Communication method and related equipment

Abstract

The invention provides a communication method and related equipment, and relates to the technical field of communication. When the terminal equipment detects that the beam management condition is met, the notification information which already meets the beam management condition is automatically sent to the network equipment to trigger the beam management process, so that the situation that the terminal equipment needs to feed back a beam measurement result according to the requirement of the network equipment to perform beam management in the related technology is avoided, and the user experience is improved. Therefore, the efficiency of identifying the optimal beam is improved.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a communication method and related devices. Background Art

[0002] With the development of mobile communication technologies, especially the continuous development of new generation mobile communication technologies such as the fifth generation mobile networks (abbreviated as 5G), the functions of communication systems are constantly being enhanced. Specifically, the 5G communication system can provide enhanced Mobile Broadband (eMBB), with faster connections, higher throughput, and greater capacity, and provide ultra-reliable low-latency communications (uRLLC), so as to apply the network in critical mission scenarios that require uninterrupted and stable data links, such as Extended Reality (XR) scenarios or Cloud Gaming scenarios, to meet the requirements of the scenarios for the ultra-high reliability and low latency of wireless communication networks.

[0003] A communication system may include network devices such as base stations. Each base station can support the communication of multiple terminal devices, where the terminal device can be a 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 multiple beams for transmission or reception to identify the optimal beam, and feedback the measurement results to the network device. Furthermore, the network device can indicate the optimal beam to the terminal device, so that the terminal device and the network device communicate through the optimal beam.

[0004] However, there is a time delay in the process from when the terminal device feeds back the measurement results of the pilot signal based on the configuration of the network device to when the network device receives the measurement results, resulting in a low efficiency of identifying the optimal beam. Summary of the Invention

[0005] The purpose of this application is to provide a communication method and related devices, which can improve the efficiency of identifying the optimal beam.

[0006] In a first aspect, the present application provides a communication method, which is applied to mobile phones, computer terminal devices. The method includes: if it is detected that the terminal device meets the beam management condition, sending a notification message to the 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. Thus, when the terminal device detects that it meets the beam management condition, it automatically sends the notification message 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 where the terminal device needs to feedback the beam measurement result according to the requirements of the network device before the beam management can be performed, and thus improving the efficiency of identifying the optimal beam.

[0007] In some specific implementation manners, if it is detected that the terminal device meets the beam management condition, sending a notification message to the network device includes: if it is detected that 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 / or the quality change value of the link quality associated with the channel of the terminal device within a first time period is greater than a change threshold, then sending a notification message to the network device. Thus, when the terminal device detects that it meets the beam management condition, it automatically sends the notification message 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 where the terminal device needs to feedback the beam measurement result according to the requirements of the network device before the beam management can be performed, and thus improving the efficiency of identifying the optimal beam.

[0008] In some specific implementation manners, 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.

[0009] In some specific implementation manners, if 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 receiving 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 condition is satisfied, the notification message that has satisfied the beam management condition is automatically sent to the network device to trigger the beam management process, thereby avoiding the method in the related art in which the terminal device needs to feedback the beam measurement result according to the requirements of the network device before the beam management can be performed, and thus improving the efficiency of identifying the optimal beam.

[0010] In some specific implementation manners, the first threshold is a value configured by the network device or a value predefined by the protocol.

[0011] In some specific implementation manners, the first threshold is the same value as the threshold used for candidate beam detection.

[0012] In some specific implementation manners, 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 the first scaling factor, and the first scaling factor is a factor configured by the network device.

[0013] In some specific implementation manners, the method for obtaining the link quality value associated with the channel includes: obtaining the link quality value associated with the channel according to the second reference signal.

[0014] In some specific implementation manners, the method for determining the second reference signal includes: determining the second reference signal according to the reference signal used for beam failure detection; and / or determining the second reference signal according to the target reference signal configured by the network device; and / or determining the second reference signal through the demodulation reference signal (DMRS) associated with the physical downlink control channel (PDCCH); and / or determining the second reference signal through the reference signal quasi-co-located with the DMRS associated with the PDCCH; and / or determining the second reference signal through the reference signal associated with the activated transmission configuration indicator (TCI) state; and / or determining the second reference signal through the reference signal associated with the TCI state corresponding to the control resource set (CORESET).

[0015] In some specific implementation manners, if it is detected that the link quality value associated with the channel of the terminal device is less than a 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 condition is satisfied, the notification message that has satisfied the beam management condition 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 result according to the requirements of the network device before the beam management can be performed, and thus improving the efficiency of identifying the optimal beam.

[0016] In some specific implementation manners, the second threshold is a value configured by the network device or a value predefined by the protocol.

[0017] In some specific implementation manners, 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 a second scaling factor, and the second scaling factor is a factor configured by the network device.

[0018] In some specific implementation manners, 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 condition is satisfied, the notification message that has satisfied the beam management condition 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 result according to the requirements of the network device before the beam management can be performed, and thus improving the efficiency of identifying the optimal beam.

[0019] In some specific implementation manners, 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 a first offset, a notification message is sent to the network device. Thus, when the terminal device detects that the beam management condition is satisfied, the notification message that has satisfied the beam management condition 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 result according to the requirements of the network device before the beam management can be performed, and thus improving the efficiency of identifying the optimal beam.

[0020] In some specific implementation manners, 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 a first offset, a notification message is sent to the network device. Thus, when the terminal device detects that the beam management condition is satisfied, the notification message that has satisfied the beam management condition 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 result according to the requirements of the network device before the beam management can be performed, and thus improving the efficiency of identifying the optimal beam.

[0021] In some specific implementation manners, sending a notification message to the network device includes: sending the notification message to the network device through a physical uplink control channel PUCCH and / or a physical random access channel PRACH.

[0022] In some specific implementation manners, sending a notification message to the network device includes: sending the notification message to the network device at the first time after it is detected that the terminal device satisfies the beam management condition.

[0023] In some specific implementation manners, sending a notification message to the network device through a physical uplink control channel PUCCH and / or a physical random access channel PRACH includes: sending the notification message to the network device through PUCCH or PRACH according to the type of the beam management condition.

[0024] In some specific implementation manners, PUCCH or PRACH is associated with a configuration of a channel state CSI report.

[0025] In some specific implementation manners, sending a notification message to the network device includes: sending the notification message to the network device through a media access control control element MAC CE, where the MAC CE includes a 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 the first reference signal, an RSRP value corresponding to the first reference signal, and an SINR value corresponding to the first reference signal.

[0026] In some specific implementation manners, sending a notification message to the network device through a media access control control element MAC CE includes: 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 the notification message to the network device.

[0027] In some specific implementation manners, a notification message is sent to a network device through a Media Access Control Control Element (MAC CE), including: carrying the MAC CE in the first configured grant PUSCH sent after a second time when beam management conditions are met, and sending the notification message to the network device.

[0028] In some specific implementation manners, feedback information about the notification message sent by the network device is received, including: receiving the feedback information about the notification message 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).

[0029] In some specific implementation manners, feedback information about the notification message sent by the network device is received, including: if a trigger command is received, where the trigger command is used to trigger a Channel State Information (CSI) report corresponding to the configuration of a CSI report, then receiving the feedback information about the notification message sent by the network device.

[0030] In some specific implementation manners, feedback information about the notification message sent by the network device is received, including: if a CSI report returned by the network device is received, then receiving the feedback information about the notification message sent by the network device.

[0031] In some specific implementation manners, the method further includes: if no feedback information about the notification message is received after a third time when the notification message is sent to the network device, then sending the notification message to the network device again.

[0032] In a second aspect, the present application provides a communication method applied to a network device. The method includes: receiving a notification message sent by a terminal device, where the notification message is received when the terminal device detects that beam management conditions are met, and the beam management conditions are 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; and sending feedback information about the notification message to the terminal device. Thus, when the terminal device detects that the beam management conditions are met, the notification message that has already met the beam management conditions is automatically sent to the network device to trigger a beam management process, thereby avoiding the method in the related art where the terminal device needs to feedback beam measurement results according to the requirements of the network device before beam management can be performed, and thus improving the efficiency of identifying the optimal beam.

[0033] In some specific implementation manners, the beam management conditions include that 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 / or 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. Thus, when the terminal device detects that the beam management conditions are met, it automatically sends the notification information that has met the beam management conditions to the network device to trigger the beam management process, thereby avoiding the method in the related art where the terminal device needs to feedback the beam measurement result according to the requirements of the network device before performing beam management, and thus improving the efficiency of identifying the optimal beam.

[0034] In some specific implementation manners, receiving the notification information sent by the terminal device includes: receiving the notification information sent by the terminal device through the PUCCH and / or PRACH.

[0035] In some specific implementation manners, receiving the notification information sent by the terminal device includes: receiving the 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 conditions are met.

[0036] In some specific implementation manners, receiving the notification information sent by the terminal device through the PUCCH and / or PRACH includes: receiving the notification information sent by the terminal device through the PUCCH and / or PRACH according to the type of the beam management conditions.

[0037] In some specific implementation manners, the PUCCH or PRACH is associated with a configuration of a channel state CSI report.

[0038] In some specific implementation manners, receiving the notification information sent by the terminal device includes: receiving the notification information sent by the terminal device through the media access control control element MAC CE. The MAC CR includes the beam management conditions 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.

[0039] In some specific implementation manners, sending the feedback information about the notification information to the terminal device includes: sending the feedback information about the notification information to the terminal device by detecting the PDCCH scheduled in the search space SS or CORESET.

[0040] In a third aspect, the present application provides a terminal device, which 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 the first aspect.

[0041] In a fourth aspect, the present application provides a network device, which 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 the second aspect.

[0042] In a fifth aspect, the present application provides a communication system, which includes a terminal device and a network device. The terminal device is configured to execute the method according to the first aspect, and the network device is configured to execute the method according to the second aspect.

[0043] 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 according to the first aspect and the second aspect.

[0044] In a 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 configured to send notification information to the network device if it is detected that the terminal device meets the beam management condition, where the beam management condition indicates that the link associated with the channel of the terminal device needs to be changed, and the notification information indicates that the link associated with the channel of the terminal device is changed to the link of the reference signal; the feedback information receiving module is configured to receive the 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 changed to the link of the reference signal. Thus, when the terminal device detects that it meets the beam management condition, 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 in which the terminal device needs to feedback the beam measurement result according to the requirements of the network device before the beam management can be performed, and thus improving the efficiency of identifying the optimal beam.

[0045] In an 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 configured to receive notification information sent by a terminal device. The notification information is received when the terminal device detects that a beam management condition is met. The beam management condition indicates that a link associated with the channel of the terminal device needs to be changed. The notification information indicates that the link associated with the channel of the terminal device is changed to a link of a reference signal. The feedback information sending module is configured to send feedback information about the notification information to the terminal device. The feedback information indicates that the link associated with the channel of the terminal device has been changed to 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 in which the terminal device needs to feedback the beam measurement result according to the requirements of the network device before the beam management can be performed, and thus improving the efficiency of identifying the optimal beam.

[0046] Based on the above technical solution, the present application has the following beneficial effects:

[0047] The present application provides a communication method and related devices. 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 in which the terminal device needs to feedback the beam measurement result according to the requirements of the network device before the beam management can be performed, and thus improving the efficiency of identifying the optimal beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 FIG. is a scenario example diagram of communication between a base station and a terminal provided by an embodiment of the present application;

[0049] Figure 2 FIG. is a flowchart of a communication method provided by an embodiment of the present application;

[0050] Figure 3 FIG. is a flowchart of another communication method provided by an embodiment of the present application;

[0051] Figure 4 FIG. is a schematic diagram of the hardware composition of an electronic device provided by an embodiment of the present application;

[0052] Figure 5 FIG. is a schematic diagram of the hardware composition of another electronic device provided by an embodiment of the present application;

[0053] Figure 6 FIG. is a schematic diagram of a communication device provided by an embodiment of the present application;

[0054] Figure 7 FIG. is a schematic diagram of another communication device provided by an embodiment of the present application. Detailed implementation manners

[0055] The terms "first", "second", "third", etc. in the description, claims and drawings of this application are used to distinguish different objects, rather than to limit a specific order.

[0056] In the embodiments of this application, words such as "exemplary" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0057] The embodiments of this application are applied to a communication system. Among them, the communication system can be a second-generation (2G) communication system, a third-generation (3G) communication system, an LTE system, a fifth-generation (5G) communication system, or a hybrid architecture of Long-Term Evolution (LTE) and 5G, or a 5G New Radio (5GNR) system, as well as new communication systems emerging in the future development of communications, etc.

[0058] 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, and in some cases is also called a network device or a network element. A network device is usually a base station (including the functional units of the base station, or a combination of the functional units of the base station) or a core network unit. Among them, 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 accessing the network, usually a terminal. Refer to Figure 1 , which is a scenario example diagram of communication between a base station and a terminal provided by the embodiments of this application. Figure 1 It includes base station 1 and terminal 2.

[0059] In the embodiments provided in the present application, the base station may be any device with wireless transceiver functions, including but not limited to: the evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in Long Term Evolution (LTE), the base station (gNodeB or gNB) or transmission receiving point (TRP) in New Radio (NR), the base station evolved by 3GPP subsequently, the access node in the Wi-Fi system, the wireless relay node, the wireless backhaul node, etc. The base station may 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 may include one or more co-located or non-co-located transmission reception points (TRPs). The base station may also be a radio controller, a centralized unit (CU), and / or a distributed unit (DU) in the cloud radio access network (CRAN) scenario. The base station may communicate with the terminal, or communicate with the terminal through a relay station. The terminal may communicate with multiple base stations of different technologies. For example, the terminal may communicate with a base station supporting the LTE network, may also communicate with a base station supporting the 5G network, and may also perform dual connection with a base station supporting the LTE network and a base station supporting the 5G network.

[0060] In the embodiments provided in the present application, the terminal can be in various forms. For example, a mobile phone, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a 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 smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a wearable terminal device, and so on. The terminal can sometimes also be referred to as a terminal device, a user equipment (UE), an access terminal device, a vehicle-mounted terminal, an industrial control terminal, a UE unit, a UE station, a mobile station, a mobile device, a remote station, a remote terminal device, a mobile device, a UE terminal device, a terminal device, a wireless communication device, a UE agent, or a UE device, etc. The terminal can also be a fixed terminal or a mobile terminal.

[0061] As described above, in many task 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 multiple beams for transmission or reception to identify the optimal beam, and feedback the measurement results to the network device. Then, the network device can indicate the optimal beam to the terminal device, so that the terminal device and the network device can communicate through the optimal beam.

[0062] However, there is a time delay in the process from the terminal device feeding back the measurement results of the pilot signal based on the configuration of the network device to the network device receiving the measurement results, resulting in a low efficiency of identifying the optimal beam.

[0063] In view of this, the present application provides a communication method and related devices. In this communication method, 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, thus avoiding the method in the related art where the terminal device needs to feed back the beam measurement results according to the requirements of the network device before the beam management can be carried out, thereby improving the efficiency of identifying the optimal beam.

[0064] To make the technical solution of the present application clearer and easier to understand, the communication method of the present application will be introduced below with reference to the accompanying drawings.

[0065] See Figure 2 , which is a schematic diagram of a communication method provided by an embodiment of this application. This method is applied to a terminal device, such as a mobile phone, a computer, etc. This method includes:

[0066] S201: The terminal device detects whether the beam management condition is satisfied. If so, step S202 is executed.

[0067] When the terminal device detects that at least one of the following five beam management conditions is satisfied, step S202 is executed.

[0068] 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 the first threshold.

[0069] In the field of communication, the reference signal is usually used for comparing and calibrating the received signal. It can be a known pattern or a signal of a specific frequency to ensure the correct reception and decoding of information.

[0070] The link quality of the reference signal refers to the performance of the communication link that transmits the reference signal. The link quality of the reference signal can be confirmed from multiple aspects such as signal strength, signal-to-noise ratio, bit error rate, time delay, coverage range, etc. The quality of this link directly affects the reliability and accuracy of the reference signal in the communication system.

[0071] In the communication method disclosed in the embodiment of this 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:

[0072] First, the first reference signal is the same as the reference signal used for candidate beam detection. Among them, candidate beam detection refers to the process in which the receiving end probes and evaluates possible transmission beams in the communication system, and is used to select the most suitable beam for the current communication environment, so as to improve the signal quality, coverage range and data transmission rate of the communication system.

[0073] Second, the first reference signal is a reference signal configured by the base station and specifically used for the terminal device to initiate the subsequent beam management process.

[0074] In the communication method disclosed in the embodiments 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 resource elements (REs) carrying the reference signal within a certain symbol, and the SINR value refers to the ratio of the intensity of the received useful signal to the intensity of the received interference signal (noise and interference).

[0075] It should be noted that the larger the RSRP value and the SINR value, the better the link quality of the reference signal. That is to say, the magnitudes of the RSRP value and the SINR value are positively correlated with the link quality value of the reference signal.

[0076] It should be noted that the link quality of the reference signal may be jointly determined by the link qualities of multiple reference signals (for example, the average value of the RSRP values of multiple reference signals), or determined by one of the link qualities of multiple reference signals. This application does not make any limitations in this regard.

[0077] The first threshold (Threshold 1) is calculated based on assumed transmission parameters (for example, assumed PDCCH transmission parameters), and it corresponds to a specific block error rate (BLER), denoted as BLER1. The first threshold can be 10 -1 、10 -2 and other values. This application does not make any limitations in this regard.

[0078] In some examples, the first threshold can be a value configured by network devices such as base stations, or obtained through protocol pre - definition.

[0079] In some other examples, the first threshold can also be the same value as the threshold used for candidate beam detection. The threshold for candidate beam detection is usually a parameter defined according to system design and performance requirements, and is mainly used to discover new candidate beams in the beam failure recovery process.

[0080] In some other examples, the first threshold can also be a value different from the threshold used for candidate beam detection. Specifically, the block error rate BLER1 corresponding to the first threshold can be the block error rate BLER corresponding to the threshold for candidate beam detection multiplied by a scaling factor, and the scaling factor can be configured by network devices such as base stations.

[0081] Secondly, the second beam management condition is introduced. The second beam management condition is that the link quality value associated with the channel is less than the second threshold.

[0082] In the field of communication, a channel refers to the medium through which signals are transmitted between network devices and terminal devices, and it directly affects the communication quality. The link associated with the channel refers to the communication path or connection between the network device and the terminal device, involving the transmission of signals in space or frequency.

[0083] The link quality associated with the channel refers to the performance of signal transmission on this specific link, such as stability and reliability. The link quality associated with the channel is affected by various factors, including but not limited to: signal attenuation and fading, multipath effects, interference and noise, weather and environmental conditions, etc.

[0084] In the communication method disclosed in the embodiments of the present application, the link quality associated with the channel is obtained based on the second reference signal. Further, the determination method of the second reference signal specifically includes at least one of the following six:

[0085] First, the second reference signal is the same as the reference signal used for beam failure detection. Among them, the purpose of beam failure detection is to take timely measures to handle or switch to a more suitable beam when it is detected that the quality of a certain beam deteriorates or becomes inapplicable, thereby improving the signal quality, coverage, and data transmission rate of the communication system.

[0086] Second, the second reference signal is a reference signal configured by the base station and specifically used for the terminal device to initiate subsequent beam management procedures.

[0087] Third, the second reference signal is determined by the demodulation reference signal (DMRS) associated with the physical downlink control channel (PDCCH). Among them, the physical downlink control channel PDCCH is a channel used by network devices such as base stations to transmit control information to terminal devices in wireless communication, and its main functions include scheduling assignments, resource indications, uplink grants, etc. The demodulation reference signal DMRS is a reference signal used for signal demodulation at the receiving end in a wireless communication system. It helps the receiving end perform signal detection, channel estimation, and data decoding, thereby realizing a more reliable and efficient wireless communication system.

[0088] Fourth, the second reference signal is determined by a reference signal that is quasi co-located (QCL) with the DMRS associated with the PDCCH. Among them, if the channel characteristics on a symbol of an antenna port can be deduced from another antenna port, it is considered that these two antenna ports are quasi co-located. That is, in two quasi co-located ports, the channel estimation result obtained from one port can be used for the other port.

[0089] Fifth, the second reference signal is determined by a reference signal associated with an active Transmission Configuration Indicator (TCI) state. Among them, the transmission configuration indicator state refers to the quasi co-location relationship between two signals in a communication system. Usually, the transmission configuration indicator state will indicate at least one reference signal. If a signal or channel is associated with a transmission configuration indicator, then the signal or channel has a quasi co-location relationship with the reference signal indicated by the transmission configuration indicator state.

[0090] Sixth, the second reference signal is determined by a reference signal associated with the TCI state associated with a Control Resource Set (CORESET). Among them, CORESET is a set of resources for transmitting control signaling, which helps to achieve the control and scheduling of a wireless communication system. It should be noted that only the reference signals associated with the TCI state of some CORESETs can determine the link quality associated with the channel. Exemplarily, only the reference signal associated with the TCI state of the CORESET with the lowest index can determine the second reference signal, and then the link quality associated with the channel can be determined through this second reference signal.

[0091] In the communication method disclosed in the embodiments of the present application, the link quality of the reference signal can be measured by the RSRP value or the 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 elaborated here.

[0092] The second threshold (Threshold 2) is calculated by assuming transmission parameters and corresponds to a specific Block Error Rate (BLER), denoted as BLER2. The second threshold can be 10 -1 、10 -2 and other values. For this, the present application does not make any limitations.

[0093] In some examples, the second threshold can be a value configured by network devices such as base stations or predefined by protocols.

[0094] In some other examples, the second threshold can 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 can 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 can be the BLER corresponding to the threshold for beam failure detection multiplied by a scaling factor. The scaling factor can be configured by network devices such as base stations, and the scaling factor is a value greater than 0 and less than 1.

[0095] It should be noted that the second threshold is usually a value smaller than the first threshold. For example, if the block error rate corresponding to the first threshold is 10 -1 , then the block error rate corresponding to the second threshold can be 10 -2 .

[0096] Subsequently, the third beam management condition is introduced. The third beam management condition is that 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.

[0097] Subsequently, the 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.

[0098] Specifically, the situation where the link quality value of the reference signal is better than the link quality value associated with the channel can specifically include the following six cases:

[0099] 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.

[0100] 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.

[0101] Third, 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.

[0102] Fourth, 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.

[0103] Fifth, 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.

[0104] Sixth, 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. The scaling factor can be configured by network devices such as base stations, and the scaling factor is a value greater than 0 and less than 1.

[0105] It can be understood that when one or more of the above six situations 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.

[0106] Finally, the fifth beam management condition is introduced. The fifth beam management condition is that the change in the link quality associated with the channel at the first moment exceeds the second threshold compared to the link quality associated with the channel at the second moment. In some examples, 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. Then the fifth beam management condition can be that (RSRP1 - RSRP2) is greater than the second threshold.

[0107] In other examples, the link quality associated with the channel at the first moment corresponds to a block error rate of BLER1, and the link quality associated with the channel at the second moment corresponds to a block error rate of BLER2. Then the fifth beam management condition can be that (BLER1 - BLER2) is greater than the second threshold.

[0108] It should be noted that if the terminal device meets the above fifth beam management condition, it indicates that the stability of the channel-associated link of the terminal device is low. A channel-associated link with low stability may lead to a decline in the communication quality and instability of the connection in the communication system. Exemplarily, it may lead to an increase in the packet loss rate, an increase in the communication transmission delay, frequent connection interruptions, difficulty in self-adaptation, network capacity limitation, etc.

[0109] S202: The terminal device sends the notification information that has met the beam management condition to the network device.

[0110] In some specific implementation manners, the notification information may be sent to network devices such as base stations through a Physical Uplink Control Channel (PUCCH) and / or a Physical Random Access Channel (PRACH) resource. Among them, the PUCCH is a physical uplink control channel in a wireless communication system and is used to transmit uplink control information. It carries control signaling related to the uplink, such as scheduling requests, uplink power control, ACK / NACK (acknowledgment / negative acknowledgment) feedback, etc. The PRACH is a physical random access channel in a wireless communication system and is used for a terminal device to perform initial access in the network or request resources when needed.

[0111] In the communication method disclosed in the embodiments of the present application, different PUCCHs or PRACHs may be associated with different beam management conditions. Exemplarily, when a terminal device detects that the first beam management condition is satisfied, the notification information that has satisfied the beam management condition may be sent to the network device through the PRACH. When the terminal device detects that the second beam management condition is satisfied, the notification information that has satisfied the beam management condition may be sent to the network device through another PRACH. The present application does not make any limitations in this regard.

[0112] In the communication method disclosed in the embodiments of the present application, different PUCCHs or PRACHs may be associated with different Channel State Information (CSI) report configurations. Different CSI report configurations may be associated with different beam management conditions and different reporting contents. Exemplarily, when a terminal device detects that the first beam management condition is satisfied, the notification information that has satisfied the beam management condition may be sent to the network device through the PUCCH or PRACH. Further, the PUCCH may send beam information, etc. as the reporting content to the network device to form a CSI report. When the terminal device detects that the second beam management condition is satisfied, the notification information that has satisfied the beam management condition may be sent to the network device through the PRACH, and the spatial filtering information obtained based on the first reference signal is used to send the PRACH. For example, the received beam information obtained based on the first reference signal is used to determine the transmission beam information of the PRACH.

[0113] In the communication method disclosed in the embodiments of the present application, the above-mentioned notification information may be sent after a first time T1 after detecting that the terminal device satisfies the beam management condition, and the first time T1 is related to the terminal capability. It should be noted that the first time may be 1 ms (millisecond), etc. The present application does not make any limitations on the specific first time.

[0114] In some other specific implementation manners, the notification information may also be sent to network devices such as a base station through a Media Access Control Control Element (MAC CE). Among them, the MAC CE refers to a control element of the MAC layer between the Physical Layer (PHY) and the Radio Link Control (RLC) layer, and it is used to transmit control information at the MAC layer to achieve effective management and scheduling of radio resources.

[0115] In the communication method disclosed in the embodiments of the present application, the MAC CE at least includes the satisfied beam management conditions, and / or, the first reference signal information.

[0116] In some examples, the first reference signal information may include the reference signal index of the first reference signal, and / or, the RSRP and / or SINR values corresponding to the first reference signal. In some other examples, the first reference signal included in the MAC CE has a link quality value of the corresponding reference signal greater than or equal to the first threshold.

[0117] In the communication method disclosed in the embodiments of the present application, the MAC CE may be transmitted on one of the following physical channels: First, the MAC CE is transmitted in a Physical Uplink Shared Channel (PUSCH) scheduled by the first Downlink Control Information (DCI) after the beam management conditions are satisfied. Among them, the PUSCH is used to transmit user data sent by a terminal device to network devices such as a base station, and the PUSCH allows multiple terminal devices to perform uplink data transmission at the same time and frequency resources. It should be noted that the PUSCH scheduled by the DCI is not the PUSCH for data retransmission.

[0118] Second, the MAC CE is transmitted in a PUSCH of the first configured grant (CG) sent after the second time T2 after the beam management conditions are satisfied. In a communication system, the configuration or authorization of specific resources allows a terminal device to perform specific types of communication activities within a certain spectrum and time range. It should be noted that the second time T2 is related to the terminal capabilities.

[0119] S203: The terminal device receives feedback information about the notification information from the network device.

[0120] In the communication method disclosed in the embodiments of the present application, the feedback information corresponding to the notification information may be obtained in one of the following ways:

[0121] First, the terminal device detects a search space dedicated to the beam management process initiated by the terminal device, or a PDCCH scheduled in a control resource set (CORESET). Specifically, the terminal device can listen to the PDCCH scheduled in the search space or the control resource set. If the PDCCH scheduled in the search space or the control resource set is detected, it indicates that the terminal device has received the feedback information regarding the notification information, and thus can perform corresponding operations according to the corresponding indication in the feedback information.

[0122] Second, the terminal device detects another PUSCH having the same HARQ ID as the PUSCH carrying the MAC CE. Here, HARQ is an automatic repeat request mechanism, which is used to improve the reliability of the uplink and downlink. The HARQ ID is a unique identifier assigned to each HARQ process. Specifically, if the terminal device detects another PUSCH that has the same HARQ ID as the PUSCH carrying the MAC CE, it means that the terminal device has received the feedback information regarding the notification information, and thus can perform corresponding operations according to the corresponding indication in the feedback information.

[0123] Third, the terminal device receives an activation command for a CSI report. It should be noted that this CSI report is associated with the above-mentioned beam management condition, or is associated with the above-mentioned first reference signal. Further, the CSI report is the same CSI report as the CSI report associated with the foregoing notification information.

[0124] It should be noted that if the terminal device does not receive the feedback information regarding the notification information within the target duration after sending the notification information, the terminal needs to continue sending the notification information until the terminal device receives the feedback information. This target duration is the third time T3, and it should be noted that this third time T3 is related to the terminal capabilities.

[0125] In summary, the embodiment of the present application discloses a communication method. When the terminal device detects that the beam management condition is satisfied, it automatically sends the notification information that has satisfied the beam management condition to the network device to trigger the beam management process, thereby avoiding the method in the related art where the terminal device needs to feedback the beam measurement result according to the requirements of the network device before performing beam management, and thus improving the efficiency of identifying the optimal beam.

[0126] See Figure 3 , this figure is a schematic diagram of another communication method provided by the embodiment of the present application. This method is applied to a network device, such as a base station, etc. This method includes:

[0127] S301: The network device receives the notification information that has satisfied the beam management condition sent by the terminal device.

[0128] In some specific implementation manners, 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 value associated with the channel of the terminal device within a first time period is greater than a change threshold.

[0129] In some specific implementation manners, receiving the notification information sent by the terminal device includes: receiving the notification information sent by the terminal device through a PUCCH and / or a PRACH.

[0130] In some specific implementation manners, receiving the notification information sent by the terminal device includes: receiving the 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 satisfied.

[0131] In some specific implementation manners, receiving the notification information sent by the terminal device through a PUCCH and / or a PRACH includes: receiving the notification information sent by the terminal device through a PUCCH and / or a PRACH according to the type of the beam management condition.

[0132] In some specific implementation manners, a PUCCH or a PRACH is associated with a configuration of a channel state CSI report.

[0133] In some specific implementation manners, receiving the notification information sent by the terminal device includes: receiving the notification information sent by the terminal device through a media access control control element MAC CE, where the MAC CE includes a beam management condition, and / or, a 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.

[0134] In some specific implementation manners, sending feedback information about the notification information to the terminal device includes: sending the feedback information about the notification information to the terminal device by detecting a PDCCH scheduled in a search space SS or a CORESET.

[0135] S302: The network device sends feedback information about the notification information to the terminal device.

[0136] In summary, the embodiments of the present application disclose a communication method. After the network device receives the notification information sent by the terminal device that has satisfied the beam management condition, it sends feedback information about the notification information to the terminal device, improving the efficiency of identifying the optimal beam.

[0137] Based on the foregoing communication method, the present application further provides an electronic device for executing the foregoing communication method. This will be described below in conjunction with embodiments.

[0138] See Figure 4 , which is a schematic diagram of the hardware composition of an electronic device provided by an embodiment of the present application. The electronic device may be a first device, including but not limited to a base station and a core network unit. Figure 4 A simplified schematic diagram of the base station structure is shown. The base station includes a 410 part, a 420 part, and a 430 part. The 410 part is mainly used for baseband processing and controlling the base station, etc.; the 410 part is usually the control center of the base station and can usually be called a processor, which is used to control the base station to execute the processing operations on the first device side in the above method embodiments. The 420 part is mainly used for storing computer program codes and data. The 430 part is mainly used for the transceiver of radio frequency signals and the conversion between radio frequency signals and baseband signals; the 430 part can usually be called a transceiver module, a transceiver, a transceiver circuit, or a transceiver, etc. The transceiver module of the 430 part 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), where the radio frequency circuit is mainly used for radio frequency processing. Optionally, the devices used to implement the receiving function in the 430 part can be regarded as a receiver, and the devices used to implement the sending function can be regarded as a transmitter, that is, the 430 part includes a receiver 432 and a transmitter 431. The receiver can also be called a receiving module, a receiver, or a receiving circuit, etc., and the transmitter can be called a transmitting module, a transmitter, or a transmitting circuit, etc.

[0139] The 410 part and the 420 part may include one or more single boards, and each single board may include one or more processors and one or more memories. The processor is used to read and execute the programs in the memory to implement the baseband processing function and the control of the base station. If there are multiple single boards, the single boards can be interconnected to enhance the processing ability. As an optional implementation manner, it can also be that multiple single boards share one or more processors, or multiple single boards share one or more memories, or multiple single boards share one or more processors at the same time.

[0140] For example, in one implementation manner, the transceiver module of the 430 part is used to execute the transceiver-related processes performed by the base station (the first device) in the foregoing method embodiments. The processor of the 410 part is used to execute the processing-related processes performed by the base station in the foregoing method embodiments.

[0141] It should be understood thatFigure 4 By way of example only and not limitation, the above network device including a processor, a memory, and a transceiver may not depend on Figure 4 the structure shown.

[0142] See Figure 5 , which is a schematic diagram of the hardware composition of another electronic device provided in an embodiment of the present application. The electronic device may be a second device, and the second device may 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 below, 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.

[0143] It can be understood that the structure schematically shown 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 in the figure, or combine certain components, or split certain components, or have different component arrangements. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0144] 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), etc. Among them, different processing units may be independent devices or integrated in one or more processors.

[0145] It can be understood that the interface connection relationship between the modules schematically shown in this embodiment is only for illustrative purposes and does not constitute a structural limitation on 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.

[0146] The external memory interface 520 may be used to connect to 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 through the external memory interface 520 to implement the data storage function. For example, files such as music and videos are saved in the external memory card.

[0147] 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 can include a program storage area and a data storage area. Among them, the program storage area can store an operating system, application programs required for at least one function (such as a sound playback function, an image playback function, etc.). The data storage area can store data created during the use of the electronic device (such as audio data, a phone book, etc.). In addition, the internal memory 521 can include a high-speed random access memory and can 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.

[0148] The wireless communication function of the electronic device can be implemented by antenna 1, antenna 2, the mobile communication module 530, the wireless communication module 540, the modulation and demodulation processor, and the baseband processor, etc.

[0149] Antenna 1 and antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in the electronic device can be used to cover a single or multiple communication frequency bands. Different antennas can also be multiplexed to improve the utilization rate of the antennas. For example: Antenna 1 can be multiplexed as a diversity antenna for a wireless local area network. In some other embodiments, the antenna can be used in combination with a tuning switch.

[0150] The mobile communication module 530 can provide solutions for wireless communications including 2G / 3G / 4G / 5G, etc. applied to the electronic device. The mobile communication module 530 can include at least one filter, switch, power amplifier, low noise amplifier (LNA), etc. The mobile communication module 530 can receive electromagnetic waves through antenna 1, filter, amplify, etc. 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 through antenna 1 and radiate it out. In some embodiments, at least some functional modules of the mobile communication module 530 can be provided in the processor 510. In some embodiments, at least some functional modules of the mobile communication module 530 and at least some modules of the processor 510 can be provided in the same device.

[0151] In some embodiments, the electronic device initiates or receives a call request through the mobile communication module 530 and antenna 1.

[0152] In addition, an operating system runs on the above components. For example, iOS operating system, Android operating system, Windows operating system, etc. Application programs can be installed and run on the operating system. Those skilled in the art can clearly understand that for the convenience and brevity of description, the explanations and beneficial effects of the relevant content in any of the above-mentioned electronic devices can refer to the corresponding method embodiments provided above, and will not be elaborated here.

[0153] This application also provides a communication system, which may include Figure 4 a first device as shown (such as a network device like a base station) and Figure 5 a second device as shown (such as a terminal like a mobile phone).

[0154] In this application, a terminal or a 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. Among them, the hardware layer may include hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also called main memory). The operating system in the operating system layer may be any one or more computer operating systems that implement service processing through processes. For example, Linux operating system, Unix operating system, Android operating system, iOS operating system, or Windows operating system, etc. The application layer may include applications such as a browser, an address book, a word processing software, an instant messaging software, etc.

[0155] Refer to Figure 6 , which is a schematic diagram of a communication device provided by an embodiment of this application. This communication device 600 is applied to a terminal device and includes: a notification information sending module 601 and a feedback information receiving module 602.

[0156] Specifically, the notification information sending module 601 is configured to detect that the terminal device meets the beam management condition, and then send notification information to the 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;

[0157] The feedback information receiving module 602 is configured to receive the feedback information about the notification information sent by the network device.

[0158] In summary, the present application discloses a communication device. When the terminal device detects that the beam management condition is satisfied, it automatically sends the notification information that has satisfied the beam management condition to the network device to trigger the beam management process, thereby avoiding the method in the related art where the terminal device needs to feedback the beam measurement result according to the requirements of the network device before performing beam management, and thus improving the efficiency of identifying the optimal beam.

[0159] See Figure 7 , this figure is a schematic diagram of another communication device provided by an embodiment of the present application. 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.

[0160] Specifically, the notification information receiving module 701 is configured to receive the notification information sent by the terminal device. The notification information is received when the terminal device detects that the beam management condition is satisfied, and 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;

[0161] The feedback information sending module 702 is configured to send the feedback information about the notification information to the terminal device.

[0162] In summary, the present application discloses a communication device. When the terminal device detects that the beam management condition is satisfied, it automatically sends the notification information that has satisfied the beam management condition to the network device to trigger the beam management process, thereby avoiding the method in the related art where the terminal device needs to feedback the beam measurement result according to the requirements of the network device before performing beam management, and thus improving the efficiency of identifying the optimal beam.

[0163] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described systems, devices, and apparatuses can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0164] The above is the case. The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features; and 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, send notification information 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; Receive feedback information about the notification information 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, characterized in that, The method for obtaining the link quality value of the reference signal includes: Determine 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; Obtain 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, send notification information 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, send notification information 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: Obtain the link quality value associated with the channel according to a second reference signal.

9. The method according to claim 8, wherein The method for determining the second reference signal includes: Determine a second reference signal according to the reference signal for beam failure detection; and / or determine a second reference signal according to the target reference signal configured by the network device; and / or determine a second reference signal through the demodulation reference signal (DMRS) associated with the physical downlink control channel (PDCCH); and / or determine a second reference signal through the reference signal quasi-co-located with the DMRS associated with the PDCCH; and / or determine a second reference signal through the reference signal associated with the activated transmission configuration indication (TCI) state; and / or determine 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, characterized in that, 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, send notification information 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, then notification information 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, characterized in that, 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, wherein The case where 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, then notification information is sent 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, then notification information 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, then notification information is sent to the network device.

14. The method according to claim 13, wherein The case where 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, then notification information is sent 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, then notification information is sent to the network device.

15. The method according to claim 13, characterized in that The case where 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, then notification information is sent 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, then notification information is sent to the network device.

16. The method according to claim 1, wherein The sending of the notification information to the network device includes: Sending the notification information 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 The sending of the notification information to the network device includes: After the first time when it is detected that the terminal device meets the beam management condition, the notification information is sent to the network device.

18. The method according to claim 16, wherein The sending of the notification information 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, the notification information is sent to the network device through PUCCH or PRACH.

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

20. The method according to claim 1, wherein The sending of the notification information to the network device includes: Sending the notification information 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 Medium Access Control Control Element (MAC CE) includes: 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 met, 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 Medium Access Control Control Element (MAC CE) includes: Carrying the MAC CE in a first Configured Grant PUSCH sent after a second time when the beam management condition is met, 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 includes: 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, characterized in that, Receiving feedback information about the notification information sent by the network device includes: 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, wherein Receiving feedback information about the notification information sent by the network device includes: If a trigger command is received, where the trigger command is used to trigger a Channel State Information (CSI) report corresponding to the configuration of a CSI report, receiving feedback information about the notification information sent by the network device.

26. The method according to claim 1, characterized in that, The method further includes: If no feedback information about the notification information is 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 met, 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, characterized in that, 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.

29. The method according to claim 27, wherein Receiving notification information sent by a terminal device includes: 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 includes: 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 met.

31. The method according to claim 29, wherein 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, characterized in that, 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 configured to execute the method according to any one of claims 1 to 26, and the network device is configured 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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