A communication method and related device

Abstract

The application provides a communication method and related equipment, and relates to the technical field of communication. When a terminal device detects that a beam management condition is met, the terminal device automatically sends notification information about the beam management condition to a network device to trigger a beam management process, thereby avoiding the method in the prior art in which the terminal device can only perform beam management after feeding back a beam measurement result according to the requirements of the network device, and thereby improving the efficiency of identifying an optimal beam.

Description

A communication method and related equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on January 17, 2024, with application number 202410071403.9 and invention name “A communication method and related equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a communication method and related equipment. Background Art

[0003] With the development of mobile communication technologies, especially the fifth-generation mobile networks (5G), the capabilities of communication systems are continuously enhanced. Specifically, 5G communication systems can provide enhanced mobile broadband (eMBB), with faster connections, higher throughput, and greater capacity, as well as ultra-reliable low-latency communications (uRLLC). This enables network applications in mission-critical scenarios that require uninterrupted and stable data links, such as extended reality (XR) and cloud gaming, meeting the ultra-high reliability and low latency requirements of wireless communication networks.

[0004] The communication system may include network devices such as base stations. Each base station can support communication with multiple terminal devices, where the terminal devices may be user equipment (UE). In many mission scenarios, in order to enhance the communication quality between the terminal device and the network device, the network device will send a pilot signal for beam management to the terminal device. After the terminal device receives the pilot signal, it will measure the quality and characteristics of the multiple beams sent or received to identify the optimal beam, and feed the measurement results back to the network device. The network device can then indicate the optimal beam to the terminal device, allowing the terminal device and the network device to communicate via the optimal beam.

[0005] However, there is a time delay in the process from when the terminal device feeds back the measurement result of the pilot signal based on the configuration of the network device to when the network device receives the measurement result, resulting in low efficiency in identifying the optimal beam. Summary of the Invention

[0006] The purpose of this application is to provide a communication method and related equipment that can improve the efficiency of identifying the optimal beam.

[0007] In a first aspect, the present application provides a communication method for mobile phones and computer terminal devices, the method comprising: if it is detected that the terminal device meets the beam management conditions, sending notification information to the network device, the beam management conditions being related to the link quality of the terminal device's reference signal and / or the link quality associated with the terminal device's channel; and receiving feedback information regarding the notification information sent by the network device. Thus, when the terminal device detects that the beam management conditions are met, it automatically sends notification information indicating that the beam management conditions have been met to the network device to trigger the beam management process, thereby circumventing the method in the related art where the terminal device needs to feedback the beam measurement results according to the requirements of the network device before beam management can be performed, thereby improving the efficiency of identifying the optimal beam.

[0008] In some specific implementations, if it is detected that the terminal device meets the beam management conditions, notification information is sent to the network device, including: if it is detected that the link quality value of the reference signal of the terminal device is greater than or equal to the first threshold, the link quality value associated with the channel of the terminal device is less than the second threshold, the link quality value of the reference signal of the terminal device is greater than or equal to the first threshold and the link quality value associated with the channel of the terminal device is less than the second threshold, the link quality value of the reference signal of the terminal device is better than the link quality value associated with the channel of the terminal device, and the quality change value of the link quality value associated with the channel of the terminal device within the first time period is greater than the change threshold, then notification information is sent to the network device. Thus, when the terminal device detects that the beam management conditions are met, it automatically sends notification information that the beam management conditions have been met to the network device to trigger the beam management process, thereby avoiding the method in the related art that the terminal device needs to feedback the beam measurement results according to the requirements of the network device before beam management can be performed, thereby improving the efficiency of identifying the optimal beam.

[0009] In some specific implementations, the method for obtaining the link quality value of the reference signal includes: determining a first reference signal based on a reference signal used for candidate beam detection and / or based on a target reference signal configured by a network device; and obtaining the link quality value of the first reference signal.

[0010] In some specific implementations, if it is detected that the link quality value of the reference signal of the terminal device is greater than or equal to the first threshold, a notification message is sent to the network device, including: if it is detected that the reference signal received power RSRP value of the first reference signal is greater than or equal to the first threshold, and / or the signal to interference plus noise ratio SINR value of the first reference signal is greater than or equal to the first threshold, a notification message is sent to the network device. Thus, when the terminal device detects that the beam management conditions are met, the notification message that the beam management conditions have been met is automatically sent to the network device to trigger the beam management process, thereby avoiding the method in the related art that the terminal device needs to feedback the beam measurement results according to the requirements of the network device before performing beam management, thereby improving the efficiency of identifying the optimal beam.

[0011] In some specific implementations, the first threshold is a value configured by a network device, or a value predefined by a protocol.

[0012] In some specific implementations, the first threshold is the same value as the threshold used for candidate beam detection.

[0013] In some specific implementations, the block error rate corresponding to the first threshold is the product of the block error rate corresponding to the threshold of candidate beam detection and a first scaling factor, where the first scaling factor is a coefficient configured by a network device.

[0014] In some specific implementations, a method for acquiring a link quality value associated with a channel includes: acquiring the link quality value associated with the channel according to a second reference signal.

[0015] In some specific implementations, the method for determining the second reference signal includes: determining the second reference signal based on a reference signal used for beam failure detection; and / or determining the second reference signal based on a target reference signal configured by a network device; and / or determining the second reference signal through a demodulation reference signal DMRS associated with a physical downlink control channel PDCCH; and / or determining the second reference signal through a quasi-co-located reference signal of a DMRS associated with the PDCCH; and / or determining the second reference signal through a reference signal associated with an activated transmission configuration indication TCI state; and / or determining the second reference signal through a reference signal associated with the TCI state corresponding to the control resource set CORESET.

[0016] In some specific implementations, if it is detected that the link quality value associated with the channel of the terminal device is less than the second threshold, a notification message is sent to the network device, including: if it is detected that the RSRP value of the second reference signal is less than the second threshold, and / or the SINR value of the second reference signal is less than the second threshold, a notification message is sent to the network device. Thus, when the terminal device detects that the beam management conditions are met, it automatically sends the notification message that the beam management conditions have been met to the network device to trigger the beam management process, thereby avoiding the method in the related art that the terminal device needs to feedback the beam measurement results according to the requirements of the network device before beam management can be performed, thereby improving the efficiency of identifying the optimal beam.

[0017] In some specific implementations, the second threshold is a value configured by a network device, or a value predefined by a protocol.

[0018] In some specific implementations, the block error rate corresponding to the second threshold is the product of the block error rate corresponding to the threshold for beam failure detection and a second scaling factor, where the second scaling factor is a factor configured by the network device.

[0019] In some specific implementations, if it is detected that the link quality value of the reference signal of the terminal device is greater than the link quality value associated with the channel of the terminal device, a notification message is sent to the network device, including: if it is detected that the RSRP value of the reference signal of the terminal device is greater than the RSRP value of the link associated with the channel of the terminal device, a notification message is sent to the network device; or, if it is detected that the SINR value of the reference signal of the terminal device is greater than the SINR value of the link associated with the channel of the terminal device, a notification message is sent to the network device. Thus, when the terminal device detects that the beam management conditions are met, it automatically sends the notification message that the beam management conditions have been met to the network device to trigger the beam management process, thereby avoiding the method in the related art that the terminal device needs to feedback the beam measurement results according to the requirements of the network device before beam management can be performed, thereby improving the efficiency of identifying the optimal beam.

[0020] In some specific implementations, if it is detected that the RSRP value of the reference signal of the terminal device is greater than the RSRP value of the link associated with the channel of the terminal device, a notification message is sent to the network device, including: if it is detected that the RSRP value of the reference signal of the terminal device is greater than the sum of the RSRP value of the link associated with the channel of the terminal device and the first offset, a notification message is sent to the network device. Thus, when the terminal device detects that the beam management conditions are met, the notification message that the beam management conditions have been met is automatically sent to the network device to trigger the beam management process, thereby avoiding the method in the related art that the terminal device needs to feedback the beam measurement results according to the requirements of the network device before beam management can be performed, thereby improving the efficiency of identifying the optimal beam.

[0021] In some specific implementations, if it is detected that the SINR value of the reference signal of the terminal device is greater than the SINR value of the link associated with the channel of the terminal device, a notification message is sent to the network device, including: if it is detected that the SINR value of the reference signal of the terminal device is greater than the sum of the SINR value of the link associated with the channel of the terminal device and the first offset, a notification message is sent to the network device. Thus, when the terminal device detects that the beam management conditions are met, the notification message that the beam management conditions have been met is automatically sent to the network device to trigger the beam management process, thereby avoiding the method in the related art that the terminal device needs to feedback the beam measurement results according to the requirements of the network device before beam management can be performed, thereby improving the efficiency of identifying the optimal beam.

[0022] In some specific implementations, sending the notification information to the network device includes: sending the notification information to the network device via a physical uplink control channel PUCCH and / or a physical random access channel PRACH.

[0023] In some specific implementations, sending notification information to the network device includes: sending notification information to the network device after detecting that the terminal device meets the beam management condition for the first time.

[0024] In some specific implementations, notification information is sent to the network device through the physical uplink control channel PUCCH and / or the physical random access channel PRACH, including: sending notification information to the network device through PUCCH or PRACH according to the type of beam management conditions.

[0025] In some specific implementations, the PUCCH or PRACH is associated with a channel state CSI report configuration.

[0026] In some specific implementations, sending notification information to the network device includes: sending notification information to the network device through a media access control element MAC CE, where the MAC CE includes beam management conditions, and / or first reference signal information, where the first reference signal information includes one or more of a reference signal index of the first reference signal, an RSRP value corresponding to the first reference signal, and an SINR value corresponding to the first reference signal.

[0027] In some specific implementations, notification information is sent to the network device through the media access control element MAC CE, including: carrying MAC CE in the physical uplink shared channel PUSCH scheduled by the first downlink control information DCI after the beam management condition is met, and sending notification information to the network device.

[0028] In some specific implementations, notification information is sent to the network device through the media access control element MAC CE, including: carrying MAC CE in the first configured authorized PUSCH sent after the second time when the beam management condition is met, and sending notification information to the network device.

[0029] In some specific implementations, receiving feedback information about the notification information sent by the network device includes: receiving feedback information about the notification information sent by the network device by detecting a PDCCH scheduled in a search space SS or a CORESET.

[0030] In some specific implementations, feedback information about notification information sent by a network device is received, including: if a trigger command is received, and the trigger command is used to trigger a CSI report corresponding to the configuration of a channel status CSI report, then feedback information about the notification information sent by the network device is received.

[0031] In some specific implementations, receiving feedback information about the notification information sent by the network device includes: if a CSI report returned by the network device is received, receiving feedback information about the notification information sent by the network device.

[0032] In some specific implementations, the method further includes: if no feedback information about the notification information is received after a third time period of sending the notification information to the network device, sending the notification information to the network device again.

[0033] In a second aspect, the present application provides a communication method, applied to a network device, comprising: receiving notification information sent by a terminal device, the notification information being received when the terminal device detects that a beam management condition is met, the beam management condition being related to the link quality of the terminal device's reference signal and / or the link quality associated with the terminal device's channel; and sending feedback information about the notification information to the terminal device. Thus, when the terminal device detects that the beam management condition is met, it automatically sends notification information indicating that the beam management condition has been met to the network device to trigger the beam management process, thereby circumventing the method in the related art where the terminal device needs to feedback the beam measurement results in accordance with the requirements of the network device before performing beam management, thereby improving the efficiency of identifying the optimal beam.

[0034] In some specific implementations, the beam management conditions include one or more of the following: the link quality value of the reference signal of the terminal device is greater than or equal to a first threshold, the link quality value associated with the channel of the terminal device is less than a second threshold, the link quality value of the reference signal of the terminal device is greater than or equal to the first threshold and the link quality value associated with the channel of the terminal device is less than the second threshold, the link quality value of the reference signal of the terminal device is better than the link quality value associated with the channel of the terminal device, and the quality change value of the link quality value associated with the channel of the terminal device within a first time period is greater than a change threshold. Therefore, when the terminal device detects that the beam management conditions are met, it automatically sends a notification message that the beam management conditions have been met to the network device to trigger the beam management process, thereby avoiding the method in the related art that the terminal device needs to feedback the beam measurement results according to the requirements of the network device before performing beam management, thereby improving the efficiency of identifying the optimal beam.

[0035] In some specific implementations, receiving notification information sent by the terminal device includes: receiving notification information sent by the terminal device through PUCCH and / or PRACH.

[0036] In some specific implementations, receiving notification information sent by the terminal device includes: receiving notification information sent by the terminal device at a fourth time, where the fourth time is the first time after the terminal device detects that the beam management condition is met.

[0037] In some specific implementations, notification information sent by the terminal device is received through PUCCH and / or PRACH, including: receiving notification information sent by the terminal device through PUCCH and / or PRACH according to the type of beam management conditions.

[0038] In some specific implementations, the PUCCH or PRACH is associated with a channel state CSI report configuration.

[0039] In some specific implementations, receiving notification information sent by a terminal device includes: receiving notification information sent by a terminal device through a media access control element MAC CE, where the MAC CR includes beam management conditions, and / or first reference signal information, where the first reference signal information includes one or more of a reference signal index of the first reference signal, an RSRP value corresponding to the first reference signal, and an SINR value corresponding to the first reference signal.

[0040] In some specific implementations, sending feedback information about the notification information to the terminal device includes: sending feedback information about the notification information to the terminal device by detecting a PDCCH scheduled in a search space SS or a CORESET.

[0041] In a third aspect, the present application provides a terminal device, which includes: a memory for storing computer programs or computer instructions; and a processor for executing the computer programs or computer instructions stored in the memory, so that the terminal device executes the method of the first aspect.

[0042] In a fourth aspect, the present application provides a network device, comprising: a memory for storing computer programs or computer instructions; and a processor for executing the computer programs or computer instructions stored in the memory, so that the network device executes the method of the second aspect.

[0043] In a fifth aspect, the present application provides a communication system, which includes a terminal device and a network device, the terminal device is used to execute the method as in the first aspect, and the network device is used to execute the method as in the second aspect.

[0044] In a sixth aspect, the present application provides a computer storage medium for storing a computer program, which, when executed, is used to implement the methods of the first and second aspects.

[0045] In the seventh aspect, the present application provides a communication device, which is applied to a terminal device and includes: a notification information sending module and a feedback information receiving module; the notification information sending module is used to send notification information to the network device if it is detected that the terminal device meets the beam management condition, the beam management condition indicates that the link associated with the channel of the terminal device needs to be replaced, and the notification information indicates that the link associated with the channel of the terminal device is replaced with a link of a reference signal; the feedback information receiving module is used to receive feedback information about the notification information sent by the network device, and the feedback information indicates that the link associated with the channel of the terminal device has been replaced with a link of a reference signal. Therefore, when the terminal device detects that the beam management condition is met, it automatically sends the notification information that has met the beam management condition to the network device to trigger the beam management process, thereby avoiding the method in the related art that the terminal device needs to feedback the beam measurement result according to the requirements of the network device before performing beam management, thereby improving the efficiency of identifying the optimal beam.

[0046] In the eighth aspect, the present application provides a communication device, which is applied to a network device and includes: a notification information receiving module and a feedback information sending module; the notification information receiving module is used to receive notification information sent by a terminal device, and the notification information is received when the terminal device detects that a beam management condition is met, and the beam management condition indicates that the link associated with the channel of the terminal device needs to be replaced, and the notification information indicates that the link associated with the channel of the terminal device is replaced with a link of a reference signal; the feedback information sending module is used to send feedback information about the notification information to the terminal device, and the feedback information indicates that the link associated with the channel of the terminal device has been replaced with a link of a reference signal. Thus, when the terminal device detects that the beam management condition is met, it automatically sends the notification information that has met the beam management condition to the network device to trigger the beam management process, thereby avoiding the method in the related art that the terminal device needs to feedback the beam measurement result according to the requirements of the network device before beam management can be performed, thereby improving the efficiency of identifying the optimal beam.

[0047] Based on the above technical solution, this application has the following beneficial effects:

[0048] The present application provides a communication method and related equipment. When a terminal device detects that the beam management conditions are met, it automatically sends a notification message that the beam management conditions have been met to the network device to trigger the beam management process, thereby avoiding the method in the related technology that the terminal device needs to feedback the beam measurement results according to the requirements of the network device before beam management can be performed, thereby improving the efficiency of identifying the optimal beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] FIG1 is an example diagram of a scenario of communication between a base station and a terminal provided in an embodiment of the present application;

[0050] FIG2 is a flow chart of a communication method provided in an embodiment of the present application;

[0051] FIG3 is a flow chart of another communication method provided in an embodiment of the present application;

[0052] FIG4 is a schematic diagram of the hardware composition of an electronic device provided in an embodiment of the present application;

[0053] FIG5 is a schematic diagram of the hardware composition of another electronic device provided in an embodiment of the present application;

[0054] FIG6 is a schematic diagram of a communication device provided in an embodiment of the present application;

[0055] FIG7 is a schematic diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0056] The terms "first", "second" and "third" in the specification, claims and drawings of this application are used to distinguish different objects rather than to limit a specific order.

[0057] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0058] The embodiments of the present application are applied to a communication system. The communication system may be a second-generation (2G) communication system, a third-generation (3G) communication system, an LTE system, a fifth-generation (5G) communication system, a Long Term Evolution (LTE) and 5G hybrid architecture, a 5G New Radio (5G NR) system, or any new communication system that may emerge in future communication developments.

[0059] The communication system includes a first device and a second device. The first device can be a device on the network side for providing network communication functions, which is sometimes also called a network device or a network element. The network device can generally be a base station (including a functional unit of a base station, or a combination of functional units of a base station) or a core network unit, wherein the core network unit can be a functional unit in the core network, including but not limited to an access and mobility management function (AMF) unit or a session management function (SMF) unit. The second device can be a device for accessing the network, which can generally be a terminal. See Figure 1, which is an example diagram of a scenario of communication between a base station and a terminal provided in an embodiment of the present application. Figure 1 includes base station 1 and terminal 2.

[0060] In the embodiments provided in the present application, the base station can be any device with wireless transceiver functions, including but not limited to: an evolved base station (NodeB or eNB or e-NodeB, evolutionary Node B) in long term evolution (LTE), a base station (gNodeB or gNB) or a transmission receiving point (TRP) in new radio (NR), a base station of subsequent evolution of 3GPP, an access node in a Wi-Fi system, a wireless relay node, a wireless backhaul node, 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. The base station can include one or more co-site or non-co-site transmission points (Transmission Reception Point, TRP). The base station can also be a wireless controller, a centralized unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario. The base station can communicate with the terminal, or communicate with the terminal through a relay station. The terminal can communicate with multiple base stations of different technologies. For example, the terminal can communicate with a base station that supports the LTE network, and can also communicate with a base station that supports the 5G network. It can also establish dual connections with a base station that supports the LTE network and a base station that supports the 5G network.

[0061] In the embodiments provided herein, the terminal may be in various forms, such as a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a vehicle-mounted terminal device, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a wearable terminal device, etc. The terminal may also be sometimes referred to as a terminal device, user equipment (UE), access terminal device, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal device, mobile device, UE terminal device, terminal device, wireless communication device, UE agent or UE device, etc. The terminal may also be a fixed terminal or a mobile terminal.

[0062] As mentioned earlier, in many scenarios, to enhance communication quality between terminal devices and network devices, the network devices transmit pilot signals for beam management to the terminal devices. Upon receiving these pilot signals, the terminal devices measure the quality and characteristics of multiple transmitted or received beams to identify the optimal beam. These measurements are then fed back to the network devices, which then indicate the optimal beam to the terminal devices, enabling communication between the terminal devices and the network devices using this optimal beam.

[0063] However, there is a time delay in the process from when the terminal device feeds back the measurement result of the pilot signal based on the configuration of the network device to when the network device receives the measurement result, resulting in low efficiency in identifying the optimal beam.

[0064] In view of this, the present application provides a communication method and related equipment. In this communication method, when the terminal device detects that the beam management conditions are met, it automatically sends notification information that the beam management conditions have been met to the network device to trigger the beam management process, thereby avoiding the method in the related technology that the terminal device needs to feedback the beam measurement results according to the requirements of the network device before beam management can be performed, thereby improving the efficiency of identifying the optimal beam.

[0065] In order to make the technical solution of the present application clearer and easier to understand, the communication method of the present application is introduced below with reference to the accompanying drawings.

[0066] See Figure 2, which is a schematic diagram of a communication method provided in an embodiment of the present application. The method is applied to a terminal device, such as a mobile phone, a computer, etc. The method includes:

[0067] S201: The terminal device detects whether the beam management condition is met. If so, step S202 is executed.

[0068] When the terminal device detects that at least one of the following five beam management conditions is met, step S202 is executed.

[0069] First, the first beam management condition is introduced: the first beam management condition is that the link quality value of the reference signal is greater than or equal to a first threshold.

[0070] In the field of communications, a reference signal is often used to compare and calibrate the received signal. It can be a signal with a known pattern or a specific frequency to ensure that the information is correctly received and decoded.

[0071] The link quality of a reference signal refers to the performance of the communication link that transmits the reference signal. It can be confirmed from multiple aspects such as signal strength, signal-to-noise ratio, bit error rate, latency, and coverage. The quality of this link directly affects the reliability and accuracy of the reference signal in the communication system.

[0072] In the communication method disclosed in the embodiment of the present application, the link quality of the reference signal is obtained based on the first reference signal. Further, the determination method of the first reference signal specifically includes at least one of the following two methods:

[0073] In the first case, the first reference signal is the same as the reference signal used for candidate beam detection. Candidate beam detection is the process by which a receiver detects and evaluates possible transmission beams in a communication system. This process is used to select the beam that best suits the current communication environment, thereby improving signal quality, coverage, and data transmission rates.

[0074] The second type is that the first reference signal is a reference signal configured by the base station and is specifically used by the terminal device to initiate subsequent beam management processes.

[0075] In the communication method disclosed in the embodiment of the present application, the link quality value of the reference signal can be measured by the reference signal receiving power (RSRP) value obtained by the terminal device measuring the first reference signal, or the signal to interference plus noise ratio (SINR) value. Among them, the RSRP value refers to the average value of the signal power received on all REs (resource elements) carrying the reference signal in a certain symbol, and the SINR value refers to the ratio of the strength of the received useful signal to the strength of the received interference signal (noise and interference).

[0076] It should be noted that the larger the RSRP value and SINR value, the better the link quality of the reference signal. In other words, the size of the RSRP value and SINR value is positively correlated with the link quality value of the reference signal.

[0077] It should be noted that the link quality of the reference signal may be determined by the link qualities of multiple reference signals (for example, the average of the RSRP values ​​of multiple reference signals), or by one of the link qualities of multiple reference signals. This application does not limit this.

[0078] The first threshold (Threshold 1) is calculated based on assumed transmission parameters (e.g., assumed PDCCH transmission parameters) and corresponds to a specific block error rate (BLER), denoted as BLER1. The first threshold can be 10-1, 10-2, or the like, and this application does not impose any limitation on this.

[0079] In some examples, the first threshold may be a value configured by a network device such as a base station, or predefined by a protocol.

[0080] In other examples, the first threshold may be the same as the threshold used for candidate beam detection. The threshold for candidate beam detection is typically a parameter defined based on system design and performance requirements, and is primarily used to discover new candidate beams during a beam failure recovery process.

[0081] In other examples, the first threshold may be a value different from the threshold used for candidate beam detection. Specifically, the block error rate BLER1 corresponding to the first threshold may be the block error rate BLER corresponding to the threshold for candidate beam detection multiplied by a scaling factor, which may be configured by a network device such as a base station.

[0082] Next, the second beam management condition is introduced: the link quality value associated with the channel is less than a second threshold.

[0083] In the field of communications, a channel is the medium through which signals are transmitted between network devices and end devices, directly impacting communication quality. The link associated with a channel is the communication path or connection between network devices and end devices, involving the transmission of signals in space or frequency.

[0084] Channel-related link quality refers to the performance of signal transmission on a specific link, such as stability and reliability. Channel-related link quality is affected by many factors, including but not limited to signal attenuation and fading, multipath effects, interference and noise, and weather and environmental conditions.

[0085] In the communication method disclosed in the embodiment of the present application, the link quality associated with the channel is obtained based on the second reference signal. Furthermore, the determination method of the second reference signal specifically includes at least one of the following six methods:

[0086] First, the second reference signal is the same as the reference signal used for beam failure detection. The purpose of beam failure detection is to detect when a beam is degraded or unsuitable, allowing timely action to address or switch to a more suitable beam, thereby improving the signal quality, coverage, and data rate of the communication system.

[0087] The second type, the second reference signal is a reference signal configured by the base station and specifically used by the terminal device to initiate subsequent beam management processes.

[0088] The third type, the second reference signal, is determined by the demodulation reference signal (DMRS) associated with the physical downlink control channel (PDCCH). The physical downlink control channel (PDCCH) is a channel used by network equipment such as base stations to transmit control information to terminal devices in wireless communications. Its main functions include scheduling assignments, resource indications, and uplink resource allocations. In wireless communication systems, the demodulation reference signal (DMRS) is a reference signal used for signal demodulation at the receiving end. It helps the receiving end perform signal detection, channel estimation, and data decoding, thereby achieving a more reliable and efficient wireless communication system.

[0089] The fourth type is to determine the second reference signal using the DMRS Quasi Co-Location (QCL) reference signal associated with the PDCCH. If the channel characteristics of a symbol on a certain antenna port can be derived from another antenna port, the two antenna ports are considered to be quasi-co-located. That is, for two quasi-co-located ports, the channel estimation result obtained from one port can be used for the other port.

[0090] Fifth, the second reference signal is determined by a reference signal associated with an activated Transmission Configuration Indicator (TCI) state. A TCI state is a state used to indicate the quasi-co-location relationship between two signals in a communication system. Typically, a TCI state indicates at least one reference signal. If a signal or channel is associated with a TCI, the signal or channel is in a quasi-co-location relationship with the reference signal indicated by the TCI state.

[0091] Sixth, the second reference signal is determined by the reference signal associated with the TCI state associated with the control resource set (CORESET). A CORESET is a set of resources used to transmit control signaling, which helps control and schedule wireless communication systems. It should be noted that only the reference signals associated with the TCI states associated with some CORESETs can determine the link quality associated with the channel. For example, only the reference signal associated with the TCI state associated with the CORESET with the lowest index can be used to determine the second reference signal, and thus the link quality associated with the channel can be determined using this second reference signal.

[0092] In the communication method disclosed in the embodiment of the present application, the link quality of the reference signal can be measured by the RSRP value or SINR value obtained by the terminal measuring the second reference signal. The specific measurement method is similar to the measurement method of the first reference signal described above and will not be repeated here.

[0093] The second threshold (Threshold 2) is calculated based on the assumed transmission parameters and corresponds to a specific block error rate (BLER), which is denoted as BLER2. The second threshold can be 10-1, 10-2, etc., which is not limited in this application.

[0094] In some examples, the second threshold may be a value configured by a network device such as a base station, or predefined by a protocol.

[0095] In other examples, the second threshold may also be a value different from the threshold used for beam failure detection. The threshold for beam failure detection is usually a parameter defined according to system design and performance requirements, and is mainly used to detect failed beams in the beam failure recovery process. Specifically, the block error rate BLER2 corresponding to the second threshold may be lower than the BLER corresponding to the threshold for beam failure detection. For example, the BLER corresponding to the threshold for beam failure detection is 10-1, and the block error rate BLER2 corresponding to the second threshold is 5x10-2. Specifically, the block error rate BLER2 corresponding to the second threshold may be the BLER corresponding to the threshold for beam failure detection multiplied by a scaling factor. The scaling factor may be configured by a network device such as a base station, and the scaling factor is a value greater than 0 and less than 1.

[0096] It should be noted that the second threshold is usually a smaller value than the first threshold. For example, if the block error rate corresponding to the first threshold is 10-1, the block error rate corresponding to the second threshold may be 10-2.

[0097] Next, the third beam management condition is introduced: the link quality value of the reference signal is greater than or equal to the first threshold, and the link quality value associated with the channel is less than the second threshold.

[0098] Next, a fourth beam management condition is introduced: The fourth beam management condition is that the link quality value of the reference signal is better than the link quality value associated with the channel.

[0099] Specifically, the case where the link quality value of the reference signal is better than the link quality value associated with the channel may include the following six cases:

[0100] First, the RSRP value corresponding to the link quality of the reference signal is greater than or equal to the RSRP value corresponding to the link quality associated with the channel.

[0101] Second, the RSRP value corresponding to the link quality of the reference signal is greater than or equal to the RSRP value corresponding to the link quality associated with the channel plus an offset.

[0102] The third type is that the SINR value corresponding to the link quality of the reference signal is greater than or equal to the SINR value corresponding to the link quality associated with the channel.

[0103] In a fourth type, the SINR value corresponding to the link quality of the reference signal is greater than or equal to the SINR value corresponding to the link quality associated with the channel plus an offset.

[0104] Fifth, the block error rate corresponding to the link quality value of the reference signal is smaller than the block error rate corresponding to the link quality value associated with the channel.

[0105] The sixth type is that the block error rate corresponding to the link quality value of the reference signal is less than the block error rate corresponding to the link quality value associated with the channel multiplied by a scaling factor, which can be configured by a network device such as a base station, and the scaling factor is a value greater than 0 and less than 1.

[0106] It can be understood that when one or more of the above six conditions are met, it can be determined that the link quality value of the reference signal is better than the link quality value associated with the channel.

[0107] Finally, the fifth beam management condition is introduced. The fifth beam management condition is that the link quality associated with the channel at the first moment varies by more than a second threshold compared to the link quality associated with the channel at the second moment. In some examples, if the link quality associated with the channel at the first moment corresponds to RSRP1 and the link quality associated with the channel at the second moment corresponds to RSRP2, the fifth beam management condition may be that (RSRP1-RSRP2) is greater than the second threshold.

[0108] In other examples, the block error rate corresponding to the link quality associated with the channel at the first moment is BLER1, and the block error rate corresponding to the link quality associated with the channel at the second moment is BLER2, then the fifth beam management condition may be that (BLER1-BLER2) is greater than the second threshold.

[0109] It should be noted that if a terminal device meets the fifth beam management condition described above, the stability of the terminal device's channel-associated link is low. Low-stability channel-associated links may lead to reduced communication quality and unstable connections in the communication system. For example, this may result in increased packet loss, increased communication transmission delays, frequent connection interruptions, difficulty in adapting, and limited network capacity.

[0110] S202: The terminal device sends notification information that the beam management conditions have been met to the network device.

[0111] In some specific implementations, the notification information can be sent to network devices such as base stations via the Physical Uplink Control Channel (PUCCH) and / or the Physical Random Access Channel (PRACH) resources. PUCCH is a physical uplink control channel in wireless communication systems, used to transmit uplink control information. It carries uplink-related control signaling, such as scheduling requests, uplink power control, ACK / NACK (acknowledgement / negative) feedback, etc. PRACH is a physical random access channel in wireless communication systems, used by terminal devices for initial access to the network or to request resources when needed.

[0112] In the communication method disclosed in the embodiment of the present application, different PUCCHs or PRACHs may be associated with different beam management conditions. For example, when the terminal device detects that a first beam management condition is met, notification information that the beam management condition has been met may be sent to the network device via PRACH. When the terminal device detects that a second beam management condition is met, notification information that the beam management condition has been met may be sent to the network device via another PRACH. This application does not limit this.

[0113] In the communication method disclosed in the embodiment of the present application, different PUCCHs or PRACHs may be associated with different channel state information (CSI) reporting configurations. Different CSI reporting configurations may be associated with different beam management conditions and different reporting contents. Exemplarily, when the terminal device detects that the first beam management condition is met, notification information that the beam management condition has been met may be sent to the network device via PUCCH or PRACH. Furthermore, the PUCCH may send beam information, etc. as reporting content to the network device to form a CSI report. When the terminal device detects that the second beam management condition is met, notification information that the beam management condition has been met may be sent to the network device via PRACH, and spatial filtering information obtained based on the first reference signal may be used to send the PRACH, such as receiving beam information obtained based on the first reference signal is used to determine the transmitting beam information of the PRACH.

[0114] In the communication method disclosed in the embodiments of the present application, the notification information may be sent after a first time T1 after detecting that the terminal device meets the beam management conditions. The first time T1 is related to the terminal capability. It should be noted that the first time may be 1ms (millisecond), etc., and the specific first time is not limited in this application.

[0115] In other specific implementations, the notification information may also be sent to a network device such as a base station via a Media Access Control Element (MAC CE). A MAC CE is a control element of the MAC layer between the physical layer (PHY) and the logical link control (RLC) layer. It is used to transmit control information at the MAC layer to achieve effective management and scheduling of radio resources.

[0116] In the communication method disclosed in the embodiment of the present application, the MAC CE includes at least the satisfied beam management conditions and / or the first reference signal information.

[0117] In some examples, the first reference signal information may include a reference signal index of the first reference signal and / or an RSRP and / or SINR value corresponding to the first reference signal. In other examples, the first reference signal is included in the MAC CE, and the link quality value of the reference signal corresponding to the first reference signal is greater than or equal to the first threshold.

[0118] In the communication method disclosed in the embodiment of the present application, MAC CE can be transmitted on one of the following physical channels: First, MAC CE is transmitted in the physical uplink shared channel (PUSCH) scheduled by the first downlink control information (DCI) after the beam management conditions are met. Among them, PUSCH is used to transmit user data from terminal devices to network devices such as base stations. PUSCH allows multiple terminal devices to perform uplink data transmission on the same time and frequency resources. It should be noted that the PUSCH scheduled by the DCI is not the PUSCH used for data retransmission.

[0119] Second, the MAC CE is transmitted in the PUSCH of the first configured grant (CG) sent after a second time T2 after the beam management conditions are met. In a communication system, the configuration or authorization of specific resources allows a terminal device to perform a specific type of communication activity within a certain spectrum and time range. It should be noted that this second time T2 is related to the terminal's capabilities.

[0120] S203: The terminal device receives feedback information about the notification information from the network device.

[0121] In the communication method disclosed in the embodiments of the present application, the feedback information corresponding to the notification information can be obtained in one of the following ways:

[0122] The first is that the terminal device detects a search space specifically used for the terminal device to initiate a beam management process, or a PDCCH scheduled in a control resource set (CORESET). Specifically, the terminal device can monitor the PDCCH scheduled in the search space or the control resource set. If the PDCCH is monitored, it indicates that the terminal device has received feedback information about the notification information, and can perform corresponding operations according to the corresponding instructions in the feedback information.

[0123] Second, the terminal device detects another PUSCH with the same HARQ ID as the PUSCH carrying the MAC CE. HARQ is an automatic repeat request mechanism used to improve uplink and downlink reliability. The HARQ ID is a unique identifier assigned to each HARQ process. Specifically, if the terminal device detects another PUSCH with the same HARQ ID as the PUSCH carrying the MAC CE, it indicates that the terminal device has received feedback regarding the notification information and can perform corresponding operations based on the corresponding instructions in the feedback information.

[0124] Third, the terminal device receives an activation command for a CSI report. It should be noted that the CSI report is associated with the above-mentioned beam management condition, or is associated with the above-mentioned first reference signal. Furthermore, the CSI report is the same CSI report as the CSI report associated with the above-mentioned notification information.

[0125] It should be noted that if the terminal device does not receive feedback about the notification information within the target duration after sending the notification information, the terminal needs to continue sending notification information until the terminal device receives the feedback information. The target duration is the third time T3, which is related to the terminal's capabilities.

[0126] To summarize, an embodiment of the present application discloses a communication method. When a terminal device detects that a beam management condition is met, it automatically sends a notification message indicating that the beam management condition has been met to a network device to trigger a beam management process. This avoids the need in related technologies for the terminal device to feed back beam measurement results in accordance with the requirements of the network device before beam management can be performed, thereby improving the efficiency of identifying the optimal beam.

[0127] Referring to FIG3 , which is a schematic diagram of another communication method provided in an embodiment of the present application, the method is applied to a network device, such as a base station, and includes:

[0128] S301: The network device receives notification information sent by the terminal device indicating that the beam management condition has been met.

[0129] In some specific implementations, the beam management conditions include at least one of the following: the link quality value of the reference signal of the terminal device is greater than or equal to a first threshold, the link quality value associated with the channel of the terminal device is less than a second threshold, the link quality value of the reference signal of the terminal device is greater than or equal to the first threshold and the link quality value associated with the channel of the terminal device is less than the second threshold, the link quality value of the reference signal of the terminal device is better than the link quality value associated with the channel of the terminal device, and the quality change value of the link quality value associated with the channel of the terminal device within a first time length is greater than the change threshold.

[0130] In some specific implementations, receiving notification information sent by the terminal device includes: receiving notification information sent by the terminal device through PUCCH and / or PRACH.

[0131] In some specific implementations, receiving notification information sent by the terminal device includes: receiving notification information sent by the terminal device at a fourth time, where the fourth time is the first time after the terminal device detects that the beam management condition is met.

[0132] In some specific implementations, notification information sent by the terminal device is received through PUCCH and / or PRACH, including: receiving notification information sent by the terminal device through PUCCH and / or PRACH according to the type of beam management conditions.

[0133] In some specific implementations, the PUCCH or PRACH is associated with a channel state CSI report configuration.

[0134] In some specific implementations, receiving notification information sent by a terminal device includes: receiving notification information sent by the terminal device through a media access control element MAC CE, where the MAC CE includes beam management conditions, and / or first reference signal information, where the first reference signal information includes one or more of a reference signal index of the first reference signal, an RSRP value corresponding to the first reference signal, and an SINR value corresponding to the first reference signal.

[0135] In some specific implementations, sending feedback information about the notification information to the terminal device includes: sending feedback information about the notification information to the terminal device by detecting a PDCCH scheduled in a search space SS or a CORESET.

[0136] S302: The network device sends feedback information about the notification information to the terminal device.

[0137] To summarize, an embodiment of the present application discloses a communication method. When a network device receives notification information sent by a terminal device indicating that beam management conditions have been met, the network device sends feedback information about the notification information to the terminal device, thereby improving the efficiency of identifying the optimal beam.

[0138] Based on the aforementioned communication method, the present application also provides an electronic device for executing the aforementioned communication method, which will be described below in conjunction with embodiments.

[0139] Refer to Figure 4, which is a schematic diagram of the hardware composition of an electronic device provided in an embodiment of the present application. The electronic device can be a first device, including but not limited to a base station and a core network unit. Figure 4 shows a simplified schematic diagram of the base station structure. The base station includes parts 410, 420, and 430. Part 410 is mainly used for baseband processing, controlling the base station, etc.; Part 410 is usually the control center of the base station, which can usually be called a processor, which is used to control the base station to perform the processing operations on the first device side in the above method embodiment. Part 420 is mainly used to store computer program code and data. Part 430 is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals into baseband signals; Part 430 can usually be called a transceiver module, a transceiver, a transceiver circuit, or a transceiver, etc. The transceiver module of part 430 can also be called a transceiver or a transceiver, etc., which includes an antenna 433 and a radio frequency circuit (not shown in the figure), wherein the radio frequency circuit is mainly used for radio frequency processing. Alternatively, the device for implementing the receiving function in section 430 may be considered a receiver, and the device for implementing the transmitting function may be considered a transmitter, that is, section 430 includes receiver 432 and transmitter 431. The receiver may also be referred to as a receiving module, receiver, or receiving circuit, and the transmitter may be referred to as a transmitting module, transmitter, or transmitting circuit, etc.

[0140] Sections 410 and 420 may include one or more boards, each of which may include one or more processors and one or more memories. The processor is used to read and execute programs in the memory to implement baseband processing functions and control the base station. If multiple boards are present, the boards may be interconnected to enhance processing capabilities. As an optional implementation, multiple boards may share one or more processors, multiple boards may share one or more memories, or multiple boards may simultaneously share one or more processors.

[0141] For example, in one implementation, the transceiver module in section 430 is used to execute the transceiver-related processes executed by the base station (first device) in the aforementioned method embodiment. The processor in section 410 is used to execute the processing-related processes executed by the base station in the aforementioned method embodiment.

[0142] It should be understood that FIG4 is merely an example and not a limitation, and the network device including the processor, memory, and transceiver may not rely on the structure shown in FIG4 .

[0143] Referring to Figure 5, this figure is a schematic diagram of the hardware composition of another electronic device provided in an embodiment of the present application. The electronic device can be a second device, and the second device can be a terminal, including but not limited to electronic devices such as mobile phones and smart wearable devices (such as smart watches). Taking a mobile phone as an example, the electronic device may include a processor 510, an external memory interface 520, an internal memory 521, an antenna 1, an antenna 2, a mobile communication module 530, and a wireless communication module 540, etc.

[0144] It should be understood that the structure illustrated in this embodiment does not constitute a specific limitation on the electronic device. In other embodiments, the electronic device may include more or fewer components than shown, or some components may be combined or separated, or the components may be arranged differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0145] The processor 510 may include one or more processing units. For example, the processor 510 may include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU). Different processing units may be independent devices or integrated into one or more processors.

[0146] It is understood that the interface connection relationship between the modules illustrated in this embodiment is only a schematic illustration and does not constitute a structural limitation of the electronic device. In other embodiments of the present application, the electronic device may also adopt different interface connection methods in the above embodiments, or a combination of multiple interface connection methods.

[0147] The external memory interface 520 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the electronic device. The external memory card communicates with the processor 510 via the external memory interface 520 to implement data storage functions. For example, files such as music and videos can be stored on the external memory card.

[0148] The internal memory 521 can be used to store computer executable program code, and the executable program code includes instructions. The processor 510 executes various functional applications and data processing of the electronic device by running the instructions stored in the internal memory 521. The internal memory 521 may include a program storage area and a data storage area. Among them, the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc. The data storage area can store data created during the use of the electronic device (such as audio data, a phone book, etc.), etc. In addition, the internal memory 521 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (UFS), etc. The processor 510 executes various functional applications and data processing of the electronic device by running the instructions stored in the internal memory 521, and / or the instructions stored in the memory provided in the processor.

[0149] The wireless communication function of the electronic device can be implemented through antenna 1, antenna 2, mobile communication module 530, wireless communication module 540, modem processor and baseband processor.

[0150] Antenna 1 and Antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in an electronic device can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization. For example, antenna 1 can be reused as a diversity antenna for a wireless local area network. In other embodiments, the antennas can be used in conjunction with a tuning switch.

[0151] The mobile communication module 530 can provide solutions for wireless communications including 2G / 3G / 4G / 5G applied to electronic devices. The mobile communication module 530 may include at least one filter, a switch, a power amplifier, a low noise amplifier (LNA), etc. The mobile communication module 530 can receive electromagnetic waves from the antenna 1, and filter, amplify, and process the received electromagnetic waves, and transmit them to the modulation and demodulation processor for demodulation. The mobile communication module 530 can also amplify the signal modulated by the modulation and demodulation processor, and convert it into electromagnetic waves for radiation through the antenna 1. In some embodiments, at least some of the functional modules of the mobile communication module 530 can be set in the processor 510. In some embodiments, at least some of the functional modules of the mobile communication module 530 can be set in the same device as at least some of the modules of the processor 510.

[0152] In some embodiments, the electronic device initiates or receives a call request through the mobile communication module 530 and the antenna 1 .

[0153] Furthermore, an operating system runs on the aforementioned components, such as the iOS operating system, the Android operating system, and the Windows operating system. Application programs can be installed and run on the operating system. Those skilled in the art will clearly understand that, for ease of description and brevity, the explanation and beneficial effects of any of the aforementioned electronic devices can be referred to the corresponding method embodiments provided above, and will not be further elaborated here.

[0154] The present application also provides a communication system, which may include a first device as shown in FIG4 (for example, a network device such as a base station) and a second device as shown in FIG5 (for example, a terminal such as a mobile phone).

[0155] In this application, a terminal or network device may include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer may include hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also known as main memory). The operating system of the operating system layer may be any one or more computer operating systems that implement business processing through processes, such as the Linux operating system, Unix operating system, Android operating system, iOS operating system, or Windows operating system. The application layer may include applications such as browsers, address books, word processing software, and instant messaging software.

[0156] 6 , which is a schematic diagram of a communication device provided in an embodiment of the present application. The communication device 600 is applied to a terminal device and includes: a notification information sending module 601 and a feedback information receiving module 602 .

[0157] Specifically, the notification information sending module 601 is configured to send notification information to the network device upon detecting that the terminal device meets the beam management condition, where the beam management condition is related to the link quality of the reference signal of the terminal device and / or the link quality associated with the channel of the terminal device;

[0158] The feedback information receiving module 602 is configured to receive feedback information regarding notification information sent by a network device.

[0159] In summary, the present application discloses a communication device. When the terminal device detects that the beam management conditions are met, it automatically sends notification information that the beam management conditions have been met to the network device to trigger the beam management process, thereby avoiding the method in the related technology that the terminal device needs to feedback the beam measurement results according to the requirements of the network device before beam management can be performed, thereby improving the efficiency of identifying the optimal beam.

[0160] 7 , which is a schematic diagram of another communication device provided in an embodiment of the present application, wherein the communication device 700 is applied to a network device and includes: a notification information receiving module 701 and a feedback information sending module 702 .

[0161] Specifically, the notification information receiving module 701 is configured to receive notification information sent by a terminal device, where the notification information is received when the terminal device detects that a beam management condition is met, where the beam management condition is related to the link quality of a reference signal of the terminal device and / or the link quality associated with a channel of the terminal device;

[0162] The feedback information sending module 702 is configured to send feedback information about the notification information to the terminal device.

[0163] In summary, the present application discloses a communication device. When the terminal device detects that the beam management conditions are met, it automatically sends notification information that the beam management conditions have been met to the network device to trigger the beam management process, thereby avoiding the method in the related technology that the terminal device needs to feedback the beam measurement results according to the requirements of the network device before beam management can be performed, thereby improving the efficiency of identifying the optimal beam.

[0164] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and apparatuses described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0165] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A communication method, characterized in that, Applied to a terminal device, the method includes: If it is detected that the terminal device meets the beam management condition, a notification message is sent to a network device, where the beam management condition is related to the link quality of the reference signal of the terminal device and / or the link quality associated with the channel of the terminal device; Receiving feedback information about the notification message sent by the network device.

2. The method according to claim 1, wherein The beam management condition includes at least one of the following: The link quality value of the reference signal of the terminal device is greater than or equal to a first threshold, the link quality value associated with the channel of the terminal device is less than a second threshold, the link quality value of the reference signal of the terminal device is greater than or equal to the first threshold and the link quality value associated with the channel of the terminal device is less than the second threshold, the link quality value of the reference signal of the terminal device is better than the link quality value associated with the channel of the terminal device, and the quality change value of the link quality associated with the channel of the terminal device within a first duration is greater than a change threshold.

3. The method according to claim 2, wherein The method for obtaining the link quality value of the reference signal includes: Determining a first reference signal according to the reference signal for candidate beam detection and / or according to the target reference signal configured by the network device; Obtaining the link quality value of the first reference signal.

4. The method according to claim 3, characterized in that, The step of, if it is detected that the link quality value of the reference signal of the terminal device is greater than or equal to the first threshold, sending a notification message to the network device includes: If it is detected that the reference signal received power (RSRP) value of the first reference signal is greater than or equal to the first threshold and / or the signal-to-interference-plus-noise ratio (SINR) value of the first reference signal is greater than or equal to the first threshold, a notification message is sent to the network device.

5. The method according to claim 2, wherein The first threshold is a value configured by the network device or a value predefined by the protocol.

6. The method according to claim 2, characterized in that, The first threshold is the same value as the threshold for candidate beam detection.

7. The method according to claim 2, characterized in that The block error rate corresponding to the first threshold is the product of the block error rate corresponding to the threshold for candidate beam detection and a first scaling factor, where the first scaling factor is a coefficient configured by the network device.

8. The method according to claim 2, wherein The method for obtaining the link quality value associated with the channel includes: Obtaining the link quality value associated with the channel according to a second reference signal.

9. The method according to claim 8, characterized in that, The method for determining the second reference signal includes: Determining a second reference signal according to the reference signal for beam failure detection; And / or determining a second reference signal according to the target reference signal configured by the network device; And / or determining a second reference signal through the demodulation reference signal (DMRS) associated with the physical downlink control channel (PDCCH); And / or determining a second reference signal through the reference signal quasi-co-located with the DMRS associated with the PDCCH; And / or determining a second reference signal through the reference signal associated with the activated transmission configuration indication (TCI) state; And / or determining a second reference signal through the reference signal associated with the TCI state corresponding to the control resource set (CORESET).

10. The method according to claim 8, wherein The step of, if it is detected that the link quality value associated with the channel of the terminal device is less than the second threshold, sending a notification message to the network device includes: If it is detected that the RSRP value of the second reference signal is less than the second threshold, and / or the SINR value of the second reference signal is less than the second threshold, a notification message is sent to the network device.

11. The method according to claim 2, wherein The second threshold is a value configured by the network device or a value predefined by the protocol.

12. The method according to claim 2, wherein The block error rate corresponding to the second threshold is the product of the block error rate corresponding to the beam failure detection threshold and the second scaling factor, and the second scaling factor is a coefficient configured by the network device.

13. The method according to claim 2, characterized in that, If it is detected that the link quality value of the reference signal of the terminal device is greater than the link quality value associated with the channel of the terminal device, sending a notification message to the network device includes: If it is detected that the RSRP value of the reference signal of the terminal device is greater than the RSRP value of the link associated with the channel of the terminal device, a notification message is sent to the network device; Or, if it is detected that the SINR value of the reference signal of the terminal device is greater than the SINR value of the link associated with the channel of the terminal device, a notification message is sent to the network device.

14. The method according to claim 13, characterized in that, If it is detected that the RSRP value of the reference signal of the terminal device is greater than the RSRP value of the link associated with the channel of the terminal device, sending a notification message to the network device includes: If it is detected that the RSRP value of the reference signal of the terminal device is greater than the sum of the RSRP value of the link associated with the channel of the terminal device and the first offset, a notification message is sent to the network device.

15. The method according to claim 13, characterized in that, If it is detected that the SINR value of the reference signal of the terminal device is greater than the SINR value of the link associated with the channel of the terminal device, sending a notification message to the network device includes: If it is detected that the SINR value of the reference signal of the terminal device is greater than the sum of the SINR value of the link associated with the channel of the terminal device and the first offset, a notification message is sent to the network device.

16. The method according to claim 1, wherein Sending a notification message to the network device includes: Sending a notification message to the network device through the physical uplink control channel PUCCH and / or the physical random access channel PRACH.

17. The method according to claim 16, wherein Sending a notification message to the network device includes: After the first time when it is detected that the terminal device meets the beam management condition, a notification message is sent to the network device.

18. The method according to claim 16, wherein Sending a notification message to the network device through the physical uplink control channel PUCCH and / or the physical random access channel PRACH includes: According to the type of the beam management condition, a notification message is sent to the network device through PUCCH or PRACH.

19. The method according to claim 18, characterized in that, The PUCCH or PRACH is associated with a configuration of a channel state CSI report.

20. The method according to claim 1, wherein Sending a notification message to the network device includes: Sending a notification message to the network device through the media access control control element MAC CE, where the MAC CE includes the beam management condition and / or the first reference signal information, and the first reference signal information includes one or more of the reference signal index of the first reference signal, the RSRP value corresponding to the first reference signal, and the SINR value corresponding to the first reference signal.

21. The method according to claim 20, wherein Sending notification information to a network device through a Media Access Control Control Element (MAC CE), including: Carrying the MAC CE in a Physical Uplink Shared Channel (PUSCH) scheduled by a first Downlink Control Information (DCI) after the beam management condition is satisfied, and sending notification information to the network device.

22. The method according to claim 20, wherein Sending notification information to a network device through a Media Access Control Control Element (MAC CE), including: Carrying the MAC CE in a first configured grant PUSCH sent after a second time when the beam management condition is satisfied, and sending notification information to the network device.

23. The method according to claim 1, wherein Receiving feedback information about the notification information sent by the network device, including: Receiving feedback information about the notification information sent by the network device by detecting a Physical Downlink Control Channel (PDCCH) scheduled in a Search Space (SS) or a Control Resource Set (CORESET).

24. The method according to claim 21, wherein, Receiving feedback information about the notification information sent by the network device, including: If another PUSCH with the same Hybrid Automatic Repeat reQuest identity (HARQ ID) as the PUSCH is detected, receiving feedback information about the notification information sent by the network device.

25. The method according to claim 19, characterized in that, Receiving feedback information about the notification information sent by the network device, including: If a trigger command for triggering a Channel State Information (CSI) report corresponding to the configuration of a CSI report is received, receiving feedback information about the notification information sent by the network device.

26. The method according to claim 1, wherein The method further includes: If feedback information about the notification information is not received after a third time when the notification information is sent to the network device, sending the notification information to the network device again.

27. A communication method, characterized in that, Applied to a network device, the method includes: Receiving notification information sent by a terminal device, where the notification information is received when the terminal device detects that a beam management condition is satisfied, and the beam management condition is related to the link quality of a reference signal of the terminal device and / or the link quality associated with a channel of the terminal device; Sending feedback information about the notification information to the terminal device.

28. The method according to claim 27, wherein The beam management condition includes at least one of the following: The link quality value of a reference signal of the terminal device is greater than or equal to a first threshold, the link quality value associated with a channel of the terminal device is less than a second threshold, the link quality value of a reference signal of the terminal device is greater than or equal to the first threshold and the link quality value associated with a channel of the terminal device is less than the second threshold, the link quality value of a reference signal of the terminal device is better than the link quality value associated with a channel of the terminal device, and the quality change value of the link quality associated with a channel of the terminal device within a first time period is greater than a change threshold.

29. The method according to claim 27, wherein Receiving notification information sent by a terminal device, including: Receiving notification information sent by a terminal device through a Physical Uplink Control Channel (PUCCH) and / or a Physical Random Access Channel (PRACH).

30. The method according to claim 29, wherein, Receiving notification information sent by a terminal device, including: Receiving notification information sent by a terminal device at a fourth time, where the fourth time is the first time after the terminal device detects that the beam management condition is satisfied.

31. The method according to claim 29, characterized in that, Receiving, by means of PUCCH and / or PRACH, notification information sent by a terminal device, includes: Receiving, by means of PUCCH and / or PRACH, notification information sent by a terminal device according to the type of the beam management condition.

32. The method according to claim 31, wherein The PUCCH or PRACH is associated with a configuration of a channel state CSI report.

33. The method according to claim 27, wherein The received notification information sent by the terminal device includes: Receiving, by means of a media access control control element MAC CE, notification information sent by a terminal device, where the MAC CR includes the beam management condition and / or first reference signal information, and the first reference signal information includes one or more of a reference signal index of a first reference signal, an RSRP value corresponding to the first reference signal, and an SINR value corresponding to the first reference signal.

34. The method according to claim 27, wherein Sending feedback information regarding the notification information to the terminal device includes: Sending feedback information regarding the notification information to the terminal device by detecting a PDCCH scheduled in a search space SS or a CORESET.

35. A terminal device, characterized in that, The terminal device includes: A memory for storing a computer program or computer instructions; A processor for executing the computer program or computer instructions stored in the memory, so that the terminal device executes the method according to any one of claims 1 to 26.

36. A network device, characterized in that, The network device includes: A memory for storing a computer program or computer instructions; A processor for executing the computer program or computer instructions stored in the memory, so that the network device executes the method according to any one of claims 27 to 34.

37. A communication system, characterized in that, The system includes a terminal device and the network device, the terminal device is used to execute the method according to any one of claims 1 to 26, and the network device is used to execute the method according to any one of claims 27 to 34.

38. A computer storage medium for storing a computer program, which when executed is used to implement the method according to any one of claims 1 to 34.

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