Communication method and related equipment

Abstract

The invention provides a communication method and related equipment, and relates to the technical field of communication. And the terminal equipment detects whether a beam management condition is satisfied according to the link quality values of the first communication node and the second communication node. When the terminal device satisfies the beam management condition, the information is automatically notified to be sent to the network device, thereby avoiding the time delay problem that the terminal device can perform beam management according to the indication of the network device only after the network device triggers the beam management process in the related technology, and improving the communication efficiency.

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 enhancing. Specifically, a 5G communication system can provide enhanced Mobile Broadband (eMBB), with faster connections, higher throughput, and greater capacity, and can also provide ultra-reliable low-latency communications (uRLLC), so as to apply the network to 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 ultra-high reliability and low latency of the wireless communication network for these scenarios.

[0003] A communication system may include network devices such as base stations and terminal devices such as mobile phones. In related technologies, if a terminal device is within the communication coverage of multiple network devices such as base stations, the network device needs to trigger a beam management process to identify the network device with the highest communication quality, so that the terminal device can connect to the network device with the highest communication quality to enhance the signal transmission and reception effects of the communication system.

[0004] However, when the network device triggers the beam management process, the network device needs to first instruct the terminal device to perform beam measurement and feed back the measurement results to the network device. After that, the terminal device needs to wait for the instruction of the network device, and this waiting process will introduce a certain delay. In some application scenarios with high real-time requirements, the increase in delay may lead to low efficiency of the connection between the terminal device and the network device, thereby reducing the communication efficiency and may have a negative impact on the user experience. Summary of the Invention

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

[0006] In a first aspect, the present application provides a communication method, which is applied to terminal devices such as mobile phones and computers. The method includes: obtaining link quality values of a first communication node and a second communication node; if it is determined, based on the link quality values of the first communication node and the second communication node, that the terminal device meets the beam management condition, sending a notification message to a network device, where the beam management condition is related to the link quality of a reference signal of the terminal device and / or the link quality associated with a channel of the terminal device; and receiving feedback information about the notification message sent by the network device. Thereby, it circumvents the latency problem in the related art where only after the network device triggers the beam management process, the terminal device can perform beam management according to the indication of the network device, and improves the communication efficiency.

[0007] In some specific implementation manners, the communication node is a transmission and reception point (TRP), a receiving panel of the terminal device, or a cell.

[0008] In some specific implementation manners, obtaining the link quality value of the first communication node includes: obtaining the link quality value of a first reference signal associated with the first communication node.

[0009] In some specific implementation manners, the method for determining the first reference signal includes: determining the 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.

[0010] In some specific implementation manners, obtaining the link quality value of the second communication node includes: obtaining the link quality value of a second reference signal associated with the second communication node.

[0011] In some specific implementation manners, the method for determining the second reference signal includes: determining the second reference signal according to the reference signal 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), where the PDCCH is associated with the second communication node; 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 indication (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).

[0012] In some specific implementation manners, if it is determined that the terminal device meets the beam management condition according to the link quality values of the first communication node and the second communication node, a notification message is sent to the network device, including: if the link quality value of the first communication node is greater than or equal to the first threshold and the link quality value of the second communication node is less than the second threshold, a notification message is sent to the network device. Thereby, the latency problem in the related art that the beam management can only be triggered by the network device and the terminal device can perform beam management only according to the indication of the network device is avoided, and the communication efficiency is improved.

[0013] In some specific implementation manners, the first threshold and the second threshold are values configured by the network device or values predefined by the protocol.

[0014] In some specific implementation manners, the first threshold is the same value as the threshold used for candidate beam detection.

[0015] 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.

[0016] 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 threshold for beam failure detection and the second scaling factor, and the second scaling factor is a factor configured by the network device.

[0017] In some specific implementation manners, if it is determined that the terminal device meets the beam management condition according to the link quality values of the first communication node and the second communication node, a notification message is sent to the network device, including: if the link quality value of the first communication node is better than the link quality value of the second communication node, a notification message is sent to the network device. Thereby, the latency problem in the related art that the beam management can only be triggered by the network device and the terminal device can perform beam management only according to the indication of the network device is avoided, and the communication efficiency is improved.

[0018] In some specific implementation manners, if the link quality value of the first communication node is better than the link quality value of the second communication node, a notification message is sent to the network device, including: if the link quality value of the first communication node is less than the block error rate corresponding to the link quality value of the second communication node, a notification message is sent to the network device. Thereby, the latency problem in the related art that the beam management can only be triggered by the network device and the terminal device can perform beam management only according to the indication of the network device is avoided, and the communication efficiency is improved.

[0019] In some specific implementation manners, if the link quality value of the first communication node is greater than or equal to the link quality value of the second communication node, a notification message is sent to the network device, including: if the RSRP value corresponding to the link quality of the first communication node is greater than or equal to the RSRP value corresponding to the link quality of the second communication node, a notification message is sent to the network device; or, if the SINR value corresponding to the link quality of the first communication node is greater than or equal to the SINR value corresponding to the link quality of the second communication node, a notification message is sent to the network device. Thereby, the latency problem that in the related art, only after the network device triggers the beam management process, the terminal device can perform beam management according to the indication of the network device is avoided, and the communication efficiency is improved.

[0020] In some specific implementation manners, if the RSRP value corresponding to the link quality of the first communication node is greater than or equal to the RSRP value corresponding to the link quality of the second communication node, a notification message is sent to the network device, including: if the RSRP value corresponding to the link quality of the first communication node is greater than or equal to the sum of the RSRP value corresponding to the link quality of the second communication node and the first offset, a notification message is sent to the network device. Thereby, the latency problem that in the related art, only after the network device triggers the beam management process, the terminal device can perform beam management according to the indication of the network device is avoided, and the communication efficiency is improved.

[0021] In some specific implementation manners, if the SINR value corresponding to the link quality of the first communication node is greater than or equal to the SINR value corresponding to the link quality of the second communication node, a notification message is sent to the network device, including: if the SINR value corresponding to the link quality of the first communication node is greater than or equal to the sum of the SINR value corresponding to the link quality of the second communication node and the second offset, a notification message is sent to the network device. Thereby, the latency problem that in the related art, only after the network device triggers the beam management process, the terminal device can perform beam management according to the indication of the network device is avoided, and the communication efficiency is improved.

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

[0023] In some specific implementation manners, sending a notification message to the network device includes: sending a notification message to the network device at the first time after detecting that the terminal device meets the beam management condition.

[0024] In some specific implementation manners, notification information is sent to a network device through a Physical Uplink Control Channel (PUCCH) and / or a Physical Random Access Channel (PRACH), including: according to the type of beam management conditions, notification information is sent to the network device through the PUCCH or the PRACH.

[0025] In some specific implementation manners, the PUCCH or the PRACH is associated with a configuration of a Channel State Information (CSI) report.

[0026] In some specific implementation manners, sending notification information to a network device includes: sending notification information to the network device through a Medium Access Control Control Element (MAC CE), where the MAC CE includes beam management conditions 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, a Reference Signal Received Power (RSRP) value corresponding to the first reference signal, and a Signal-to-Interference plus Noise Ratio (SINR) value corresponding to the first reference signal.

[0027] In some specific implementation manners, sending notification information to a network device through a 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 conditions are met, and sending the notification information to the network device.

[0028] In some specific implementation manners, sending notification information to a network device through a MAC CE includes: carrying the MAC CE in a first PUSCH sent after a second time when the beam management conditions are met, and sending the notification information to the network device.

[0029] In some specific implementation manners, receiving feedback information about the notification information sent by the network device includes: receiving the 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).

[0030] In some specific implementation manners, receiving feedback information about the notification information sent by the network device includes: if another PUSCH with the same Hybrid Automatic Repeat reQuest Identity (HARD ID) as the PUSCH is detected, receiving the feedback information about the notification information sent by the network device.

[0031] In some specific implementation manners, 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 CSI report corresponding to a configuration of a CSI report, receiving the feedback information about the notification information sent by the network device.

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

[0033] In a second aspect, the present application provides a communication method, which is applied to a network device such as a base station. The method includes: receiving notification information sent by a terminal device, where the notification information is received when it is determined according to a first communication node and a second communication node that the terminal device meets a beam management condition, and the beam management condition is related to a link quality of a reference signal of the terminal device and / or a link quality associated with a channel of the terminal device; sending feedback information about the notification information to the terminal device. Thereby, the problem of time delay in beam management that in the related art, only after the network device triggers a beam management process, the terminal device can perform beam management according to the indication of the network device is avoided, and the communication efficiency is improved.

[0034] In some specific implementation manners, the communication node is a transmit receive point (TRP), a receiving panel of the terminal device, or a cell.

[0035] In some specific implementation manners, the beam management condition is that a link quality value of the first communication node is greater than or equal to a first threshold, and a link quality value of the second communication node is less than a second threshold. Thereby, the problem of time delay in beam management that in the related art, only after the network device triggers a beam management process, the terminal device can perform beam management according to the indication of the network device is avoided, and the communication efficiency is improved.

[0036] In some specific implementation manners, the first threshold is the same value as the threshold used for candidate beam detection.

[0037] In some specific implementation manners, a block error rate corresponding to the first threshold is a product of a block error rate corresponding to the threshold for candidate beam detection and a first scaling factor, and the first scaling factor is a coefficient configured by the network device.

[0038] In some specific implementation manners, a block error rate corresponding to the second threshold is a product of a block error rate corresponding to the threshold for beam failure detection and a second scaling factor, and the second scaling factor is a coefficient configured by the network device.

[0039] In some specific implementation manners, the beam management condition is that a link quality value of the first communication node is better than a link quality value of the second communication node. Thereby, the problem of time delay in beam management that in the related art, only after the network device triggers a beam management process, the terminal device can perform beam management according to the indication of the network device is avoided, and the communication efficiency is improved.

[0040] In some specific implementation manners, the beam management condition is that the link quality value of the first communication node is less than the block error rate corresponding to the link quality value of the second communication node. Thereby, the time delay problem that in the related art, only after the network device triggers the beam management process, the terminal device can perform beam management according to the indication of the network device is avoided, and the communication efficiency is improved.

[0041] In some specific implementation manners, the beam management condition is that the RSRP value corresponding to the link quality of the first communication node is greater than or equal to the RSRP value corresponding to the link quality of the second communication node, or the SINR value corresponding to the link quality of the first communication node is greater than or equal to the SINR value corresponding to the link quality of the second communication node. Thereby, the time delay problem that in the related art, only after the network device triggers the beam management process, the terminal device can perform beam management according to the indication of the network device is avoided, and the communication efficiency is improved.

[0042] In some specific implementation manners, the beam management condition is that the RSRP value corresponding to the link quality of the first communication node is greater than or equal to the sum of the RSRP value corresponding to the link quality of the second communication node and the first offset. Thereby, the time delay problem that in the related art, only after the network device triggers the beam management process, the terminal device can perform beam management according to the indication of the network device is avoided, and the communication efficiency is improved.

[0043] In some specific implementation manners, the SINR value corresponding to the link quality of the first communication node is greater than or equal to the sum of the SINR value corresponding to the link quality of the second communication node and the second offset. Thereby, the time delay problem that in the related art, only after the network device triggers the beam management process, the terminal device can perform beam management according to the indication of the network device is avoided, and the communication efficiency is improved.

[0044] 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 the PRACH.

[0045] 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.

[0046] In some specific implementation manners, receiving the notification information sent by the terminal device through the PUCCH and / or the PRACH includes: receiving the notification information sent by the terminal device through the PUCCH and / or the PRACH according to the type of the beam management condition.

[0047] In some specific implementation manners, the PUCCH or the PRACH is associated with a configuration of a channel state CSI report.

[0048] In some specific implementation manners, receiving notification information sent by a terminal device, including: receiving, through a Media Access Control Control Element (MAC CE), the notification information sent by the terminal device, where the MAC CE includes beam management conditions 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.

[0049] In some specific implementation manners, sending feedback information about the notification information to the terminal device, including: sending, by detecting a Physical Downlink Control Channel (PDCCH) scheduled in a Search Space (SS) or a Control Resource Set (CORESET), the feedback information about the notification information to the terminal device.

[0050] In a third aspect, the present application provides a terminal device, including: a memory for storing a computer program or computer instructions; and 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.

[0051] In a fourth aspect, the present application provides a network device, including: a memory for storing a computer program or computer instructions; and 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.

[0052] In a fifth aspect, the present application provides a communication system, including a terminal device and a network device, where 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.

[0053] In a sixth aspect, the present application provides a computer storage medium for storing a computer program, where when the computer program is executed, it is used to implement the methods according to the first aspect and the second aspect.

[0054] In a seventh aspect, the present application provides a communication device applied to a terminal device. The device includes: a quality value acquisition module, a notification information sending module, and a feedback information receiving module; the quality value acquisition module is configured to acquire link quality values of a first communication node and a second communication node; the notification information sending module is configured to send notification information to a network device if it is determined, according to the link quality values of the first communication node and the second communication node, that the terminal device meets a beam management condition, where the beam management condition is related to the link quality of a reference signal of the terminal device and / or the link quality associated with a channel of the terminal device; the feedback information receiving module is configured to receive feedback information about the notification information sent by the network device. Thereby, the latency problem in the related art that only after the network device triggers a beam management process can the terminal device perform beam management according to the indication of the network device is avoided, and the communication efficiency is improved.

[0055] In an eighth aspect, the present application provides a communication device applied to a network device. The device 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, where the notification information is received when it is determined, according to a first communication node and a second communication node, that the terminal device meets a beam management condition, 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; the feedback information sending module is configured to send feedback information about the notification information to the terminal device. Thereby, the latency problem in the related art that only after the network device triggers a beam management process can the terminal device perform beam management according to the indication of the network device is avoided, and the communication efficiency is improved.

[0056] Based on the above technical solutions, the present application has the following beneficial effects:

[0057] The present application provides a communication method and related devices. The terminal device detects whether it meets a beam management condition according to the link quality value of a first communication node and the link quality value of a second communication node. When the terminal device meets the beam management condition, it automatically sends notification information that has met the beam management condition to the network device to trigger a beam management process, thereby avoiding the latency problem in the related art that only after the network device triggers a beam management process can the terminal device perform beam management according to the indication of the network device, thereby improving the communication efficiency, reducing pilot overhead, and enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] 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;

[0059] Figure 2 FIG. is a flowchart of a communication method provided by an embodiment of the present application;

[0060] Figure 3 It is a flowchart of another communication method provided by an embodiment of the present application;

[0061] Figure 4 It is a schematic diagram of the hardware composition of an electronic device provided by an embodiment of the present application;

[0062] Figure 5 It is a schematic diagram of the hardware composition of another electronic device provided by an embodiment of the present application;

[0063] Figure 6 It is a schematic diagram of a communication device provided by an embodiment of the present application;

[0064] Figure 7 It is a schematic diagram of another communication device provided by an embodiment of the present application. Detailed implementation manners

[0065] Terms such as "first", "second", and "third" in the specification, claims, and accompanying drawings of the present application are used to distinguish different objects, rather than to limit a specific order.

[0066] In the embodiments of the present 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 the present 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.

[0067] The embodiments of the present 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.

[0068] The communication system includes a first device and a second device. The first device may be a device on the network side for providing network communication functions, and in some cases is also referred to as 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 may 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 may 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 in an embodiment of this application. Figure 1 It includes base station 1 and terminal 2.

[0069] In the embodiments provided in this application, the base station may be any device with wireless transceiver functions, including but not limited to: an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in Long Term Evolution (LTE), a base station (gNodeB or gNB) or a transmission receiving point (TRP) in New Radio (NR), a base station evolved by 3GPP in the future, an access node in a Wi-Fi system, a wireless relay node, a 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-site or non-co-site transmission reception points (TRPs). The base station may also be a radio controller, a centralized unit (CU), and / or a distributed unit (DU) in a 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 an LTE network, may also communicate with a base station supporting a 5G network, and may also perform dual connection with a base station supporting an LTE network and a 5G network.

[0070] In the embodiments provided in this 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 unit, 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.

[0071] As described above, in the prior art, when a terminal device is within the communication coverage of multiple network devices such as base stations, the network device needs to initiate a beam management process, use beam management technology to determine the network device with the best communication quality, and connect the terminal device to the network device with the best communication quality, so as to improve the signal transmission and reception effects of the enhanced communication system.

[0072] However, when the network device triggers the beam management process, the terminal device must wait for the indication of the network device, thus resulting in some delays. In some application scenarios with strong real-time requirements, the generation of delays will reduce the connection efficiency between the terminal device and the network device, thus affecting the user experience.

[0073] In view of this, this application provides a communication method and related devices. The terminal device detects whether the beam management condition is met according to the link quality value of the first communication node and the link quality value of the second communication node. When the terminal device 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, thus avoiding the delay problem in the related art where only after the network device triggers the beam management process can the terminal device perform beam management according to the indication of the network device, thereby improving the communication efficiency, reducing the pilot overhead, and enhancing the user experience.

[0074] To make the technical solution of this application clearer and easier to understand, the communication method of this application will be introduced below with reference to the accompanying drawings.

[0075] 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:

[0076] S201: The terminal device obtains the link quality value of the first communication node and the link quality value of the second communication node.

[0077] A communication node is a device or entity that plays a specific role and performs specific functions in a communication system.

[0078] In some specific implementation manners, the communication node may be a Transmission Reception Point (TRP). Among them, the TRP refers to a specific device or location for receiving and transmitting data, such as nodes like base stations and relay stations. It should be noted that different TRPs can be associated with different index values, and different TRPs can be distinguished through these index values.

[0079] In some other specific implementation manners, the communication node may be the receiving panel of the terminal device. Among them, the receiving panel refers to the part of the terminal device for receiving wireless signals, such as antennas, receiving circuits, demodulators, etc. It should be noted that different receiving panels can be associated with different index values, and different receiving panels can be distinguished through these index values.

[0080] In some other specific implementation manners, the communication node may be a cell. Among them, the cell refers to the communication coverage area of a base station. It should be noted that different cells can be associated with different serving cell identities or physical cell identities, and different cells can be distinguished through these serving cell identities or physical cell identities.

[0081] Information is exchanged between communication nodes through communication links to achieve data transmission, signaling transfer, and other communication services. The link quality of a communication node refers to the performance and stability of the communication link connecting network devices and terminal devices in a communication system. Exemplarily, the link quality of a communication node can be measured by multiple factors such as signal strength, signal-to-noise ratio, delay, jitter, packet loss rate, bandwidth, and bit error rate.

[0082] In the communication method disclosed in the embodiments of the present application, the link quality of the first communication node is obtained based on a first reference signal, and the first reference signal is associated with the first communication node. Further, the determination method of the first reference signal specifically includes at least one of the following two:

[0083] First, the first reference signal is the same as the reference signal for candidate beam detection. Among them, candidate beam detection refers to the process in a communication system where the receiving end detects and evaluates possible transmission beams, and is used to select the most suitable beam for the current communication environment, thereby improving the signal quality, coverage, and data transmission rate of the communication system.

[0084] Second, the first reference signal is a reference signal configured by the base station and specifically used for the terminal device to initiate subsequent beam management procedures.

[0085] In the communication method disclosed in the embodiments of the present application, the link quality of the second communication node is obtained based on a second reference signal, and the second reference signal is associated with the second communication node. Further, the determination method of the second reference signal specifically includes at least one of the following six:

[0086] First, the second reference signal is the same as the reference signal for beam failure detection. 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.

[0087] 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.

[0088] Thirdly, 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. 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. It should be noted that the above PDCCH is the PDCCH associated with the second communication node.

[0089] Fourthly, the second reference signal is determined by the reference signal of the Quasi Co-Location (QCL) of 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, then these two antenna ports are considered 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.

[0090] Fifthly, the second reference signal is determined by the reference signal associated with the 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 a channel is associated with a Transmission Configuration Indicator, then this signal or channel has a quasi co-location relationship with the reference signal indicated by this Transmission Configuration Indicator state.

[0091] Sixthly, the second reference signal is determined by the reference signal associated with the TCI state associated with the Control Resource Set (CORESET). Among them, the CORESET is a set of resources used to transmit control signaling, which helps to realize the control and scheduling of a wireless communication system. It should be noted that only the reference signals associated with the TCI states of some CORESETs can determine the link quality of the second communication node. 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 of the second communication node can be determined through this second reference signal.

[0092] In the communication method disclosed in the embodiments of the present application, the link quality of the first communication node and the link quality of the second communication node can be measured by the reference signal receiving power (RSRP) value obtained by the terminal device measuring the first reference signal and the second 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).

[0093] It should be noted that the larger the RSRP value and the SINR value, the better the link quality. That is to say, the magnitudes of the RSRP value and the SINR value are positively correlated with the link quality value.

[0094] S202: Determine whether the terminal device meets the beam management condition according to the link quality value of the first communication node and the link quality value of the second communication node. If so, execute S203.

[0095] When the terminal device detects that it meets at least one of the following two beam management conditions, execute step S203.

[0096] First, introduce the first beam management condition. The first beam management condition is that the link quality value of the first communication node is greater than or equal to the first threshold, and the link quality value of the second communication node is less than the second threshold.

[0097] 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, and this application does not make any limitations on this.

[0098] In some examples, the first threshold can be a value configured by network devices such as base stations or predefined by protocols.

[0099] In 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.

[0100] In some other examples, the first threshold may also be a value different from the threshold used for candidate beam detection. Specifically, the block error rate (BLER1) corresponding to the first threshold may be the BLER corresponding to the threshold for candidate beam detection multiplied by a scaling factor, which may be configured by the base station.

[0101] The second threshold (Threshold 2) is calculated based on assumed transmission parameters and corresponds to a specific block error rate (BLER), denoted as BLER2. The second threshold may be 10 -1 、10 -2 and so on. For this, the present application does not make any limitations.

[0102] In some examples, the second threshold may be a value configured by network devices such as the base station or predefined by the protocol.

[0103] In some other examples, the second threshold may also be a value different from the threshold used for beam failure detection. The threshold for beam failure detection is usually a parameter defined according to system design and performance requirements, mainly used to detect failed beams in the beam failure recovery process. Specifically, the BLER2 corresponding to the second threshold may be lower than the BLER corresponding to the threshold for candidate beam detection. For example, if the BLER corresponding to the threshold for candidate beam detection is 10 -1 The BLER2 corresponding to the second threshold is 5x10 -2 . Specifically, the BLER2 corresponding to the second threshold may be the BLER corresponding to the threshold for candidate beam detection multiplied by a scaling factor. The scaling factor may be configured by the base station and is a value greater than zero and less than 1.

[0104] It should be noted that the second threshold is usually a smaller value than the first threshold. For example, if the first threshold is a BLER of 10 -1 , then the BLER corresponding to the second threshold may be 10 -2 .

[0105] Secondly, the second beam management condition is introduced. The second beam management condition is that the link quality value of the first communication node is better than the link quality value of the second communication node.

[0106] Specifically, the situation where the link quality value of the first communication node is better than the link quality value of the second communication node may specifically include the following six cases:

[0107] First, the RSRP value corresponding to the link quality of the first communication node is greater than or equal to the RSRP value corresponding to the link quality of the second communication node.

[0108] Second, the RSRP value corresponding to the link quality of the first communication node is greater than or equal to the RSRP value corresponding to the link quality of the second communication node plus an offset.

[0109] Third, the SINR value corresponding to the link quality of the first communication node is greater than or equal to the SINR value corresponding to the link quality of the second communication node.

[0110] Fourth, the SINR value corresponding to the link quality of the first communication node is greater than or equal to the SINR value corresponding to the link quality of the second communication node plus an offset.

[0111] Fifth, the block error rate corresponding to the link quality value of the first communication node is less than the block error rate corresponding to the link quality value of the second communication node.

[0112] Sixth, the link quality value of the first communication node is less than the block error rate corresponding to the link quality value of the second communication node. Or, the link quality value of the first communication node is less than the block error rate corresponding to the link quality value of the second communication node multiplied by a scaling factor, which can be configured by network devices such as base stations, and the scaling factor is a value greater than 0 and less than 1.

[0113] S203: The terminal device sends the notification information that has met the beam management condition to the network device.

[0114] In some specific implementation manners, the notification information can be sent to network devices such as base stations through a Physical Uplink Control Channel (PUCCH) or a Physical Random Access Channel (PRACH) resource. Among them, PUCCH is a physical uplink control channel in a wireless communication system, which 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. PRACH is a physical random access channel in a wireless communication system, which is used for the terminal device to perform initial access in the network or request resources when needed.

[0115] 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 the terminal device detects that the first beam management condition is met, it can send the notification information that has met the beam management condition to the network device through the PRACH. When the terminal device detects that the second beam management condition is met, it can send the notification information that has met the beam management condition to the network device through another PRACH. The present application does not limit this.

[0116] In the communication method disclosed in the embodiments of the present application, different Physical Uplink Control Channels (PUCCHs) or Physical Random Access Channels (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 the terminal device detects that the first beam management condition is met, it may send the notification information that the beam management condition has been met 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 met, it may send the notification information that the beam management condition has been met to the network device through the PRACH, and use the spatial filtering information obtained based on the first reference signal for sending the PRACH. For example, the receive beam information obtained based on the first reference signal is used to determine the transmit beam information of the PRACH. In the communication method disclosed in the embodiments of the present application, the above-mentioned notification information may be sent after the first time T1 after the terminal device is detected to meet 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 millisecond (ms), etc., and the present application does not limit the specific first time.

[0117] In some other specific implementation manners, the notification information may also be sent to network devices such as the base station through a Medium 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 Logical 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. It should be noted that the physical channel carrying the MAC CE is a channel associated with the first communication node.

[0118] In the communication method disclosed in the embodiments of the present application, the MAC CE at least includes one or more of the satisfied beam management conditions, the index information of the communication node, and the first reference signal information.

[0119] In some examples, the first reference signal information may include the reference signal index of the first reference signal, and / or, the Reference Signal Received Power (RSRP) and / or Signal-to-Interference-plus-Noise Ratio (SINR) value corresponding to the first reference signal. In some other examples, for the first reference signal included in the MAC CE, the link quality value of the corresponding reference signal is greater than or equal to the first threshold.

[0120] In the communication method disclosed in the embodiments of the present application, the MAC CE can be transmitted on one of the following physical channels: First, the MAC CE is transmitted in the Physical Uplink Shared Channel (PUSCH) scheduled by the first Downlink Control Information (DCI) after the beam management condition is met. Among them, the PUSCH is used to transmit user data sent by the terminal device to network devices such as the base station, and the PUSCH allows multiple terminal devices to perform uplink data transmission on the same time and frequency resources. It should be noted that the PUSCH scheduled by the DCI is not the PUSCH for data retransmission.

[0121] Second, the MAC CE is transmitted in the PUSCH of the first configured grant (CG) sent after the second time T2 after the beam management condition is met. In a communication system, the configuration or authorization of specific resources allows the 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.

[0122] S204: The terminal device receives the feedback information of the network device about the notification information.

[0123] In the communication method disclosed in the embodiments of the present application, the feedback information corresponding to the notification information can be obtained in one of the following ways:

[0124] First, the terminal device detects the search space dedicated to the terminal to initiate the beam management process, or the Physical Downlink Control Channel (PDCCH) scheduled in the Control Resource Set (CORESET). Specifically, the terminal device can monitor the PDCCH scheduled in the search space or the control resource set. If the PDCCH scheduled in the search space or the control resource set is monitored, it indicates that the terminal device has accepted the feedback information about the notification information, and thus can perform corresponding operations according to the corresponding indication in the feedback information.

[0125] Second, the terminal device detects another PUSCH with the same Hybrid Automatic Repeat Request (HARQ) ID as the PUSCH carrying the MAC CE, and this another PUSCH is associated with the first communication node. Among them, 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 with the same HARQ ID as the PUSCH carrying the MAC CE, it means that the terminal device has accepted the feedback information about the notification information, and thus can perform corresponding operations according to the corresponding indication in the feedback information.

[0126] Third, the terminal device receives an activation command for a CSI report. It should be noted that in addition to being associated with the first communication node, the CSI report also needs to be associated with the above beam management conditions, or, associated with the above first reference signal. Further, the CSI report is the same CSI report as the CSI report associated in the foregoing notification information.

[0127] It should be noted that if the terminal device does not receive feedback information about the notification information within the target duration after sending the notification information, the terminal needs to continue to send the notification information until the terminal device receives the feedback information. The target duration is the third time T3, and it should be noted that the third time T3 is related to the terminal capabilities.

[0128] In summary, the embodiments of the present application disclose a communication method. The terminal device detects whether the beam management conditions are satisfied according to the link quality value of the first communication node and the link quality value of the second communication node. When the terminal device satisfies the beam management conditions, it automatically sends the notification information that has satisfied the beam management conditions to the network device to trigger the beam management process, thereby avoiding the delay problem in the related art where only after the network device triggers the beam management process, the terminal device can perform beam management according to the instructions of the network device, thereby improving the communication efficiency and enhancing the user experience.

[0129] See Figure 3 , this figure is a schematic diagram of another communication method provided by the embodiments of the present application. This method is applied to terminal devices such as base stations. This method includes:

[0130] S301: The network device receives the notification information that has satisfied the beam management conditions sent by the terminal device.

[0131] S302: The network device sends feedback information about the notification information to the terminal device.

[0132] In some specific implementation manners, the communication node is a transmission and reception point (TRP), a receiving panel of the terminal device, or a cell.

[0133] In some specific implementation manners, the beam management conditions are that the link quality value of the first communication node is greater than or equal to a first threshold, and the link quality value of the second communication node is less than a second threshold.

[0134] In some specific implementation manners, the first threshold is the same value as the threshold used for candidate beam detection.

[0135] 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 a first scaling factor, and the first scaling factor is a coefficient configured by the network device.

[0136] 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 the second scaling factor, and the second scaling factor is a factor configured by the network device.

[0137] In some specific implementation manners, the beam management condition is that the link quality value of the first communication node is greater than or equal to the link quality value of the second communication node.

[0138] In some specific implementation manners, the beam management condition is that the RSRP value corresponding to the link quality of the first communication node is greater than or equal to the RSRP value corresponding to the link quality of the second communication node, or the SINR value corresponding to the link quality of the first communication node is greater than or equal to the SINR value corresponding to the link quality of the second communication node.

[0139] In some specific implementation manners, the beam management condition is that the RSRP value corresponding to the link quality of the first communication node is greater than or equal to the sum of the RSRP value corresponding to the link quality of the second communication node and the first offset.

[0140] In some specific implementation manners, the SINR value corresponding to the link quality of the first communication node is greater than or equal to the sum of the SINR value corresponding to the link quality of the second communication node and the second offset.

[0141] In some specific implementation manners, receiving the notification information sent by the receiving terminal device includes: receiving the notification information sent by the receiving terminal device through the PUCCH and / or PRACH.

[0142] In some specific implementation manners, receiving the notification information sent by the receiving terminal device includes: receiving the notification information sent by the receiving 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.

[0143] In some specific implementation manners, receiving the notification information sent by the receiving terminal device through the PUCCH and / or PRACH includes: receiving the notification information sent by the receiving terminal device through the PUCCH and / or PRACH according to the type of the beam management condition.

[0144] In some specific implementation manners, the PUCCH or PRACH is associated with a configuration of a channel state CSI report.

[0145] In some specific implementation manners, receiving notification information sent by a terminal device includes: receiving, through a Media Access Control Control Element (MAC CE), the notification information sent by the terminal device, where the MAC CE includes beam management conditions 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.

[0146] In some specific implementation manners, sending feedback information about the notification information to the terminal device includes: sending, by detecting a Physical Downlink Control Channel (PDCCH) scheduled in a Search Space (SS) or a Control Resource Set (CORESET), the feedback information about the notification information to the terminal device.

[0147] In summary, an embodiment of the present application discloses a communication method. When a network device receives notification information sent by a terminal device that has satisfied beam management conditions, the network device sends feedback information about the notification information to the terminal device, improving the efficiency of identifying the optimal beam and enhancing the user experience.

[0148] 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.

[0149] 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 a base station structure is shown. The base station includes a part 410, a part 420, and a part 430. The part 410 is mainly used for baseband processing and controlling the base station, etc.; the part 410 is usually the control center of the base station and can usually be referred to as a processor for controlling the base station to execute the processing operations on the first device side in the foregoing method embodiments. The part 420 is mainly used for storing computer program codes and data. The part 430 is mainly used for transceiver of radio frequency signals and conversion between radio frequency signals and baseband signals; the part 430 can usually be referred to as a transceiver module, a transceiver, a transceiver circuit, or a transceiver, etc. The transceiver module of the part 430 can also be referred to as a transceiver or a transceiver, etc., and it 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 part 430 can be regarded as a receiver, and the devices used to implement the sending function can be regarded as a transmitter, that is, the part 430 includes a receiver 432 and a transmitter 431. The receiver can also be referred to as a receiving module, a receiver, or a receiving circuit, etc., and the transmitter can be referred to as a transmitting module, a transmitter, or a transmitting circuit, etc.

[0150] 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 programs in the memory to implement baseband processing functions and control of the base station. If there are multiple single boards, they can be interconnected to enhance processing capabilities. As an alternative implementation, 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 simultaneously share one or more processors.

[0151] For example, in one implementation, 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.

[0152] It should be understood that Figure 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.

[0153] Refer to Figure 5 , which is a schematic diagram of the hardware composition of another electronic device provided by an embodiment of the present application. The electronic device may be the 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, the electronic device may include a processor 510, an external memory interface 520, an internal memory 521, antenna 1, antenna 2, a mobile communication module 530, and a wireless communication module 540, etc.

[0154] 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, or combine certain components, or split certain components, or have different component arrangements. The components shown may be implemented in hardware, software, or a combination of software and hardware.

[0155] 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.

[0156] It can be understood that the interface connection relationships between the modules illustrated in this embodiment are only illustrative descriptions and do 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.

[0157] The external memory interface 520 may be used to connect an external memory card, such as a Micro SD card, to implement the storage capacity expansion 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.

[0158] The internal memory 521 may be used to store computer-executable program codes, and the executable program codes include instructions. The processor 510 executes various functional applications and data processing of the electronic device by running the instructions stored in the internal memory 521. The internal memory 521 may include a program storage area and a data storage area. Among them, the program storage area may 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 may store data created during the use of the electronic device (such as audio data, a phone book, etc.). In addition, the internal memory 521 may include a high-speed random access memory and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (UFS), etc. The processor 510 executes various functional applications and data processing of the electronic device by running the instructions stored in the internal memory 521 and / or the instructions stored in the memory provided in the processor.

[0159] The wireless communication function of the electronic device can be implemented by antenna 1, antenna 2, mobile communication module 530, wireless communication module 540, modulation and demodulation processor, baseband processor, etc.

[0160] 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 the diversity antenna of the wireless local area network. In some other embodiments, the antenna can be used in combination with a tuning switch.

[0161] The mobile communication module 530 can provide solutions for wireless communications such as 2G / 3G / 4G / 5G 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 for radiation. In some embodiments, at least some functional modules of the mobile communication module 530 can be disposed 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 disposed in the same device.

[0162] In some embodiments, the electronic device initiates or receives a call request through the mobile communication module 530 and antenna 1.

[0163] 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-provided electronic devices can refer to the corresponding method embodiments provided above, and will not be elaborated here.

[0164] This application also provides a communication system, which can include a first device (such as a network device such as a base station) as shown in Figure 4 and a second device (such as a terminal such as a mobile phone) as shown in Figure 5 .

[0165] In this application, a terminal or a network device may include a hardware layer, an operating system layer running on top of 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 known as main memory). The operating system in the operating system layer can 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, and an instant messaging software.

[0166] See Figure 6 , this figure is a schematic diagram of a communication device provided by an embodiment of this application. The communication device 600 is applied to a terminal device and includes: a quality value acquisition module 601, a notification information sending module 602, and a feedback information receiving module 603.

[0167] Specifically, the quality value acquisition module 601 is configured to acquire the link quality values of a first communication node and a second communication node;

[0168] The notification information sending module 602 is configured to determine that the terminal device meets the beam management condition according to the link quality values of the first communication node and the second communication node, and then send notification information to the network device. 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;

[0169] The feedback information receiving module 603 is configured to receive the feedback information about the notification information sent by the network device.

[0170] In summary, this application provides a communication device, which avoids the latency problem in the related technology that only after the network device triggers the beam management process, the terminal device can perform beam management according to the instructions of the network device, and improves the communication efficiency.

[0171] See Figure 7 , this figure is a schematic diagram of another communication device provided by an embodiment of this 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.

[0172] Specifically, a notification information receiving module 701 is configured to receive notification information sent by a terminal device. The notification information is received when it is determined that the terminal device meets beam management conditions based on a first communication node and a second communication node. 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.

[0173] A feedback information sending module 702 is configured to send feedback information about the notification information to the terminal device.

[0174] In summary, the present application provides a communication device, which avoids the latency problem in the related art that only after the network device triggers the beam management process, the terminal device can perform beam management according to the indication of the network device, and improves the communication efficiency.

[0175] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described system, device, and apparatus can refer to the corresponding processes in the foregoing method embodiments, and will not be described herein again.

[0176] As described above, 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. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A communication method, characterized in that, Applied to a terminal device, the method includes: Obtaining link quality values of a first communication node and a second communication node of the terminal device; If it is determined, based on the link quality values of the first communication node and the second communication node, that the terminal device meets a beam management condition, sending a notification message to a network device, where the beam management condition is related to the link quality value of the first communication node and / or the link quality value of the second communication node; Receiving feedback information about the notification message sent by the network device.

2. The method according to claim 1, wherein The communication node is a transmission and reception point (TRP), a receiving panel of the terminal device, or a cell.

3. The method according to claim 1, wherein The obtaining the link quality value of the first communication node includes: Obtaining the link quality value of a first reference signal associated with the first communication node.

4. The method according to claim 3, characterized in that, The determining method of the first reference signal includes: Determining the first reference signal according to a reference signal for candidate beam detection and / or according to a target reference signal configured by the network device.

5. The method according to claim 1, characterized in that The obtaining the link quality value of the second communication node includes: Obtaining the link quality value of a second reference signal associated with the second communication node.

6. The method according to claim 5, wherein The determining method of the second reference signal includes: Determining the second reference signal according to a reference signal for beam failure detection; and / or, determining the second reference signal according to a target reference signal configured by the network device; and / or, determining the second reference signal through a demodulation reference signal (DMRS) associated with a physical downlink control channel (PDCCH), where the PDCCH is associated with the second communication node; and / or, determining the second reference signal through a reference signal quasi-co-located with the DMRS associated with the PDCCH; and / or, determining the second reference signal through a reference signal associated with an activated transmission configuration indication (TCI) state; and / or, determining the second reference signal through a reference signal associated with a TCI state corresponding to a control resource set (CORESET).

7. The method according to claim 1, wherein The if it is determined, based on the link quality values of the first communication node and the second communication node, that the terminal device meets a beam management condition, then sending a notification message to the network device includes: If the link quality value of the first communication node is greater than or equal to a first threshold and the link quality value of the second communication node is less than a second threshold, sending a notification message to the network device.

8. The method according to claim 7, wherein The first threshold and the second threshold are values configured by the network device or values predefined by the protocol.

9. The method according to claim 7, wherein The first threshold is the same value as the threshold for candidate beam detection.

10. The method according to claim 7, wherein 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.

11. The method according to claim 7, wherein The block error rate corresponding to the second threshold is the product of the block error rate corresponding to the threshold for beam failure detection and a second scaling factor, where the second scaling factor is a coefficient configured by the network device.

12. The method according to claim 1, characterized in that, The if it is determined, based on the link quality values of the first communication node and the second communication node, that the terminal device meets a beam management condition, then sending a notification message to the network device includes: If the link quality value of the first communication node is better than that of the second communication node, a notification message is sent to the network device.

13. The method according to claim 12, wherein The case where if the link quality value of the first communication node is better than that of the second communication node, a notification message is sent to the network device includes: If the block error rate corresponding to the link quality value of the first communication node is less than that of the second communication node, a notification message is sent to the network device.

14. The method according to claim 12, wherein The case where if the link quality value of the first communication node is better than that of the second communication node, a notification message is sent to the network device includes: If the RSRP value corresponding to the link quality of the first communication node is greater than or equal to the RSRP value corresponding to the link quality of the second communication node, a notification message is sent to the network device; Or, if the SINR value corresponding to the link quality of the first communication node is greater than or equal to the SINR value corresponding to the link quality of the second communication node, a notification message is sent to the network device.

15. The method according to claim 14, wherein The case where if the RSRP value corresponding to the link quality of the first communication node is greater than or equal to the RSRP value corresponding to the link quality of the second communication node, a notification message is sent to the network device includes: If the RSRP value corresponding to the link quality of the first communication node is greater than or equal to the sum of the RSRP value corresponding to the link quality of the second communication node and the first offset, a notification message is sent to the network device.

16. The method according to claim 14, wherein The case where if the SINR value corresponding to the link quality of the first communication node is greater than or equal to the SINR value corresponding to the link quality of the second communication node, a notification message is sent to the network device includes: If the SINR value corresponding to the link quality of the first communication node is greater than or equal to the sum of the SINR value corresponding to the link quality of the second communication node and the second offset, a notification message is sent to the network device.

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

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

19. The method according to claim 17, wherein The case where sending the notification message to the network device through the physical uplink control channel PUCCH and / or the physical random access channel PRACH includes: According to the type of the beam management condition, the notification message is sent to the network device through PUCCH or PRACH.

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

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

22. The method according to claim 19, wherein Sending a notification message to a 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 a notification message to the network device.

23. The method according to claim 21, wherein Sending a notification message to a network device through a Media 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 satisfied, and sending a notification message to the network device.

24. The method according to claim 1, wherein Receiving feedback information about the notification message sent by the network device includes: Receiving 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).

25. The method according to claim 22, characterized in that, Receiving feedback information about the notification message 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 message sent by the network device.

26. The method according to claim 20, wherein Receiving feedback information about the notification message sent by the network device includes: If a trigger command for triggering a Channel State Information (CSI) report corresponding to a configuration of a CSI report is received, receiving feedback information about the notification message sent by the network device.

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

28. A communication method, characterized in that, Applied to a network device, the method includes: Receiving a notification message sent by a terminal device, where the notification message is received when it is determined that the terminal device satisfies a beam management condition based on a first communication node and a second communication node of the terminal device, and the beam management condition is related to a link quality value of the first communication node and / or a link quality value of the second communication node; Sending feedback information about the notification message to the terminal device.

29. The method according to claim 28, wherein The communication node is a Transmission and Reception Point (TRP), a receiving panel of the terminal device, or a cell.

30. The method according to claim 28, wherein The beam management condition is that the link quality value of the first communication node is greater than or equal to a first threshold, and the link quality value of the second communication node is less than a second threshold.

31. The method according to claim 30, characterized in that, The first threshold is the same value as the threshold for candidate beam detection.

32. The method according to claim 30, wherein, 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, and the first scaling factor is a coefficient configured by the network device.

33. The method according to claim 30, wherein, The block error rate corresponding to the second threshold is the product of the block error rate corresponding to the threshold for beam failure detection and a second scaling factor, and the second scaling factor is a coefficient configured by the network device.

34. The method according to claim 28, wherein The beam management condition is that the link quality value of the first communication node is better than the link quality value of the second communication node.

35. The method according to claim 34, characterized in that, The beam management condition is that the link quality value of the first communication node is less than the block error rate corresponding to the link quality value of the second communication node.

36. The method according to claim 34, wherein The beam management condition is that the RSRP value corresponding to the link quality of the first communication node is greater than or equal to the RSRP value corresponding to the link quality of the second communication node, or the SINR value corresponding to the link quality of the first communication node is greater than or equal to the SINR value corresponding to the link quality of the second communication node.

37. The method according to claim 36, wherein The beam management condition is that the RSRP value corresponding to the link quality of the first communication node is greater than or equal to the sum of the RSRP value corresponding to the link quality of the second communication node and the first offset.

38. The method according to claim 36, wherein The SINR value corresponding to the link quality of the first communication node is greater than or equal to the sum of the SINR value corresponding to the link quality of the second communication node and the second offset.

39. The method according to claim 28, wherein The notification information sent by the receiving terminal device includes: Receive the notification information sent by the receiving terminal device through PUCCH and / or PRACH.

40. The method according to claim 39, wherein The notification information sent by the receiving terminal device includes: Receive the notification information sent by the receiving 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.

41. The method according to claim 39, wherein The receiving the notification information sent by the receiving terminal device through PUCCH and / or PRACH includes: According to the type of the beam management condition, receive the notification information sent by the receiving terminal device through PUCCH and / or PRACH.

42. The method according to claim 41, wherein The PUCCH or PRACH is associated with a configuration of a channel state CSI report.

43. The method according to claim 28, wherein The notification information sent by the receiving terminal device includes: Receive the notification information sent by the receiving terminal device through a media access control control element MAC CE, where the MAC CE 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 the first reference signal, the RSRP value corresponding to the first reference signal, and the SINR value corresponding to the first reference signal.

44. The method according to claim 28, wherein Sending the feedback information about the notification information to the terminal device includes: Send the feedback information about the notification information to the terminal device by detecting the PDCCH scheduled in the search space SS or CORESET.

45. 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 27.

46. 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 28 to 44.

47. A communication system, characterized in that, The system includes a terminal device and the network device, the terminal device is used to execute the method according to any one of claims 1 to 27, and the network device is used to execute the method according to any one of claims 28 to 44.

48. 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 44.

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