or management range, and the core network device does not know which network device the terminal 102 can be located or found through.

[0063] When the terminal 102 is in the RRC-inactive state, the network device 101 does not know whether the terminal 102 is within the coverage of the network device 101 or within the management scope of the network device 101. The terminal 102 can receive one or more of a paging message, a synchronization signal, a broadcast message, or system information from the network device 101. The core network device knows that the terminal 102 is within the coverage or management scope of the network device 101, and the core network device also knows that the terminal 102 can be located or found through the network device 101.

[0064] In summary, when the terminal 102 is in the RRC-idle state or the RRC-inactive state, it can receive one or more of a paging message, a synchronization signal, a broadcast message, or system information from the network device 101, but the terminal 102 cannot perform unicast data transmission with the network device 101. With the development of wireless communication technology, when the terminal 102 is in the RRC-idle state or the RRC-inactive state, in addition to being able to receive one or more of a paging message, a synchronization signal, a broadcast message, and system information from the network device 101, it is also possible to perform unicast data transmission with the network device 101.

[0065] For example, the network device 101 can send one or more synchronization signal blocks (synchronization signal block, SSB) to the terminal 102; the terminal 102 in the RRC-idle state or the RRC-inactive state can measure the one or more SSBs, obtain a second resource based on the measurement results of the one or more SSBs, and receive a paging message, system information block (system information block, SIB) from the network device 101 through the second resource, or perform uplink random access.

[0066] However, the measurement results of SSB cannot reflect the accurate channel quality corresponding to unicast data transmission between the terminal and the network device. When a terminal in the RRC-idle state and / or a terminal in the RRC-inactive state uses the second resource to perform unicast data transmission with the network device, the communication performance between the terminal and the network device may be reduced.

[0067] In order to solve the above problems, the present application provides a communication method. The specific process of the communication method can refer to the following Figure 2-Figure 9 Through this method, the terminal can measure one or more CSI-RS in the RRC-inactive state, and based on the measurement results of the one or more CSI-RS, perform uplink communication or downlink communication corresponding to at least one of the one or more CSI-RS with the network device to improve the communication performance between the terminal and the network device.

[0068] Optional, Figure 1Each network element (such as network device 101 or terminal 102, etc.) in the embodiment of the present application can be implemented by one device, or by multiple devices, or by a functional module in one device, which is not specifically limited in the present application embodiment. It is understandable that the above functions can be network elements in hardware devices, software functions running on hardware, or virtualized functions instantiated on a platform (such as a cloud platform).

[0069] The communication method provided in the embodiment of the present application is described in detail below.

[0070] It can be understood that the name of the message (or information) or the name of the parameter in the message (or information) in the following embodiments of the present application is only an example, and other names may be used in the specific implementation. The embodiments of the present application do not specifically limit this.

[0071] It is to be understood that in the embodiments of the present application, the terminal or network device may perform some or all of the steps in the embodiments of the present application, and these steps are only examples, and the embodiments of the present application may also perform other steps or variations of various steps. In addition, the various steps may be performed in different orders presented in the embodiments of the present application, and it is possible that not all of the steps in the embodiments of the present application need to be performed.

[0072] The physical resources in this application may also be referred to as resources, or transmission resources, etc. The physical resources may include one or more of time domain resources, frequency domain resources, code domain resources, or spatial domain resources. For example, the time domain resources included in the physical resources may include at least one frame, at least one sub-frame, at least one slot, at least one mini-slot, at least one time unit, or at least one time domain symbol, etc. For example, the frequency domain resources included in the physical resources may include at least one carrier, at least one component carrier (CC), at least one bandwidth part (BWP), at least one resource block group (RBG), at least one physical resource block group (PRG), at least one resource block (RB), or at least one sub-carrier (SC), etc. For example, the spatial domain resources included in the physical resources may include at least one beam, at least one port, at least one antenna port, or at least one layer / spatial layer, etc. For example, the code domain resources included in the physical resources may include at least one orthogonal cover code (orthogonal cover code, OCC), or at least one non-orthogonal multiple access (non-orthogonal multiple access, NOMA) code, etc.

[0073] It is understandable that the above physical resources may be physical resources of a baseband, which may be used by a baseband chip, physical resources of an air interface, or physical resources of an intermediate frequency or a radio frequency.

[0074] like Figure 2 As shown, a communication method provided in an embodiment of the present application includes steps 201 to 203.

[0075] Step 201: A network device sends one or more CSI-RS to a terminal.

[0076] The network device may be Figure 1 The network device 101 in Figure 1 For example, the network device described in step 201 may be a processor in the network device 101, a chip in the network device 101, or a chip system in the network device 101, etc., without limitation.

[0077] The terminal may be Figure 1Any terminal 102 in the RRC-inactive state may also be a component in the terminal 102. For example, the terminal described in step 201 may be a processor in the terminal 102, a chip in the terminal 102, or a chip system in the terminal 102, etc., without limitation.

[0078] Among them, CSI-RS can correspond to physical resources. Exemplarily, one CSI-RS corresponds to one downlink resource, and the downlink resources corresponding to different CSI-RSs can be the same or different; or, one CSI-RS corresponds to one uplink resource, and the uplink resources corresponding to different CSI-RSs can be the same or different; or, one CSI-RS corresponds to one downlink resource and one uplink resource, and the downlink resources and uplink resources corresponding to different CSI-RSs can be the same or different. Among them, the correspondence between CSI-RS and physical resources can be predefined or configured by the network device for the terminal. CSI-RS can be used by the terminal to measure the channel quality of the physical resource corresponding to the CSI-RS.

[0079] Downlink resources can be used for downlink communication between a terminal and a network device, and uplink resources can be used for uplink communication between a terminal and a network device. There can be a corresponding relationship between downlink resources and uplink resources. In the embodiment of the present application, the corresponding relationship between uplink resources and downlink resources can be predefined or configured by the network device for the terminal.

[0080] In an embodiment of the present application, one or more downlink resources and / or uplink resources corresponding to one or more CSI-RS may be included in a resource pool, which may be predefined or configured by a network device for a terminal. When the resource pool includes one or more uplink resources, or when the one or more CSI-RS correspond to one or more uplink resources, the resource pool may be a configured grant (CG), or it may be understood that the resources contained in the resource pool may be used for uplink grant free (GF) transmission.

[0081] Optionally, when the terminal is in the RRC-inactive state, the network device sends one or more CSI-RS to the terminal.

[0082] Optionally, the network device sends one or more CSI-RSs to the terminal in any of the following three ways:

[0083] In method 1, the network device periodically sends one or more CSI-RS to the terminal.

[0084] The network device periodically sending one or more CSI-RS to the terminal may refer to the network device sending one or more CSI-RS to the terminal at intervals of a certain time period / periodically / regularly. The period for the network device to send one or more CSI-RS to the terminal may be predefined or configured by the network device for the terminal. For example, the period may be 2 milliseconds, and the network device sends one or more CSI-RS to the terminal every 2 milliseconds.

[0085] In the second method, the network device sends one or more CSI-RS to the terminal non-periodically.

[0086] The network device sending one or more CSI-RSs to the terminal aperiodically may refer to the network device sending one or more CSI-RSs to the terminal aperiodically, or the network device sending one or more CSI-RSs to the terminal when a certain trigger condition is met.

[0087] Among them, the trigger condition can be used to trigger the network device to send one or more CSI-RS to the terminal. The trigger condition can be after the network device sends a paging message, or after the network device sends downlink data to the terminal for the first time or each time, etc., without limitation. For example, after the network device sends a paging message or downlink data to the terminal, it sends one or more CSI-RS to the terminal.

[0088] Mode three: the network device semi-continuously sends one or more CSI-RS to the terminal.

[0089] The network device semi-continuously sending one or more CSI-RSs to the terminal may refer to the network device periodically sending one or more CSI-RSs to the terminal after a trigger condition is met.

[0090] Among them, the triggering condition is as described in the second method. After the triggering condition is met, the period of sending one or more CSI-RS to the terminal is as described in the first method, which is not repeated here.

[0091] For example, after sending a paging message or downlink data to the terminal, the network device sends one or more CSI-RSs to the terminal every 1 millisecond.

[0092] Step 202: The terminal measures the one or more CSI-RSs.

[0093] Optionally, when the network device periodically sends one or more CSI-RS to the terminal (also understood as periodic CSI-RS), the terminal periodically measures the one or more CSI-RS. When the network device aperiodically sends one or more CSI-RS to the terminal, or when the network device instructs or triggers the terminal to measure the one or more CSI-RS (also understood as aperiodic CSI-RS), the terminal aperiodically measures the one or more CSI-RS. When the network device semi-persistently sends one or more CSI-RS to the terminal, or when the network device instructs or triggers the terminal to measure the one or more CSI-RS (also understood as semi-persistent CSI-RS), the terminal semi-persistently measures the one or more CSI-RS.

[0094] For any CSI-RS, the terminal measuring the CSI-RS may include: the terminal measuring a first parameter of the CSI-RS, and determining a measurement result of the CSI-RS according to the first parameter of the CSI-RS.

[0095] The first parameter may include one or more of the following: reference signal received power (RSRP), reference signal received quality (RSRQ), signal to interference plus noise ratio (SINR) or received signal strength indicator (RSSI).

[0096] Optionally, the measurement result of CSI-RS can represent the channel quality of downlink resources between the terminal corresponding to the CSI-RS and the network device. The higher the value of the CSI-RS measurement result, the better the channel quality of the downlink resources and / or uplink resources between the terminal corresponding to the CSI-RS and the network device. The lower the value of the CSI-RS measurement result, the lower the channel quality of the downlink resources and / or uplink resources between the terminal corresponding to the CSI-RS and the network device.

[0097] Optionally, the terminal determines the measurement result of the CSI-RS based on the first parameter of the CSI-RS, including: when the terminal measures a first parameter of the CSI-RS, the terminal may use the first parameter as the measurement result of the CSI-RS; when the terminal measures multiple first parameters of the CSI-RS, in order to improve the accuracy of the measurement result of the CSI-RS, the terminal may weight / filter the multiple first parameters to obtain the measurement result of the CSI-RS.

[0098] For example, before the terminal performs uplink or downlink communication with the network device, the network device sends one or more CSI-RS to the terminal once, and for each CSI-RS, the terminal measures the first parameter of the CSI-RS once. Taking the first parameter as RSRP as an example, the terminal can use the RSRP obtained by this measurement as the measurement result of the CSI-RS.

[0099] For another example, before the terminal performs uplink or downlink communication with the network device, if the network device periodically / aperiodically / semi-continuously sends one or more CSI-RS to the terminal multiple times, the terminal may measure the first parameter of one or more CSI-RS multiple times. For each CSI-RS, taking the first parameter as RSRP as an example, the terminal may measure the CSI-RS multiple times to obtain multiple RSRPs of the CSI-RS, and perform weighted / filtering processing on the multiple RSRPs of the CSI-RS to obtain the measurement result of the CSI-RS.

[0100] Wherein, when weighting / filtering multiple first parameters of CSI-RS are processed, the weight / filter coefficient corresponding to each first parameter is the same or different. Exemplarily, the weight / filter coefficient corresponding to the first parameter measured earlier is less than the weight / filter coefficient corresponding to the first parameter measured later.

[0101] For example, taking the parameter of CSI-RS as RSRP, the time when multiple RSRPs of CSI-RS are weighted / filtered is used as the reference point, and the weight / filter coefficient of RSRP measured at a time farther from the time is smaller. For example, the RSRP of the CSI-RS measured by the terminal in the first cycle, that is, time 1 is RSRP1, the RSRP of the CSI-RS measured by the terminal in the second cycle, that is, time 2 is RSRP2, and the RSRP of the CSI-RS measured by the terminal in the third cycle, that is, time 3 is RSRP3. Since the order of time is: time 3> time 2> time 1, the weight / filter coefficient w3 of RSRP3≥the weight / filter coefficient w2 of RSRP2≥the weight / filter coefficient w1 of RSRP1, and the measurement result of CSI-RS satisfies: RSRP1*w1+RSRP2*w2+RSRP3*w3.

[0102] Step 203: The terminal performs uplink communication or downlink communication with the network device according to the measurement results of one or more CSI-RSs.

[0103] The terminal performs uplink communication or downlink communication with the network device based on the measurement results of one or more CSI-RS. It can also be understood that the terminal performs uplink communication or downlink communication with the network device, and the uplink communication or the downlink communication corresponds to at least one CSI-RS among the one or more CSI-RS.

[0104] Optionally, the uplink communication may be uplink communication performed by the terminal in an RRC-inactive state, an RRC-connected state, or an RRC-idle state. Optionally, the downlink communication may be downlink communication performed by the terminal in an RRC-inactive state, an RRC-connected state, or an RRC-idle state.

[0105] Optionally, a terminal in the RRC-inactive state can receive a paging message sent by the network device for paging the terminal, and then perform uplink or downlink communication with the network device based on the measurement results of one or more CSI-RS; or, after being triggered by a high layer of the terminal, perform uplink or downlink communication with the network device based on the measurement results of one or more CSI-RS.

[0106] Among them, the paging message is used for the network device to page the terminal. For example, the paging message is used to indicate that the network device and the terminal are about to conduct uplink communication or downlink communication; or, the paging message is used to indicate that the terminal is switched from the RRC-inactive state or the RRC-idle state to the RRC-connected state. Optionally, the high layer of the terminal may include one or more of the service data adaptation protocol (SDAP) layer, the packet data convergence protocol (PDCP) layer, or the radio link control (RLC) layer.

[0107] Optionally, the terminal performing uplink or downlink communication with the network device based on the measurement results of one or more CSI-RS may include: the terminal obtaining a first resource based on the measurement results of one or more CSI-RS, and using the first resource to perform uplink or downlink communication with the network device.

[0108] The first resource may include a first uplink resource or a first downlink resource. The first uplink resource may include one or more of a time domain resource, a frequency domain resource, a spatial domain resource, or a code domain resource, and the first downlink resource may include one or more of a time domain resource, a frequency domain resource, a spatial domain resource, or a code domain resource, without limitation. Optionally, there is a corresponding relationship between the first uplink resource and the first downlink resource, and the corresponding relationship between the first uplink resource and the first downlink resource may be predefined or configured by a network device.

[0109] When the terminal performs uplink communication with the network device, the first resource includes a first uplink resource.

[0110] In a possible implementation, the first uplink resource corresponds to a resource corresponding to a CSI-RS having a higher value of a measurement result among one or more CSI-RSs, and may also correspond to a resource corresponding to a CSI-RS among one or more CSI-RSs. Exemplarily, if a CSI-RS corresponds to a downlink resource, the first uplink resource corresponds to a downlink resource corresponding to a CSI-RS having a higher value of a measurement result among one or more CSI-RSs, and may also correspond to a downlink resource corresponding to a CSI-RS among one or more CSI-RSs, without limitation. For example, after the terminal determines the downlink resource corresponding to the CSI-RS having a higher value of a measurement result among one or more CSI-RSs, it can determine the first uplink resource based on the downlink resource, and there is a corresponding relationship between the first uplink resource and the downlink resource.

[0111] In another possible implementation, one CSI-RS corresponds to one uplink resource, or one CSI-RS corresponds to one uplink resource and a downlink resource, and the first uplink resource includes an uplink resource corresponding to a CSI-RS having a higher value of a measurement result among one or more CSI-RSs, or the first uplink resource includes an uplink resource corresponding to a CSI-RS among one or more CSI-RSs, without limitation. For example, the terminal determines an uplink resource corresponding to a CSI-RS having a higher value of a measurement result from one or more CSI-RSs, and the uplink resource can be determined as the first uplink resource.

[0112] When the terminal performs downlink communication with the network device, the first resource includes a first downlink resource.

[0113] In a possible implementation, the first downlink resource corresponds to a resource corresponding to a CSI-RS having a higher value of a measurement result among one or more CSI-RSs, and may also correspond to a resource corresponding to a CSI-RS among one or more CSI-RSs. Exemplarily, if a CSI-RS corresponds to a downlink resource, or if a CSI-RS corresponds to a downlink resource and an uplink resource, the first downlink resource includes a downlink resource corresponding to a CSI-RS having a higher value of a measurement result among one or more CSI-RSs, or the first downlink resource includes a downlink resource corresponding to a CSI-RS among one or more CSI-RSs, without limitation. For example, the terminal determines the downlink resource corresponding to the CSI-RS having a higher value of a measurement result from one or more CSI-RSs, and may determine the downlink resource as the first downlink resource.

[0114] In another possible implementation, one CSI-RS corresponds to one uplink resource, and the first downlink resource corresponds to the uplink resource corresponding to the CSI-RS with a higher value of the measurement result among one or more CSI-RSs, and may also correspond to the uplink resource corresponding to one CSI-RS among one or more CSI-RSs, without limitation. For example, after the terminal determines the uplink resource corresponding to the CSI-RS with a higher value of the measurement result from one or more CSI-RSs, it can determine the first downlink resource based on the uplink resource, and the first downlink resource has a corresponding relationship with the uplink resource.

[0115] For the terminal, the uplink communication may include one or more of the following: uplink data transmission, uplink control information transmission, preamble code transmission or uplink sounding reference signal (SRS) transmission. Exemplarily, the terminal uses the first uplink resource to perform uplink communication with the network device, which may include the following cases (1.1) to (1.6):

[0116] Case (1.1): the terminal uses the first uplink resource to send uplink data to the network device.

[0117] Optionally, the uplink data may be carried in a PUSCH. In case (1.1), the first uplink resource may be referred to as a resource for transmitting uplink data or a resource for transmitting a PUSCH.

[0118] Optionally, when the terminal uses the first uplink resource to send uplink data to the network device, a demodulation reference signal (DMRS) is sent to the network device, and the sequence and / or resources of the DMRS correspond to the first downlink resource, so that when the network device receives the uplink data from the terminal, it can obtain the sequence and / or resources of the DMRS, obtain the first downlink resource according to the sequence and / or resources of the DMRS, and perform downlink communication with the terminal on the first downlink resource.

[0119] Further, in order to make the network device know that the resource used to transmit uplink data is the first uplink resource, or in order to make the network device know the downlink resource for downlink communication with the terminal, the terminal can send information related to the first resource to the network device when sending uplink data to the network device, so as to indicate the resource used to transmit uplink data or the downlink resource for downlink communication with the terminal to the network device. The information related to the first resource may include information related to the first uplink resource and / or information related to the first downlink resource.

[0120] Among them, the information related to the first uplink resource can be used to indicate the first uplink resource, for example, the information related to the first uplink resource can include the identifier of the CSI-RS corresponding to the first uplink resource or the identifier of the first uplink resource. The identifier of the CSI-RS can be used to identify the CSI-RS, and the identifier of the CSI-RS can be the index of the CSI-RS or the sequence corresponding to the CSI-RS or the index of the sequence corresponding to the CSI-RS. The identifier of the first uplink resource can be used to indicate the first uplink resource, and the identifier of the first uplink resource can be the index or number of the first uplink resource, etc., without limitation.

[0121] The information related to the first downlink resource may be used to indicate the first downlink resource. For example, the information related to the first downlink resource may include an identifier of the CSI-RS corresponding to the first downlink resource or an identifier of the first downlink resource. The identifier of the first downlink resource may be used to indicate the first downlink resource, and the identifier of the first downlink resource may be an index or number of the first downlink resource, etc., without limitation.

[0122] Exemplarily, taking the example that the information related to the first downlink resource includes the identifier of the CSI-RS corresponding to the first downlink resource, when the network device receives the identifier CSI-RS ID1 corresponding to CSI-RS1, the network device can obtain the first downlink resource corresponding to CSI-RS ID1 according to CSI-RSID1, that is, downlink resource 1, and perform downlink communication with the terminal through downlink resource 1, wherein there is a corresponding relationship between the identifier of CSI-RS and the first downlink resource (or the identifier of the first downlink resource), and the corresponding relationship between the identifier of CSI-RS and the first downlink resource (or the identifier of the first downlink resource) can be as shown in Table 1. Subsequently, the network device can also obtain the first uplink resource corresponding to downlink resource 1, that is, uplink resource 1, according to downlink resource 1, and perform uplink communication with the terminal through uplink resource 1, wherein there is a corresponding relationship between the first downlink resource (or the identifier of the first downlink resource) and the first uplink resource (or the identifier of the first uplink resource), and the corresponding relationship between the first downlink resource (or the identifier of the first downlink resource) and the first uplink resource (or the identifier of the first uplink resource) can be as shown in Table 2.

[0123] Table 1

[0124] CSI-RS Identification Downlink resources CSI-RS ID1 Downlink resource 1 CSI-RS ID2 Downlink resource 2 CSI-RS ID3 Downlink resource 3

[0125] Table 2

[0126] Downlink resources Uplink resources Downlink resource 1 Uplink Resource 1 Downlink resource 2 Uplink Resource 2 Downlink resource 3 Uplink Resource 3

[0127] It can be understood that the above Table 1 is only an example of the correspondence between the CSI-RS identifier and the first downlink resource, and the correspondence between the CSI-RS identifier and the first downlink resource may also be in other forms without limitation.

[0128] It can be understood that the above Table 2 is only an example of the correspondence between the first downlink resource and the first uplink resource, and the correspondence between the first downlink resource and the first uplink resource may also be in other forms without limitation.

[0129] Optionally, when the first resource is different from the fourth resource, the first resource is indicated to the network device, wherein the fourth resource may be a resource obtained by the terminal according to the configuration information sent by the network device last time, or the fourth resource may be the first resource measured by the terminal last time. Exemplarily, the terminal may indicate the first resource to the network device through information related to the first resource.

[0130] In case (1.2), the terminal uses the first uplink resource to send uplink control information to the network device.

[0131] The uplink control information may be physical (PHY) layer uplink control information, media access control (MAC) layer uplink control information or RRC layer uplink control information. The PHY layer uplink control information may also be called uplink control information (UCI), and the UCI may be carried in the PUCCH.

[0132] In case (1.2), the first uplink resource may be referred to as a resource for transmitting uplink control information or a transmission resource for uplink control information.

[0133] Optionally, the uplink control information may include one or more of the following: acknowledgement (ACK), not-acknowledgement (NACK), channel state information (CSI), channel quality indicator (CQI) information, precoding matrix indication (PMI) information, rank indication (RI) information, scheduling request (SR) information, resource request information for requesting uplink resources, configuration request information for requesting configuration during uplink communication, terminal identification code, measurement results of one or more CSI-RS or buffer status report (BSR), etc.

[0134] Optionally, in order to make the network device know that the resource used to transmit the uplink control information is the first uplink resource, or in order to make the network device know the downlink resource for downlink communication with the terminal, the terminal can send information related to the first resource to the network device when sending the uplink control information to the network device, so as to indicate the resource used to transmit the uplink control information or the downlink resource for downlink communication with the terminal to the network device. The information related to the first resource can refer to the description in the above situation (1.1) and will not be described in detail.

[0135] In case (1.3), the terminal uses the first uplink resource to send a preamble code (also referred to as a preamble) to the network device.

[0136] The preamble is used to initiate a random access request to a network device. In case (1.3), the first uplink resource may be referred to as a resource for transmitting a preamble, a transmission resource of a preamble, or a resource of a preamble.

[0137] Among them, the terminal uses the first uplink resource to send a preamble code to the network device, which can be applied to a 4-step random access procedure (random access channel procedure, RACH procedure) initiated by the terminal, and can also be applied to a 2-step random access procedure initiated by the terminal, without restriction. The 2-step random access procedure may refer to the terminal completing random access through two signaling interactions with the network device. The 4-step random access procedure may refer to the terminal completing random access through four signaling interactions with the network device.

[0138] Optionally, there is a correspondence between the sequence and / or resources of the preamble code and the first downlink resource. Subsequently, after the network device detects the preamble, it can obtain the first downlink resource according to the sequence and / or resources of the preamble code and perform downlink communication with the terminal on the first downlink resource.

[0139] Optionally, in order to make the network device know that the resource used to transmit the preamble is the first uplink resource, or in order to make the network device know the downlink resource for downlink communication with the terminal, the terminal can send information related to the first resource to the network device when sending the preamble to the network device, so as to indicate the first uplink resource or the downlink resource for downlink communication with the terminal to the network device. The information related to the first resource can refer to the description in the above situation (1.1) and will not be described in detail.

[0140] Alternatively, in situation (1.3), the network device may send one or more SSBs to the terminal, the terminal measures one or more SSBs, determines the second resource based on the measurement result of the SSB, and performs uplink or downlink communication with the network device through the second resource. Among them, the second resource may include a second uplink resource or a second downlink resource. There is a corresponding relationship between the SSB and the second resource. For example, the network device sends one or more SSBs to the terminal, the terminal measures one or more SSBs, determines the second uplink resource based on the measurement result of the SSB, and sends a preamble to the network device on the second uplink resource. Subsequently, after the network device receives the preamble on the second uplink resource, it can determine the second downlink resource corresponding to the second uplink resource based on the second uplink resource, and use the second downlink resource to perform downlink communication with the terminal.

[0141] In case (1.4), the terminal may use the first uplink resource to send uplink data and a preamble to the network device.

[0142] In case (1.4), the first uplink resource may be referred to as a resource for transmitting a preamble or a transmission resource for a preamble.

[0143] Optionally, in order to make the network device know that the resource used to transmit the preamble is the first uplink resource, or in order to make the network device know the downlink resource for downlink communication with the terminal, the terminal can send information related to the first resource to the network device when sending uplink data and the preamble to the network device, so as to indicate the first uplink resource or the downlink resource for downlink communication with the terminal to the network device. The information related to the first resource can refer to the description in the above situation (1.1) and will not be described in detail.

[0144] In case (1.5), the terminal may use the first uplink resource to send an uplink sounding reference signal (SRS) to the network device.

[0145] The SRS is used by the network device to measure the channel quality of the uplink resource. In case (1.5), the first uplink resource can be referred to as a resource for transmitting the SRS or a transmission resource of the SRS.

[0146] Optionally, in order to make the network device know that the resource used to transmit the SRS is the first uplink resource, or in order to make the network device know the downlink resource for downlink communication with the terminal, the terminal can send information related to the first resource to the network device when sending the SRS to the network device, so as to indicate the first uplink resource or the downlink resource for downlink communication with the terminal to the network device. The information related to the first resource can refer to the description in the above situation (1.1) and will not be repeated here.

[0147] In case (1.6), the terminal may use the first uplink resource to send uplink data and uplink control information to the network device.

[0148] Among them, the description of situation (1.6) can refer to the corresponding introduction in the above situation (1.1) and situation (1.2), and will not be repeated here.

[0149] For the terminal, downlink communication may include downlink data reception and / or downlink control information reception. Exemplarily, the terminal using the first downlink resource to perform downlink communication with the network device may include the following cases (2.1) to (2.3):

[0150] In case (2.1), the terminal uses the first downlink resource to receive downlink data from the network device.

[0151] The downlink data may be carried in the PDSCH. In case (2.1), the first downlink resource may be referred to as a resource for transmitting downlink data or a resource for transmitting the PDSCH.

[0152] In case (2.2), the terminal uses the first downlink resource to receive downlink control information from the network device.

[0153] The downlink control information may be PHY layer downlink control information, MAC layer downlink control information or RRC layer downlink control information. The PHY layer downlink control information may also be called downlink control information (DCI), which may be carried in the PDCCH.

[0154] In case (2.2), the first downlink resource may be referred to as a resource for transmitting downlink control information or a transmission resource for downlink control information.

[0155] Optionally, the downlink control information may include one or more of the following: ACK, NACK, resource request response, configuration request response, resource configuration, or an indication of whether there is subsequent downlink data.

[0156] In case (2.3), the terminal uses the first downlink resource to receive downlink data and downlink control information from the network device.

[0157] Optionally, after the terminal completes uplink communication or downlink communication, the transmission process can be ended. That is, at this time, the terminal does not communicate uplink or downlink with the network device, but monitors SSB and / or paging messages.

[0158] Correspondingly, on the network side, the network device can perform uplink communication or downlink communication with the terminal.

[0159] For the network device, uplink communication may include one or more of the following: uplink data reception, uplink control information reception, preamble detection or SRS reception. Exemplarily, the network device may use the first uplink resource to receive uplink data from the terminal; or the network device may use the first uplink resource to receive uplink control information from the terminal; or the network device may use the first uplink resource to detect the preamble sent by the terminal; or the network device may use the first uplink resource to receive uplink data from the terminal and / or detect the preamble from the terminal; or the network device may use the first uplink resource to receive SRS from the terminal; or the network device may use the first uplink resource to receive uplink data and uplink control information from the terminal.

[0160] The network device detecting the preamble code from the terminal may include: the network device estimating the transmission delay of the terminal according to the preamble code, and calibrating the uplink timing according to the transmission delay.

[0161] Optionally, the network device uses the first uplink resource to receive uplink data from the terminal, and receives a DMRS from the network device. The sequence and / or resources of the DMRS correspond to the first downlink resource. The network device obtains the sequence and / or resources of the DMRS, and obtains the first downlink resource based on the sequence and / or resources of the DMRS. Subsequently, the network device can perform downlink communication with the terminal on the first downlink resource.

[0162] Optionally, when the network device uses the first uplink resource to detect the preamble sent by the terminal, the network device obtains the first downlink resource according to the sequence of the preamble and / or the first uplink resource, and subsequently, the network device can perform downlink communication with the terminal on the first downlink resource. There is a corresponding relationship between the sequence of the preamble and / or the first uplink resource and the first downlink resource.

[0163] Optionally, the network device may also receive information related to the first resource from the terminal. The information related to the first resource may refer to the above situation (1.1), and will not be described in detail.

[0164] For a network device, downlink communication may include downlink data transmission and / or downlink control information transmission. Exemplarily, the network device may use the first downlink resource to send downlink data to the terminal, or the network device may use the first downlink resource to send downlink control information to the terminal; or the network device may use the first downlink resource to send downlink control information and downlink data to the terminal.

[0165] based on Figure 2In the method shown, the network device can send one or more CSI-RS to the terminal, the terminal receives one or more CSI-RS from the network device, and in the RRC-inactive state, measures one or more CSI-RS, and performs uplink or downlink communication with the network device based on the measurement results of the one or more CSI-RS. Since the measurement result of CSI-RS can more accurately characterize the channel quality of the transmission resource corresponding to the CSI-RS between the terminal and the network device, the terminal can select a transmission resource with better channel quality based on the measurement result of CSI-RS, and perform uplink or downlink communication with the network device on the transmission resource, thereby improving the communication performance between the terminal and the network device when the terminal is in the RRC-inactive state. At the same time, by Figure 2 The method described can determine a transmission resource with better transmission resource quality for the terminal. Subsequently, when the terminal switches to an RRC-idle state, an RRC-connected state or other states, the terminal can also perform uplink or downlink communication with a network device through the transmission resource, thereby improving the communication performance between the terminal and the network device when the terminal is in an RRC-idle state, an RRC-connected state or other states, and can also reduce the measurement overhead caused by determining a transmission resource with better channel quality when the terminal is in an RRC-idle state, an RRC-connected state or other states.

[0166] Further optional, such as Figure 3 As shown, Figure 2 The method shown also includes an optional step 301 .

[0167] Step 301: The network device sends configuration information to the terminal.

[0168] The configuration information may be used to configure one or more CSI-RSs. The configuration information may be referred to as CSI-RS configuration information.

[0169] The configuration information may include the configuration of the CSI-RS, or the configuration information may include an identifier of the configuration of the CSI-RS, and the identifier of the configuration of the CSI-RS may include a number of the configuration of the CSI-RS or an index of the configuration of the CSI-RS.

[0170] The configuration of CSI-RS may include resource configuration of CSI-RS, such as one or more of time domain resources, frequency domain resources, spatial domain resources or code domain resources of CSI-RS, so that the terminal measures one or more CSI-RS on time domain resources, frequency domain resources, spatial domain resources or code domain resources corresponding to one or more CSI-RS according to the configuration information. The configuration of CSI-RS may also include uplink resource configuration of resources corresponding to CSI-RS, or downlink control resource set (CORESET) configuration of resources corresponding to CSI-RS and other information, which is not limited.

[0171] Optionally, when the configuration information includes the configuration of the CSI-RS, the configuration information may be sent to the terminal in one of RRC dedicated information, random access response (RAR) / message B, or paging message, wherein RAR / message B is a response to the preamble.

[0172] Optionally, when the configuration information includes an identifier of the configuration of the CSI-RS, the configuration information may be included in any message of the RRC dedicated information and the paging message and sent to the terminal. In this case, optionally, the network device may also send the corresponding relationship between the configuration of the CSI-RS and the identifier of the configuration of the CSI-RS to the terminal, for example, the corresponding relationship between the configuration of the CSI-RS and the identifier of the configuration of the CSI-RS may be carried in the system information and sent to the terminal. Alternatively, the corresponding relationship between the configuration of the CSI-RS and the identifier of the configuration of the CSI-RS may also be predefined.

[0173] The RRC dedicated information may also be understood as terminal-specific information, or terminal-level information, or terminal-specific information, etc. The RRC dedicated information may be carried by RRC dedicated signaling or RRC dedicated messages. For example, the RRC dedicated information may be carried by one or more of a terminal-specific resource configuration message, an RRC release message, an RRC establishment message, an RRC recovery message, or an RRC rejection message.

[0174] Exemplarily, the network device may send RRC dedicated information to the terminal, and the RRC dedicated information includes the configuration information. For example, the network device sends an RRC release message to the terminal, and the RRC release message includes the configuration of the one or more CSI-RS. Exemplarily, the network device sends a RAR / message B to the terminal, and the RAR / message B includes the configuration of the one or more CSI-RS. Exemplarily, the network device may send a paging message to the terminal, and the paging message includes the configuration information. For example, the network device sends a paging message to the terminal, and the paging message includes the configuration of the one or more CSI-RS.

[0175] The system information may be carried by a system information block (SIB). Optionally, the SIB carries the correspondence between the configuration of the CSI-RS and the identifier of the configuration of the CSI-RS, and the terminal may obtain the correspondence between the configuration of the CSI-RS and the identifier of the configuration of the CSI-RS from the SIB. For example, the network device sends an RRC release message to the terminal, wherein the RRC release message includes the number of one or more CSI-RS configurations; the network device sends an SIB to the terminal, wherein the SIB includes the correspondence between the configuration of the CSI-RS and the identifier of the configuration of the CSI-RS, and after the terminal receives the SIB, it determines the configuration of one or more CSI-RS according to the identifier of the configuration of one or more CSI-RS.

[0176] Optionally, the network device sends the configuration information to the terminal through the fourth resource. This process can refer to the following Figure 7 Introduction in the methods shown.

[0177] Further optionally, when the network device and the terminal perform downlink communication / uplink communication, the communication environment between the network device and the terminal will change, such as: the channel quality of resources that originally had better quality becomes worse, and the channel quality of resources that originally had worse quality becomes better. In order to adapt to the change of the communication environment between the network device and the terminal, the network device sends update information or measurement instructions to the terminal. The update information is used to indicate the update of the configuration of one or more CSI-RS, so that after the terminal receives the update information, it measures the one or more CSI-RS according to the update information. The measurement indication is used to instruct the terminal to measure the one or more CSI-RS.

[0178] Exemplarily, the network device sends the update information or the measurement indication when sending downlink data to the terminal. For example, the network device sends the downlink data and the update information to the terminal; or, the network device sends the downlink data and the measurement indication to the terminal.

[0179] Exemplarily, the network device may send the update information or the measurement indication when sending downlink control information to the terminal. For example, the network device sends downlink control information to the terminal, and the downlink control information includes the update information or the measurement indication.

[0180] Exemplarily, the network device may send the update information or the measurement indication when sending MAC signaling to the terminal. For example, the network device sends MAC signaling to the terminal, and the MAC signaling carries the update information or the measurement indication.

[0181] Exemplarily, the network device may send the update information or the measurement indication when sending RRC signaling to the terminal. For example, the network device sends RRC signaling to the terminal, and the RRC signaling carries the update information or the measurement indication.

[0182] Optionally, the network device uses the first resource under the first condition to perform uplink or downlink communication with the terminal. The first condition includes one or more of the following: within the effective duration, before sending update information to the terminal, before sending a measurement indication to the terminal, or before obtaining a resource different from the first resource. In this way, the network device can improve the communication performance between the terminal and the network device by using the first resource within a certain time (for example, within the effective duration), or before obtaining a new resource, or before sending a measurement indication to the terminal, or before obtaining a resource different from the first resource, without the need to frequently send one or more CSI-RS and one or more CSI-RS configurations to the terminal, thereby reducing network overhead.

[0183] The effective duration may be predefined, or may be configured by the network device for the terminal. The effective duration may be the duration between time 1 and time 2.

[0184] Optionally, time 1 may be the time when the network device obtains the first resource, and time 2 may be the time when the network device completes uplink communication or downlink communication with the terminal.

[0185] Optionally, time 1 may be the time when the network device obtains the first resource, and time 2 may be the time when the network device sends configuration information to the terminal next time.

[0186] Those skilled in the art should understand that after the network device sends update information or measurement indication to the terminal, the terminal can measure one or more CSI-RS, obtain an updated first resource based on the measurement results of one or more CSI-RS, and use the updated first resource to perform uplink or downlink communication with the network device.

[0187] Correspondingly, on the terminal side, the terminal receives configuration information from the network device, determines the configuration of the CSI-RS according to the configuration information, and measures one or more CSI-RSs according to the configuration of the CSI-RS.

[0188] Exemplarily, taking the case where the configuration information is included in the RRC dedicated information, and the configuration information includes the configuration of one or more CSI-RS, the terminal can receive the RRC dedicated information from the network device (for example: information carried by the RRC release message or RAR / message B), obtain the configuration of the CSI-RS from the RRC dedicated information, and measure one or more CSI-RS according to the configuration of the CSI-RS.

[0189] For example, taking the case where the configuration information is carried in a paging message, and the configuration information includes the configuration of one or more CSI-RS, the terminal can receive a paging message from a network device, obtain the configuration of the CSI-RS from the paging message, and measure one or more CSI-RS according to the configuration of the CSI-RS.

[0190] Exemplarily, taking the case where the configuration information is carried in the RRC release message, the configuration information includes the number of one or more CSI-RS configurations, and the SIB includes the correspondence between the CSI-RS configuration and the identifier of the CSI-RS configuration, the terminal can receive the configuration information from the network device, and the terminal can also receive the SIB including the correspondence between the CSI-RS configuration and the identifier of the CSI-RS configuration from the network device, and determine the configuration of one or more CSI-RS based on the identifier of the one or more CSI-RS configurations.

[0191] Optionally, during downlink communication between the terminal and the network device, the terminal receives update information or measurement indication from the network device, so that after receiving the update information or measurement indication, the terminal measures the one or more CSI-RS according to the update information or measurement indication.

[0192] Exemplarily, when the terminal receives downlink data from the network device, it receives the update information or the measurement indication, for example, the terminal receives downlink data and update information from the network device; or, the terminal receives downlink data and measurement indication from the network device.

[0193] Exemplarily, the terminal receives the update information when receiving downlink control information from the network device. For example, the terminal receives downlink control information from the network device, and the downlink control information includes the update information or the measurement indication.

[0194] Exemplarily, the terminal receives the update information when receiving MAC signaling from the network device. For example, the terminal receives MAC signaling from the network device, and the MAC signaling carries the update information or the measurement indication.

[0195] Exemplarily, the terminal receives the update information when receiving RRC signaling from the network device. For example, the terminal receives RRC signaling from the network device, and the RRC signaling carries the update information or the measurement indication.

[0196] Optionally, the terminal uses the first resource to perform uplink or downlink communication with the network device under a first condition, wherein the first condition includes one or more of the following: within the effective duration, before receiving update information from the network device, before receiving a measurement indication from the network device, or before measuring a resource different from the first resource. In this way, the terminal can improve the communication performance between the terminal and the network device by using the first resource within a certain time (e.g., within the effective duration), or before receiving update information from the network device, or before receiving a measurement indication from the network device, or before measuring a resource different from the first resource, without the need to frequently measure one or more CSI-RS to obtain resources, thereby reducing measurement overhead.

[0197] The effective duration may be the duration between time 3 and time 4.

[0198] Optionally, time 3 may be the time when the terminal obtains the first resource, and time 2 may be the time when the terminal completes uplink communication or downlink communication with the network device.

[0199] Optionally, time 4 may be the time when the terminal obtains the first resource, and time 2 may be the time when the terminal receives configuration information from the network device next time.

[0200] Those skilled in the art should understand that when a terminal receives the update information or measurement indication, it can measure one or more CSI-RS according to the update information or measurement indication, obtain an updated first resource according to the measurement results of one or more CSI-RS, and use the updated first resource to perform uplink or downlink communication with the network device.

[0201] based on Figure 3 According to the method shown, the network device can send configuration information for configuring the one or more CSI-RS to the terminal, and the terminal can receive the configuration information from the network device and measure the one or more CSI-RS according to the configuration information, so that uplink or downlink communication can be performed with the network device based on the measurement results of the one or more CSI-RS, thereby improving the communication performance between the terminal and the network device.

[0202] Below Figure 2 Taking the resource pool described in step 201 as CG as an example, the communication method provided by the embodiment of the present application is introduced. Specifically, Figure 4 As shown, the communication method includes steps 401 to 405.

[0203] Step 401: The network device sends configuration information to the terminal via RRC dedicated information.

[0204] The network device may be Figure 1 The network device 101 in Figure 1 For example, the network device described in step 401 may be a processor in the network device 101, a chip in the network device 101, or a chip system in the network device 101, etc., without limitation.

[0205] The terminal may be Figure 1 Any terminal 102 in the RRC-connected state may also be a component in the terminal 102. For example, the terminal described in step 401 may be a processor in the terminal 102, a chip in the terminal 102, or a chip system in the terminal 102, etc., without limitation. The terminal is in the RRC-connected state.

[0206] It can be understood that step 401 is an optional step. That is, when executing the communication method provided in the embodiment of the present application, the network device and the terminal may not execute step 401.

[0207] The specific process of step 401 can refer to the corresponding introduction in the above step 301 and will not be described in detail.

[0208] Step 402: The network device sends one or more CSI-RS to the terminal.

[0209] Step 403: The terminal measures the one or more CSI-RSs.

[0210] Step 404: The terminal obtains a first uplink resource based on the measurement results of one or more CSI-RS, where the first uplink resource belongs to the CG resource.

[0211] Step 405: The terminal sends uplink data to the network device using the first uplink resource.

[0212] Correspondingly, the network device uses the first uplink resource to receive uplink data from the terminal.

[0213] The specific process of step 402 to step 405 can refer to the corresponding introduction in step 201 to step 203 above, and will not be described in detail.

[0214] Optionally, after step 405, the network device determines a first downlink resource corresponding to the first uplink resource according to the first uplink resource, and uses the first downlink resource to perform downlink communication with the terminal. For example, the network device uses the first downlink resource to send ACK or NACK to the terminal.

[0215] Further optionally, if the network device updates the configuration of the one or more CSI-RS, the network device sends update information to the terminal when using the first downlink resource to send ACK or NACK to the terminal. The update information is used to indicate the update of the configuration of the one or more CSI-RS, so that after the terminal receives the update information, it measures the one or more CSI-RS according to the update information; or, if the network device instructs the terminal to measure the one or more CSI-RS, the network device sends a measurement indication to the terminal when using the first downlink resource to send ACK or NACK to the terminal. The measurement indication is used to instruct the terminal to measure the one or more CSI-RS.

[0216] It is understandable that after step 405, the network device may optionally use the first uplink resource to communicate with the terminal in an uplink manner, and / or use the first downlink resource to communicate with the terminal in a downlink manner until the transmission process ends. The end of the transmission process may mean that the terminal has no uplink data to send to the network device, and the network device has no downlink data to send to the terminal; or the network device indicates to the terminal that there is no downlink transmission; or the terminal has not received any downlink transmission from the network device for a period of time.

[0217] Optionally, after the transmission process is completed, the terminal monitors or receives a paging message or system information.

[0218] Further optionally, the terminal measures one or more SSBs, obtains a third resource based on the measurement results of the one or more SSBs, and monitors the paging message or system information on the third resource. The third resource may include time domain resources, and / or frequency domain resources, and / or spatial domain resources.

[0219] based on Figure 4 According to the method shown, when the terminal is in the RRC-connected state, the terminal can receive configuration information from the network device through RRC dedicated information; when the terminal is in the RRC-inactive state and enters the transmission process, the terminal can measure one or more CSI-RS according to the configuration information, obtain a first uplink resource based on the measurement results of one or more CSI-RS, and use the first uplink resource to send uplink data to the network device, thereby improving the communication performance between the terminal and the network device.

[0220] Combine the following Figure 5 , based on the above Figure 2The communication method provided by the embodiment of the present application is introduced by taking the method in which the terminal sends a preamble code to the network device and applying it in a 2-step random access process as an example.

[0221] Specifically, Figure 5 As shown, the communication method includes steps 501 to 506.

[0222] Step 501: The network device sends configuration information to the terminal via RRC dedicated information.

[0223] The network device may be Figure 1 The network device 101 in Figure 1 For example, the network device described in step 501 may be a processor in the network device 101, a chip in the network device 101, or a chip system in the network device 101, etc., without limitation.

[0224] The terminal may be Figure 1 The terminal 102 in step 501 may be any terminal 102, or a component in the terminal 102. For example, the terminal described in step 501 may be a processor in the terminal 102, a chip in the terminal 102, or a chip system in the terminal 102, etc., without limitation. The terminal is in the RRC-connected state.

[0225] It can be understood that step 501 is an optional step. That is, when executing the communication method provided in the embodiment of the present application, the network device and the terminal may not execute step 501.

[0226] The specific process of step 501 can refer to the corresponding introduction in the above step 301 and will not be described in detail.

[0227] Step 502: The network device sends one or more CSI-RS to the terminal.

[0228] Step 503: The terminal measures the one or more CSI-RSs.

[0229] Step 504: The terminal obtains a first uplink resource according to the measurement result of one or more CSI-RSs.

[0230] Step 505: The terminal uses the first uplink resource to send uplink data and a preamble to the network device.

[0231] Exemplarily, the terminal uses the first uplink resource to send uplink data and a preamble to the network device; correspondingly, the network device uses the first uplink resource to receive uplink data and a preamble from the terminal. Optionally, the network device or the terminal determines a first downlink resource corresponding to the first uplink resource based on the first uplink resource; or, the network device receives information related to the first downlink resource from the terminal, and determines the first downlink resource based on the information related to the first downlink resource.

[0232] Step 506: The network device uses the first downlink resource to send the RAR or message B to the terminal.

[0233] Correspondingly, the terminal uses the first downlink resource to receive the RAR or message B from the network device.

[0234] The above steps 505 to 506 are a two-step random access process. In this way, the first uplink resource obtained by measuring one or more CSI-RSs can be used to implement the two-step random access process, thereby improving the success rate of random access.

[0235] The specific process of step 502 to step 506 can refer to the corresponding introduction in step 201 to step 203 above, and will not be described in detail.

[0236] Optionally, if the network device updates the configuration of one or more CSI-RS, the network device may send update information to the terminal when sending RAR or message B to the terminal. The update information is used to indicate the update of the configuration of one or more CSI-RS; correspondingly, when the terminal receives the RAR or message B from the network device, it receives the update information from the network device and measures one or more CSI-RS according to the update information; or, if the network device instructs the terminal to measure the one or more CSI-RS, when the network device sends RAR or message B to the terminal, it sends a measurement indication to the terminal, and the measurement indication is used to instruct the terminal to measure the one or more CSI-RS; correspondingly, when the terminal receives the RAR or message B from the network device, it receives the measurement indication from the network device and measures one or more CSI-RS according to the measurement indication.

[0237] It is understandable that after step 506, the network device may optionally use the first uplink resource to communicate with the terminal in an uplink manner, and / or use the first downlink resource to communicate with the terminal in a downlink manner until the transmission process ends. The end of the transmission process may mean that the terminal has no uplink data to send to the network device, and the network device has no downlink data to send to the terminal; or the network device indicates to the terminal that there is no downlink transmission; or the terminal has not received any downlink transmission from the network device for a period of time.

[0238] Optionally, after the transmission process is completed, the terminal monitors or receives a paging message or system information.

[0239] Further optionally, the terminal measures one or more SSBs, obtains a third resource based on the measurement results of the one or more SSBs, and monitors the paging message or system information on the third resource. The third resource may include time domain resources, and / or frequency domain resources, and / or spatial domain resources.

[0240] based on Figure 5 According to the method shown, when the terminal is in the RRC-connected state, the terminal can receive configuration information from the network device through RRC dedicated information. When the terminal is in the RRC-inactive state and enters the transmission process, the terminal can measure one or more CSI-RS according to the configuration information, obtain a first uplink resource according to the measurement results of one or more CSI-RS, and use the first uplink resource to perform uplink data transmission and preamble code transmission with the network device, thereby improving the success rate of random access.

[0241] In a possible implementation, the following Figure 6 , based on the above Figure 2 The communication method provided by the embodiment of the present application is introduced by taking the method shown in which the terminal sends a preamble code to the network device and applies it in a 4-step random access process as an example.

[0242] Specifically, Figure 6 As shown, the communication method includes steps 601 to 607.

[0243] Step 601: The terminal sends a preamble code to a network device using a second uplink resource.

[0244] The terminal may be Figure 1 Any terminal 102 in the RRC-inactive state may also be a component in the terminal 102. For example, the terminal described in step 601 may be a processor in the terminal 102, a chip in the terminal 102, or a chip system in the terminal 102, etc., without limitation. The terminal is in the RRC-inactive state.

[0245] Among them, the method for determining the second uplink resource can refer to the description in situation (1.3) in 2.

[0246] Correspondingly, the network device may use the second uplink resource to receive the preamble from the terminal. The network device may also determine a second downlink resource corresponding to the second uplink resource based on the second uplink resource.

[0247] Step 602: The network device uses the second downlink resource to send the RAR and configuration information to the terminal.

[0248] The network device may be Figure 1 The network device 101 in Figure 1 For example, the network device described in step 602 may be a processor in the network device 101, a chip in the network device 101, or a chip system in the network device 101, etc., without limitation.

[0249] Among them, the specific introduction of the configuration information can refer to the corresponding introduction in the above step 301, which will not be repeated here.

[0250] Correspondingly, the terminal uses the second downlink resource to receive the RAR and configuration information from the network device.

[0251] It is understandable that in step 602, the network device may not send configuration information to the terminal, and correspondingly, the terminal may not receive configuration information from the network device.

[0252] Step 603: The network device sends one or more CSI-RS to the terminal.

[0253] Step 604: The terminal measures the one or more CSI-RSs.

[0254] Step 605: The terminal obtains a first uplink resource according to the measurement result of one or more CSI-RSs.

[0255] Step 606: The terminal sends uplink data to the network device using the first uplink resource.

[0256] Correspondingly, the network device uses the first uplink resource to receive uplink data from the terminal.

[0257] Optionally, in step 607 , the network device sends message 4 (message 4) to the terminal using the first downlink resource.

[0258] Message 4 may also be understood as a contention resolution message, for example, which may be used to indicate that random access contention is successful.

[0259] Optionally, the network device may also use the first downlink resource to send an ACK or NACK of the uplink data to the terminal.

[0260] Correspondingly, the terminal uses the first downlink resource to receive message 4 from the network device.

[0261] Optionally, the terminal may also use the first downlink resource to receive ACK or NACK for the uplink data from the network device.

[0262] The specific process of step 603 to step 607 can refer to the corresponding introduction in step 201 to step 203 above, and will not be repeated here.

[0263] Among them, the above steps 601-602, and steps 606-607 are a four-step random access process. For steps 601-602, the second uplink resource can be used to implement the transmission of the preamble code, and the second downlink resource can be used to implement the transmission of the RAR. There is no need to obtain the resources of the preamble code before the four-step random process, which reduces the measurement overhead. For steps 606-607, the first uplink resource obtained by measuring one or more CSI-RS can be used to transmit uplink data, and the first downlink resource corresponding to the first uplink resource can be used to transmit message 4, thereby improving the communication performance of the random access process.

[0264] Optionally, if the network device updates the configuration of one or more CSI-RS, the network device sends update information to the terminal when performing downlink communication with the terminal. The update information is used to indicate the update of the configuration of one or more CSI-RS, so that after the terminal receives the update information, it measures one or more CSI-RS according to the update information. For example, when the network device sends an ACK message or a NACK message to the terminal, the update information is sent to the terminal, so that after the terminal receives the update information, it measures one or more CSI-RS according to the update information.

[0265] Optionally, if the network device instructs the terminal to measure the one or more CSI-RS, the network device sends a measurement indication to the terminal when performing downlink communication with the terminal, and the measurement indication is used to instruct the terminal to measure the one or more CSI-RS, so that the terminal measures the one or more CSI-RS according to the measurement indication after receiving the measurement indication. For example, when the network device sends an ACK or NACK to the terminal, the measurement indication is sent to the terminal, so that the terminal measures the one or more CSI-RS according to the measurement indication after receiving the measurement indication.

[0266] It is understandable that after step 607, the network device may optionally use the first uplink resource to communicate with the terminal in an uplink manner, and / or use the first downlink resource to communicate with the terminal in a downlink manner until the transmission process ends. The end of the transmission process may mean that the terminal has no uplink data to send to the network device, and the network device has no downlink data to send to the terminal; or the network device indicates to the terminal that there is no downlink transmission; or the terminal has not received any downlink transmission from the network device for a period of time.

[0267] Optionally, after the transmission process is completed, the terminal monitors or receives a paging message or system information.

[0268] Further optionally, the terminal measures one or more SSBs, obtains a third resource based on the measurement results of the one or more SSBs, and monitors the paging message or system information on the third resource. The third resource may include time domain resources, and / or frequency domain resources, and / or spatial domain resources.

[0269] based on Figure 6 According to the method shown, the terminal can use the second uplink resource to send a preamble code to the network device; after the network device receives the preamble code using the second uplink resource, it can send configuration information when sending the RAR to the terminal. Therefore, after the terminal receives the RAR and configuration information from the network device, it can measure one or more CSI-RS according to the configuration information, and obtain the first uplink resource according to the measurement results of one or more CSI-RS, and use the first uplink resource to send uplink data to the network device, thereby improving the communication performance between the terminal and the network device.

[0270] The following takes the example of a network device sending the configuration information to a terminal through a fourth resource to introduce the communication method provided by the embodiment of the present application. Figure 7 As shown, the communication method includes steps 701 to 706.

[0271] Step 701: The network device sends a paging message to the terminal.

[0272] The network device may be Figure 1 The network device 101 in Figure 1 For example, the network device described in step 701 may be a processor in the network device 101, a chip in the network device 101, or a chip system in the network device 101, etc., without limitation.

[0273] The terminal can be Figure 1 Any terminal 102 in the RRC-inactive state may also be a component in the terminal 102. For example, the terminal described in step 701 may be a processor in the terminal 102, a chip in the terminal 102, or a chip system in the terminal 102, etc., without limitation. The terminal is in the RRC-inactive state.

[0274] The paging message is used by the network device to page the terminal, for example, it can be used to trigger the terminal to perform uplink communication or downlink communication with the network device.

[0275] Correspondingly, the terminal receives a paging message from the network device.

[0276] Optionally, after receiving the paging message, the terminal may perform uplink communication or downlink communication with the network device.

[0277] Step 702: The network device uses the fourth resource to send downlink data and configuration information to the terminal.

[0278] Among them, the specific introduction of the configuration information can refer to the corresponding introduction in the above step 301, which will not be repeated here.

[0279] Correspondingly, the terminal uses the fourth resource to receive downlink data and configuration information from the network device.

[0280] Optionally, the network device may not send configuration information to the terminal in step 702. Correspondingly, the terminal may not receive configuration information from the network device.

[0281] Step 703: The network device sends one or more CSI-RS to the terminal.

[0282] Step 704: The terminal measures the one or more CSI-RSs.

[0283] It is understandable that step 703 can be performed before step 704. The embodiment of the present application does not limit step 703 to Figure 7 The execution order in the method shown is not limited, for example, step 703 can be executed before step 701, or after step 701 and before step 702.

[0284] Step 705: The terminal obtains a first uplink resource according to the measurement result of one or more CSI-RSs.

[0285] Step 706: The terminal sends an ACK or NACK for the downlink data to the network device using the first uplink resource.

[0286] Correspondingly, the network device uses the first uplink resource to receive ACK or NACK of the downlink data from the terminal.

[0287] The specific process of step 703 to step 706 can be referred to the introduction in step 201 to step 203 above, and will not be described in detail.

[0288] It can be understood that after step 706, the network device may further send update information to the terminal. The update information is used to indicate the update of the configuration of one or more CSI-RSs, so that after the terminal receives the update information, it measures the one or more CSI-RSs according to the update information; or, the network device may further send a measurement indication to the terminal, the measurement indication is used to indicate the measurement of the configuration of one or more CSI-RSs, so that after the terminal receives the measurement indication, it measures the configuration of the one or more CSI-RSs according to the measurement indication.

[0289] It is understandable that after step 706, the network device may optionally use the first uplink resource to communicate with the terminal in an uplink manner, and / or use the first downlink resource to communicate with the terminal in a downlink manner until the transmission process ends. The end of the transmission process may mean that the terminal has no uplink data to send to the network device, and the network device has no downlink data to send to the terminal; or the network device indicates to the terminal that there is no downlink transmission; or the terminal has not received any downlink transmission from the network device for a period of time.

[0290] Optionally, after the transmission process is completed, the terminal monitors the paging message or system information.

[0291] Further optionally, the terminal measures one or more SSBs, obtains a third resource based on the measurement results of the one or more SSBs, and monitors the paging message or system information on the third resource. The third resource may include time domain resources, and / or frequency domain resources, and / or spatial domain resources.

[0292] based on Figure 7 According to the method shown, the terminal can receive a paging message from a network device, convert from a non-transmission process to a transmission process, and receive downlink data and configuration information from the network device on a fourth resource. Therefore, the terminal can measure one or more CSI-RS according to the configuration information, and obtain the first resource based on the measurement results of one or more CSI-RS, so that the terminal can use the first resource to communicate data with the network device to improve the communication performance between the terminal and the network device.

[0293] In a possible implementation, the network device sends the configuration information to the terminal via a paging message. The following takes the example of the network device sending the configuration information to the terminal via a paging message to introduce the communication method provided in the embodiment of the present application. Figure 8 As shown, the communication method includes steps 801 to 805.

[0294] Step 801: The network device sends configuration information to the terminal via a paging message.

[0295] The network device may be Figure 1 The network device 101 in Figure 1 For example, the network device described in step 801 may be a processor in the network device 101, a chip in the network device 101, or a chip system in the network device 101, etc., without limitation.

[0296] The terminal may be Figure 1Any terminal 102 in the RRC-inactive state may also be a component in the terminal 102. For example, the terminal described in step 801 may be a processor in the terminal 102, a chip in the terminal 102, or a chip system in the terminal 102, etc., without limitation. The terminal is in the RRC-inactive state.

[0297] The paging message is used by the network device to page the terminal, for example, it can be used to trigger the terminal to perform uplink communication or downlink communication with the network device.

[0298] Optionally, the network device sends the configuration information to the terminal via a paging message, including: the network device sends a paging message to the terminal, and the paging message includes the configuration information.

[0299] For a detailed description of the configuration information, please refer to the corresponding description in the above step 301, which will not be described in detail here.

[0300] Correspondingly, the terminal receives configuration information from the network device through a paging message.

[0301] Optionally, the terminal receives the configuration information from the network device via a paging message, including: the terminal receives a paging message from the network device, and the paging message includes the configuration information.

[0302] It can be understood that step 801 is an optional step. That is, when executing the communication method provided in the embodiment of the present application, the network device and the terminal may not execute step 801.

[0303] Step 802: The network device sends one or more CSI-RS to the terminal.

[0304] Step 803: The terminal measures the one or more CSI-RSs.

[0305] Step 804: The terminal obtains a first resource according to measurement results of one or more CSI-RSs.

[0306] Step 805: The terminal uses the first resource to perform uplink communication and downlink communication with the network device.

[0307] The uplink communication includes preamble transmission, or uplink data transmission and preamble transmission.

[0308] For example, the terminal uses the first uplink resource to send a preamble to the network device, or the terminal uses the first uplink resource to send a preamble and uplink data to the network device. Correspondingly, the network device uses the first uplink resource to receive a preamble from the terminal, or the network device uses the first uplink resource to receive a preamble and uplink data from the terminal.

[0309] The downlink communication includes one or more of downlink control information transmission, RAR / message B transmission or downlink data transmission.

[0310] For example, the network device uses the first downlink resource to send RAR / message B to the terminal, or the network device uses the first downlink resource to send RAR / message B and downlink data to the terminal. Correspondingly, the terminal uses the first downlink resource to receive RAR / message B from the network device, or the terminal uses the first downlink resource to receive RAR / message B and downlink data from the network device. Subsequently, the terminal may also use the first uplink resource to send ACK or NACK of the downlink data to the network device, and the network device may also use the first uplink resource to receive ACK or NACK of the downlink data from the terminal.

[0311] The specific process of step 802 to step 805 can be referred to the introduction in step 201 to step 203 above, and will not be described in detail.

[0312] Optionally, after step 805, if the network device updates the configuration of one or more CSI-RS, the network device sends update information to the terminal. The update information is used to indicate the update of the configuration of the one or more CSI-RS, so that after the terminal receives the update information, it measures the one or more CSI-RS according to the update information; or, if the network device indicates to measure one or more CSI-RS, the network device sends a measurement indication to the terminal, and the measurement indication is used to indicate the measurement of the one or more CSI-RS, so that after the terminal receives the measurement indication, it measures the one or more CSI-RS according to the measurement indication.

[0313] It is understandable that after step 805, the network device may also use the first uplink resource to perform uplink communication with the terminal, and / or use the first downlink resource to perform downlink communication with the terminal until the transmission process ends. The end of the transmission process may mean that the terminal has no uplink data to send to the network device, and the network device has no downlink data to send to the terminal; or the network device indicates to the terminal that there is no downlink transmission; or the terminal has not received downlink transmission from the network device for a period of time.

[0314] Optionally, after the transmission process is completed, the terminal monitors or receives a paging message or system information.

[0315] Further optionally, the terminal measures one or more SSBs, obtains a third resource based on the measurement results of the one or more SSBs, and monitors the paging message or system information on the third resource. The third resource may include time domain resources, and / or frequency domain resources, and / or spatial domain resources.

[0316] based on Figure 8According to the method shown, when the terminal is in the RRC-inactive state, the terminal can receive configuration information from the network device through a paging message, measure one or more CSI-RS according to the configuration information, and obtain a first resource based on the measurement results of one or more CSI-RS. Subsequently, the terminal can use the first resource to communicate data with the network device, thereby improving the communication performance between the terminal and the network device.

[0317] In a possible implementation, when the first resource is different from the fourth resource, the terminal may indicate the first resource to the network device. The following takes the example of the terminal monitoring the paging message in the RRC-inactive state to introduce the communication method provided in the embodiment of the present application. Specifically, Fig. 9 As shown, the communication method includes steps 901 to 905.

[0318] Step 901: The network device sends configuration information to the terminal via a paging message.

[0319] The network device may be Figure 1 The network device 101 in Figure 1 For example, the network device described in step 901 may be a processor in the network device 101, a chip in the network device 101, or a chip system in the network device 101, etc., without limitation.

[0320] The terminal can be Figure 1 Any terminal 102 in the RRC-inactive state may also be a component in the terminal 102. For example, the terminal described in step 901 may be a processor in the terminal 102, a chip in the terminal 102, or a chip system in the terminal 102, etc., without limitation. The terminal is in the RRC-inactive state.

[0321] The paging message is used by the network device to page the terminal, for example, it can be used to trigger the terminal to perform uplink communication or downlink communication with the network device.

[0322] Optionally, the network device sends the configuration information to the terminal via a paging message, including: the network device periodically sends a paging message to the terminal, and the paging message includes the configuration information.

[0323] For a detailed description of the configuration information, please refer to the corresponding description in the above step 301, which will not be described in detail here.

[0324] Correspondingly, the terminal receives configuration information from the network device through a paging message.

[0325] Optionally, the terminal receives the configuration information from the network device via a paging message, including: the terminal periodically receives a paging message from the network device, and the paging message includes the configuration information.

[0326] It can be understood that step 901 is an optional step. That is, when executing the communication method provided in the embodiment of the present application, the network device and the terminal may not execute step 901.

[0327] Step 902: The network device sends one or more CSI-RS to the terminal.

[0328] Step 903: The terminal measures the one or more CSI-RSs.

[0329] Step 904: The terminal obtains a first resource according to measurement results of one or more CSI-RSs.

[0330] The specific process of step 902 to step 904 can be referred to the introduction in step 201 to step 203 above, and will not be described in detail.

[0331] Step 905: If the first resource is different from the fourth resource, the terminal indicates the first resource to the network device.

[0332] The fourth resource is a resource obtained by the terminal according to the configuration information sent by the network device last time. The fourth resource can also be described as the first resource measured by the terminal last time.

[0333] Optionally, if the first resource is the same as the fourth resource, the terminal may measure one or more SSBs, obtain a third resource based on the measurement results of the one or more SSBs, and use the third resource to monitor the paging message or system information. The third resource may include time domain resources, and / or frequency domain resources, and / or spatial domain resources.

[0334] Optionally, the terminal indicating the first resource to the network device includes: the terminal sending information related to the first resource to the network device. For a detailed description of this process, please refer to Figure 2 The corresponding description in the method shown is not repeated here.

[0335] based on Fig. 9 According to the method shown, when the terminal is in the RRC-inactive state, the terminal can receive configuration information from the network device through a paging message, measure one or more CSI-RS according to the configuration information, and obtain a first resource based on the measurement results of one or more CSI-RS. If the first resource is different from the fourth resource, the terminal indicates the first resource to the network device. Subsequently, the terminal can use the first resource when communicating with the network device, thereby improving the communication performance when the terminal communicates with the network device.

[0336] Corresponding to the method provided in the above method embodiment, the present application embodiment also provides a corresponding device, including a module for executing the corresponding module of the above embodiment. The module can be software, hardware, or a combination of software and hardware.

[0337] Fig.10 A schematic diagram of the structure of a device is given. The device 100 may be a network device, a terminal, a chip, a chip system, or a processor that supports the network device to implement the above method, or a chip, a chip system, or a processor that supports the terminal to implement the above method. The device may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.

[0338] The device 100 may include one or more processors 1001, which may also be referred to as a processing unit, and may implement certain control functions. The processor 1001 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process the communication protocol and the communication data, and the central processing unit may be used to control the communication device (e.g., a base station, a baseband chip, a terminal, a terminal chip, a DU or a CU, etc.), execute the software program, and process the data of the software program.

[0339] In an optional design, the processor 1001 may also store instructions 1003, and the instructions 1003 can be executed by the processor so that the device 100 executes the method described in the above method embodiment.

[0340] In another optional design, the processor 1001 may include a transceiver unit for implementing the receiving and sending functions. For example, the transceiver unit may be a transceiver circuit, or an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and sending functions may be separate or integrated. The above-mentioned transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or the above-mentioned transceiver circuit, interface, or interface circuit may be used for transmitting or delivering signals.

[0341] In yet another possible design, the apparatus 100 may include a circuit, which may implement the functions of sending, receiving, or communicating in the aforementioned method embodiments.

[0342] Optionally, the device 100 may include one or more memories 1002, on which instructions 1004 may be stored, and the instructions may be executed on the processor so that the device 100 performs the method described in the above method embodiment. Optionally, data may also be stored in the memory. Optionally, instructions and / or data may also be stored in the processor. The processor and memory may be provided separately or integrated together. For example, the corresponding relationship described in the above method embodiment may be stored in a memory or in a processor.

[0343] Optionally, the device 100 may further include a transceiver 1005 and / or an antenna 1006. The processor 1001 may be referred to as a processing unit, which controls the device 100. The transceiver 1005 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, a transceiver device or a transceiver module, etc., which is used to implement a transceiver function.

[0344] Optionally, the apparatus 100 in the embodiment of the present application may be used to execute Figure 2-Figure 9 The method described in any one of the figures may also be used to execute a method in which the methods described in two or more of the above figures are combined with each other.

[0345] The processor and transceiver described in the present application can be implemented in an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0346] The device described in the above embodiments may be a network device or a terminal, but the scope of the device described in this application is not limited thereto, and the structure of the device may not be limited thereto. Fig.10The device may be a stand-alone device or may be part of a larger device. For example, the device may be:

[0347] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0348] (2) having a set of one or more ICs, and optionally, the IC set may also include a storage component for storing data and / or instructions;

[0349] (3) ASIC, such as modem (MSM);

[0350] (4) Modules that can be embedded in other devices;

[0351] (5) Receivers, terminals, smart terminals, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, machine equipment, home equipment, medical equipment, industrial equipment, etc.;

[0352] (6)Others

[0353] Fig.11 A schematic diagram of the structure of a terminal is provided. The terminal can be applied to Figure 1 In the scenario shown. For ease of illustration, Fig.11 Only the main components of the terminal are shown. Fig.11 As shown, the terminal 110 includes a processor, a memory, a control circuit, an antenna, and an input-output device. The processor is mainly used to process the communication protocol and communication data, and to control the entire terminal, execute the software program, and process the data of the software program. The memory is mainly used to store the software program and data. The radio frequency circuit is mainly used for converting the baseband signal and the radio frequency signal and processing the radio frequency signal. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. The input-output device, such as a touch screen, a display screen, a keyboard, etc., is mainly used to receive data input by the user and output data to the user.

[0354] When the terminal is turned on, the processor can read the software program in the storage unit, parse and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the RF circuit. The RF circuit processes the baseband signal to obtain the RF signal and sends the RF signal outward in the form of electromagnetic waves through the antenna. When data is sent to the terminal, the RF circuit receives the RF signal through the antenna, and the RF signal is further converted into a baseband signal, and the baseband signal is output to the processor, and the processor converts the baseband signal into data and processes the data.

[0355] For ease of explanation, Fig.11Only one memory and processor are shown. In an actual terminal, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiment of the present invention.

[0356] As an optional implementation, the processor may include a baseband processor and a central processing unit. The baseband processor is mainly used to process the communication protocol and communication data, and the central processing unit is mainly used to control the entire terminal, execute software programs, and process software program data. Fig.11 The processor in integrates the functions of the baseband processor and the central processing unit. Those skilled in the art will appreciate that the baseband processor and the central processing unit may also be independent processors interconnected by technologies such as buses. Those skilled in the art will appreciate that the terminal may include multiple baseband processors to adapt to different network formats, and the terminal may include multiple central processing units to enhance its processing capabilities, and the various components of the terminal may be connected through various buses. The baseband processor may also be described as a baseband processing circuit or a baseband processing chip. The central processing unit may also be described as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built into the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.

[0357] In one example, the antenna and control circuit having transceiver functions may be regarded as the transceiver unit 1111 of the terminal 110, and the processor having a processing function may be regarded as the processing unit 1112 of the terminal 110. Fig.11 As shown, the terminal 110 includes a transceiver unit 1111 and a processing unit 1112. The transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver device, etc. Optionally, the device used to implement the receiving function in the transceiver unit 1111 may be regarded as a receiving unit, and the device used to implement the sending function in the transceiver unit 1111 may be regarded as a sending unit, that is, the transceiver unit 1111 includes a receiving unit and a sending unit. Exemplarily, the receiving unit may also be referred to as a receiver, a receiver, a receiving circuit, etc., and the sending unit may be referred to as a transmitter, a transmitter, or a transmitting circuit, etc. Optionally, the above-mentioned receiving unit and the sending unit may be one integrated unit, or may be a plurality of independent units. The above-mentioned receiving unit and the sending unit may be located in one geographical location, or may be dispersed in multiple geographical locations.

[0358] like Fig.12As shown, another embodiment of the present application provides a device 120. The device can be a terminal, or a component of a terminal (for example, an integrated circuit, a chip, etc.). Alternatively, the device can be a network device, or a component of a network device (for example, an integrated circuit, a chip, etc.). The device can also be other communication modules for implementing the method in the method embodiment of the present application. The device 120 may include: a processing module 1202 (or a processing unit). Optionally, it may also include a transceiver module 1201 (or a transceiver unit) and a storage module 1203 (or a storage unit).

[0359] In one possible design, Fig.12 One or more modules in the may be implemented by one or more processors, or by one or more processors and memories; or by one or more processors and transceivers; or by one or more processors, memories and transceivers, which are not limited in the embodiments of the present application. The processor, memory, and transceiver may be provided separately or integrated.

[0360] The device has the function of implementing the terminal described in the embodiment of the present application. For example, the device includes a module or unit or means corresponding to the steps involved in the terminal described in the embodiment of the present application. The function or unit or means can be implemented by software, or by hardware, or by hardware executing the corresponding software implementation, or by a combination of software and hardware. For details, please refer to the corresponding description in the aforementioned corresponding method embodiment. Alternatively, the device has the function of implementing the network device described in the embodiment of the present application. For example, the device includes a module or unit or means corresponding to the steps involved in the network device described in the embodiment of the present application. The function or unit or means can be implemented by software, or by hardware, or by hardware executing the corresponding software implementation, or by a combination of software and hardware. For details, please refer to the corresponding description in the aforementioned corresponding method embodiment.

[0361] Optionally, each module in the apparatus 120 in the embodiment of the present application can be used to execute the embodiment of the present application. Figure 2-Figure 9 The method described in any one of the figures may also be used to execute a method in which the methods described in two or more of the above figures are combined with each other.

[0362] In a possible implementation, a device 120 may include: a processing module 1202 and a transceiver module 1201 .

[0363] In one possible design, the processing module 1202 is used to control the device 120 to measure one or more CSI-RS in the RRC-inactive state.

[0364] The processing module 1202 is further configured to control the transceiver module 1201 to perform uplink communication or downlink communication with the network device according to the measurement result of the one or more CSI-RSs.

[0365] In an embodiment of the present application, a terminal (e.g., device 120) can measure one or more CSI-RSs when the terminal is in an RRC-inactive state, and perform uplink or downlink communication with a network device based on the measurement results of the one or more CSI-RSs. Since the measurement results of the CSI-RS can characterize the channel quality of the transmission resources corresponding to the CSI-RS between the terminal and the network device, the terminal can select a transmission resource with better channel quality based on the measurement results of the CSI-RS, and perform uplink or downlink communication with the network device on the transmission resource, thereby improving the communication performance between the terminal and the network device when the terminal is in the RRC-inactive state. In addition, when the terminal measures one or more CSI-RS, it can determine a transmission resource with better channel quality for the terminal. Subsequently, when the terminal switches to an RRC-idle state, an RRC-connected state, or other states, the terminal can also communicate uplink or downlink with the network device through the transmission resource, thereby improving the communication performance between the terminal and the network device when the terminal is in an RRC-idle state, an RRC-connected state, or other states, and can also reduce the measurement overhead caused by determining a transmission resource with better channel quality when the terminal is in an RRC-idle state, an RRC-connected state, or other states.

[0366] In one possible design, the uplink communication includes one or more of the following: uplink data transmission, uplink control information transmission, preamble code transmission, or uplink sounding reference signal transmission.

[0367] In an embodiment of the present application, a terminal (e.g., device 120) can perform various uplink communications with a network device, such as uplink data transmission, uplink control information transmission, preamble code transmission, or uplink sounding reference signal transmission, based on the measurement results of one or more CSI-RSs. While improving the communication performance of the uplink communication between the terminal and the network device, the flexibility and diversity of the uplink communication between the terminal and the network device can also be improved.

[0368] In one possible design, the downlink communication includes downlink data reception and / or downlink control information reception.

[0369] In an embodiment of the present application, a terminal (e.g., device 120) can perform various downlink communications such as downlink data reception and / or downlink control information reception with a network device based on measurement results of one or more CSI-RSs, thereby improving the communication performance of the downlink communication between the terminal and the network device while also improving the flexibility and diversity of the downlink communication between the terminal and the network device.

[0370] In one possible design, the processing module 1202 is specifically used to obtain a first resource including a first uplink resource or a first downlink resource based on the measurement results of the one or more CSI-RS, and control the transceiver module 1201 to use the first resource to perform uplink communication or downlink communication with the network device.

[0371] In an embodiment of the present application, a terminal (e.g., device 120) can obtain a first resource based on the measurement results of one or more CSI-RSs, and use the first uplink resource to perform uplink communication with the network device, or use the first downlink resource to perform downlink communication with the network device. Because the measurement results of the CSI-RS can reflect the channel quality of the corresponding resources, when the terminal and the network device communicate, the communication performance between the terminal and the network device can be improved by using the first resource.

[0372] In one possible design, the first resource includes one or more of time domain resources, frequency domain resources, spatial domain resources, or code domain resources.

[0373] In an embodiment of the present application, the terminal (for example, device 120) can determine multiple resources such as time domain resources, frequency domain resources, spatial domain resources or code domain resources based on the measurement results of the CSI-RS, and use one or more of the time domain resources, frequency domain resources, spatial domain resources or code domain resources to perform uplink communication or downlink communication with the network device. In this way, the diversity of resources used for uplink communication or downlink communication between the terminal and the network device can be improved, and the flexibility of uplink communication or downlink communication between the terminal and the network device can be improved.

[0374] In one possible design, the transceiver module 1201 is also used to send information related to the first resource to the network device, wherein the information related to the first resource is used to indicate the first resource.

[0375] In an embodiment of the present application, the terminal (for example, device 120) can send information related to the first resource and used to indicate the first resource to the network device, and indicate the first resource determined by the terminal according to the measurement result of the CSI-RS to the network device, so that the network device uses the first resource to communicate with the terminal according to the indication of the terminal, thereby improving the communication performance between the terminal and the network device.

[0376] In one possible design, the processing module 1202 is further specifically used to control the transceiver module 1201 to use the first resource under a first condition to perform uplink or downlink communication with the network device, wherein the first condition includes one or more of the following: within the effective duration, before receiving update information from the network device, before receiving a measurement indication from the network device, or before measuring a resource different from the first resource; the update information is used to indicate an update of the configuration of the one or more CSI-RS; and the measurement indication is used to indicate measurement of the one or more CSI-RS.

[0377] In an embodiment of the present application, a terminal (e.g., device 120) may use the first resource to perform uplink or downlink communication with the network device within a certain period of time, before obtaining a new CSI-RS configuration, before receiving a measurement instruction from the network device, or before measuring a resource different from the first resource. In this way, the terminal may use the same resource to communicate with the network device within a certain period of time, and does not need to frequently measure one or more CSI-RS to update the resources used for communication, thereby reducing the measurement overhead of the terminal and the frequency of resource updates.

[0378] In one possible design, the transceiver module 1201 is also used to receive configuration information from the network device, wherein the configuration information is used to configure the one or more CSI-RS.

[0379] In an embodiment of the present application, the network device can configure the CSI-RS to the terminal (for example, device 120). Since the network device has a centralized management function for the communication status of the terminal, the result obtained by the terminal through measurement based on the CSI-RS configured by the network device can more accurately reflect the channel quality, thereby improving the communication performance between the terminal and the network device.

[0380] In one possible design, the configuration information is included in one or more of RRC dedicated information, paging message or system information.

[0381] In the embodiment of the present application, the terminal (eg, device 120) may receive configuration information from the network device through various types of information, thereby increasing the diversity and flexibility of the terminal in acquiring the configuration information.

[0382] In one possible design, the processing module 1202 is specifically used to control the transceiver module 1201 to perform the uplink communication or the downlink communication with the network device in the RRC-inactive state, the RRC-idle state or the RRC-connected state.

[0383] In an embodiment of the present application, a terminal (e.g., device 120) can perform uplink or downlink communication with a network device in an RRC-inactive state, an RRC-idle state, or an RRC-connected state according to the measurement results of one or more CSI-RS in the RRC-inactive state. Since the measurement results of the CSI-RS can characterize the channel quality of the transmission resources corresponding to the CSI-RS between the terminal and the network device, the terminal can select a transmission resource with better channel quality according to the measurement results of the CSI-RS, and perform uplink or downlink communication with the network device on the transmission resource, thereby improving the communication performance between the terminal and the network device when the terminal is in the RRC-inactive state. In addition, when the terminal measures one or more CSI-RS, it can determine a transmission resource with better channel quality for the terminal. Subsequently, when the terminal switches to an RRC-idle state, an RRC-connected state, or other states, the terminal can also communicate uplink or downlink with the network device through the transmission resource, thereby improving the communication performance between the terminal and the network device when the terminal is in an RRC-idle state, an RRC-connected state, or other states, and can also reduce the measurement overhead caused by determining a transmission resource with better channel quality when the terminal is in an RRC-idle state, an RRC-connected state, or other states.

[0384] In one possible design, in an RRC-inactive state, measuring one or more CSI-RSs includes: in an RRC-inactive state, measuring one or more of a reference signal received power, a reference signal received quality, a signal to interference plus noise ratio, or a received signal strength indication of the one or more CSI-RSs. Optionally, for any one of the one or more CSI-RSs, one or more of a reference signal received power, a reference signal received quality, a signal to interference plus noise ratio, or a received signal strength indication of the CSI-RS may be used as a first parameter.

[0385] In an embodiment of the present application, the terminal (e.g., device 120) can measure one or more related parameters of the CSI-RS, such as the reference signal received power, the reference signal received quality, the signal to interference plus noise ratio, or the received signal strength indication, which can characterize the channel quality, in the RRC-inactive state, and obtain a measurement result. In this way, the flexibility and diversity of the CSI-RS measurement can be improved.

[0386] In one possible design, a first resource is obtained based on a measurement result of the one or more CSI-RSs, including: determining a resource corresponding to a CSI-RS with a higher first parameter among the one or more CSI-RSs as the first resource.

[0387] In an embodiment of the present application, a terminal (e.g., device 120) may determine, among the one or more CSI-RSs, a resource corresponding to a CSI-RS with a higher first parameter as a first resource. Since the measurement result of the CSI-RS may characterize the channel quality of the transmission resource corresponding to the CSI-RS between the terminal and the network device, the channel quality / communication quality of the first resource corresponding to the CSI-RS with a higher first parameter is better, so that the terminal uses the resource corresponding to the CSI-RS with a higher first parameter to communicate with the network device, which may better improve the communication performance between the terminal and the network device.

[0388] In another possible implementation, a device 120 may include: a transceiver module 1201 .

[0389] In one possible design, the transceiver module 1201 is used to send one or more CSI-RS to the terminal, where the one or more CSI-RS are used for measurement in an RRC-inactive state.

[0390] The transceiver module 1201 is further configured to perform uplink communication or downlink communication with the terminal, where the uplink communication or the downlink communication corresponds to at least one CSI-RS among the one or more CSI-RSs.

[0391] In an embodiment of the present application, a network device (e.g., device 120) may send one or more CSI-RS to a terminal so that the terminal may measure the one or more CSI-RS in an RRC-inactive state, and perform uplink or downlink communication with the network device based on the measurement result. Since CSI-RS can characterize the channel quality of the transmission resource corresponding to the CSI-RS between the terminal and the network device, after the network device sends the CSI-RS to the terminal, it may perform uplink or downlink communication with the terminal on a transmission resource corresponding to a certain CSI-RS (e.g., a transmission resource corresponding to a CSI-RS with better channel quality), thereby improving the communication performance between the network device and the terminal.

[0392] In one possible design, the uplink communication includes one or more of the following: uplink data reception, uplink control information reception, preamble code detection, or uplink sounding reference signal reception.

[0393] In an embodiment of the present application, a network device (e.g., device 120) can perform uplink communications with a terminal, such as uplink data reception, uplink control information reception, preamble code detection, or uplink sounding reference signal reception corresponding to a CSI-RS. While improving the communication performance of the uplink communication between the network device and the terminal, the flexibility and diversity of the uplink communication between the network device and the terminal can also be improved.

[0394] In one possible design, the downlink communication includes downlink data transmission and / or downlink control information transmission.

[0395] In an embodiment of the present application, a network device (e.g., device 120) can perform downlink data transmission corresponding to CSI-RS with a terminal, and / or downlink communication such as downlink control information transmission, thereby improving the communication performance of the downlink communication between the network device and the terminal while also improving the flexibility and diversity of the downlink communication between the network device and the terminal.

[0396] In one possible design, the transceiver module 1201 is specifically used to use a first resource including a first uplink resource or a first downlink resource to perform uplink communication or downlink communication with the terminal, wherein the first resource corresponds to at least one CSI-RS among the one or more CSI-RS.

[0397] In an embodiment of the present application, a network device (e.g., device 120) may perform uplink communication with a terminal on a first uplink resource corresponding to at least one CSI-RS, or the network device may perform downlink communication with a terminal on a first downlink resource corresponding to at least one CSI-RS. Because the measurement result of the CSI-RS can characterize the channel quality of the transmission resource corresponding to the CSI-RS between the terminal and the network device, when the network device communicates with the terminal, the communication performance between the network device and the terminal is improved by using the first resource corresponding to the CSI-RS with better channel quality.

[0398] In one possible design, the first resource includes one or more of time domain resources, frequency domain resources, spatial domain resources, or code domain resources.

[0399] In an embodiment of the present application, a network device (such as device 120) can use multiple resources such as time domain resources, frequency domain resources, spatial domain resources or code domain resources to perform uplink communication or downlink communication with a network device. In this way, the diversity of resources used for uplink communication or downlink communication between the network device and the terminal can be improved, and the flexibility of uplink communication or downlink communication between the network device and the terminal can be improved.

[0400] In one possible design, the transceiver module 1201 is also used to receive information related to the first resource from the terminal, wherein the information related to the first resource is used to indicate the first resource.

[0401] In an embodiment of the present application, a network device (e.g., device 120) can receive information related to the first resource from a terminal, and thus can determine the first resource based on the information related to the first resource, so as to use the first resource in subsequent uplink or downlink communications with the terminal, thereby improving communication performance with the terminal.

[0402] In one possible design, the transceiver module 1201 is further specifically used to use the first resource under a first condition to perform uplink or downlink communication with the terminal, wherein the first condition includes one or more of the following: within the effective duration, before sending update information to the terminal, before sending a measurement indication to the terminal, or before obtaining a resource different from the first resource; the update information is used to indicate an update to the configuration of the one or more CSI-RS; the measurement indication is used to indicate measurement of the one or more CSI-RS.

[0403] In an embodiment of the present application, a network device (e.g., device 120) may use the first resource to perform uplink or downlink communication with the terminal within a certain period of time, before sending a new CSI-RS configuration to the terminal, before sending a measurement indication to the terminal, or before obtaining a resource different from the first resource. In this way, the network device may use the same resource to communicate with the terminal within a fixed time period, without the need to update the resources used for communication, thereby reducing the frequency of resource updates.

[0404] In one possible design, the transceiver module 1201 is also used to send configuration information to the terminal, where the configuration information is used to configure the one or more CSI-RS.

[0405] In an embodiment of the present application, a network device (e.g., apparatus 120) may send configuration information to a terminal. Since the network device has a centralized management function for the communication status of the terminal, the CSI-RS configured by the network device may enable the result obtained by the terminal measuring the CSI-RS to more accurately reflect the channel quality, thereby improving the communication performance between the terminal and the network device.

[0406] In one possible design, the configuration information is included in one or more of RRC dedicated information, paging message or system information.

[0407] In the embodiment of the present application, the network device (eg, apparatus 120) may send configuration information to the terminal via various types of information, thereby increasing the diversity and flexibility of the network device in sending the configuration information.

[0408] It is understandable that some optional features in the embodiments of the present application may be implemented independently in certain scenarios without relying on other features, such as the solution on which they are currently based, to solve corresponding technical problems and achieve corresponding effects, or may be combined with other features according to needs in certain scenarios. Accordingly, the devices provided in the embodiments of the present application may also realize these features or functions accordingly, which will not be elaborated here.

[0409] Those skilled in the art can also understand that the various illustrative logical blocks and steps listed in the embodiments of the present application can be implemented by electronic hardware, computer software, or a combination of the two. Whether such functions are implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art can use various methods to implement the functions for corresponding applications, but such implementation should not be understood as exceeding the scope of protection of the embodiments of the present application.

[0410] It is understood that the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by an integrated logic circuit of hardware in the processor or an instruction in the form of software. The above processor can be a general processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (application specific integrated circuit, ASIC), a field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

[0411] The scheme described in the present application can be implemented in various ways. For example, these technologies can be implemented in a combination of hardware, software or hardware. For hardware implementation, the processing unit for executing these technologies at a communication device (for example, a base station, a terminal, a network entity or a chip) can be implemented in one or more general-purpose processors, DSPs, digital signal processing devices, ASICs, programmable logic devices, FPGAs, or other programmable logic devices, discrete gates or transistor logic, discrete hardware components, or any combination thereof. The general-purpose processor can be a microprocessor, and optionally, the general-purpose processor can also be any traditional processor, controller, microcontroller or state machine. The processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration to implement.

[0412] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0413] The present application also provides a computer-readable medium on which a computer program is stored. When the computer program is executed by a computer, the functions of any of the above method embodiments are implemented.

[0414] The present application also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0415] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0416] It is understood that the "embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, the various embodiments in the entire specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It is understood that in various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.

[0417] It can be understood that in the present application, "when", "if" and "if" all mean that the device will take corresponding actions under certain objective circumstances, and do not limit the time, nor do they require that the device must have a judgment action when it is implemented, nor do they mean that there are other limitations.

[0418] The term “simultaneously” in the present application may be understood as at the same time point, within a period of time, or within the same cycle.

[0419] Those skilled in the art will appreciate that the first, second, and other various digital numbers involved in the present application are only for the convenience of description and are not intended to limit the scope of the embodiments of the present application. The specific values ​​of the numbers (also referred to as indexes), the specific values ​​of the quantities, and the positions in the present application are only for illustrative purposes, are not the only form of representation, and are not intended to limit the scope of the embodiments of the present application. The first, second, and other various digital numbers involved in the present application are also only for the convenience of description and are not intended to limit the scope of the embodiments of the present application.

[0420] In this application, elements expressed in the singular are intended to mean "one or more" rather than "one and only one", unless otherwise specified. In this application, "at least one" is intended to mean "one or more", and "more than one" is intended to mean "two or more", unless otherwise specified.

[0421] In addition, the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. A can be singular or plural, and B can be singular or plural. The character " is generally used to indicate that the associated objects are in an "or" relationship.

[0422] In this article, the term "at least one of..." or "at least one of..." means all or any combination of the listed items. For example, "at least one of A, B, and C" can mean: A exists alone, B exists alone, C exists alone, A and B exist at the same time, B and C exist at the same time, and A, B, and C exist at the same time, where A can be singular or plural, B can be singular or plural, and C can be singular or plural.

[0423] It can be understood that in each embodiment of the present application, “B corresponding to A” should mean that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean determining B only based on A, and B can also be determined based on A and / or other information.

[0424] The corresponding relationships shown in each table in the present application can be configured or predefined. The values ​​of the information in each table are only examples and can be configured as other values, which are not limited by the present application. When configuring the corresponding relationship between the information and each parameter, it is not necessarily required to configure all the corresponding relationships illustrated in each table. For example, in the table in the present application, the corresponding relationships shown in some rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above table, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables can also use other names that can be understood by the communication device, and the values ​​or representations of the parameters can also be other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables.

[0425] The predefined in the present application may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0426] It will be appreciated by those skilled in the art that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0427] Those skilled in the art will appreciate that, for the sake of convenience and brevity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0428] It is understood that the systems, devices and methods described in the present application can also be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0429] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0430] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0431] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0432] The same or similar parts between the various embodiments in this application can refer to each other. In the various embodiments in this application, and the various implementation methods / implementation methods / implementation methods in each embodiment, if there is no special explanation and logical conflict, the terms and / or descriptions between different embodiments and the various implementation methods / implementation methods / implementation methods in each embodiment are consistent and can be referenced to each other. The technical features in different embodiments and the various implementation methods / implementation methods / implementation methods in each embodiment can be combined to form new embodiments, implementation methods, implementation methods, or implementation methods according to their inherent logical relationships. The above-described implementation methods of this application do not constitute a limitation on the scope of protection of this application.

[0433] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application.

Claims

1. A communication method, characterized in that: The method comprises: In the radio resource control inactive RRC-inactive state, measuring one or more channel state information reference signals CSI-RS; Obtaining a first resource according to a measurement result of the one or more CSI-RSs; Use the first resource to perform uplink or downlink communication with a network device under a first condition, wherein the first condition includes one or more of the following: within a valid duration, before receiving update information from the network device, before receiving a measurement indication from the network device, or before measuring a resource different from the first resource; the update information is used to indicate an update of the configuration of the one or more CSI-RS; the measurement indication is used to indicate measurement of the one or more CSI-RS.

2. The method according to claim 1, characterized in that The uplink communication includes one or more of the following: uplink data transmission, uplink control information transmission, preamble code transmission or uplink sounding reference signal transmission.

3. The method according to claim 1, characterized in that The downlink communication includes downlink data reception and / or downlink control information reception.

4. The method according to any one of claims 1 to 3, characterized in that The first resource includes one or more of time domain resources, frequency domain resources, space domain resources or code domain resources.

5. The method according to any one of claims 1 to 3, characterized in that: The method further comprises: Sending information related to the first resource to the network device, wherein the information related to the first resource is used to indicate the first resource.

6. The method according to any one of claims 1 to 3, characterized in that The method further comprises: Configuration information is received from the network device, wherein the configuration information is used to configure the one or more CSI-RSs.

7. The method according to claim 6, characterized in that The configuration information is included in one or more of RRC dedicated information, random access response, paging message or system information.

8. The method according to any one of claims 1 to 3, characterized in that The uplink communication or downlink communication with the network device includes: In the RRC-inactive state, the uplink communication or the downlink communication is performed with the network device.

9. A communication method, characterized in that: The method comprises: Sending one or more channel state information reference signals CSI-RS to the terminal, wherein the one or more CSI-RS are used for measurement in a radio resource control inactive RRC-inactive state; Use a first resource under a first condition to perform uplink or downlink communication with the terminal, wherein the first condition includes one or more of the following: within a valid duration, before sending update information to the terminal, before sending a measurement indication to the terminal, or before obtaining a resource different from the first resource; the update information is used to indicate an update of the configuration of the one or more CSI-RSs; the measurement indication is used to indicate measurement of the one or more CSI-RSs; the first resource corresponds to at least one of the one or more CSI-RSs.

10. The method according to claim 9, characterized in that The uplink communication includes one or more of the following: uplink data reception, uplink control information reception, preamble code detection or uplink sounding reference signal reception.

11. The method according to claim 9, characterized in that The downlink communication includes downlink data transmission and / or downlink control information transmission.

12. The method according to any one of claims 9 to 11, characterized in that: The first resource includes one or more of time domain resources, frequency domain resources, space domain resources or code domain resources.

13. The method according to any one of claims 9 to 11, characterized in that: The method further comprises: Information related to the first resource is received from the terminal, wherein the information related to the first resource is used to indicate the first resource.

14. The method according to any one of claims 9 to 11, characterized in that: The method further comprises: Send configuration information to the terminal, where the configuration information is used to configure the one or more CSI-RSs.

15. The method according to claim 14, characterized in that The configuration information is included in one or more of RRC dedicated information, random access response, paging message or system information.

16. A communication device, characterized in that: The device comprises: a processing module and a transceiver module; The processing module is used to control the device to measure one or more channel state information reference signals CSI-RS in a radio resource control inactive RRC-inactive state; The processing module is used to obtain a first resource based on the measurement results of the one or more CSI-RSs, and control the transceiver module to use the first resource to perform uplink or downlink communication with the network device under a first condition, wherein the first condition includes one or more of the following: within a valid time period, before receiving update information from the network device, before receiving a measurement indication from the network device, or before measuring a resource different from the first resource; the update information is used to indicate an update of the configuration of the one or more CSI-RSs; the measurement indication is used to indicate measurement of the one or more CSI-RSs.

17. The device according to claim 16, characterized in that The uplink communication includes one or more of the following: uplink data transmission, uplink control information transmission, preamble code transmission or uplink sounding reference signal transmission.

18. The device according to claim 16, characterized in that The downlink communication includes downlink data reception and / or downlink control information reception.

19. The device according to any one of claims 16 to 18, characterized in that The first resource includes one or more of time domain resources, frequency domain resources, space domain resources or code domain resources.

20. The device according to any one of claims 16 to 18, characterized in that The transceiver module is further used to send information related to the first resource to the network device, wherein the information related to the first resource is used to indicate the first resource.

21. The device according to any one of claims 16 to 18, characterized in that The transceiver module is further used to receive configuration information from the network device, wherein the configuration information is used to configure the one or more CSI-RSs.

22. The device according to claim 21, characterized in that The configuration information is included in one or more of RRC dedicated information, paging message or system information.

23. The device according to any one of claims 16 to 18, characterized in that The processing module is specifically used to control the transceiver module to perform the uplink communication or the downlink communication with the network device in the RRC-inactive state.

24. A communication device, characterized in that: The device comprises: a transceiver module; The transceiver module is used to send one or more channel state information reference signals CSI-RS to the terminal, wherein the one or more CSI-RS are used for measurement in a radio resource control inactive RRC-inactive state; The transceiver module is used to use a first resource under a first condition to perform uplink communication or downlink communication with the terminal, wherein the first condition includes one or more of the following: within a valid duration, before sending update information to the terminal, before sending a measurement indication to the terminal, or before obtaining a resource different from the first resource; the update information is used to indicate an update of the configuration of the one or more CSI-RSs; the measurement indication is used to indicate measurement of the one or more CSI-RSs; the first resource corresponds to at least one of the one or more CSI-RSs.

25. The device according to claim 24, characterized in that The uplink communication includes one or more of the following: uplink data reception, uplink control information reception, preamble code detection or uplink sounding reference signal reception.

26. The device according to claim 24, characterized in that The downlink communication includes downlink data transmission and / or downlink control information transmission.

27. The device according to any one of claims 24 to 26, characterized in that The first resource includes one or more of time domain resources, frequency domain resources, space domain resources or code domain resources.

28. The device according to any one of claims 24 to 26, characterized in that The transceiver module is further used to receive information related to the first resource from the terminal, wherein the information related to the first resource is used to indicate the first resource.

29. The device according to any one of claims 24 to 26, characterized in that The transceiver module is further used to send configuration information to the terminal, wherein the configuration information is used to configure the one or more CSI-RSs.

30. The device according to claim 29, characterized in that The configuration information is included in one or more of RRC dedicated information, paging message or system information.

31. A communication device, characterized in that: include: A processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the device executes the method as claimed in any one of claims 1 to 8, or executes the method as claimed in any one of claims 9 to 15.

32. A computer readable medium having a computer program or instruction stored thereon, characterized in that: When the computer program or instructions are executed, the computer performs the method according to any one of claims 1 to 8 or the method according to any one of claims 9 to 15.

33. A computer program product, comprising computer program code, characterized in that: When the computer program code is executed on a computer, the computer is enabled to implement the method according to any one of claims 1 to 8 or the method according to any one of claims 9 to 15.

34. A chip, characterized in that: include: A processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the chip executes the method as described in any one of claims 1 to 8 or the method as described in any one of claims 9 to 15.

35. A communication system, characterized in that: include: The device as claimed in any one of claims 16 to 23, and / or the device as claimed in any one of claims 24 to 30.

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