WO2021134367A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2021134367A1
WO2021134367A1 PCT/CN2019/130207 CN2019130207W WO2021134367A1 WO 2021134367 A1 WO2021134367 A1 WO 2021134367A1 CN 2019130207 W CN2019130207 W CN 2019130207W WO 2021134367 A1 WO2021134367 A1 WO 2021134367A1
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WO
WIPO (PCT)
Prior art keywords
terminal
resource
network device
csi
communication
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Application number
PCT/CN2019/130207
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English (en)
Chinese (zh)
Inventor
骆喆
陈雁
张云昊
徐修强
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201980099807.6A priority Critical patent/CN114287154A/zh
Priority to PCT/CN2019/130207 priority patent/WO2021134367A1/fr
Publication of WO2021134367A1 publication Critical patent/WO2021134367A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal

Definitions

  • the embodiments of the present application relate to the field of wireless communication, and in particular, to a communication method and device.
  • 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.
  • RRC-connected radio resource control connected
  • RRC-idle radio resource control idle
  • RRC-idle radio resource control idle
  • RRC-inactive radio resource control inactive
  • the terminal 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • channel state information reference signals channel state information reference signals
  • 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.
  • the method described in the first aspect can determine a transmission resource with better channel quality for the terminal.
  • the terminal 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.
  • the connected state or other states determine the measurement overhead caused by transmission resources with better channel quality.
  • 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 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.
  • the downlink communication includes downlink data reception, and/or downlink control information reception.
  • 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.
  • the flexibility and diversity of the downlink communication between the terminal and the network device can also be improved.
  • 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.
  • 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
  • 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.
  • the first resource includes one or more of time domain resources, frequency domain resources, space domain resources, or code domain resources.
  • 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.
  • the method further includes: sending to the network device information related to the first resource and used to indicate the first resource Information.
  • 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.
  • 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.
  • 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.
  • the method further includes: receiving configuration information for configuring the one or more CSI-RSs from the network device .
  • 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.
  • the configuration information is included in one of RRC dedicated information, random access response, paging message, or system information, or Many kinds.
  • 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.
  • 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.
  • 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.
  • 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.
  • the method described in the first aspect can determine a transmission resource with better channel quality for the terminal.
  • the terminal 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.
  • the connected state or other states determine the measurement overhead caused by transmission resources with better channel quality.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 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.
  • the flexibility and diversity of the uplink communication between the network device and the terminal can also be improved.
  • the downlink communication includes downlink data transmission, and/or downlink control information transmission.
  • 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.
  • 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.
  • 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.
  • the first resource includes one or more of time domain resources, frequency domain resources, space domain resources, or code domain resources.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the method further includes: sending configuration information for configuring the one or more CSI-RSs to the terminal.
  • 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.
  • the configuration information is included in one of RRC dedicated information, random access response, paging message, or system information, or Many kinds.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • an embodiment of the present application provides a computer-readable medium on which a computer program or instruction is stored.
  • the computer program or instruction 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.
  • an embodiment of the present application provides a computer-readable medium on which a computer program or instruction is stored.
  • the computer program or instruction 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.
  • 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.
  • 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 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the application
  • FIGS. 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.
  • 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.
  • LTE long term evolution
  • 5G fifth generation
  • NR NR
  • wireless fidelity wireless-fidelity
  • WiFi wireless-fidelity
  • 3GPP third-generation partnership plan
  • 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.
  • FIG. 1 it is a schematic diagram of the architecture of a communication system 10 provided by an embodiment of this application.
  • 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.
  • 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.
  • VR virtual reality
  • AR augmented reality
  • industrial control industrial control
  • in-vehicle terminal equipment unmanned driving (self-driving) terminal
  • assisted driving terminal remote medical (remote medical) terminal
  • smart grid (smart grid) 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.
  • 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.
  • 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.
  • the terminal may be a terminal in the Internet of Things (IoT) system.
  • IoT Internet of Things
  • the terminal in this application may be a terminal in machine type communication (MTC).
  • MTC machine type communication
  • 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.
  • V2X vehicle to everything
  • LTE-V long term evolution vehicle
  • V2V vehicle to vehicle
  • 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.
  • the terminal 102 may be in the RRC-connected state, the RRC-idle state, or the RRC-inactive state.
  • 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.
  • 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:
  • 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 .
  • 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.
  • RRC release RRC release
  • 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.
  • 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.
  • 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.
  • 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.
  • RRC setup request RRC setup request
  • RRC setup RRC setup
  • RRC reject RRC reject
  • 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.
  • 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.
  • 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.
  • RRC resume request RRC resume request
  • RRC setup RRC setup
  • RRC resume RRC resume
  • 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.
  • RRC release RRC release
  • the network device 101 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.
  • 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.
  • 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.
  • the terminal 102 cannot perform unicast data transmission with the network device 101.
  • 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.
  • the network device 101 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.
  • the terminal 102 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.
  • 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.
  • SSB synchronization signal blocks
  • 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.
  • an embodiment of the present application provides a communication 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.
  • each network element in FIG. 1 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 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.
  • 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.
  • 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.
  • 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.
  • 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).
  • 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.
  • 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.
  • 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.
  • the communication method includes step 201 to step 203.
  • Step 201 The network device sends one or more CSI-RS to the terminal.
  • the network device may be the network device 101 in FIG. 1 or a component in the network device 101 in FIG. 1.
  • 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.
  • the terminal may be any terminal 102 in the RRC-inactive state in FIG. 1, or may be a component in the terminal 102.
  • 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.
  • CSI-RS may correspond to physical resources.
  • 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.
  • 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.
  • the uplink resource can be used for the uplink communication between the terminal and the network device.
  • 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.
  • 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.
  • 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.
  • CG grant
  • GF uplink grant free
  • the network device when the terminal is in the RRC-inactive state, the network device sends one or more CSI-RS to the terminal.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the network device 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.
  • the terminal 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.
  • 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.
  • the network device 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.
  • 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).
  • RSRP reference signal received power
  • RSSI reference signal received quality
  • SINR signal to interference plus noise ratio
  • SINR signal to interference plus noise ratio
  • RSSI received signal strength indicator
  • 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.
  • 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 .
  • 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.
  • the terminal may use the RSRP obtained by this measurement as the CSI-RS measurement result.
  • 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.
  • the weight/filter coefficient corresponding to each first parameter is the same or different.
  • 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.
  • 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. .
  • 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
  • the terminal is in the third cycle , i.e.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the paging message is used for paging the terminal by the network device.
  • 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.
  • 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.
  • SDAP service data adaptation protocol
  • PDCP packet data convergence protocol
  • RLC radio link control
  • 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.
  • 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
  • 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.
  • 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.
  • the first resource when the terminal performs uplink communication with the network device, the first resource includes the first uplink resource.
  • 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.
  • 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.
  • the terminal 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.
  • one CSI-RS corresponds to one uplink resource
  • one CSI-RS corresponds to one uplink resource and one downlink resource
  • 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.
  • 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.
  • the first resource includes the first downlink resource.
  • 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.
  • 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.
  • 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.
  • one CSI-RS corresponds to one uplink resource
  • 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.
  • the terminal 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.
  • 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.
  • uplink data transmission may include one or more of the following: uplink data transmission, uplink control information transmission, preamble transmission, or uplink sounding reference signal (SRS) transmission.
  • SRS uplink sounding reference signal
  • 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):
  • the uplink data can be carried in the PUSCH.
  • the first uplink resource may be referred to as a resource for transmitting uplink data or a resource for transmitting PUSCH.
  • the terminal 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.
  • DMRS demodulation reference signal
  • 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.
  • 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.
  • the information related to the first uplink resource may be used to indicate the first uplink resource.
  • 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.
  • the information related to the first downlink resource may be used to indicate the first downlink resource.
  • 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.
  • the network device 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.
  • 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)
  • the first downlink resource or first downlink resource
  • the corresponding relationship of) can be shown in Table 2.
  • CSI-RS identification Downlink resources CSI-RS ID1 Downlink resource 1 CSI-RS ID2 Downlink resource 2 CSI-RS ID3 Downlink resource 3
  • 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. .
  • 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.
  • the terminal may indicate the first resource to the network device through information related to the first resource.
  • 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.
  • PHY physical
  • media access control media access control
  • RRC 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.
  • uplink control information uplink control information, UCI
  • the first uplink resource may be referred to as a resource for transmitting uplink control information or a transmission resource for uplink control information.
  • 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.
  • acknowledgement ACK
  • NACK channel state information
  • CQI channel quality indicator
  • PMI precoding matrix indicator
  • RI rank indication
  • SR scheduling request
  • 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.
  • the information related to the first resource can refer to the above situation (1.1), and will not be repeated.
  • the terminal uses the first uplink resource to send a preamble (also referred to as a preamble for short) to the network device.
  • a preamble also referred to as a preamble for short
  • the preamble is used to initiate a random access request to the network device.
  • the first uplink resource may be referred to as a preamble transmission resource, a preamble transmission resource, or a preamble resource.
  • 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.
  • 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.
  • the sequence and/or resource of the preamble has a corresponding relationship with the first downlink resource
  • 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.
  • 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.
  • the information related to the first resource can refer to the above situation (1.1), which will not be repeated.
  • 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.
  • the second resource may include a second uplink resource or a second downlink resource.
  • 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.
  • 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.
  • the terminal can use the first uplink resource to send uplink data and preamble to the network device.
  • the first uplink resource may be referred to as a preamble transmission resource or a preamble transmission resource.
  • the terminal may send the uplink data and the preamble to the network device.
  • 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.
  • the information related to the first resource can refer to the above situation (1.1), which will not be repeated.
  • the terminal can use the first uplink resource to send an uplink sounding reference signal (sounding reference signal, SRS) to the network device.
  • SRS sounding reference signal
  • the first uplink resource may be referred to as SRS transmission resource or SRS transmission resource.
  • 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.
  • the information related to the first resource can refer to the above situation (1.1), which will not be repeated.
  • the terminal can use the first uplink resource to send uplink data and uplink control information to the network device.
  • 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.
  • downlink communication may include downlink data reception, and/or downlink control information reception.
  • 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):
  • the terminal uses the first downlink resource to receive downlink data from the network device.
  • the downlink data can be carried in the PDSCH.
  • the first downlink resource may be referred to as a resource for transmitting downlink data or a resource for transmitting PDSCH.
  • the terminal uses the first downlink resource to receive downlink control information from the network device.
  • 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.
  • DCI downlink control information
  • the first downlink resource may be referred to as a resource for transmitting downlink control information or a transmission resource for downlink control information.
  • 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.
  • the terminal uses the first downlink resource to receive downlink data and downlink control information from the network device.
  • 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.
  • the network device can perform uplink communication or downlink communication with the terminal.
  • uplink communication may include one or more of the following: uplink data reception, uplink control information reception, preamble detection, or SRS reception.
  • 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
  • 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.
  • 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.
  • 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.
  • the network device 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.
  • the network device may also receive information related to the first resource from the terminal.
  • the information related to the first resource can refer to the above situation (1.1), which will not be repeated.
  • the downlink communication may include downlink data transmission, and/or, downlink control information transmission.
  • 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.
  • 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.
  • 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.
  • the method described in Figure 2 can determine the transmission resource with better transmission resource quality for the terminal.
  • the terminal 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.
  • the connected state or other states determine the measurement overhead caused by transmission resources with better channel quality.
  • the method shown in FIG. 2 further includes an optional step 301.
  • Step 301 The network device sends configuration information to the terminal.
  • 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.
  • 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.
  • CORESET downlink control resource set
  • the configuration information 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.
  • the configuration information 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.
  • 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.
  • the correspondence between the CSI-RS configuration and the CSI-RS configuration identifier may also be predefined.
  • 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.
  • 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.
  • the network device may send RRC dedicated information to the terminal, where the RRC dedicated information includes the configuration information.
  • 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.
  • 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.
  • the network device may send a paging message to the terminal, and the paging message includes the configuration information.
  • the network device sends a paging message to the terminal, and the paging message includes the configuration of the one or more CSI-RSs.
  • the system information may be carried by a system information block (SIB).
  • SIB system information block
  • 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.
  • 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
  • the terminal determines the configuration of one or more CSI-RSs according to the configuration identifiers of one or more CSI-RSs.
  • 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.
  • the network device and the terminal 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.
  • 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.
  • the update information or measurement instruction is sent.
  • 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.
  • the network device may send the update information or measurement instruction when sending the downlink control information to the terminal.
  • the network device sends downlink control information to the terminal, where the downlink control information includes the update information or the measurement indication.
  • the network device may send the update information or measurement instruction when sending MAC signaling to the terminal.
  • the network device sends MAC signaling to the terminal, and the MAC signaling carries the update information or the measurement indication.
  • the network device may send the update information or measurement indication when sending RRC signaling to the terminal.
  • the network device sends RRC signaling to the terminal, and the RRC signaling carries the update information or the measurement indication.
  • 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.
  • 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.
  • 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.
  • time 1 may be the time when the network device obtains the first resource
  • time 2 may be the time when the network device completes uplink communication or downlink communication with the terminal.
  • time 1 may be the time when the network device obtains the first resource
  • time 2 may be the time when the network device sends configuration information to the terminal next time.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the terminal 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.
  • the terminal when the terminal receives the downlink control information from the network device, it receives the update information.
  • the terminal receives downlink control information from a network device, where the downlink control information includes the update information or measurement indication.
  • the terminal when the terminal receives the MAC signaling from the network device, it receives the update information.
  • the terminal receives MAC signaling from a network device, and the MAC signaling carries the update information or measurement indication.
  • the terminal when the terminal receives the RRC signaling from the network device, it receives the update information.
  • the terminal receives RRC signaling from a network device, and the RRC signaling carries the update information or measurement indication.
  • 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.
  • 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,
  • 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.
  • the effective duration may be the duration between time 3 and time 4.
  • 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.
  • time 4 may be the time when the terminal obtains the first resource
  • time 2 may be the time when the terminal receives the configuration information from the network device next time.
  • 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.
  • 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 communication method includes steps 401-405.
  • Step 401 The network device sends configuration information to the terminal through RRC dedicated information.
  • the network device may be the network device 101 in FIG. 1 or a component in the network device 101 in FIG. 1.
  • 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.
  • the terminal may be any terminal 102 in FIG. 1 or a component in the terminal 102.
  • 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.
  • 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.
  • 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.
  • the network device uses the first uplink resource to receive uplink data from the terminal.
  • step 402 to step 405 can be referred to the corresponding introduction in step 201 to step 203 above, and will not be repeated.
  • 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.
  • the network device updates the configuration of the one or more CSI-RSs
  • 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
  • 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.
  • 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.
  • the terminal monitors or receives paging messages or system information.
  • 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.
  • the third resource may include time domain resources, and/or frequency domain resources, and/or space domain resources.
  • the terminal when the terminal is in the RRC-connected state, the terminal can receive configuration information from the network device through RRC dedicated information.
  • the terminal 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.
  • 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.
  • the communication method includes step 501-step 506.
  • Step 501 The network device sends configuration information to the terminal through RRC dedicated information.
  • the network device may be the network device 101 in FIG. 1 or a component in the network device 101 in FIG. 1.
  • 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.
  • the terminal may be any terminal 102 in FIG. 1 or a component in the terminal 102.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the terminal uses the first downlink resource to receive the RAR or message B from the network device.
  • the above-mentioned step 505-step 506 is a two-step random access process.
  • 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.
  • step 502-step 506 can be referred to the corresponding introduction in step 201-step 203 above, and will not be repeated.
  • the network device 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;
  • the terminal 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.
  • 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.
  • the terminal monitors or receives paging messages or system information.
  • 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.
  • the third resource may include time domain resources, and/or frequency domain resources, and/or space domain resources.
  • the terminal when the terminal is in the RRC-connected state, the terminal can receive the configuration information from the network device through RRC dedicated information.
  • the terminal 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.
  • 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.
  • 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.
  • the terminal may be any terminal 102 in FIG. 1 or a component in the terminal 102.
  • 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.
  • 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.
  • the network device may be the network device 101 in FIG. 1 or a component in the network device 101 in FIG. 1.
  • 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.
  • the terminal uses the second downlink resource to receive the RAR and configuration information from the network device.
  • 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.
  • the network device uses the first uplink resource to receive uplink data from the terminal.
  • Optional step 607 The network device uses the first downlink resource to send a message 4 (message 4) to the terminal.
  • 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.
  • the network device may also use the first downlink resource to send the ACK or NACK of the uplink data to the terminal.
  • the terminal uses the first downlink resource to receive the message 4 from the network device.
  • the terminal may also use the first downlink resource to receive the ACK or NACK of the uplink data from the network device.
  • step 603 to step 607 can be referred to the corresponding introduction in step 201 to step 203 above, and will not be repeated.
  • step 601-step 602, and step 606-step 607 are four-step random access procedures.
  • the second uplink resource can be used to realize the transmission of the preamble
  • the second downlink resource can be used to realize the transmission of the RAR.
  • the preamble resource There is no need to obtain the preamble resource before the four-step random process, which reduces the measurement overhead.
  • the first uplink resource obtained by measuring one or more CSI-RS can be used to transmit uplink data
  • 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.
  • 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.
  • the network device 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.
  • 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.
  • the terminal monitors or receives paging messages or system information.
  • 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.
  • the third resource may include time domain resources, and/or frequency domain resources, and/or space domain resources.
  • 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 communication method includes step 701 to step 706.
  • Step 701 The network device sends a paging message to the terminal.
  • the network device may be the network device 101 in FIG. 1 or a component in the network device 101 in FIG. 1.
  • 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.
  • 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.
  • the terminal receives the paging message from the network device.
  • 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.
  • the terminal uses the fourth resource to receive downlink data and configuration information from the network device.
  • the network device may not send configuration information to the terminal.
  • 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.
  • 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.
  • 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.
  • the network device uses the first uplink resource to receive the ACK or NACK of the downlink data from the terminal.
  • step 703 to step 706 can be referred to the introduction in step 201 to step 203 above, and will not be repeated.
  • 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.
  • 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.
  • the terminal monitors the paging message or system information.
  • 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.
  • the third resource may include time domain resources, and/or frequency domain resources, and/or space domain resources.
  • 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.
  • the network device sends the configuration information to the terminal through a paging message.
  • 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.
  • the network device may be the network device 101 in FIG. 1 or a component in the network device 101 in FIG. 1.
  • 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.
  • the terminal may be any terminal 102 in FIG. 1 or a component in the terminal 102.
  • 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.
  • 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.
  • 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.
  • the specific introduction of the configuration information can refer to the corresponding introduction in the foregoing step 301, which will not be repeated.
  • the terminal receives the configuration information from the network device through a paging message.
  • 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.
  • 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.
  • uplink communication includes preamble transmission, or uplink data transmission and preamble transmission.
  • 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.
  • 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.
  • the downlink communication includes one or more of downlink control information transmission, RAR/message B transmission, or downlink data transmission.
  • 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.
  • 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.
  • 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.
  • step 802 to step 805 can be referred to the introduction in step 201 to step 203 above, and will not be repeated.
  • 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 .
  • 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.
  • the terminal monitors or receives paging messages or system information.
  • 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.
  • the third resource may include time domain resources, and/or frequency domain resources, and/or space domain resources.
  • the terminal 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.
  • 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.
  • the network device may be the network device 101 in FIG. 1 or a component in the network device 101 in FIG. 1.
  • 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.
  • 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.
  • 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.
  • 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.
  • the specific introduction of the configuration information can refer to the corresponding introduction in the foregoing step 301, which will not be repeated.
  • the terminal receives the configuration information from the network device through a paging message.
  • 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.
  • 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.
  • 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.
  • 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.
  • the third resource may include time domain resources, and/or frequency domain resources, and/or space domain resources.
  • the terminal indicating the first resource to the network device includes: the terminal sends information related to the first resource to the network device.
  • 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.
  • the terminal 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.
  • 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.
  • 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
  • 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.
  • 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.
  • the processor 1001 may include a transceiver unit for implementing receiving and sending functions.
  • 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.
  • the apparatus 100 may include a circuit, which may implement the sending or receiving or communication functions in the foregoing method embodiments.
  • 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.
  • data may also be stored in the memory.
  • 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.
  • 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.
  • 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.
  • CMOS complementary metal oxide semiconductor
  • NMOS nMetal-oxide-semiconductor
  • PMOS P-type Metal oxide semiconductor
  • BJT bipolar junction transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium arsenide
  • 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.
  • the device may be:
  • the IC collection may also include storage components for storing data and/or instructions;
  • ASIC such as modem (MSM)
  • FIG. 11 provides a schematic structural diagram of a terminal.
  • the terminal can be applied to the scenario shown in FIG. 1.
  • FIG. 11 only shows the main components of the terminal.
  • 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.
  • 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.
  • 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. .
  • 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 .
  • 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.
  • 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.
  • the baseband processor and the central processing unit may also be independent processors, and are interconnected by technologies such as a bus.
  • 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.
  • 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.
  • 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.
  • 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.
  • the receiving unit may also be called a receiver, a receiver, a receiving circuit, etc.
  • the sending unit may be called a transmitter, a transmitter, or a transmitting circuit, etc.
  • 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.
  • the device may be a terminal or a component of the terminal (for example, an integrated circuit, a chip, etc.).
  • 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).
  • a transceiver module 1201 or referred to as a transceiving unit
  • a storage module 1203 or referred to as a storage unit).
  • 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.
  • 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.
  • the device has the function of implementing the network device described in the embodiment of this application.
  • 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.
  • 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.
  • an apparatus 120 may include: a processing module 1202 and a transceiver module 1201.
  • 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.
  • the terminal 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.
  • the terminal 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.
  • 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 terminal 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.
  • the downlink communication includes downlink data reception, and/or downlink control information reception.
  • the terminal for example, the apparatus 120
  • the terminal 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
  • the flexibility and diversity of the downlink communication between the terminal and the network device can also be improved.
  • 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.
  • the terminal 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
  • 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.
  • the first resource includes one or more of time domain resources, frequency domain resources, space domain resources, or code domain resources.
  • the terminal for example, the device 120
  • the terminal 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.
  • 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.
  • 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.
  • 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 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.
  • 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.
  • the terminal 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.
  • 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.
  • 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.
  • 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.
  • the configuration information is included in one or more of RRC dedicated information, paging message, or system information.
  • 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.
  • 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.
  • the terminal 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.
  • the terminal 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.
  • 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.
  • 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.
  • the terminal for example, the device 120
  • 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 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.
  • 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.
  • the terminal 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.
  • a device 120 may include: a transceiver module 1201.
  • 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.
  • the network device 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.
  • 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.
  • 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 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
  • the flexibility and diversity of the uplink communication between the network device and the terminal can also be improved.
  • the downlink communication includes downlink data transmission and/or downlink control information transmission.
  • 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.
  • downlink communication such as downlink control information transmission
  • the flexibility and diversity of the downlink communication between the network equipment and the terminal can also be improved.
  • 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.
  • the network device 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.
  • the first resource includes one or more of time domain resources, frequency domain resources, space domain resources, or code domain resources.
  • 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 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.
  • 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.
  • 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.
  • the network device 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.
  • the first resource was used for uplink communication or downlink communication with the terminal.
  • 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.
  • 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.
  • 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.
  • the configuration information is included in one or more of RRC dedicated information, paging message, or system information.
  • the network device 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.
  • the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • 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 processing unit used to execute these technologies at a communication device 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.
  • 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.
  • 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.
  • 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.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic RAM
  • DRAM dynamic random access memory
  • 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 serial DRAM, SLDRAM
  • direct rambus RAM direct rambus RAM
  • 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.
  • the computer program product includes one or more computer instructions.
  • 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.
  • the computer instructions may be transmitted from a website, computer, server, or data center.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the corresponding relationship shown in some rows may not be configured.
  • 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.
  • 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.
  • the systems, devices, and methods described in this application can also be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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. .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention, selon certains modes de réalisation, se rapporte au domaine de la communication radio, et fournit un procédé et un appareil de communication permettant d'améliorer la performance de communication entre un terminal et un dispositif de réseau lorsque le terminal est en communication avec le dispositif de réseau. Le procédé consiste à : mesurer, par un terminal, lorsqu'il est dans un état inactif de commande de ressource radio, un ou plusieurs signaux de référence d'informations d'état de canal ; et effectuer une communication de liaison montante ou une communication de liaison descendante avec un dispositif de réseau conformément à un résultat de mesure du ou des signaux de référence d'informations d'état de canal.
PCT/CN2019/130207 2019-12-30 2019-12-30 Procédé et appareil de communication WO2021134367A1 (fr)

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CN201980099807.6A CN114287154A (zh) 2019-12-30 2019-12-30 通信方法及装置
PCT/CN2019/130207 WO2021134367A1 (fr) 2019-12-30 2019-12-30 Procédé et appareil de communication

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CN114867124B (zh) * 2022-04-28 2023-05-26 新华三工业互联网有限公司 一种5g空口时延抖动优化方法及装置

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WO2019190383A1 (fr) * 2018-03-26 2019-10-03 Telefonaktiebolaget Lm Ericsson (Publ) Suspension/reprise de mesures dans un état rrc inactif
CN110324809A (zh) * 2018-03-30 2019-10-11 维沃移动通信有限公司 非同步上行传输方法、终端及网络设备
WO2019245335A1 (fr) * 2018-06-21 2019-12-26 삼성전자 주식회사 Procédé et appareil permettant de prendre en charge une double connexion de mode d'inactivation rrc dans un système de communication mobile de prochaine génération

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CN110168961A (zh) * 2016-08-11 2019-08-23 株式会社Ntt都科摩 选择接收资源的方法和csi-rs发送的方法
WO2019137424A1 (fr) * 2018-01-11 2019-07-18 维沃移动通信有限公司 Procédé de mesure pour signal de référence, et terminal utilisateur
WO2019190383A1 (fr) * 2018-03-26 2019-10-03 Telefonaktiebolaget Lm Ericsson (Publ) Suspension/reprise de mesures dans un état rrc inactif
CN110324809A (zh) * 2018-03-30 2019-10-11 维沃移动通信有限公司 非同步上行传输方法、终端及网络设备
WO2019245335A1 (fr) * 2018-06-21 2019-12-26 삼성전자 주식회사 Procédé et appareil permettant de prendre en charge une double connexion de mode d'inactivation rrc dans un système de communication mobile de prochaine génération

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