WO2021134367A1

WO2021134367A1 - Communication method and apparatus

Info

Publication number: WO2021134367A1
Application number: PCT/CN2019/130207
Authority: WO
Inventors: 骆喆; 陈雁; 张云昊; 徐修强
Original assignee: 华为技术有限公司
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2021-07-08
Also published as: CN114287154A

Abstract

Embodiments of the present application relate to the field of radio communication, and provide a communication method and apparatus, capable of improving communication performance between a terminal and a network device when the terminal is in communication with the network device. The method comprises: a terminal, when in a radio resource control inactive state, measuring one or more channel state information reference signals; and performing uplink communication or downlink communication with a network device according to a measurement result of the one or more channel state information reference signals.

Description

Communication method and device

Technical field

The embodiments of the present application relate to the field of wireless communication, and in particular, to a communication method and device.

Background technique

In the system (for example, the new radio (NR) system), the terminal can be in the radio resource control connected (RRC-connected) state, and the radio resource control idle (RRC-idle) state Or the radio resource control inactive (radio resource control inactive, RRC-inactive) state.

When the terminal is in the RRC-connected state, the terminal is connected to a network device (for example, 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 and the network device (such as the access network device) are not connected, 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 find it The terminal. The terminal can receive one or more of paging messages, synchronization signals, broadcast messages, 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 and the network device (such as the access network device) are not connected, 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 may receive one or more of a paging message, a synchronization signal, a broadcast message, or system information from the network device.

With the development of wireless communication technology, terminals in the RRC-idle state and/or terminals in the RRC-inactive state can receive one or more of paging messages, synchronization signals, broadcast messages, or system information from network devices. In addition to this, it is also possible to perform unicast data transmission with network equipment. Since the terminal in the RRC-idle state and/or the terminal in the RRC-inactive state is not connected to the network device, at this time, if the terminal in the RRC-idle state and/or the terminal in the RRC-inactive state performs a single operation with the network device Broadcast data transmission, will cause the communication performance between the terminal and the network device to be unable to be guaranteed.

Summary of the invention

The embodiments of the present application provide a communication method and device, which can improve the communication performance between the terminal and the network device when the terminal communicates with the network device.

In order to achieve the foregoing objectives, the following technical solutions are adopted in the embodiments of this application:

In the first aspect, the embodiments of the present application provide a communication method, which may be executed by a terminal, or may be executed by a component of the terminal, such as a processor, a chip, or a chip system inside the terminal. The method includes: in the RRC-inactive state, measuring one or more channel state information reference signals (channel state information reference signals, CSI-RS), according to the measurement results of the one or more CSI-RS, and the network equipment Perform uplink communication or downlink communication.

The method provided in the above first aspect can measure one or more CSI-RS when the terminal is in the RRC-inactive state, and perform uplink communication or downlink communication with the network device according to the measurement result of the one or more CSI-RS, Since the CSI-RS measurement result can 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 according to the CSI-RS measurement result, and Perform up and down communication or downlink communication with the network device on the transmission resource, so as to improve 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 transitions to the RRC-idle state, the RRC-connected state, or other states, the terminal can also use the transmission resource Uplink or downlink communication with network equipment can improve the communication performance between the terminal and network equipment when the terminal is in the RRC-idle state, RRC-connected state or other states, and it can also reduce the terminal’s RRC-idle state, RRC-idle state, RRC-connected state, or other states. In the connected state or other states, determine the measurement overhead caused by transmission resources with better channel quality.

With reference to the first aspect, in a possible implementation manner, the uplink communication includes one or more of the following: uplink data transmission, uplink control information transmission, preamble transmission, or uplink sounding reference signal transmission. Based on this possible implementation, the terminal can perform uplink data transmission, uplink control information transmission, preamble transmission, or uplink sounding reference signal transmission with network equipment according to the measurement results of one or more CSI-RSs. The communication performance of the uplink communication between the terminal and the network device can also improve the flexibility and diversity of the uplink communication between the terminal and the network device.

With reference to the first aspect or any possible implementation manner of the first aspect, in a possible implementation manner, the downlink communication includes downlink data reception, and/or downlink control information reception. Based on this possible implementation, the terminal can receive downlink data with the network device according to the measurement results of one or more CSI-RSs, and/or receive downlink control information and other downlink communications, thereby improving the relationship between the terminal and the network device. In addition to the communication performance of the downlink communication between the terminals, the flexibility and diversity of the downlink communication between the terminal and the network device can also be improved.

With reference to the first aspect or any possible implementation manner of the first aspect, in a possible implementation manner, the uplink communication or downlink communication with the network device is performed according to the measurement result of the one or more CSI-RSs, The method includes: obtaining a first resource including a first uplink resource or a first downlink resource according to a measurement result 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-RSs, and the first uplink resource can be used for uplink communication with the network device, or the first downlink resource can be used with the network device For downlink communication, because the CSI-RS measurement result can reflect the channel quality of the corresponding resource, when the terminal communicates with the network device, the communication performance between the terminal and the network device can be improved by using the first resource.

With reference to the first aspect or any possible implementation manner of the first aspect, in a possible implementation manner, the first resource includes one or more of time domain resources, frequency domain resources, space domain resources, or code domain resources. Kind. Based on this possible implementation, multiple resources such as time domain resources, frequency domain resources, space resources, or code domain resources can be determined according to the CSI-RS measurement results, and the time domain resources, frequency domain resources, space resources, or other resources can be used. One or more of the code domain resources 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 increased, and the terminal and the network device can be improved The flexibility of upstream communication or downstream communication.

With reference to the first aspect or any possible implementation manner of the first aspect, in a possible implementation manner, the method further includes: sending to the network device information related to the first resource and used to indicate the first resource Information. Based on this possible implementation manner, the terminal may 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 CSI-RS measurement result to the network device, In this way, the network device uses the first resource to communicate with the terminal according to the instruction of the terminal, so that the communication performance between the terminal and the network device can be improved.

With reference to the first aspect or any possible implementation manner of the first aspect, in a possible implementation manner, the use of the first resource to perform uplink communication or downlink communication with the network device includes: use under the first condition The first resource performs uplink communication or downlink communication with the network device, where the first condition includes one or more of the following: within the effective time period, after receiving an instruction from the network device to update the one Or before the update information of the configuration of the plurality of CSI-RSs, before receiving the measurement indication from the network device for indicating the measurement of the one or more CSI-RSs, or after the resource different from the first resource is measured prior to. Based on this possible implementation, the terminal can use the first resource and the first resource within a certain period of time, before obtaining the new CSI-RS configuration, before receiving the measurement indication of the network device, or before measuring a resource different from the first resource. The network device performs uplink communication or downlink communication. In this way, the terminal can use the same resource to communicate with the network device within a certain period of time. There is no need to frequently measure one or more CSI-RS to update the resources for communication, which reduces The measurement overhead of the terminal and the update frequency of the resource.

With reference to the first aspect or any possible implementation manner of the first aspect, in a possible implementation manner, the method further includes: receiving configuration information for configuring the one or more CSI-RSs from the network device . Based on this possible implementation, the CSI-RS can be configured by the network device to the terminal. Since the network device has a centralized management function for the terminal's communication situation, the terminal can measure more accurately based on the CSI-RS configured by the network device. Reflects the channel quality, which can improve the communication performance between the terminal and the network equipment.

With reference to the first aspect or any possible implementation manner of the first aspect, in a possible implementation manner, the configuration information is included in one of RRC dedicated information, random access response, paging message, or system information, or Many kinds. Based on this possible implementation manner, the terminal can receive configuration information from the network device through multiple types of information, which increases the diversity and flexibility of the terminal to obtain the configuration information.

With reference to the first aspect or any possible implementation manner of the first aspect, in a possible implementation manner, the uplink communication or downlink communication with the network device includes: in the RRC-inactive state and in the RRC-idle state Or in the RRC-connected state, perform the uplink communication or the downlink communication with the network device. Based on this possible implementation, the terminal can perform uplink with network equipment based on the measurement results of one or more CSI-RSs in the RRC-inactive state, in the RRC-inactive state, in the RRC-idle state, or in the RRC-connected state. For communication or downlink communication, since the CSI-RS measurement result can 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 better channel quality based on the CSI-RS measurement result In order to improve the communication performance between the terminal and the network device when the terminal is in the RRC-inactive state, it performs up and down communication or downlink communication with the network device on the transmission resource. 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 transitions to the RRC-idle state, the RRC-connected state, or other states, the terminal can also use the transmission resource Uplink or downlink communication with network equipment can improve the communication performance between the terminal and network equipment when the terminal is in the RRC-idle state, RRC-connected state or other states, and it can also reduce the terminal’s RRC-idle state, RRC-idle state, RRC-connected state, or other states. In the connected state or other states, determine the measurement overhead caused by transmission resources with better channel quality.

With reference to the first aspect or any possible implementation manner of the first aspect, in a possible implementation manner, in the RRC-inactive state, measuring one or more CSI-RS includes: in the RRC-inactive state, One or more of the reference signal received power, reference signal received quality, signal to interference plus noise ratio, or received signal strength indicator of the one or more CSI-RSs is measured. Optionally, for any CSI-RS of the one or more CSI-RSs, the CSI-RS's reference signal received power, reference signal received quality, signal to interference plus noise ratio, or received signal strength indicator One or more types can be used as the first parameter. Based on this possible implementation, the terminal can measure the CSI-RS reference signal received power, reference signal received quality, signal-to-interference plus noise ratio, or received signal strength indicator, etc. that can characterize channel quality in the RRC-inactive state. Or multiple related parameters can obtain the measurement result. In this way, the flexibility and diversity of CSI-RS measurement can be improved.

With reference to the first aspect or any possible implementation manner of the first aspect, in a possible implementation manner, obtaining the first resource according to the measurement result of the one or more CSI-RS includes: Among the multiple CSI-RSs, a resource corresponding to a CSI-RS with a higher first parameter is determined as the first resource. Based on this possible implementation, the resource corresponding to the CSI-RS with the higher first parameter among the one or more CSI-RSs can be determined as the first resource, because the CSI-RS measurement result can characterize the terminal and the network device The channel quality of the transmission resource corresponding to the CSI-RS. Therefore, the channel quality/communication quality of the first resource corresponding to the CSI-RS with the higher first parameter is better, so that the terminal uses the CSI with the higher first parameter. -The resource corresponding to the RS communicates with the network device, which can better improve the communication performance between the terminal and the network device.

In the second aspect, the embodiments of the present application provide a communication method, which may be executed by a network device or a component of the network device (for example, a processor, a chip, or a chip system, etc.). The method includes: sending one or more CSI-RSs for measurement in the RRC-inactive state to the terminal; performing uplink communication or downlink communication with the terminal, uplink communication or the downlink communication and one or more CSI-RS Corresponds to at least one CSI-RS.

In the method provided by the above second aspect, 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 communicate with the network device according to the measurement result. Perform uplink communication or downlink communication. 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, the transmission resource corresponding to a certain CSI-RS ( For example, the transmission resource corresponding to the CSI-RS with better channel quality) performs up and down communication or downlink communication with the terminal, so as to improve the communication performance between the network device and the terminal.

With reference to the second aspect, in a possible implementation manner, the uplink communication includes one or more of the following: uplink data reception, uplink control information reception, preamble detection, or uplink sounding reference signal reception. Based on this possible implementation, the network device and the terminal perform uplink communication corresponding to CSI-RS, uplink data reception, uplink control information reception, preamble detection, or uplink sounding reference signal reception, which improves the communication between the network device and the terminal. In addition to the communication performance of the uplink communication, the flexibility and diversity of the uplink communication between the network device and the terminal can also be improved.

With reference to the second aspect or any possible implementation manner of the second aspect, in a possible implementation manner, the downlink communication includes downlink data transmission, and/or downlink control information transmission. Based on this possible implementation, the network device can perform downlink data transmission corresponding to the CSI-RS with the 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. At the same time, it can also improve the flexibility and diversity of downlink communication between network equipment and terminals.

With reference to the second aspect or any possible implementation manner of the second aspect, in a possible implementation manner, the uplink communication or downlink communication is performed with the terminal, and the uplink communication or the downlink communication is connected to the one or more CSIs. -Corresponding to at least one CSI-RS in the RS includes: using a first resource corresponding to the at least one CSI-RS of the one or more CSI-RS to perform uplink communication or downlink communication with the terminal, wherein the first resource A 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 communicate with the terminal on the first downlink resource corresponding to at least one CSI-RS. The terminal performs downlink communication. Because the CSI-RS measurement result 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 CSI with better channel quality is used. -The first resource corresponding to the RS improves the communication performance between the network device and the terminal.

With reference to the second aspect or any possible implementation manner of the second aspect, in a possible implementation manner, the first resource includes one or more of time domain resources, frequency domain resources, space domain resources, or code domain resources. Kind. Based on this possible implementation, the network device can use multiple resources such as time domain resources, frequency domain resources, spatial resources, or code domain resources to perform uplink or downlink communication with the network device. In this way, it can be used to improve the connection between the network device and the terminal. Diversity of resources for uplink or downlink communication between network devices and terminals, and improve the flexibility of uplink or downlink communication between network devices and terminals.

With reference to the second aspect or any possible implementation manner of the second aspect, in a possible implementation manner, the method further includes: receiving information from the terminal that is related to the first resource and is used to indicate the first resource Information. 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 subsequently communicate with the terminal in uplink or downlink. The first resource can be used in the system, and the communication performance with the terminal can be improved.

With reference to the second aspect or any possible implementation manner of the second aspect, in a possible implementation manner, the using the first resource to perform uplink communication or downlink communication with the terminal includes: using the first resource under the first condition A resource performs uplink communication or downlink communication with the terminal, where the first condition includes one or more of the following: within the effective time period, sending instructions to the terminal to update the one or more CSI- Before the update information of the RS configuration, before sending a measurement instruction for indicating the measurement of the one or more CSI-RS to the terminal, or before obtaining a resource different from the first resource. Based on this possible implementation, the network device can use the CSI-RS configuration within a certain period of time, before sending a new CSI-RS configuration to the terminal, before sending a measurement instruction to the terminal, or before obtaining a resource different from the first resource. The first resource performs uplink communication or downlink communication with the terminal. In this way, the network device can use the same resource to communicate with the terminal within a certain fixed period of time without updating the resources used for communication, which reduces the frequency of resource update.

With reference to the second aspect or any possible implementation manner of the second aspect, in a possible implementation manner, the method further includes: sending configuration information for configuring the one or more CSI-RSs to the terminal. Based on this possible implementation, the network device can send configuration information to the terminal. Since the network device has a centralized management function for the terminal's communication situation, the CSI-RS configured by the network device can make the terminal measure the CSI-RS more accurate. Reflects the channel quality, thereby improving the communication performance between the terminal and the network equipment.

With reference to the second aspect or any possible implementation manner of the second aspect, in a possible implementation manner, the configuration information is included in one of RRC dedicated information, random access response, paging message, or system information, or Many kinds. Based on this possible implementation manner, the network device can send 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.

In the third aspect, an embodiment of the present application provides a communication device that can implement the foregoing first aspect or any one of the possible implementation methods of the first aspect. The device includes corresponding units or components for performing the above-mentioned methods. The units included in the device can be implemented in software and/or hardware. The device may be, for example, a terminal, or a chip, a chip system, or a processor that can support the terminal to implement the foregoing method.

In a fourth aspect, an embodiment of the present application provides a communication device, which can implement the foregoing second aspect or the method in any possible implementation manner of the second aspect. The device includes corresponding units or components for performing the above-mentioned methods. The units included in the device can be implemented in software and/or hardware. The device may be, for example, a network device, or a chip, a chip system, or a processor that can support the network device to implement the foregoing method.

In a fifth aspect, an embodiment of the present application provides a communication device, including: a processor, the processor is coupled with a memory, the memory is used to store a program or an instruction, when the program or an instruction is executed by the processor , So that the device implements the method described in the foregoing first aspect or any one of the possible implementation manners of the first aspect.

In a sixth aspect, an embodiment of the present application provides a communication device, including: a processor, the processor is coupled with a memory, the memory is used to store a program or an instruction, when the program or an instruction is executed by the processor , So that the device implements the method described in the second aspect or any one of the possible implementation manners of the second aspect.

In a seventh aspect, an embodiment of the present application provides a communication device, which is configured to implement the foregoing first aspect or the method described in any one of the possible implementation manners of the first aspect.

In an eighth aspect, an embodiment of the present application provides a communication device, which is configured to implement the foregoing second aspect or the method described in any one of the possible implementation manners of the second aspect.

In a ninth aspect, an embodiment of the present application provides a computer-readable medium on which a computer program or instruction is stored. When the computer program or instruction is executed, the computer executes the first aspect or any one of the first aspects. The method described in the embodiment.

In a tenth aspect, an embodiment of the present application provides a computer-readable medium on which a computer program or instruction is stored. When the computer program or instruction is executed, the computer executes the second aspect or any one of the second aspects described above. The method described in the embodiment.

In an eleventh aspect, an embodiment of the present application provides a computer program product, which includes computer program code that, when run on a computer, causes the computer to execute the first aspect or any of the possible aspects of the first aspect. The method described in the implementation mode.

In a twelfth aspect, an embodiment of the present application provides a computer program product, which includes computer program code, and when the computer program code runs on a computer, the computer executes the above-mentioned second aspect or any of the possible aspects of the second aspect. The method described in the implementation mode.

In a thirteenth aspect, an embodiment of the present application provides a chip, including: a processor, the processor is coupled with a memory, the memory is used to store a program or an instruction, when the program or instruction is executed by the processor , So that the chip implements the method described in the foregoing first aspect or any one of the possible implementation manners of the first aspect.

In a fourteenth aspect, an embodiment of the present application provides a chip, including: a processor, the processor is coupled with a memory, the memory is used to store a program or instruction, when the program or instruction is executed by the processor , So that the chip implements the method described in the second aspect or any one of the possible implementation manners of the second aspect.

In a fifteenth aspect, an embodiment of the present application provides a communication system. The system includes the device described in the third aspect and/or the device described in the fourth aspect, or the system includes the device described in the fifth aspect and/or the device described in the sixth aspect, or the system It includes the device described in the seventh aspect and/or the device described in the eighth aspect. It can be understood that any communication device, chip, computer readable medium, computer program product, or communication system provided above are all used to execute the corresponding method provided above, and therefore, the beneficial effects that can be achieved can be Refer to the beneficial effects in the corresponding method, which will not be repeated here.

Description of the drawings

FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the application;

Figures 2-9 are schematic flowcharts of communication methods provided by embodiments of this application;

FIG. 10 is a schematic structural diagram of a device provided by an embodiment of this application;

FIG. 11 is a schematic structural diagram of a terminal provided by an embodiment of the application;

FIG. 12 is a schematic structural diagram of another device provided by an embodiment of this application.

Detailed ways

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

The method provided in the embodiments 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 (wireless-fidelity, WiFi) system, and a third-generation partnership plan (3rd generation partnership project, 3GPP) related communication systems and future evolving communication systems, etc., are not restricted. The following only takes the communication system 10 shown in FIG. 1 as an example to describe the method provided in the embodiment of the present application.

As shown in FIG. 1, it is a schematic diagram of the architecture of a communication system 10 provided by an embodiment of this application. In FIG. 1, 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. FIG. 1 is only a schematic diagram, and does not constitute a limitation on the applicable scenarios of the technical solutions provided in this application.

The network device 101 may be any device with a wireless transceiving function. Including but not limited to: evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional NodeB), base station in NR (gNodeB or gNB) or transmission receiving point/transmission reception point (TRP), 3GPP Subsequent evolution of base stations, access nodes in the WiFi system, wireless relay nodes, wireless backhaul nodes, etc. The base station can be: a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station, etc. Multiple base stations can support networks of the same technology mentioned above, or networks of different technologies mentioned above. The base station can contain one or more co-site or non-co-site TRPs. The network device may 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 description takes the network device as a base station as an example. The multiple network devices may be base stations of the same type, or base stations of different types. The base station can communicate with the terminal, and it can also communicate with the terminal through a relay station. The terminal can communicate with multiple base stations of different technologies. For example, the terminal can communicate with a base station that supports an LTE network, can also communicate with a base station that supports a 5G network, and can also support dual connections with a base station of an LTE network and a base station of a 5G network. .

The terminal 102 is a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on the water (such as ships, etc.); it can also be deployed in the air (such as airplanes, airplanes, etc.). Balloons and satellites are classy). The terminal may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver function, virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, industrial control (industrial control) Control), in-vehicle terminal equipment, unmanned driving (self-driving) terminal, assisted driving terminal, remote medical (remote medical) terminal, smart grid (smart grid) terminal, transportation safety ( Terminals in transportation safety, terminals in smart cities, terminals in smart homes, etc. The embodiments of this application do not limit the application scenarios. Terminals can sometimes be 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. The terminal can be fixed or mobile.

As an example and not a limitation, in this application, the terminal may be a wearable device. Wearable devices can also be called wearable smart devices. It is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets and smart jewelry for physical sign monitoring.

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

The communication system 10 shown in FIG. 1 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 a 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, which is not limited.

In the communication system 10 shown in FIG. 1, the terminal 102 may be in the RRC-connected state, the RRC-idle state, or the RRC-inactive state. Among them, the RRC-connected state can be replaced with the RRC-connected state, the RRC connected state, the first state, the first state, or other names that can indicate that the terminal is in the RRC-connected state. The RRC-idle state can be replaced with the RRC-idle state, the RRC idle state, the second state, the second state, or other names that can indicate that the terminal is in the RRC-idle state. The RRC-inactive state can be replaced with the RRC-inactive state, the RRC inactive state, the third state, the third state, or other names that can indicate that the terminal is in the RRC-inactive state, etc., without limitation.

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 state -connected state or RRC-idle state. The specific process of the terminal 102 transitioning in the RRC-connected state, the RRC-idle state, and the RRC-inactive state may be as follows:

When the terminal 102 is in the RRC-connected state, the network device 101 can change the state of the terminal 102 from the RRC-connected state to the RRC-idle state or the RRC-inactive state through the radio resource control connected (RRC) release process . For example, the network device 101 sends to the terminal 102 an RRC release (RRC release) message 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 its connection with the network device 101. The RRC connection between the two switches to the RRC-idle state or the RRC-inactive state.

When the terminal 102 is in the RRC-idle state, the terminal 102 can change 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 receiving the paging message from the network device 101, the terminal 102 initiates the RRC establishment process to the network device 101, or the upper layer of the terminal 102 triggers the RRC establishment process, and the terminal 102 Attempt 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 (RRC setup request) message to the network device 101; the network device 101 receives the RRC setup request message from the terminal 102 and sends it to The terminal 102 sends an RRC setup (RRC setup) message, so that after receiving the RRC setup message, the terminal 102 changes its state to the RRC-connected state; or, the network device 101 sends an RRC reject (RRC reject) message to the terminal 102 so that the terminal 102 After receiving the RRC rejection message, 102 continues to stay in the RRC-idle state.

When the terminal 102 is in the RRC-inactive state, the terminal 102 can change the state of the terminal 102 from the RRC-inactive state to the RRC-connected state through an RRC establishment or RRC resume (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 upper layer of the terminal 102, and the terminal 102 attempts to recover and network The RRC connection between the devices 101 enters 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 (RRC resume request) message to the network device 101; the network device 101 receives the RRC resume request message from the terminal 102 and sends it to the terminal 102 sends an RRC setup (RRC setup) message or an RRC resume (RRC resume) message, 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 (RRC reject) message to the terminal 102, so that the terminal After 102 receives the RRC rejection message, it continues to stay in the RRC-inactive state. In addition, when the terminal 102 is in the RRC-inactive state, the network device 101 can change 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 (RRC release) message to the terminal 102, so that the terminal 102 changes from the RRC-inactive state to the RRC-idle state after receiving the RRC release message.

Wherein, 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 range of the network device 101. The network device 101 and the terminal 102 may perform data channel and/or control channel transmission. For example, the network device 101 may send a physical downlink control channel (PDCCH) specific to the terminal 102 and/or a physical downlink shared channel (PDSCH) specific to the terminal 102 to the terminal 102, and the terminal 102 may also Send a physical uplink shared channel (PUSCH) specific to the terminal 102 and/or a physical uplink control channel (PUCCH) specific to the terminal 102 to the network device 101. The core network device (not shown in FIG. 1) 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.

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 area of the network device 101 or whether it is within the management range of the network device 101. The terminal 102 can receive one or more of paging messages, synchronization signals, broadcast messages, or system information from the network device 101. However, the terminal 102 cannot perform unicast data transmission with the network device 101. For example, the terminal 102 The terminal 102 specific PDSCH and PDCCH from the network device 101 cannot be received, 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 covered or managed, and the core network device does not know which network device can locate or find the terminal 102.

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 range of the network device 101 or whether it is within the management range of the network device 101. The terminal 102 may 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 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.

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. However, the terminal 102 Unable to 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 receiving one or more of paging messages, synchronization signals, broadcast messages, and system information from the network device 101 , It is also possible to perform unicast data transmission with the network device 101.

For example, the network device 101 may send one or more synchronization signal blocks (SSB) to the terminal 102; the terminal 102 in the RRC-idle state or the RRC-inactive state may measure the one or more SSBs, according to The measurement result of the one or more SSBs obtains the second resource, and the paging message, the system information block (SIB) from the network device 101 is received through the second resource, or the uplink random access is performed.

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

In order to solve the above-mentioned problem, an embodiment of the present application provides a communication method. For the specific process of the communication method, reference may be made to the description in the corresponding embodiments shown in FIG. 2 to FIG. 9 below. With this method, the terminal can measure one or more CSI-RSs in the RRC-inactive state, and according to the measurement results of one or more CSI-RSs, communicate with the network device with at least one of the one or more CSI-RSs. The uplink communication or downlink communication corresponding to the CSI-RS to improve the communication performance between the terminal and the network device.

Optionally, each network element in FIG. 1 (for example, the network device 101 or the terminal 102, etc.) can be implemented by one device, or can be implemented by multiple devices, or can be a functional module in one device. This application implements The example does not make specific restrictions on this. It is understandable that the above functions may be network elements in hardware devices, software functions running on hardware, or virtualization functions instantiated on a platform (for example, a cloud platform).

The communication method provided by the embodiment of the present application will be described in detail below.

It is understandable 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 just an example, and other names may also be used in specific implementations. This is the case in the embodiments of the present application. There is no specific limitation.

It is understandable that in the embodiments of the present application, the terminal or the 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, each step may be executed in a different order presented in the embodiment of the present application, and it may not be necessary to perform all the steps in the embodiment of the present application.

The physical resources in this application can also be referred to as resources for short, and can also be referred to as transmission resources. The physical resources may include one or more of time domain resources, frequency domain resources, code domain resources, or space domain resources. For example, the time domain resource included in the physical resource may include at least one frame, at least one sub-frame, at least one slot, at least one mini-slot, and at least one time unit. , Or at least one time domain symbol, etc. For example, the frequency domain resources included in the physical resource may include at least one carrier (carrier), at least one component carrier (CC), at least one bandwidth part (BWP), and at least one resource block group (resource block group). block group, RBG), at least one physical resource-block group (PRG), at least one resource block (resource block, RB), or at least one sub-carrier (sub-carrier, SC), etc. For example, the airspace 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/space layer, or the like. For example, the code domain resources included in the physical resources may include at least one orthogonal cover code (OCC), or at least one non-orthogonal multiple access (NOMA) code, and so on.

It is understandable that the above-mentioned physical resources may be physical resources of the baseband, and the physical resources of the baseband may be used by the baseband chip. The aforementioned physical resources may also be physical resources of the air interface. The aforementioned physical resources may also be intermediate frequency or radio frequency physical resources.

As shown in FIG. 2, a communication method provided by an embodiment of this application, the communication method includes step 201 to step 203.

Step 201: The network device sends one or more CSI-RS to the terminal.

Wherein, the network device may be the network device 101 in FIG. 1 or a component in the network device 101 in FIG. 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., which is not limited.

Wherein, the terminal may be any terminal 102 in the RRC-inactive state in FIG. 1, or may 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., which is not limited.

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

The downlink resource can be used for downlink communication between the terminal and the network device, and the uplink resource can be used for the uplink communication between the terminal and the network device. There may be a correspondence between downlink resources and uplink resources. In the embodiment of the present application, the corresponding relationship between the uplink resource and the downlink resource may be predefined, or may be configured by the network device for the terminal.

In the embodiment of this application, one or more downlink resources and/or uplink resources corresponding to one or more CSI-RS may be included in a resource pool. The resource pool may be predefined or used by a network device as a terminal. Configured. When the resource pool includes one or more uplink resources, or when the one or more CSI-RS corresponds to one or more uplink resources, the resource pool may be configured grant (CG) or It is understood that the resources included in the resource pool can be used for uplink grant free (GF) transmission.

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

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

Manner 1: The network device periodically sends one or more CSI-RS to the terminal.

Wherein, 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 every certain time period/periodically/regularly. The period for the network device to send one or more CSI-RSs to the terminal may be pre-defined 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.

Manner 2: The network device sends one or more CSI-RS to the terminal aperiodically.

Among them, the non-periodically sending one or more CSI-RS to the terminal by the network device may refer to the non-periodically sending one or more CSI-RS to the terminal by the network device, or when the network device satisfies a certain trigger condition, the One or more CSI-RS.

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 may 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., and there is no restriction. For example, after sending a paging message or downlink data to the terminal, the network device sends one or more CSI-RS to the terminal.

Manner 3: The network device semi-continuously sends one or more CSI-RS to the terminal.

Wherein, the network device semi-continuously sending one or more CSI-RS to the terminal may mean that the network device periodically sends one or more CSI-RS to the terminal after meeting the trigger condition.

Wherein, the trigger condition is as described in the second manner, and after the trigger condition is met, the period of sending one or more CSI-RSs to the terminal is as described in the first manner, and will not be repeated.

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

Step 202: The terminal measures the one or more CSI-RS.

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

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

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 (signal to interference) plus noise ratio, SINR) or received signal strength indicator (RSSI).

Optionally, the CSI-RS measurement result may indicate the channel quality of the downlink resource between the terminal corresponding to the CSI-RS and the network device. The higher the value of the CSI-RS measurement result, the higher the CSI-RS measurement result indicates the terminal and network corresponding to the CSI-RS. The better the channel quality of downlink resources and/or uplink resources between devices, the lower the value of the CSI-RS measurement result, which indicates the channel quality of downlink resources and/or uplink resources between the terminal corresponding to the CSI-RS and the network device The lower.

Optionally, the terminal determines the measurement result of the CSI-RS according to the first parameter of the CSI-RS, including: when the terminal obtains a first parameter of the CSI-RS through measurement, the terminal may use the first parameter as the measurement of the CSI-RS Result: When the terminal measures multiple first parameters of the CSI-RS, in order to improve the accuracy of the CSI-RS measurement results, the terminal may perform weighting/filtering processing on the multiple first parameters to obtain the CSI-RS measurement results .

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

For another example, before the terminal performs uplink communication or downlink communication with the network device, if the network device periodically/non-periodically/semi-continuously sends one or more CSI-RS to the terminal multiple times, the terminal may repeatedly Measure one or more first parameters of CSI-RS. For each CSI-RS, taking the first parameter as RSRP as an example, the terminal can perform multiple measurements on the CSI-RS to obtain multiple RSRPs of the CSI-RS, and perform weighting/filtering processing on the multiple RSRPs of the CSI-RS Obtain CSI-RS measurement results.

Wherein, when performing weighting/filtering processing on multiple first parameters of the CSI-RS, the weight/filter coefficient corresponding to each first parameter is the same or different. Exemplarily, the weight/filter coefficient corresponding to the first parameter obtained by the previous measurement is smaller than the weight/filter coefficient corresponding to the first parameter measured by the subsequent measurement.

For example, taking the CSI-RS parameter as RSRP as an example, the time when the multiple RSRPs of the CSI-RS are weighted/filtered is the reference point. The farther away from the time, the smaller the weight/filter coefficient of the RSRP. . 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 terminal is in the third cycle , i.e. the time that the CSI-RS 3 measured RSRP of RSRP3, due to the order in time of: the time 3> time 2> time 1, the RSRP3 weight / weight filter coefficients w ₃ ≥RSRP2 weight / filter coefficient w ₂ ≥ The weight/filter coefficient w _{1 of} RSRP1, the measurement result of CSI-RS satisfies: RSRP1*w ₁ +RSRP2*w ₂ +RSRP3*w ₃ .

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

According to the measurement results of one or more CSI-RS, the terminal performs uplink communication or downlink communication with the network device. 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 is related to the one Or at least one CSI-RS of the multiple CSI-RS corresponds.

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

Optionally, the terminal in the RRC-inactive state may, after receiving the paging message sent by the network device for paging the terminal, perform uplink communication with the network device according to the measurement results of one or more CSI-RSs or Downlink communication; or, after being triggered by a higher layer of the terminal, perform uplink communication or downlink communication with the network device according to the measurement result of one or more CSI-RS.

Among them, the paging message is used for paging the terminal by the network device. For example, the paging message is used to indicate that the network device and the terminal will perform uplink communication or downlink communication; or, the paging message is used to indicate that the terminal changes from the RRC-inactive state or the RRC-idle state to the RRC-connected state. Optionally, the upper layer of the terminal may include a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, or a radio link control (RLC) layer. One or more of the layers.

Optionally, the terminal performing uplink communication or downlink communication with the network device according to the measurement result of one or more CSI-RS may include: the terminal obtains the first resource according to the measurement result of the one or more CSI-RS, and Use the first resource to perform uplink communication or downlink communication with the network device.

Wherein, the first resource may include a first uplink resource or a first downlink resource. The first uplink resource may include one or more of time-domain resources, frequency-domain resources, space-domain resources, or code-domain resources, and the first downlink resource may include time-domain resources, frequency-domain resources, space-domain resources, or code-domain resources. One or more of them are not limited. Optionally, there is a correspondence between the first uplink resource and the first downlink resource, and the correspondence between the first uplink resource and the first downlink resource may be predefined or configured by a network device.

Wherein, when the terminal performs uplink communication with the network device, the first resource includes the first uplink resource.

In a possible implementation manner, the first uplink resource corresponds to a resource corresponding to a CSI-RS with a higher value of a measurement result in one or more CSI-RSs, and may also correspond to a resource in one or more CSI-RSs. A resource corresponding to a CSI-RS corresponds. Exemplarily, if one CSI-RS corresponds to one downlink resource, the first uplink resource corresponds to the downlink resource corresponding to the CSI-RS with the higher value of the measurement result among one or more CSI-RSs, and may also correspond to one or The downlink resource corresponding to one CSI-RS among the multiple CSI-RSs is corresponding, which is not limited. For example, after the terminal determines from one or more CSI-RSs the downlink resource corresponding to the CSI-RS with the higher value of the measurement result, it may determine the first uplink resource according to the downlink resource, and the first uplink resource and the There is a corresponding relationship for downlink resources.

In another possible implementation manner, one CSI-RS corresponds to one uplink resource, or one CSI-RS corresponds to one uplink resource and one downlink resource, and the first uplink resource includes one or more CSI-RS measurement results. The uplink resource corresponding to the CSI-RS with a higher value, or the first uplink resource includes the uplink resource corresponding to one of the one or more CSI-RSs, which is not limited. For example, the terminal determines the uplink resource corresponding to the CSI-RS with the higher value of the measurement result from one or more CSI-RS, and may determine the uplink resource as the first uplink resource.

When the terminal performs downlink communication with the network device, the first resource includes the first downlink resource.

In a possible implementation manner, the first downlink resource corresponds to a resource corresponding to a CSI-RS with a higher value of a measurement result in one or more CSI-RSs, and may also correspond to a resource in one or more CSI-RSs. One of the CSI-RS corresponding resources corresponds to. Exemplarily, if one CSI-RS corresponds to one downlink resource, or if one CSI-RS corresponds to one downlink resource and uplink resource, the first downlink resource includes one or more CSI-RS measurement results. The downlink resource corresponding to the high CSI-RS, or the first downlink resource includes a downlink resource corresponding to one CSI-RS in one or more CSI-RSs, which is not limited. For example, the terminal determines the downlink resource corresponding to the CSI-RS with the higher value of the measurement result from one or more CSI-RSs, and may determine the downlink resource as the first downlink resource.

In another possible implementation manner, one CSI-RS corresponds to one uplink resource, and the first downlink resource corresponds to the uplink resource corresponding to the CSI-RS whose measurement result is higher among one or more CSI-RSs. , It can also correspond to the uplink resource corresponding to one CSI-RS in one or more CSI-RSs, which is not limited. For example, after the terminal determines the uplink resource corresponding to the CSI-RS with the higher value of the measurement result from one or more CSI-RS, it may determine the first downlink resource according to the uplink resource, and the first downlink resource There is a corresponding relationship with the uplink resource.

Among them, for the terminal, uplink communication may include one or more of the following: uplink data transmission, uplink control information transmission, preamble transmission, or uplink sounding reference signal (SRS) transmission. Exemplarily, the terminal using the first uplink resource to perform uplink communication with the network device may include the following cases (1.1) to (1.6):

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

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

Optionally, when the terminal uses the first uplink resource to send uplink data to the network device, it sends a demodulation reference signal (DMRS) to the network device, and the sequence and/or resource of the DMRS corresponds to the first downlink resource Relationship, so that when the network device receives the uplink data from the terminal, it can obtain the sequence and/or resource of the DMRS, obtain the first downlink resource according to the sequence and/or resource of the DMRS, and compare it with the first downlink resource. The terminal performs downlink communication.

Further, in order for the network device to learn that the resource used to transmit uplink data is the first uplink resource, or, to make the network device learn the downlink resource for downlink communication with the terminal, the terminal may send the uplink data to the network device when sending the uplink data to the network device. The device sends information related to the first resource to indicate to the network device the resource used for uplink data transmission or the downlink resource used for downlink communication with the terminal. Wherein, 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.

Wherein, the information related to the first uplink resource may be used to indicate the first uplink resource. For example, the information related to the first uplink resource may include the identifier of the CSI-RS corresponding to the first uplink resource or the information of the first uplink resource. Logo. The CSI-RS identifier may be used to identify the CSI-RS, and the CSI-RS identifier may 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 may be used to indicate the first uplink resource, and the identifier of the first uplink resource may be the index or number of the first uplink resource, etc., which is not limited.

Wherein, 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 the identity of the CSI-RS corresponding to the first downlink resource or the identity 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 the index or number of the first downlink resource, etc., which is not limited.

Exemplarily, taking the information related to the first downlink resource including the identifier of the CSI-RS corresponding to the first downlink resource as an example, when the network device receives the identifier CSI-RS ID1 corresponding to CSI-RS1, the network device The first downlink resource corresponding to CSI-RS ID1, namely downlink resource 1, can be obtained according to CSI-RS ID1, and downlink communication is performed with the terminal through downlink resource 1, where the CSI-RS identifier and the first downlink resource (or There is a corresponding relationship between the identifier of the first downlink resource, and the corresponding relationship between the identifier of the CSI-RS and the identifier of the first downlink resource (or the identifier of the first downlink resource) may be as shown in Table 1. Subsequently, the network device may also obtain the first uplink resource corresponding to downlink resource 1, namely uplink resource 1, according to downlink resource 1, and perform uplink communication with the terminal through uplink resource 1, where the first downlink resource (or first downlink resource) There is a corresponding relationship between the identifier of the resource and the first uplink resource (or the identifier of the first uplink resource), the first downlink resource (or the identifier of the first downlink resource) and the identifier of the first uplink resource (or the identifier of the first uplink resource) The corresponding relationship of) can be shown in Table 2.

Table 1

CSI-RS的标识CSI-RS identification	下行资源Downlink resources
CSI-RS ID1CSI-RS ID1	下行资源1Downlink resource 1
CSI-RS ID2CSI-RS ID2	下行资源2Downlink resource 2
CSI-RS ID3CSI-RS ID3	下行资源3Downlink resource 3

Table 2

下行资源Downlink resources	上行资源Uplink resources
下行资源1Downlink resource 1	上行资源1Uplink resource 1
下行资源2Downlink resource 2	上行资源2Uplink resource 2
下行资源3Downlink resource 3	上行资源3Uplink resource 3

It is understandable that the foregoing 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, which is not limited. .

It can be understood that the foregoing Table 2 is only an example of the correspondence relationship between the first downlink resource and the first uplink resource, and the correspondence relationship between the first downlink resource and the first uplink resource may also be in other forms and is not limited.

Optionally, when the first resource is different from the fourth resource, indicate the first resource to the network device, where 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 The 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.

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

The uplink control information may be physical (PHY) layer uplink control information, media access control (media access control, MAC) layer uplink control information, or RRC layer uplink control information. The PHY layer uplink control information may also be referred to as uplink control information (uplink control information, UCI), and the UCI may be carried in the PUCCH.

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.

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

Optionally, in order for the network device to learn that the resource used to transmit the uplink control information is the first uplink resource, or to make the network device learn the downlink resource for downlink communication with the terminal, the terminal may send the uplink control information to the network device , Sending information related to the first resource to the network device, so as to indicate to the network device the resource used for transmitting the uplink control signal or the downlink resource for performing downlink communication with the terminal. Among them, the information related to the first resource can refer to the above situation (1.1), and will not be repeated.

In case (1.3), the terminal uses the first uplink resource to send a preamble (also referred to as a preamble for short) to the network device.

Among them, the preamble is used to initiate a random access request to the network device. In the case (1.3), the first uplink resource may be referred to as a preamble transmission resource, a preamble transmission resource, or a preamble resource.

Among them, the terminal uses the first uplink resource to send the preamble to the network device, which can be applied to the 4-step random access procedure (random access channel procedure, RACH procedure) initiated by the terminal, and it can also be applied to the 2-step random access procedure initiated by the terminal. There are no restrictions during the entry process. The 2-step random access process can mean that the terminal completes random access through two signaling interactions with the network equipment. The 4-step random access process can mean that the terminal completes random access through four signaling interactions with the network equipment.

Optionally, the sequence and/or resource of the preamble has a corresponding relationship with the first downlink resource, and subsequently, after detecting the preamble, the network device may obtain the first downlink resource according to the sequence and/or resource of the preamble , And perform downlink communication with the terminal on the first downlink resource.

Optionally, in order for the network device to learn that the resource used to transmit the preamble is the first uplink resource, or to make the network device learn the downlink resource for downlink communication with the terminal, the terminal may send the preamble to the network device when sending the preamble to the network device. The network device sends information related to the first resource to indicate the first uplink resource or downlink resource for downlink communication with the terminal to the network device. Among them, the information related to the first resource can refer to the above situation (1.1), which will not be repeated.

Alternatively, in case (1.3), the network device may send one or more SSBs to the terminal, and the terminal measures one or more SSBs, determines the second resource based on the measurement result of the SSB, and communicates with the network device through the second resource Perform uplink communication or downlink communication. Wherein, 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 according to the measurement result of the SSB, and sends the preamble to the network device on the second uplink resource. Subsequently, the network device After receiving the preamble on the second uplink resource, the second downlink resource corresponding to the second uplink resource can be determined according to the second uplink resource, and the second downlink resource can be used to perform downlink communication with the terminal.

In case (1.4), the terminal can use the first uplink resource to send uplink data and preamble to the network device.

Wherein, in the case (1.4), the first uplink resource may be referred to as a preamble transmission resource or a preamble transmission resource.

Optionally, in order for the network device to learn that the resource used to transmit the preamble is the first uplink resource, or for the network device to learn the downlink resource for downlink communication with the terminal, the terminal may send the uplink data and the preamble to the network device. At this time, the information related to the first resource is sent to the network device to indicate the first uplink resource or the downlink resource for downlink communication with the terminal to the network device. Among them, the information related to the first resource can refer to the above situation (1.1), which will not be repeated.

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

Among them, SRS is used for network equipment to measure the channel quality of uplink resources. In the case (1.5), the first uplink resource may be referred to as SRS transmission resource or SRS transmission resource.

Optionally, in order for the network device to learn that the resource used to transmit SRS is the first uplink resource, or to make the network device learn the downlink resource for downlink communication with the terminal, the terminal may send the SRS to the network device when sending the SRS to the network device. The information related to the first resource is sent to indicate the first uplink resource or the downlink resource for downlink communication with the terminal to the network device. Among them, the information related to the first resource can refer to the above situation (1.1), which will not be repeated.

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

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

Among them, 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):

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

Among them, the downlink data can 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 PDSCH.

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

Among them, 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 referred to as downlink control information (downlink control information, DCI), and the DCI may be carried in the PDCCH.

In the 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.

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

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

Optionally, after the terminal completes the uplink communication or the downlink communication, the transmission process can be ended, that is, at this time, the terminal does not perform uplink communication or downlink communication with the network device, but monitors the SSB and/or paging message.

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

Among them, for network equipment, 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 terminal Or, the network device can use the first uplink resource to receive uplink data from the terminal and/or detect the preamble from the terminal; or, the network device can use the first uplink resource to receive the SRS from the terminal; or, the network The device may use the first uplink resource to receive uplink data and uplink control information from the terminal.

Wherein, the network device detecting the preamble from the terminal may include: the network device estimates the transmission delay of the terminal according to the preamble, and calibrates the uplink timing according to the transmission delay.

Optionally, the network device uses the first uplink resource to receive the DMRS from the network device when receiving the uplink data from the terminal. The sequence and/or resource of the DMRS corresponds to the first downlink resource, and the network device obtains the DMRS The first downlink resource is obtained according to the sequence and/or resource of the DMRS, and subsequently, the network device may perform downlink communication with the terminal on the first downlink resource.

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 may be in the first uplink resource. Perform downlink communication with the terminal on a downlink resource. There is a corresponding relationship between the sequence of the preamble and/or the first uplink resource and the first downlink resource.

Optionally, the network device may also receive information related to the first resource from the terminal. Among them, the information related to the first resource can refer to the above situation (1.1), which will not be repeated.

Among them, for the network device, the 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 , Send downlink control information and downlink data to the terminal.

Based on the method shown in Figure 2, the network device can send one or more CSI-RS to the terminal, and the terminal receives one or more CSI-RS from the network device, and in the RRC-inactive state, measures one or more CSI-RS -RS, and according to the measurement results of one or more CSI-RS, uplink communication or downlink communication with the network equipment, because the CSI-RS measurement results can more accurately characterize the relationship between the terminal and the network equipment and the CSI-RS The channel quality of the corresponding transmission resource. Therefore, the terminal can select a transmission resource with better channel quality according to the CSI-RS measurement result, and perform up and down communication or downlink communication with the network device on the transmission resource, thereby improving the terminal’s position In the RRC-inactive state, the communication performance between the terminal and the network device. At the same time, the method described in Figure 2 can determine the transmission resource with better transmission resource quality for the terminal. Subsequently, when the terminal transitions to the RRC-idle state, the RRC-connected state or other states, the terminal can also use the transmission resource Uplink or downlink communication with network equipment can improve the communication performance between the terminal and network equipment when the terminal is in the RRC-idle state, RRC-connected state or other states, and it can also reduce the terminal’s RRC-idle state, RRC-idle state, RRC-connected state, or other states. In the connected state or other states, determine the measurement overhead caused by transmission resources with better channel quality.

Further optionally, as shown in FIG. 3, the method shown in FIG. 2 further includes an optional step 301.

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

Among them, the configuration information can be used to configure one or more CSI-RSs. The configuration information may be referred to as CSI-RS configuration information.

The configuration information may include the configuration of the CSI-RS, or the configuration information may include the identification of the CSI-RS configuration, and the identification of the CSI-RS configuration may include the number of the CSI-RS configuration or the index of the CSI-RS configuration.

Wherein, the CSI-RS configuration may include CSI-RS resource configuration, such as: one or more of CSI-RS time domain resources, frequency domain resources, space domain resources, or code domain resources, so that the terminal can, according to the configuration information, One or more CSI-RSs are measured on time domain resources, frequency domain resources, space domain resources or code domain resources corresponding to one or more CSI-RSs. The configuration of the CSI-RS may also include the uplink resource configuration of the resource corresponding to the CSI-RS, or the downlink control resource set (CORESET) configuration of the resource corresponding to the CSI-RS, and other information, which is not limited.

Optionally, when the configuration information includes the CSI-RS configuration, the configuration information may be included in one of RRC dedicated information, random access response (RAR)/message B (message B), or paging message. Send to the terminal in the seed. Among them, RAR/message B is the response to the preamble.

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

Among them, RRC-specific information can also be understood as terminal-specific information, or terminal-level information, or terminal-specific information, and so on. The RRC dedicated information can be carried by RRC dedicated signaling or RRC dedicated messages. For example, the RRC-specific information may be carried by one or more of terminal-specific resource configuration messages, RRC release messages, RRC setup messages, RRC recovery messages, or RRC reject messages.

Exemplarily, the network device may send RRC dedicated information to the terminal, where the RRC dedicated information includes the configuration information. For example, the network device sends an RRC release message to the terminal, where the RRC release message includes the configuration of the one or more CSI-RSs. Exemplarily, the network device sends RAR/message B to the terminal, where 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-RSs.

Among them, the system information may be carried by a system information block (SIB). Optionally, the corresponding relationship between the CSI-RS configuration and the CSI-RS configuration identifier is carried by the SIB, and the terminal may obtain the corresponding relationship between the CSI-RS configuration and the CSI-RS configuration identifier from the SIB. For example, the network device sends an RRC release message to the terminal, where the RRC release message includes one or more CSI-RS configuration numbers; the network device sends a SIB to the terminal, and the SIB includes the CSI-RS configuration and the CSI-RS After receiving the SIB, the terminal determines the configuration of one or more CSI-RSs according to the configuration identifiers of one or more CSI-RSs.

Optionally, the network device sends the configuration information to the terminal through the fourth resource. This process can refer to the introduction in the method shown in Figure 7 below.

Further optionally, when the network device and the terminal perform downlink communication/uplink communication, the communication environment between the network device and the terminal may change. For example, a resource with a good channel quality becomes a poor channel quality. Inferior resources become better channel quality. In order to adapt to changes in 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 to update the configuration of one or more CSI-RSs, so that after receiving the update information, the terminal measures the one or more CSI-RSs according to the update information. The measurement indication is used to instruct the terminal to measure the one or more CSI-RS.

Exemplarily, when the network device sends downlink data to the terminal, the update information or measurement instruction is sent. 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 instruction to the terminal.

Exemplarily, the network device may send the update information or measurement instruction when sending the downlink control information to the terminal. For example, the network device sends downlink control information to the terminal, where the downlink control information includes the update information or the measurement indication.

Exemplarily, the network device may send the update information or measurement instruction 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.

Exemplarily, the network device may send the update information or 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.

Optionally, the network device uses the first resource to perform uplink communication or downlink communication with the terminal under the first condition. The first condition includes one or more of the following: within the valid time period, before sending update information to the terminal, before sending a measurement instruction to the terminal, or before obtaining a resource different from the first resource. In this way, the network device can use the first resource within a certain period of time (for example, within the effective duration), or before acquiring a new resource, or before sending a measurement instruction to the terminal, or before acquiring a resource different from the first resource. The communication performance between the terminal and the network device is improved, without the need to frequently send one or more CSI-RS and the configuration of one or more CSI-RS to the terminal, thereby reducing network overhead.

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

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.

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.

Those skilled in the art should understand that after the network device sends update information or measurement instructions to the terminal, the terminal can be caused to measure one or more CSI-RSs, and obtain the updated first resource according to the measurement results of the one or more CSI-RSs. , And use the updated first resource to perform uplink communication or downlink communication with the network device.

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

Exemplarily, taking the configuration information included in the RRC dedicated information, the configuration information includes the configuration of one or more CSI-RSs as an example, the terminal may receive RRC dedicated information from the network device (for example: RRC release message or RAR/message Information carried by B), obtain the CSI-RS configuration from the RRC dedicated information, and measure one or more CSI-RS according to the CSI-RS configuration.

Exemplarily, taking the configuration information carried in the paging message, the configuration information includes the configuration of one or more CSI-RS as an example, the terminal may receive the paging message of the network device, and obtain the CSI-RS configuration from the paging message , Measure one or more CSI-RS according to the CSI-RS configuration.

Exemplarily, the configuration information is carried in the RRC release message, the configuration information includes one or more CSI-RS configuration numbers, and the SIB includes the correspondence between the CSI-RS configuration and the CSI-RS configuration identifier. , The terminal can receive the configuration information from the network device, and the terminal can also receive the SIB from the network device that includes the correspondence between the CSI-RS configuration and the CSI-RS configuration identifier, and based on one or more CSI-RS The identifier of the configuration determines the configuration of one or more CSI-RS.

Optionally, during the downlink communication between the terminal and the network device, the terminal receives update information or measurement instructions from the network device, so that after the terminal receives the update information or measurement instructions, it measures the one according to the update information or measurement instructions. Or multiple CSI-RS.

Exemplarily, when the terminal receives the downlink data from the network device, it receives the update information or measurement instruction. For example, the terminal receives the downlink data and update information from the network device; or the terminal receives the downlink data and measurement instruction from the network device.

Exemplarily, when the terminal receives the downlink control information from the network device, it receives the update information. For example, the terminal receives downlink control information from a network device, where the downlink control information includes the update information or measurement indication.

Exemplarily, when the terminal receives the MAC signaling from the network device, it receives the update information. For example, the terminal receives MAC signaling from a network device, and the MAC signaling carries the update information or measurement indication.

Exemplarily, when the terminal receives the RRC signaling from the network device, it receives the update information. For example, the terminal receives RRC signaling from a network device, and the RRC signaling carries the update information or measurement indication.

Optionally, the terminal uses the first resource to perform uplink communication or downlink communication with the network device under a first condition, where the first condition includes one or more of the following: within the valid time period, while receiving update information from the network device Before, before receiving a measurement instruction from the network device, or before measuring a resource different from the first resource. In this way, the terminal can be within a certain period of time (for example, within the valid duration), or before receiving update information from the network device, or before receiving a measurement instruction from the network device, or before measuring a resource different from the first resource, By using the first resource, the communication performance between the terminal and the network device is improved, without the need to frequently measure one or more CSI-RSs to obtain resources, which reduces the measurement overhead.

Wherein, the effective duration may be the duration between time 3 and time 4.

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.

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 the configuration information from the network device next time.

Those skilled in the art should understand that, after receiving the update information or measurement indication, the terminal can measure one or more CSI-RSs according to the update information or measurement indication, and obtain the updated information according to the measurement results of the one or more CSI-RSs. And use the updated first resource to perform uplink communication or downlink communication with the network device.

Based on the method shown in Figure 3, the network device can send configuration information for configuring the one or more CSI-RSs to the terminal, and the terminal can receive the configuration information from the network device, and measure the one or more CSI-RSs according to the configuration information. CSI-RS, which can perform uplink communication or downlink communication with the network device according to the measurement result of the one or more CSI-RS, thereby improving the communication performance between the terminal and the network device.

The following takes the resource pool described in step 201 in FIG. 2 as a CG as an example to introduce the communication method provided by the embodiment of the present application. Specifically, as shown in FIG. 4, the communication method includes steps 401-405.

Step 401: The network device sends configuration information to the terminal through RRC dedicated information.

Wherein, the network device may be the network device 101 in FIG. 1 or a component in the network device 101 in FIG. 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., which is not limited.

Wherein, the terminal may be any terminal 102 in FIG. 1 or 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., which is not limited. The terminal is in the RRC-connected state.

It can be understood that this step 401 is an optional step. That is to say, when the communication method provided in the embodiment of the present application is executed, the network device and the terminal may not execute this step 401.

For the specific process of step 401, refer to the corresponding introduction in step 301 above, and will not be repeated.

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

Step 403: The terminal measures the one or more CSI-RS.

Step 404: The terminal obtains the first uplink resource according to the measurement result of one or more CSI-RSs, where the first uplink resource belongs to the resource of the CG.

Step 405: The terminal uses the first uplink resource to send uplink data to the network device.

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

The specific process of step 402 to step 405 can be referred to the corresponding introduction in step 201 to step 203 above, and will not be repeated.

Optionally, after step 405, the network device determines the 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 an ACK or NACK to the terminal.

Further optionally, if the network device updates the configuration of the one or more CSI-RSs, when the network device uses the first downlink resource to send an ACK or NACK to the terminal, it sends update information to the terminal. The update information is used to indicate to update the configuration of the one or more CSI-RSs, so that after receiving the update information, the terminal can measure the one or more CSI-RSs according to the update information; or, if the network device instructs the terminal to measure the CSI-RS For one or more CSI-RS, when the network device uses the first downlink resource to send an ACK or NACK to the terminal, it sends a measurement indication to the terminal. The measurement indication is used to instruct the terminal to measure the one or more CSI-RS.

It is understandable that, after step 405, optionally, 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 does not send uplink data to the network device, and the network device does not send downlink data to the terminal; or the network device indicates to the terminal that there is no downlink transmission; or the terminal does not receive the downlink transmission from the network device for a period of time.

Optionally, after the transmission process ends, the terminal monitors or receives paging messages or system information.

Further optionally, the terminal measures one or more SSBs, obtains a third resource according to the measurement result of the one or more SSBs, and monitors the paging message or system information on the third resource. Wherein, the third resource may include time domain resources, and/or frequency domain resources, and/or space domain resources.

Based on the method shown in Figure 4, 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 transitions to the transmission process, the terminal can Measure one or more CSI-RS according to the configuration information, obtain the first uplink resource according to the measurement result of the one or more CSI-RS, and use the first uplink resource to send uplink data to the network device, thereby improving the terminal Communication performance with network equipment.

In the following, in conjunction with FIG. 5, the communication method provided by the embodiment of the present application will be introduced by taking as an example the application of the preamble sent by the terminal to the network device in the 2-step random access process in the method shown in FIG.

Specifically, as shown in FIG. 5, the communication method includes step 501-step 506.

Step 501: The network device sends configuration information to the terminal through RRC dedicated information.

Wherein, the network device may be the network device 101 in FIG. 1 or a component in the network device 101 in FIG. 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., which is not limited.

Wherein, the terminal may be any terminal 102 in FIG. 1 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., which is not limited. The terminal is in the RRC-connected state.

It can be understood that this step 501 is an optional step. That is to say, when the communication method provided in the embodiment of the present application is executed, the network device and the terminal may not execute this step 501.

For the specific process of step 501, reference may be made to the corresponding introduction in step 301, which will not be repeated.

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

Step 503: The terminal measures the one or more CSI-RS.

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

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

Exemplarily, the terminal uses the first uplink resource to send the uplink data and the preamble to the network device; correspondingly, the network device uses the first uplink resource to receive the uplink data and the preamble from the terminal. Optionally, the network device or the terminal determines the first downlink resource corresponding to the first uplink resource according to the first uplink resource; or, the network device receives the information related to the first downlink resource from the terminal, and according to the first uplink resource The information related to the downlink resource determines the first downlink resource.

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

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

Among them, the above-mentioned step 505-step 506 is 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 a two-step random access process, which improves the success rate of random access.

The specific process of step 502-step 506 can be referred to the corresponding introduction in step 201-step 203 above, and will not be repeated.

Optionally, if the network device updates the configuration of one or more CSI-RSs, when the network device sends RAR or message B to the terminal, it may send the update information to the terminal. The update information is used to indicate to update 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 according to the update information. CSI-RS; or, if the network device instructs the terminal to measure the one or more CSI-RSs, when the network device sends RAR or message B to the terminal, it sends a measurement instruction to the terminal. The measurement instruction is used to instruct the terminal to measure the one or Multiple CSI-RS; Correspondingly, when receiving the RAR or message B from the network device, the terminal receives the measurement instruction from the network device, and measures one or more CSI-RS according to the measurement instruction.

It is understandable that, after step 506, optionally, 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 does not send uplink data to the network device, and the network device does not send downlink data to the terminal; or, the network device indicates to the terminal that there is no downlink transmission; or the terminal does not receive the downlink transmission from the network device for a period of time.

Based on the method shown in Figure 5, when the terminal is in the RRC-connected state, the terminal can receive the configuration information from the network device through RRC dedicated information. When the terminal is in the RRC-inactive state and transfers to the transmission process, the terminal can Measure one or more CSI-RS according to the configuration information, obtain the first uplink resource according to the measurement result of the one or more CSI-RS, and use the first uplink resource to perform uplink data transmission and preamble transmission with the network device, Thereby, the success rate of random access can be improved.

In a possible implementation manner, the following describes the communication method provided by the embodiment of the present application by taking the method shown in FIG. 2 as an example in the 4-step random access process when the terminal sends the preamble to the network device in the method shown in FIG.

Specifically, as shown in FIG. 6, the communication method includes step 601-step 607.

Step 601: The terminal uses the second uplink resource to send a preamble to the network device.

Wherein, the terminal may be any terminal 102 in FIG. 1 or 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., which is not limited. The terminal is in the RRC-inactive state.

The method for determining the second uplink resource can refer to the case (1.3) in 2.

Correspondingly, the network device can use the second uplink resource to receive the preamble from the terminal. The network device may also determine the second downlink resource corresponding to the second uplink resource according to the second uplink resource.

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

Wherein, the network device may be the network device 101 in FIG. 1 or a component in the network device 101 in FIG. 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., which is not limited.

For the specific introduction of the configuration information, reference may be made to the corresponding introduction in step 301 above, which will not be repeated.

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

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

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

Step 604: The terminal measures the one or more CSI-RS.

Step 605: The terminal obtains the first uplink resource according to the measurement result of one or more CSI-RS.

Step 606: The terminal uses the first uplink resource to send uplink data to the network device.

Optional step 607: The network device uses the first downlink resource to send a message 4 (message 4) to the terminal.

Wherein, the message 4 may also be understood as a contention resolution message, which may be used to indicate the success of the random access contention, for example.

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

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

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

The specific process of step 603 to step 607 can be referred to the corresponding introduction in step 201 to step 203 above, and will not be repeated.

Among them, the above-mentioned step 601-step 602, and step 606-step 607 are four-step random access procedures. For steps 601 to 602, the second uplink resource can be used to realize the transmission of the preamble, and the second downlink resource can be used to realize the transmission of the RAR. There is no need to obtain the preamble resource before the four-step random process, which reduces the measurement overhead. For step 606-step 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 to improve random access The communication performance of the process.

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

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

It can be understood that, after step 607, optionally, 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 does not send uplink data to the network device, and the network device does not send downlink data to the terminal; or the network device indicates to the terminal that there is no downlink transmission; or the terminal does not receive the downlink transmission from the network device for a period of time.

Based on the method shown in Figure 6, the terminal can use the second uplink resource to send the preamble to the network device; after receiving the preamble using the second uplink resource, the network device can send configuration information when sending the RAR to the terminal. Therefore, After receiving the RAR and configuration information from the network device, the terminal can measure one or more CSI-RSs according to the configuration information, and obtain the first uplink resource according to the measurement results of the one or more CSI-RSs, and use the first uplink resource. An uplink resource sends uplink data to the network device, so that the communication performance between the terminal and the network device can be improved.

The following takes the network device sending the configuration information to the terminal through the fourth resource as an example to introduce the communication method provided in the embodiment of the present application. Specifically, as shown in FIG. 7, the communication method includes step 701 to step 706.

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

Wherein, the network device may be the network device 101 in FIG. 1 or a component in the network device 101 in FIG. 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., which is not limited.

The terminal may be any terminal 102 in FIG. 1, or may 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., which is not limited. The terminal is in the RRC-inactive state.

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

Correspondingly, the terminal receives the paging message from the network device.

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

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

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

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

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

Step 704: The terminal measures the one or more CSI-RS.

It is understandable that step 703 can be executed before step 704. The embodiment of the present application does not limit the execution order of step 703 in the method shown in FIG. 7. For example, step 703 can be executed before step 701 or after step 701 , It is executed before step 702 and is not limited.

Step 705: The terminal obtains the first uplink resource according to the measurement result of one or more CSI-RS.

Step 706: The terminal uses the first uplink resource to send the ACK or NACK of the downlink data to the network device.

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

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 repeated.

It is understandable that after step 706, the network device may also send update information to the terminal. The update information is used to indicate to update the configuration of one or more CSI-RSs, so that after receiving the update information, the terminal can measure the one or more CSI-RSs according to the update information; or, the network device can also send the measurement to the terminal Indication, the measurement indication is used to indicate the configuration of measuring one or more CSI-RSs, so that after receiving the measurement indication, the terminal measures the configuration of the one or more CSI-RSs according to the measurement indication.

It is understandable that after step 706, optionally, 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 does not send uplink data to the network device, and the network device does not send downlink data to the terminal; or the network device indicates to the terminal that there is no downlink transmission; or the terminal does not receive the downlink transmission from the network device for a period of time.

Optionally, after the transmission process ends, the terminal monitors the paging message or system information.

Based on the method shown in Figure 7, 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 the fourth resource. Therefore, the terminal can Measure one or more CSI-RS according to the configuration information, and obtain the first resource according to the measurement result of the one or more CSI-RS, so that the terminal can use the first resource to communicate with the network device to improve the terminal Communication performance with network equipment.

In a possible implementation manner, the network device sends the configuration information to the terminal through a paging message. In the following, the communication method provided in the embodiment of the present application is introduced by taking the network device sending the configuration information to the terminal through a paging message as an example. Specifically, as shown in FIG. 8, the communication method includes step 801 to step 805.

Step 801: The network device sends configuration information to the terminal through a paging message.

Wherein, the network device may be the network device 101 in FIG. 1 or a component in the network device 101 in FIG. 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., which is not limited.

Wherein, the terminal may be any terminal 102 in FIG. 1 or 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., which is not limited. The terminal is in the RRC-inactive state.

Optionally, the network device sending configuration information to the terminal through a paging message includes: the network device sending a paging message to the terminal, and the paging message includes the configuration information.

Among them, the specific introduction of the configuration information can refer to the corresponding introduction in the foregoing step 301, which will not be repeated.

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

Optionally, the terminal receiving the configuration information from the network device through a paging message includes: the terminal receives a paging message from the network device, and the paging message includes the configuration information.

It can be understood that this step 801 is an optional step. That is to say, when the communication method provided in the embodiment of the present application is executed, the network device and the terminal may not execute this step 801.

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

Step 803: The terminal measures the one or more CSI-RS.

Step 804: The terminal obtains the first resource according to the measurement result of one or more CSI-RSs.

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

Among them, uplink communication includes preamble transmission, or uplink data transmission and preamble transmission.

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

Among them, the downlink communication includes one or more of downlink control information transmission, RAR/message B transmission, or downlink data transmission.

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

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 repeated.

Optionally, after step 805, optionally, if the network device updates the configuration of one or more CSI-RSs, the network device sends update information to the terminal. The update information is used to indicate to update the configuration of the one or more CSI-RSs, so that after receiving the update information, the terminal can measure one or more CSI-RSs according to the update information; or, if the network device instructs to measure one or more CSI-RSs CSI-RS, the network device sends a measurement indicator to the terminal, the measurement indicator is used to instruct to measure the one or more CSI-RS, so that the terminal can measure one or more CSI-RS according to the measurement indicator after receiving the measurement indicator .

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 does not send uplink data to the network device, and the network device does not send downlink data to the terminal; or, the network device indicates to the terminal that there is no downlink transmission; or the terminal does not receive the downlink transmission from the network device for a period of time.

Based on the method shown in Figure 8, 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-RSs according to the configuration information, and measure one or more CSI-RS according to the The measurement results of multiple CSI-RS obtain the first resource, and subsequently, the terminal can use the first resource to perform data communication with the network device, so that the communication performance between the terminal and the network device can be improved.

In a possible implementation manner, the terminal may indicate the first resource to the network device when the first resource is different from the fourth resource. The following takes the terminal monitoring paging messages in the RRC-inactive state as an example to introduce the communication method provided by the embodiment of the present application. Specifically, as shown in FIG. 9, the communication method includes steps 901 to 905.

Step 901: The network device sends configuration information to the terminal through a paging message.

Wherein, the network device may be the network device 101 in FIG. 1 or a component in the network device 101 in FIG. 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., which is not limited.

The terminal may be any terminal 102 in FIG. 1, or may 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., which is not limited. The terminal is in the RRC-inactive state.

Optionally, the network device sending configuration information to the terminal through a paging message includes: the network device periodically sending a paging message to the terminal, and the paging message includes the configuration information.

Optionally, the terminal receiving configuration information from the network device through a paging message includes: the terminal periodically receives a paging message from the network device, and the paging message includes the configuration information.

It can be understood that this step 901 is an optional step. That is to say, when the communication method provided in the embodiment of the present application is executed, the network device and the terminal may not execute this step 901.

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

Step 903: The terminal measures the one or more CSI-RS.

Step 904: The terminal obtains the first resource according to the measurement result of one or more CSI-RSs.

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 repeated.

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

The fourth resource is a resource obtained by the terminal according to the configuration information sent by the network device last time, and the fourth resource may also be described as the first resource measured by the terminal last time.

Optionally, if the first resource is the same as the fourth resource, the terminal may measure one or more SSBs, obtain the third resource according to the measurement result of the one or more SSBs, and use the third resource to monitor paging messages or system message. Wherein, the third resource may include time domain resources, and/or frequency domain resources, and/or space domain resources.

Optionally, the terminal indicating the first resource to the network device includes: the terminal sends information related to the first resource to the network device. For the specific introduction of this process, reference may be made to the corresponding description in the method shown in FIG. 2 and will not be repeated.

Based on the method shown in Figure 9, 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-RSs according to the configuration information, and measure one or more CSI-RS based on the configuration information. The measurement results of multiple CSI-RSs obtain the first resource. If the first resource is different from the fourth resource, the terminal indicates the first resource to the network device, and subsequently, the terminal can use the first resource when communicating with the network device, Thereby, the communication performance when the terminal communicates with the network device can be improved.

Corresponding to the methods given in the foregoing method embodiments, the embodiments of the present application also provide corresponding devices, including corresponding modules for executing the foregoing embodiments. The module can be software, hardware, or a combination of software and hardware.

Figure 10 shows a schematic diagram of the structure of a device. The apparatus 100 may be a network device, a terminal, a chip, a chip system, or a processor that supports the network device to implement the foregoing method, or a chip, a chip system, or a processor that supports the terminal to implement the foregoing method.器等。 The device can be used to implement the method described in the foregoing method embodiment, and for details, please refer to the description in the foregoing method embodiment.

The apparatus 100 may include one or more processors 1001, and the processor 1001 may also be referred to as a processing unit, which may implement certain control functions. The processor 1001 may be a general-purpose processor or a special-purpose processor. For example, it can be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processor can be used to control communication devices (such as base stations, baseband chips, terminals, terminal chips, DU or CU, etc.), execute software programs, and process The data of the software program.

In an alternative design, the processor 1001 may also store an instruction 1003, and the instruction 1003 may be executed by the processor, so that the apparatus 100 executes the method described in the foregoing method embodiment.

In another optional design, the processor 1001 may include a transceiver unit for implementing receiving and sending functions. For example, the transceiver unit may be a transceiver circuit, or an interface, or an interface circuit. The transceiver circuits, interfaces, or interface circuits used to implement the receiving and transmitting functions can be separate or integrated. The foregoing transceiver circuit, interface, or interface circuit can be used for code/data reading and writing, or the foregoing transceiver circuit, interface, or interface circuit can be used for signal transmission or transmission.

In another possible design, the apparatus 100 may include a circuit, which may implement the sending or receiving or communication functions in the foregoing method embodiments.

Optionally, the apparatus 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 apparatus 100 executes the foregoing method embodiments. Described method. Optionally, data may also be stored in the memory. Optionally, instructions and/or data may also be stored in the processor. The processor and the memory can be provided separately or integrated together. For example, the corresponding relationship described in the foregoing method embodiment may be stored in a memory or in a processor.

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, and controls the device 100. The transceiver 1005 may be called a transceiver unit, a transceiver, a transceiver circuit, a transceiver device, or a transceiver module, etc., for implementing the transceiver function.

Optionally, the apparatus 100 in the embodiment of the present application can be used to execute the method described in any one of Figures 2 to 9 in the embodiment of the present application, and can also be used to execute the two or more figures described above. The described methods are combined with each other.

The processor and transceiver described in this application can be implemented in integrated circuit (IC), analog IC, radio frequency integrated circuit RFIC, mixed signal IC, application specific integrated circuit (ASIC), printed circuit board ( printed circuit board, PCB), electronic equipment, etc. The processor and transceiver can also be manufactured by various IC process technologies, such as complementary metal oxide semiconductor (CMOS), nMetal-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.

The device described in the above embodiment may be a network device or a terminal, but the scope of the device described in this application is not limited to this, and the structure of the device may not be limited by FIG. 10. The device can be a stand-alone device or can be part of a larger device. For example, the device may be:

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

(2) A collection with one or more ICs. Optionally, the IC collection may also include storage components for storing data and/or instructions;

(3) ASIC, such as modem (MSM);

(4) Modules that can be embedded in other equipment;

(5) Receivers, terminals, smart terminals, cellular phones, wireless devices, handhelds, mobile units, in-vehicle equipment, network equipment, cloud equipment, artificial intelligence equipment, machinery equipment, household equipment, medical equipment, industrial equipment, etc.;

(6) Others, etc.

Figure 11 provides a schematic structural diagram of a terminal. The terminal can be applied to the scenario shown in FIG. 1. For ease of description, FIG. 11 only shows the main components of the terminal. As shown in FIG. 11, the terminal 110 includes a processor, a memory, a control circuit, an antenna, and an input and 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 software programs and data. The radio frequency circuit is mainly used for the conversion of baseband signals and radio frequency signals and the processing of radio frequency signals. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users.

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 then outputs the baseband signal to the radio frequency circuit. The radio frequency circuit processes the baseband signal to obtain a radio frequency signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves. . When data is sent to the terminal, the radio frequency circuit receives the radio frequency signal through the antenna, the radio frequency 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 .

For ease of description, FIG. 11 only shows a memory and a processor. 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.

As an optional implementation, the processor may include a baseband processor and a central processing unit. The baseband processor is mainly used to process communication protocols and communication data. The central processing unit is mainly used to control the entire terminal and execute software. Programs, which process the data of software programs. The processor in FIG. 11 integrates the functions of the baseband processor and the central processing unit. Those skilled in the art can understand that the baseband processor and the central processing unit may also be independent processors, and are interconnected by technologies such as a bus. Those skilled in the art can understand that the terminal may include multiple baseband processors to adapt to different network standards, the terminal may include multiple central processors to enhance its processing capabilities, and various components of the terminal may be connected through various buses. The baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data can be built in the processor, or can be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

In an example, an antenna and a control circuit with a transceiving function can be regarded as the transceiving unit 1111 of the terminal 110, and a processor with a processing function can be regarded as the processing unit 1112 of the terminal 110. As shown in FIG. 11, the terminal 110 includes a transceiver unit 1111 and a processing unit 1112. The transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, and so on. Optionally, the device for implementing the receiving function in the transceiver unit 1111 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 1111 as the sending unit, that is, the transceiver unit 1111 includes a receiving unit and a sending unit. Exemplarily, the receiving unit may also be called a receiver, a receiver, a receiving circuit, etc., and the sending unit may be called a transmitter, a transmitter, or a transmitting circuit, etc. Optionally, the foregoing receiving unit and sending unit may be an integrated unit or multiple independent units. The above-mentioned receiving unit and sending unit may be in one geographic location, or may be scattered in multiple geographic locations.

As shown in FIG. 12, another embodiment of the present application provides an apparatus 120. The device may be a terminal or a component of the terminal (for example, an integrated circuit, a chip, etc.). Alternatively, the device may be a network device, or a component of a network device (for example, an integrated circuit, a chip, etc.). The device may also be another communication module, which is used to implement the method in the method embodiment of the present application. The apparatus 120 may include: a processing module 1202 (or referred to as a processing unit). Optionally, it may also include a transceiver module 1201 (or referred to as a transceiving unit) and a storage module 1203 (or referred to as a storage unit).

In a possible design, one or more modules as shown in Figure 12 may be implemented by one or more processors, or by one or more processors and memories; or by one or more processors It may be implemented with a transceiver; or implemented by one or more processors, memories, and transceivers, which is not limited in the embodiment of the present application. The processor, memory, and transceiver can be set separately or integrated.

The device has the function of implementing the terminal described in the embodiment of the application. For example, the device includes a module or unit or means corresponding to the terminal to execute the steps related to the terminal described in the embodiment of the application. The function or unit is Means can be implemented through software, or through hardware, or through hardware executing corresponding software, or through a combination of software and hardware. For details, reference may be made to the corresponding description in the foregoing corresponding method embodiment. Alternatively, the device has the function of implementing the network device described in the embodiment of this application. For example, the device includes the module or unit or means corresponding to the network device executing the steps involved in the network device described in the embodiment of this application. The functions or units or means (means) can be realized by software, or by hardware, or by hardware executing corresponding software, or by a combination of software and hardware. For details, reference may be made to the corresponding description in the foregoing corresponding method embodiment.

Optionally, each module in the apparatus 120 in the embodiment of the present application can be used to execute the method described in any one of Figures 2 to 9 in the embodiment of the present application, or can be used to execute the two or more above-mentioned figures. The methods described in the figure are combined with each other.

In a possible implementation manner, an apparatus 120 may include: a processing module 1202 and a transceiver module 1201.

In a 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.

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 results of the one or more CSI-RSs.

In the embodiment of the present application, the terminal (for example, the device 120) may measure one or more CSI-RS when the terminal is in the RRC-inactive state, and perform uplink communication with the network device according to the measurement result of the one or more CSI-RS Or downlink communication, because the CSI-RS measurement result can 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 channel with better channel quality according to the CSI-RS measurement result. Transmission resources, and perform up and down communication or downlink communication with the network equipment on the transmission resources, so as to improve the communication performance between the terminal and the network equipment when the terminal is in the RRC-inactive state. In addition, when the terminal measures one or more CSI-RSs, it can determine transmission resources with better channel quality for the terminal. Later, when the terminal transitions to the RRC-idle state, the RRC-connected state or other states, the terminal can also Use the transmission resource to perform uplink communication or downlink communication with the network device, which improves the communication performance between the terminal and the network device when the terminal is in the RRC-idle state, the RRC-connected state or other states, and can also reduce the terminal being in the RRC-idle state. In state, RRC-connected state or other states, determine the measurement overhead brought by transmission resources with better channel quality.

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

In the embodiment of the present application, the terminal (for example, the device 120) may perform uplink data transmission, uplink control information transmission, preamble transmission, or uplink sounding reference signal transmission with the network equipment according to the measurement results of one or more CSI-RSs. Communication, while improving the communication performance of the uplink communication between the terminal and the network device, it can also improve the flexibility and diversity of the uplink communication between the terminal and the network device.

In a possible design, the downlink communication includes downlink data reception, and/or downlink control information reception.

In the embodiment of the present application, the terminal (for example, the apparatus 120) can perform downlink data reception with network equipment according to the measurement results of one or more CSI-RS, and/or downlink control information reception and other types of downlink communications, thereby improving the terminal In addition to the communication performance of the downlink communication with the network device, the flexibility and diversity of the downlink communication between the terminal and the network device can also be improved.

In a possible design, the processing module 1202 is specifically configured to obtain the first resource including the first uplink resource or the first downlink resource according to the measurement result of the one or more CSI-RSs, and control the transceiver module 1201 Use the first resource to perform uplink communication or downlink communication with the network device.

In the embodiment of the present application, the terminal (for example, the apparatus 120) may obtain the first resource according to the measurement result of one or more CSI-RS, and use the first uplink resource to perform uplink communication with the network device, or use the first downlink When the terminal communicates with the network device, the first resource can be used to improve the communication performance between the terminal and the network device because the CSI-RS measurement result can reflect the channel quality of the corresponding resource. .

In a possible design, the first resource includes one or more of time domain resources, frequency domain resources, space domain resources, or code domain resources.

In the embodiment of the present application, the terminal (for example, the device 120) can determine multiple resources such as time domain resources, frequency domain resources, space domain resources, or code domain resources according to the CSI-RS measurement results, and use the time domain resources, frequency domain resources, etc. One or more of resources, airspace resources, or code domain resources perform uplink communication or downlink communication with the network device, so that the diversity of resources used for uplink communication or downlink communication between the terminal and the network device can be increased, and Improve the flexibility of uplink communication or downlink communication between the terminal and the network equipment.

In a possible design, the transceiver module 1201 is further configured to send information related to the first resource to the network device, where the information related to the first resource is used to indicate the first resource.

In the embodiment of the present application, the terminal (for example, the apparatus 120) may 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 CSI-RS measurement result To the network device so that the network device uses the first resource to communicate with the terminal according to the terminal's instruction, so that the communication performance between the terminal and the network device can be improved.

In a possible design, the processing module 1202 is also specifically configured to control the transceiver module 1201 to use the first resource to perform uplink communication or downlink communication with the network device under a first condition, where the first condition includes the following One or more: within the valid time period, before receiving the update information from the network device, before receiving the measurement instruction from the network device, or before measuring a resource different from the first resource; the update information is used for Instruct to update the configuration of the one or more CSI-RS; the measurement instruction is used to instruct to measure the one or more CSI-RS.

In the embodiment of the present application, the terminal (for example, the apparatus 120) may use the terminal within a certain period of time, before obtaining a new CSI-RS configuration, before receiving a measurement instruction from a network device, or before measuring a resource different from the first resource. The first resource performs uplink communication or downlink communication with the network device. In this way, the terminal can use the same resource to communicate with the network device within a certain period of time without frequently measuring one or more CSI-RS to update the communication The resource reduces the measurement overhead of the terminal and the update frequency of the resource.

In a possible design, the transceiver module 1201 is also used to receive configuration information from the network device, where the configuration information is used to configure the one or more CSI-RSs.

In the embodiments of the present application, the CSI-RS can be configured by the network device to the terminal (for example, the device 120). Since the network device has a centralized management function for the terminal's communication conditions, the terminal can measure the CSI-RS configured by the network device. As a result, the channel quality can be reflected more accurately, and the communication performance between the terminal and the network device can be improved.

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

In the embodiment of the present application, the terminal (for example, the apparatus 120) can receive configuration information from the network device through multiple types of information, which increases the diversity and flexibility of the terminal to obtain the configuration information.

In a possible design, the processing module 1202 is specifically configured 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.

In the embodiment of the present application, the terminal (for example, the device 120) may be in the RRC-inactive state, the RRC-idle state, or the RRC-connected state, according to the measurement results of one or more CSI-RSs in the RRC-inactive state. The network device performs uplink communication or downlink communication. Since the CSI-RS measurement result can characterize the channel quality of the transmission resource corresponding to the CSI-RS between the terminal and the network device, the terminal can select the channel quality according to the CSI-RS measurement result. A transmission resource with better channel quality, and perform up and down communication or downlink communication with the network device on the transmission resource, so as to improve 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-RSs, it can determine transmission resources with better channel quality for the terminal. Later, when the terminal transitions to the RRC-idle state, the RRC-connected state or other states, the terminal can also Use the transmission resource to perform uplink communication or downlink communication with the network device, which improves the communication performance between the terminal and the network device when the terminal is in the RRC-idle state, the RRC-connected state or other states, and can also reduce the terminal being in the RRC-idle state. In state, RRC-connected state or other states, determine the measurement overhead brought by transmission resources with better channel quality.

In a possible design, in the RRC-inactive state, measuring one or more CSI-RS includes: in the RRC-inactive state, measuring the reference signal received power and reference signal reception of the one or more CSI-RS One or more of quality, signal to interference plus noise ratio, or received signal strength indication. Optionally, for any CSI-RS of the one or more CSI-RSs, the CSI-RS's reference signal received power, reference signal received quality, signal to interference plus noise ratio, or received signal strength indicator One or more types can be used as the first parameter.

In the embodiment of the present application, the terminal (for example, the device 120) can measure the CSI-RS reference signal received power, reference signal received quality, signal to interference plus noise ratio, or received signal strength indication, etc. in the RRC-inactive state. One or more related parameters of channel quality are obtained by obtaining measurement results. In this way, the flexibility and diversity of CSI-RS measurement can be improved.

In a possible design, obtaining the first resource according to the measurement result of the one or more CSI-RSs includes: among the one or more CSI-RSs, a CSI-RS with a higher first parameter corresponds to The resource is determined to be the first resource.

In the embodiment of the present application, the terminal (for example, the device 120) may determine the resource corresponding to the CSI-RS with the higher first parameter among the one or more CSI-RSs as the first resource, since the CSI-RS measurement result may be Characterizes the channel quality of the transmission resource corresponding to the CSI-RS between the terminal and the network device. Therefore, the channel quality/communication quality of the first resource corresponding to the CSI-RS with the higher first parameter is better, so that the terminal uses the first The resources corresponding to the CSI-RS with higher parameters communicate with the network equipment, which can better improve the communication performance between the terminal and the network equipment.

In another possible implementation manner, a device 120 may include: a transceiver module 1201.

In a possible design, the transceiver module 1201 is configured to send one or more CSI-RSs to the terminal, where the one or more CSI-RSs are used for measurement in the RRC-inactive state.

The transceiver module 1201 is further configured to perform uplink communication or downlink communication with the terminal, and the uplink communication or the downlink communication corresponds to at least one of the one or more CSI-RSs.

In the embodiment of the present application, the network device (for example, the apparatus 120) may 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 according to the measurement result Uplink communication or downlink communication with network equipment. 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, the transmission resource corresponding to a certain CSI-RS ( For example, the transmission resource corresponding to the CSI-RS with better channel quality) performs up and down communication or downlink communication with the terminal, so as to improve the communication performance between the network device and the terminal.

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

In the embodiment of this application, the network device (for example, the apparatus 120) can perform uplink communication with the terminal such as uplink data reception corresponding to CSI-RS, uplink control information reception, preamble detection or uplink sounding reference signal reception, etc., thereby improving the network equipment In addition to the communication performance of the uplink communication with the terminal, the flexibility and diversity of the uplink communication between the network device and the terminal can also be improved.

In a possible design, the downlink communication includes downlink data transmission and/or downlink control information transmission.

In the embodiment of the present application, the network device (for example, the apparatus 120) can perform downlink data transmission corresponding to the CSI-RS with the terminal, and/or downlink communication such as downlink control information transmission, which improves the downlink between the network device and the terminal. In addition to the communication performance of the communication, the flexibility and diversity of the downlink communication between the network equipment and the terminal can also be improved.

In a possible design, the transceiver module 1201 is specifically configured 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, where the first resource and the one or The at least one CSI-RS among the plurality of CSI-RS corresponds.

In the embodiment of the present application, the network device (for example, the apparatus 120) may perform uplink communication with the terminal on the first uplink resource corresponding to at least one CSI-RS, or the network device may perform the uplink communication with the terminal on the first uplink resource corresponding to the at least one CSI-RS. CSI-RS measurement results can characterize the channel quality of the transmission resource corresponding to the CSI-RS between the terminal and the network device. Therefore, when the network device communicates with the terminal, the channel quality is used to communicate with the terminal. The first resource corresponding to the better CSI-RS improves the communication performance between the network device and the terminal.

In the embodiments of the present application, the network equipment (for example, the apparatus 120) can use multiple resources such as time domain resources, frequency domain resources, space domain resources, or code domain resources to perform uplink communication or downlink communication with the network equipment. The diversity of resources for uplink communication or downlink communication between devices and terminals, and the improvement of the flexibility of uplink communication or downlink communication between network devices and terminals.

In a possible design, the transceiver module 1201 is further configured to receive information related to the first resource from the terminal, where the information related to the first resource is used to indicate the first resource.

In the embodiment of the present application, the network device (for example, the apparatus 120) 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 that it can be connected to the terminal in subsequent uplinks. Using the first resource in communication or downlink communication can further improve communication performance with the terminal.

In a possible design, the transceiver module 1201 is also specifically configured to use the first resource to perform uplink communication or downlink communication with the terminal under a first condition, where the first condition includes one or more of the following : Within the valid time period, before sending update information to the terminal, before sending a measurement instruction to the terminal, or before obtaining a resource different from the first resource; the update information is used to indicate to update the one or more CSI- RS configuration; the measurement indication is used to indicate the measurement of the one or more CSI-RSs.

In the embodiment of the present application, the network device (for example, the apparatus 120) may within a certain period of time, before sending a new CSI-RS configuration to the terminal, before sending a measurement instruction to the terminal, or after obtaining a resource different from the first resource. Previously, the first resource was used for uplink communication or downlink communication with the terminal. In this way, the network device can use the same resource to communicate with the terminal within a certain fixed period of time without updating the resources for communication, which reduces the resource cost. Update frequency.

In a 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-RSs.

In the embodiment of the present application, the network device (for example, the apparatus 120) can send configuration information to the terminal. Since the network device has a centralized management function for the terminal's communication conditions, the CSI-RS configured by the network device can enable the terminal to measure the CSI-RS to obtain The result more accurately reflects the channel quality, thereby improving the communication performance between the terminal and the network device.

In the embodiment of the present application, the network device (for example, the apparatus 120) may send 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.

It is understandable that some optional features in the embodiments of the present application, in some scenarios, may not depend on other features, such as the solutions they are currently based on, but can be implemented independently to solve the corresponding technical problems and achieve the corresponding The effect can also be combined with other features according to requirements in some scenarios. Correspondingly, the devices given in the embodiments of the present application can also implement these features or functions accordingly, which will not be repeated here.

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 a function is implemented by hardware or software depends on the specific application and the design requirements of the entire system. For corresponding applications, those skilled in the art can use various methods to implement the described functions, but such implementation should not be construed as going beyond the protection scope of the embodiments of the present application.

It can be understood that the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software. The above-mentioned processor may be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), a field programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.

The solution described in this application can be implemented in various ways. For example, these technologies can be implemented in hardware, software, or a combination of hardware. For hardware implementation, the processing unit used to execute 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 device, FPGA, or other programmable logic device, discrete gate or transistor logic, discrete hardware component, or any combination of the foregoing. The general-purpose processor may be a microprocessor. Alternatively, the general-purpose processor may 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, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration. achieve.

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

The present application also provides a computer-readable medium on which a computer program is stored, and when the computer program is executed by a computer, the function of any of the foregoing method embodiments is realized.

This application also provides a computer program product, which, when executed by a computer, realizes the functions of any of the foregoing method embodiments.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. 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, computer, server, or data center. Transmission to another website, computer, server, or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk, SSD)) etc.

It can be understood that the “embodiment” mentioned throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present application. Therefore, the various embodiments throughout the 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 can be understood that, in the various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not imply the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application. The implementation process constitutes any limitation.

It can be understood that in this application, "when", "if" and "if" all mean that the device will make corresponding processing under certain objective circumstances. It is not a time limit, and it does not require the device to be implemented. There must be a judgmental action, and it does not mean that there are other restrictions.

The "simultaneous" in this application can be understood as being at the same point in time, it can also be understood as being within a period of time, or it can be understood as being within the same period.

Those skilled in the art can understand that the various digital numbers such as first and second involved in the present application are only for easy distinction for description, and are not used to limit the scope of the embodiments of the present application. The specific value of the number (also referred to as an index), the specific value of the quantity, and the position in this application are for illustrative purposes only, and are not the only representation form, nor are they used to limit the scope of the embodiments of this application. . The first, second, and other digital numbers involved in this application are only for easy distinction for description, and are not used to limit the scope of the embodiments of this application.

The use of the singular element in this application is intended to mean "one or more" rather than "one and only one", unless otherwise specified. In this application, unless otherwise specified, "at least one" is intended to mean "one or more", and "multiple" is intended to mean "two or more".

In addition, the terms "system" and "network" in this article are often used interchangeably in this article. The term "and/or" in this article is only an association relationship describing the associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone In the three cases of B, A can be singular or plural, and B can be singular or plural. The character "Yes" generally indicates that the associated objects before and after are an "or" relationship.

The term "at least one of" or "at least one of" herein means all or any combination of the listed items, for example, "at least one of table, B and C", It can mean: A alone exists, B alone exists, C exists alone, A and B exist at the same time, B and C exist at the same time, and there are six cases of A, B and C at the same time, where A can be singular or plural, and B can be Singular or plural, C can be singular or plural.

It is understandable that in the embodiments of this application, "B corresponding to A should mean that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A. B can also be determined based on A and/or other information.

The corresponding relationships shown in the tables in this application can be configured or pre-defined. The value of the information in each table is only an example, and can be configured to other values, which is not limited in this application. When configuring the correspondence between the information and the parameters, it is not necessarily required to configure all the correspondences indicated in the tables. For example, in the table in this application, the corresponding relationship 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 in the above tables may also be other names that can be understood by the communication device, and the values or expressions of the parameters may also be other values or expressions that can be understood by the communication device. When the above tables are implemented, other data structures can also be used, such as arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables. Wait.

The pre-definition in this application can be understood as definition, pre-definition, storage, pre-storage, pre-negotiation, pre-configuration, curing, or pre-fired.

A person of ordinary skill in the art can understand that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

Those of ordinary skill in the art can understand that, for the convenience and conciseness of the description, the specific working process of the system, device, and unit described above can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

It can be understood that the systems, devices, and methods described in this application can also be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disks or optical disks and other media that can store program codes. .

The same or similar parts in the various embodiments of this application may be referred to each other. In each embodiment of this application, and each implementation method/implementation method/implementation method in each embodiment, if there is no special description and logical conflict, between different embodiments and each implementation manner/implementation method in each embodiment/ The terms and/or descriptions between the implementation methods/implementation methods are consistent and can be cited each other. The technical features in different embodiments and various implementation modes/implementation methods/implementation methods in each embodiment are based on their inherent The logical relationship can be combined to form a new embodiment, implementation, implementation method, or implementation method. The implementation manners of the application described above do not constitute a limitation on the protection scope of the application.

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application.

Claims

A communication method, characterized in that the method includes:

In the inactive RRC-inactive state of radio resource control, measure one or more channel state information reference signals CSI-RS;

According to the measurement result of the one or more CSI-RSs, perform uplink communication or downlink communication with the network device.
The method according to claim 1, wherein the uplink communication includes one or more of the following: uplink data transmission, uplink control information transmission, preamble transmission, or uplink sounding reference signal transmission.
The method according to claim 1, wherein the downlink communication comprises downlink data reception, and/or downlink control information reception.
The method according to any one of claims 1 to 3, wherein the performing uplink communication or downlink communication with a network device according to the measurement result of the one or more CSI-RSs comprises:

Obtaining the first resource according to the measurement result of the one or more CSI-RS;

Use the first resource to perform uplink communication or downlink communication with the network device.
The method according to claim 4, wherein the first resource includes one or more of time domain resources, frequency domain resources, space domain resources, or code domain resources.
The method according to claim 4 or 5, wherein the method further comprises:

Sending the information related to the first resource to the network device, where the information related to the first resource is used to indicate the first resource.
The method according to any one of claims 4-6, wherein the using the first resource to perform uplink communication or downlink communication with the network device comprises:

Use the first resource to perform uplink communication or downlink communication with the network device under a first condition, where the first condition includes one or more of the following: within a valid period of time, when receiving data from all devices Before updating information of the network device, before receiving a measurement instruction from the network device, or before measuring a resource different from the first resource; the update information is used to indicate to update the one or more CSI- RS configuration; the measurement indication is used to indicate the measurement of the one or more CSI-RS.
The method according to any one of claims 1-7, wherein the method further comprises:

Receiving configuration information from the network device, where the configuration information is used to configure the one or more CSI-RS.
The method according to claim 8, wherein the configuration information is included in one or more of RRC dedicated information, random access response, paging message, or system information.
The method according to any one of claims 1-9, wherein the performing uplink communication or downlink communication with a network device comprises:

In the RRC-inactive state, perform the uplink communication or the downlink communication with the network device.
A communication method, characterized in that the method includes:

Sending one or more channel state information reference signals CSI-RS to the terminal, where the one or more CSI-RS are used for measurement in a radio resource control inactive RRC-inactive state;

Perform uplink communication or downlink communication with the terminal, and the uplink communication or the downlink communication corresponds to at least one of the one or more CSI-RSs.
The method according to claim 11, wherein the uplink communication includes one or more of the following: uplink data reception, uplink control information reception, preamble detection, or uplink sounding reference signal reception.
The method according to claim 11, wherein the downlink communication comprises downlink data transmission, and/or, downlink control information transmission.
The method according to any one of claims 11-13, wherein the uplink communication or downlink communication with the terminal, the uplink communication or the downlink communication and the one or more CSI- Corresponding to at least one CSI-RS in the RS, including:

Use a first resource to perform uplink communication or downlink communication with the terminal, where the first resource corresponds to the at least one CSI-RS of the one or more CSI-RSs.
The method according to claim 14, wherein the first resource comprises one or more of time domain resources, frequency domain resources, space domain resources, or code domain resources.
The method according to claim 14 or 15, wherein the method further comprises:

Receiving information related to the first resource from the terminal, where the information related to the first resource is used to indicate the first resource.
The method according to any one of claims 14-16, wherein the using the first resource to perform uplink communication or downlink communication with the terminal comprises:

Use the first resource to perform uplink communication or downlink communication with the terminal under a first condition, where the first condition includes one or more of the following: within a valid period of time, sending to the terminal Before updating information, before sending a measurement instruction to the terminal, or before obtaining a resource different from the first resource; the update information is used to instruct to update the configuration of the one or more CSI-RS; the measurement The indication is used to indicate the measurement of the one or more CSI-RSs.
The method according to any one of claims 11-17, wherein the method further comprises:

Sending configuration information to the terminal, where the configuration information is used to configure the one or more CSI-RSs.
The method according to claim 18, wherein the configuration information is included in one or more of RRC dedicated information, random access response, paging message, or system information.
A communication device, characterized in that the device includes: a processing module and a transceiver module;

The processing module is configured 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 further configured to control the transceiver module to perform uplink communication or downlink communication with the network device according to the measurement result of the one or more CSI-RS.
The apparatus according to claim 20, wherein the uplink communication comprises one or more of the following: uplink data transmission, uplink control information transmission, preamble transmission, or uplink sounding reference signal transmission.
The apparatus according to claim 20, wherein the downlink communication comprises downlink data reception, and/or downlink control information reception.
The device according to any one of claims 20-22, wherein:

The processing module is specifically configured to obtain the first resource according to the measurement result of the one or more CSI-RSs,

And control the transceiver module to use the first resource to perform uplink communication or downlink communication with the network device.
The apparatus according to claim 23, wherein the first resource comprises one or more of time domain resources, frequency domain resources, space domain resources, or code domain resources.
The device according to claim 23 or 24, wherein:

The transceiver module is further configured 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.
The device according to any one of claims 23-25, wherein:

The processing module is further specifically configured to control the transceiver module to use the first resource to perform uplink communication or downlink communication with the network device under a first condition, where the first condition includes one of the following Or multiple types: within the valid time period, before receiving the update information from the network device, before receiving the measurement instruction from the network device, or before measuring a resource different from the first resource; the update information is used Instructing to update the configuration of the one or more CSI-RS; the measurement instruction is used to instruct to measure the one or more CSI-RS.
The device according to any one of claims 20-26, wherein:

The transceiver module is further configured to receive configuration information from the network device, where the configuration information is used to configure the one or more CSI-RS.
The apparatus according to claim 27, wherein the configuration information is included in one or more of RRC dedicated information, paging message, or system information.
The device according to any one of claims 20-28, wherein:

The processing module is specifically configured to control the transceiver module to perform the uplink communication or the downlink communication with the network device in the RRC-inactive state.
A communication device, characterized in that the device includes: a transceiver module;

The transceiver module is configured to send one or more channel state information reference signals CSI-RS to a terminal, where the one or more CSI-RS are used for measurement in a radio resource control inactive RRC-inactive state;

The transceiver module is further configured to perform uplink communication or downlink communication with the terminal, and the uplink communication or the downlink communication corresponds to at least one of the one or more CSI-RSs.
The apparatus according to claim 30, wherein the uplink communication comprises one or more of the following: uplink data reception, uplink control information reception, preamble detection, or uplink sounding reference signal reception.
The apparatus according to claim 30, wherein the downlink communication comprises downlink data transmission, and/or downlink control information transmission.
The device according to any one of claims 30-32, wherein:

The transceiver module is specifically configured to use a first resource to perform uplink communication or downlink communication with the terminal, wherein the first resource corresponds to the at least one CSI-RS of the one or more CSI-RSs .
The apparatus according to claim 33, wherein the first resource comprises one or more of time domain resources, frequency domain resources, space domain resources, or code domain resources.
The device according to claim 33 or 34, wherein:

The transceiver module is further configured to receive information related to the first resource from the terminal, where the information related to the first resource is used to indicate the first resource.
The device according to any one of claims 33-35, wherein:

The transceiver module is further specifically configured to use the first resource to perform uplink communication or downlink communication with the terminal under a first condition, where the first condition includes one or more of the following: Within the time period, before sending update information to the terminal, before sending a measurement instruction to the terminal, or before obtaining a resource different from the first resource; the update information is used to instruct to update the one or more CSI-RS configuration; the measurement indication is used to instruct to measure the one or more CSI-RS.
The device according to any one of claims 30-36, wherein:

The transceiver module is further configured to send configuration information to the terminal, where the configuration information is used to configure the one or more CSI-RS.
The apparatus according to claim 37, wherein the configuration information is included in one or more of RRC dedicated information, paging message, or system information.
A communication device, characterized in that the device is used to implement the method according to any one of claims 1 to 10, or is used to implement the method according to any one of claims 11 to 19.
A communication device, characterized by comprising: a processor, the processor is coupled with a memory, the memory is used to store a program or instruction, when the program or instruction is executed by the processor, the device The method according to any one of claims 1 to 10 is performed, or the method according to any one of claims 11 to 19 is performed.
A computer-readable medium having a computer program or instruction stored thereon, wherein the computer program or instruction when executed causes a computer to execute the method according to any one of claims 1 to 10 or as claimed in claim The method of any one of 11-19.
A computer program product, the computer program product comprising computer program code, wherein when the computer program code is run on a computer, the computer is caused to implement the method or the method according to any one of claims 1 to 10 The method described in any one of claims 11 to 19 is implemented.
A chip, characterized by comprising: a processor, the processor is coupled with a memory, the memory is used to store a program or instruction, when the program or instruction is executed by the processor, the chip is executed The method according to any one of claims 1 to 10 or the method according to any one of claims 11 to 19.
A communication system, characterized by comprising: the device according to any one of claims 20-29, and/or the device according to any one of claims 30-38.