Communication method and related device

Abstract

The invention discloses a communication method and a related device, and the method comprises the steps: terminal equipment obtains first information, and the first information comprises the signal quality of a wireless link between the terminal equipment and network equipment, and / or the signal quality of a beam between the terminal equipment and the network equipment; the terminal equipment receives second information from the network equipment, wherein the second information is related to the power headroom of the network equipment; and the terminal equipment carries out beam failure monitoring and recovery and / or wireless link monitoring and recovery according to the first information and the second information. According to the invention, in the process that the terminal equipment detects and recovers the beam and / or the wireless link, the power headroom of the network equipment is considered, so that the terminal equipment is prevented from executing reconstruction or beam switching in advance on the premise that the network equipment still has the power headroom, thereby reducing the network energy consumption and reducing the energy consumption loss.

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 continuous expansion of the network scale, the network energy consumption is also continuously increasing. During the communication process between a terminal device and a network device, situations such as beam failure or radio link failure may occur. In this regard, the terminal device can monitor the beam and / or radio link based on the measurement results of the signal. However, in a scenario where the transmission power of the network device can be dynamically adjusted, if the network device does not transmit signals at full power, directly monitoring the beam and / or radio link based on the measurement results of the signal may increase unnecessary connection reconstruction or recovery processes and increase network energy consumption. Summary of the Invention

[0003] This application provides a communication method and related devices, which can reduce network energy consumption.

[0004] In a first aspect of this application, a communication method is provided. This method is executed by a terminal device, or by some components in the terminal device (such as a processor, a chip, or a chip system, etc.), or the terminal device can be a logical module or software that can implement all or part of the communication device functions. In this method, the terminal device obtains first information, where the first information includes the signal quality of the radio link between the terminal device and the network device, and / or the signal quality of the beam between the terminal device and the network device; the terminal device receives second information from the network device, where the second information is related to the power margin of the network device; the terminal device performs beam failure monitoring and recovery, and / or radio link monitoring and recovery according to the first information and the second information.

[0005] Based on the above technical solution, during the process of the terminal device detecting and recovering the beam and / or radio link, the power margin of the network device is considered to avoid the terminal device prematurely performing reconstruction or beam switching on the premise that the network device still has a power margin, thereby reducing network energy consumption and reducing energy consumption losses.

[0006] Optionally, the signal quality of the radio link between the terminal device and the network device and / or the signal quality of the beam may be obtained based on a reference signal.

[0007] For example, when the terminal device communicates with the network device via the downlink, the reference signal may include one or more of the following: channel state information reference signal (CSI-RS), secondary synchronization signal (SSS), primary synchronization signal (PSS), cell specific reference signal (CRS), demodulation reference signal (DMRS), and synchronization signal / physical broadcast channel block (SS / PBCH block), etc. Among them, SS / PBCH block may be abbreviated as synchronization signal block (SSB).

[0008] For another example, when the terminal device communicates with the network device via the sidelink, the reference signal may include sidelink synchronization signal / physical broadcast channel block (sidelink SSB, SL-SSB, or S-SS / PSBCH block), sidelink channel state information reference signal (SL-CSI-RS), etc.

[0009] Optionally, the second information indicates the range of the power headroom and / or whether there is a power headroom.

[0010] In a possible implementation manner of the first aspect, the terminal device performs wireless link monitoring and recovery according to the first information and the second information, including:

[0011] When the first condition is satisfied, the terminal device sends a first signal to the network device, and the first signal is used to trigger the network device to adjust the transmission power.

[0012] Based on the above technical solution, during the wireless link monitoring and recovery process, the terminal device will send a first signal to the network device when the first condition is satisfied to trigger the network device to adjust the transmission power. If the first condition is not satisfied, the terminal device will perform reconstruction.

[0013] In a possible implementation of the first aspect, the terminal device includes a first module and a second module for transmitting and receiving information. At least one of the first module and the second module is different in power consumption, hardware composition, and waveform of the transmitted signal. The power consumption of the first module is less than that of the second module. The terminal device sending the first signal to the network device includes:

[0014] The terminal device sends the first signal to the network device based on the first module.

[0015] Based on the above technical solution, the terminal device includes a first module with lower power consumption and a first module with higher power consumption. The terminal device sends the first signal to the network device based on the first module with lower power consumption, which can further reduce the device energy consumption.

[0016] Optionally, when the terminal device sends the first signal to the network device based on the first module, the network device can receive the first signal based on the first module and then adjust the transmission power of the second module of the network device according to the first signal.

[0017] Optionally, the terminal device can also send the first signal to the network device based on the second module. Correspondingly, the network device receives the first signal based on the first module / second module and then adjusts the transmission power of the second module of the network device according to the first signal.

[0018] In a possible implementation of the first aspect, the first condition includes at least one of the following:

[0019] The terminal device continuously sends N out-of-sync indications to the upper layer, and the network device has power headroom, where N is less than N310 and N is a positive integer; or,

[0020] The terminal device continuously sends N310 out-of-sync indications to the upper layer, and the network device has power headroom.

[0021] Based on the above technical solution, in the process of wireless link monitoring and recovery, the influence of the power headroom of the network device is considered. When the network device has power headroom, the link is preferentially restored by triggering the network device to adjust the transmission power. On the premise that the network device has power headroom, when the terminal device detects that it continuously sends N out-of-sync indications to the upper layer, N is set to be less than N310, thus eliminating the start of the timer T310 and avoiding triggering a wireless link failure.

[0022] In a possible implementation of the first aspect, the conditions for the terminal device to send out-of-sync indications include at least one of the following:

[0023] The signal quality of the wireless link is less than the first threshold; or,

[0024] The signal quality of the wireless link is less than a first threshold, and the network device has power headroom.

[0025] Based on the above technical solution, the terminal device incorporates the power headroom of the network device as one of the conditions for sending an out-of-sync indication, so that when the network device has power headroom, it preferentially triggers the network device to adjust the transmission power to restore the link, in order to reduce connection reconstruction.

[0026] In a possible implementation of the first aspect, the terminal device performs beam failure monitoring and recovery according to first information and second information, including:

[0027] When a second condition is met, the terminal device sends a first signal to the network device, and the first signal is used to trigger the network device to adjust the transmission power.

[0028] Based on the above technical solution, during beam failure monitoring and recovery, the terminal device will send a first signal to the network device when the second condition is met to trigger the network device to adjust the transmission power. If the first condition is not met, the terminal device will perform beam switching.

[0029] In a possible implementation of the first aspect, the second condition includes at least one of the following:

[0030] The number of beam failure indications is equal to a second threshold, and the first beam has power headroom; or,

[0031] The signal quality of the first beam is less than a third threshold, and the first beam has power headroom, and the second threshold is less than the third threshold; or,

[0032] The sum of the signal quality of the first beam and the power headroom of the first beam is greater than or equal to a fourth threshold; or,

[0033] The signal quality of the first beam is less than a fifth threshold, and the sum of the signal quality of the first beam and the power headroom of the first beam is greater than or equal to a sixth threshold; or,

[0034] The signal quality of the candidate beam is less than the fifth threshold, and the sum of the signal quality of the candidate beam and the power headroom of the candidate beam is greater than or equal to the sixth threshold.

[0035] Based on the above technical solution, during beam failure monitoring and recovery, the influence of the power headroom of the beam is considered. When the beam has power headroom, the beam is preferentially restored by triggering the network device to adjust the transmission power.

[0036] In a possible implementation of the first aspect, the condition for the terminal device to send a beam failure indication is:

[0037] The signal quality of the first beam is less than the third threshold; or,

[0038] The signal quality of the first beam is less than a third threshold, and there is no power margin for the first beam; or,

[0039] The signal quality of the first beam is less than a third threshold, and the signal quality of the candidate beam is greater than or equal to the third threshold; or,

[0040] The signal quality of the first beam is less than a third threshold, and the signal quality of the candidate beam is greater than or equal to a seventh threshold.

[0041] Based on the above technical solution, the terminal device includes the power margin of the beam as one of the conditions for the transmission beam failure indication, so that when there is a power margin for the beam, the network device is preferentially triggered to adjust the transmission power to recover the beam, thereby reducing unnecessary beam switching processes.

[0042] Optionally, the beam failure indication may also be referred to as a beam failure event indication or a beam failure instance indication.

[0043] In a possible implementation manner of the first aspect, the terminal device performs beam failure monitoring and recovery according to first information and second information, including:

[0044] When a third condition is met, the terminal device sends a second signal to the network device, and the second signal is used to switch from the first beam to the candidate beam.

[0045] Based on the above technical solution, during the beam failure monitoring and recovery process of the terminal device, the terminal device will send a second signal to the network device when the third condition is met to trigger beam switching.

[0046] In a possible implementation manner of the first aspect, the third condition includes:

[0047] The sum of the signal quality of the first beam and the power margin of the first beam is less than a fourth threshold, and the sum of the signal quality of the candidate beam and the power margin of the candidate beam is greater than or equal to the fourth threshold.

[0048] Based on the above technical solution, the terminal device includes the power margin of the first beam as one of the conditions for beam switching. When the sum of the signal quality of the first beam and the power margin of the first beam is less than the fourth threshold, it indicates that adjusting the transmission power of the first beam can no longer recover the first beam. In this case, beam switching is performed, thereby reducing unnecessary beam recovery and switching processes.

[0049] In a possible implementation manner of the first aspect, at least one of the resources, waveforms, and sequences of the first signal and the second signal is different.

[0050] Based on the above technical solution, the first signal is used to trigger the network device to adjust the transmission power, and the second signal is used to switch from the first beam to the candidate beam. The terminal device can perform a beam recovery request based on different scenarios using one or more of different resources (time-frequency resources), waveforms (different signals), or sequences (different preamble sequences), and preferentially adjust the radio link quality by adjusting the transmission power of the network device to ensure the availability of the connection / beam.

[0051] In a possible implementation manner of the first aspect, the method further includes:

[0052] If the terminal device does not detect an adjustment in the transmission power of the network device within the first time period, or if the signal quality of the first beam is less than a third threshold after the terminal device detects an adjustment in the transmission power of the network device within the first time period, the terminal device sends a beam recovery request failure indication to the upper layer.

[0053] Based on the above technical solution, for the case where the first signal triggers the network device to adjust the transmission power, after the terminal device sends the first signal to the network device, it processes the beam recovery response process in combination with the adjustment of the transmission power of the network device to ensure the availability of the current beam.

[0054] In a second aspect of the present application, a communication method is provided. This method is executed by a network device, or by some components in the network device (such as a processor, a chip, or a chip system, etc.), or the network device can be a logical module or software that can implement all or part of the communication device functions. The network device includes a first module and a second module for transmitting and receiving information. At least one of the first module and the second module is different in power consumption, hardware composition, and the waveform of the transmitted signal. The power consumption of the first module is less than that of the second module. In this method, the network device sends second information to the terminal device, and the second information is related to the power margin of the second module of the network device.

[0055] Similar to the terminal device, the network device also includes a first module with lower power consumption and a second module with higher power consumption. Since the transmission power of the second module can be dynamically adjusted, the network device sends second information to the terminal device so that the terminal device adjusts the radio link quality based on the power margin of the network device to ensure the availability of the connection or beam.

[0056] In a possible implementation manner of the second aspect, the method further includes:

[0057] The network device receives a first signal from the terminal device;

[0058] The network device adjusts the transmission power of the second module of the network device according to the first signal.

[0059] In a possible implementation of the second aspect, receiving the first signal from the terminal device includes:

[0060] The network device receives the first signal from the terminal device based on the first module;

[0061] In a possible implementation of the second aspect, the method further includes:

[0062] The network device sends the third information to the terminal device, where the third information is used to indicate the threshold N of the number of out-of-sync indications sent by the terminal device. N is related to the first condition for the terminal device to send the first signal, and N is less than or equal to N310.

[0063] In a possible implementation of the second aspect, the method further includes:

[0064] The network device sends the fourth information to the terminal device, where the fourth information is used to configure at least one of the following information:

[0065] The first threshold corresponding to the signal quality of the wireless link; or,

[0066] The second threshold corresponding to the number of beam failure indications; or,

[0067] The third threshold corresponding to the signal quality of the first beam; or,

[0068] The fourth threshold corresponding to the sum of the signal quality of the first beam and the power margin of the first beam; or,

[0069] The fifth threshold corresponding to the signal quality of the first beam; or,

[0070] The fifth threshold corresponding to the signal quality of the candidate beam; or,

[0071] The sixth threshold corresponding to the sum of the signal quality of the candidate beam and the power margin of the candidate beam; or,

[0072] The seventh threshold corresponding to the signal quality of the candidate beam.

[0073] In a possible implementation of the second aspect, the method further includes:

[0074] The network device receives the second signal from the terminal device;

[0075] The network device switches from the first beam to the candidate beam according to the second signal.

[0076] In a third aspect of the present application, a communication device is provided. The device includes a transceiver unit and a processing unit. The processing unit is configured to obtain first information, which includes the signal quality of a wireless link with a network device and / or the signal quality of a beam with the network device. The transceiver unit is configured to receive second information from the network device, and the second information is related to the power headroom of the network device. The processing unit is further configured to perform beam failure monitoring and recovery, and / or wireless link monitoring and recovery based on the first information and the second information.

[0077] In the third aspect of the present application, the constituent modules of the communication device can also be used to execute the steps performed in each possible implementation manner of the first aspect, and achieve the corresponding technical effects. Specifically, reference can be made to the first aspect for details, which will not be elaborated herein.

[0078] In a fourth aspect of the present application, a communication device is provided. The device includes a transceiver unit. The transceiver unit is configured to send second information to a terminal device, and the second information is related to the power headroom of a second module of a network device.

[0079] In the fourth aspect of the present application, the constituent modules of the communication device can also be used to execute the steps performed in each possible implementation manner of the second aspect, and achieve the corresponding technical effects. Specifically, reference can be made to the second aspect for details, which will not be elaborated herein.

[0080] In a fifth aspect of the present application, a communication device is provided, which includes at least one processor. The at least one processor is coupled to a memory. The memory is configured to store programs or instructions. The at least one processor is configured to execute the programs or instructions so that the device implements the method of any one of the possible implementation manners in any one of the foregoing first aspect to the second aspect.

[0081] In a possible implementation manner, the communication device further includes a memory. Optionally, the processor and the memory are integrated together.

[0082] In a sixth aspect of the present application, a communication device is provided, which includes at least one logic circuit and an input / output interface. The logic circuit is configured to execute the method of any one of the possible implementation manners in any one of the foregoing first aspect to the second aspect.

[0083] In a seventh aspect of the present application, a communication system is provided. The communication system includes the foregoing terminal device and network device.

[0084] In an eighth aspect of the present application, a computer-readable storage medium is provided. The storage medium is configured to store one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes the method of any one of the possible implementation manners in any one of the foregoing first aspect to the second aspect.

[0085] The ninth aspect of the present application provides a computer program product (or computer program). When the computer program in the computer program product is executed by the processor, the processor executes the method of any possible implementation manner in any one of the first aspect to the second aspect above.

[0086] The tenth aspect of the present application provides a chip system. The chip system includes at least one processor, which is used to support a communication device to implement the method of any possible implementation manner in any one of the first aspect to the second aspect above.

[0087] In a possible design, the chip system may further include a memory, which is used to store the necessary program instructions and data of the communication device. The chip system may be composed of chips, or may include chips and other discrete devices. Optionally, the chip system further includes an interface circuit, and the interface circuit provides program instructions and / or data for at least one processor.

[0088] Among them, for the technical effects brought by any one of the design manners in the third aspect to the tenth aspect, reference may be made to the technical effects brought by different design manners in the first aspect to the second aspect above, which will not be elaborated here. Description of the Drawings

[0089] Figures 1a to 1f It is a schematic diagram of the communication system provided by the present application;

[0090] Figure 2a It is a schematic diagram of the coverage area after the transmit power of PDSCH is adjusted;

[0091] Figure 2b It is a schematic diagram of the coverage areas of the main transceiver and the low-power transceiver of the network device;

[0092] Figure 2c It is a schematic diagram for triggering the network device to increase the transmit power;

[0093] Figure 2d It is a schematic diagram of wireless link monitoring;

[0094] Figure 2e It is a schematic diagram of beam failure monitoring and recovery;

[0095] Figure 3 It is a schematic diagram of an implementation of the communication method provided by the embodiment of the present application;

[0096] Figure 4 It is another schematic diagram of wireless link monitoring provided by the embodiment of the present application;

[0097] Figure 5 It is a schematic diagram of beam failure after the transmit power of the network device provided by the embodiment of the present application is adjusted;

[0098] Figures 6 to 10 Schematic diagram of the communication device provided for this application. Specific implementation manners

[0099] First, some terms in the embodiments of this application are explained to facilitate understanding by those skilled in the art.

[0100] (1) Terminal device: It can be a wireless terminal device capable of receiving scheduling and indication information from a network device. A wireless terminal device can be a device that provides voice and / or data connectivity to a user, or a handheld device with wireless connection capabilities, or other processing devices connected to a wireless modem.

[0101] The terminal device can communicate with one or more core networks or the Internet via a radio access network (RAN). The terminal device can be a mobile terminal device, such as a mobile phone (or "cellular" phone, mobile phone), computer, and data card. For example, it can be a portable, pocket-sized, handheld, computer-integrated, or vehicle-mounted mobile device that exchanges voice and / or data with the wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), tablets (Pads), computers with wireless transceiver functions, and other devices. The wireless terminal device can also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile station (MS), remote station, access point (AP), remote terminal device, access terminal device, user terminal device, user agent, subscriber station (SS), customer premises equipment (CPE), terminal, user equipment (UE), mobile terminal (MT), etc.

[0102] By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. A wearable device, also known as a wearable intelligent device or a smart wearable device, etc., is a general term for devices developed by applying wearable technology to the intelligent design of daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. A wearable device is not just a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable intelligent devices include those with complete functions and large sizes that can realize complete or partial functions without relying on a smartphone, such as smart watches or smart glasses, etc., and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones, such as various smart bracelets for physical sign monitoring, smart helmets, and smart jewelry.

[0103] The terminal may also be a drone, a robot, a terminal in device-to-device (D2D) communication, a vehicle-to-everything (V2X) terminal, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, 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, etc.

[0104] In addition, the terminal device may also be a terminal device in a communication system evolved after the fifth-generation (5G) communication system (such as the sixth-generation (6G) communication system, etc.) or a terminal device in a future-evolved public land mobile network (PLMN). Exemplarily, the 6G network can further expand the form and function of 5G communication terminals. 6G terminals include, but are not limited to, vehicles, cellular network terminals (integrating satellite terminal functions), drones, and Internet of Things (IoT) devices.

[0105] In the embodiments of the present application, the above terminal device may also obtain AI services provided by a network device. Optionally, the terminal device may also have AI processing capabilities.

[0106] (2) Network device: It can be a device in a wireless network. For example, the network device can be a RAN node (or device) that connects a terminal device to a wireless network, and can also be called a base station. Currently, some examples of RAN devices are: base station, evolved NodeB (eNodeB), gNB (gNodeB) in a 5G communication system, transmission reception point (TRP), evolved Node B (eNB), radio network controller (RNC), Node B (NB), home base station (e.g., home evolved Node B, or home Node B, HNB), base band unit (BBU), base station, transmission reception point in a 6G communication system or a next-generation wireless communication system, or wireless fidelity (Wi-Fi) access point AP, etc. Additionally, in a network structure, the network device can include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node.

[0107] Optionally, the RAN node can also be a macro base station, a micro base station or an indoor station, a relay node or a donor node, or a radio controller in a cloud radio access network (CRAN) scenario. The RAN node can also be a server, a wearable device, a vehicle or an in-vehicle device, etc. For example, the access network device in vehicle to everything (V2X) technology can be a road side unit (RSU).

[0108] In another possible scenario, multiple RAN nodes cooperate to assist a terminal in achieving wireless access, and different RAN nodes respectively implement partial functions of a base station. For example, the RAN nodes can be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and the DU can be set separately, or can also be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as included in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0109] In different systems, the CU (or CU-CP and CU-UP), DU, or RU can also have different names, but those skilled in the art can understand their meanings. For example, in an open RAN (O-RAN or ORAN) system, the CU can also be called an O-CU (open CU), the DU can also be called an O-DU, the CU-CP can also be called an O-CU-CP, the CU-UP can also be called an O-CU-UP, and the RU can also be called an O-RU. For ease of description, in this application, the CU, CU-CP, CU-UP, DU, and RU are used as examples for description. Any one of the CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0110] The communication between the access network device and the terminal device follows a certain protocol layer structure. The protocol layer may include a control plane protocol layer and a user plane protocol layer. The control plane protocol layer may include at least one of the following: radio resource control (RRC) layer, packet data convergence protocol (PDCP) layer, radio link control (RLC) layer, media access control (MAC) layer, or physical (PHY) layer, etc. The user plane protocol layer may include at least one of the following: service data adaptation protocol (SDAP) layer, PDCP layer, RLC layer, MAC layer, or physical layer, etc.

[0111] For the correspondence between the network elements in the ORAN system and the protocol layer functions they can implement, refer to Table 1 below.

[0112] Table 1

[0113] ORAN network element Protocol layer functions of 3GPP O-CU-CP RRC+PCDP - Control Plane (PDCP-C) O-CU-UP SDAP+PCDP - User Plane (PDCP-U) O-DU RLC+MAC+PHY-high O-RU PHY-low

[0114] The network device may be other devices that provide wireless communication functions for the terminal device. The specific technologies and specific device forms adopted by the network device are not limited in the embodiments of the present application. For ease of description, the embodiments of the present application do not limit.

[0115] The network device may further include a core network device, such as a mobility management entity (MME), a home subscriber server (HSS), a serving gateway (S-GW), a policy and charging rules function (PCRF), and a public data network gateway (PDN gateway, P-GW) in a 4th generation (4G) network; network elements such as an access and mobility management function (AMF), a user plane function (UPF), or a session management function (SMF) in a 5G network. In addition, the core network device may further include other core network devices in a 6G network and the next-generation network of the 6G network.

[0116] In the embodiments of the present application, the above-mentioned network device may also be a network node with AI capabilities, which can provide AI services for terminals or other network devices. For example, it can be an AI node, a computing power node, a RAN node with AI capabilities, or a core network element with AI capabilities of a network device (access network or core network).

[0117] In the embodiments of the present application, the device for implementing the functions of the network device may be the network device itself, or a device capable of supporting the network device to implement such functions, such as a chip system. This device may be installed in the network device. In the technical solutions provided in the embodiments of the present application, the device for implementing the functions of the network device is taken as an example of the network device to describe the technical solutions provided in the embodiments of the present application.

[0118] (3) Beam

[0119] A beam is a communication resource, which refers to a special directional transmission or reception effect formed by the transmitter or receiver of a network device or a terminal device through an antenna array, similar to the beam of light converged in one direction by a flashlight. By sending and receiving signals in the form of a beam, the transmission distance of the signal can be effectively increased.

[0120] A beam can be divided into a transmit beam and a receive beam. The technology for forming a beam can be beamforming technology or other technical means. Beamforming includes transmit beamforming and receive beamforming. The beamforming technology can specifically be digital beamforming technology, analog beamforming technology, or hybrid digital / analog beamforming technology, etc.

[0121] Among them, the transmit beam: The transmitting device sends a signal with certain beamforming weights, so that the transmitted signal forms a spatially directed beam. Among them, in the uplink direction, the transmitting device can be a terminal device; in the downlink direction, the transmitting device can be a network device.

[0122] The receive beam: The receiving device receives a signal with certain beamforming weights, so that the received signal forms a spatially directed beam. Among them, in the uplink direction, the receiving device can be a network device; in the downlink direction, the receiving device can be a terminal device.

[0123] A beam can be a wide beam, or a narrow beam, or other types of beams.

[0124] Beams generally correspond to resources. For example, when performing beam measurement, the network device measures different beams through different resources, and the terminal device feeds back the measured resource quality, so that the network device can know the quality of the corresponding beam. During data transmission, the beam can also be indicated by its corresponding resource. For example, the network device indicates a transmission configuration indication - state through the transmission configuration index (TCI) field in the downlink control information (DCI). The terminal device determines the beam corresponding to the reference resource according to the reference resource included in the TCI - state. Different beams can be regarded as different resources, and the same information or different information can be sent using (or through) different beams.

[0125] A beam pair is based on the concept of a beam. A beam pair usually includes a transmit beam of the transmitting device and a receive beam of the receiving device. It should be noted that if not otherwise specified, the transmit beam in the following text refers to the transmit beam of the network device, and the receive beam refers to the receive beam of the terminal.

[0126] In a communication system, such as a 5G New Radio (NR) system, both network devices and terminal devices can generate one or more transmit beams and one or more receive beams. Before transmitting data, the network device and the terminal device need to perform beam alignment. In the communication protocol, a beam can be specifically characterized as a digital beam, an analog beam, a spatial domain filter, a spatial filter, a spatial parameter, a TCI, a TCI state, etc. A beam used for transmitting a signal can be called a transmission beam (Tx beam), a spatial domain transmission filter, a spatial transmission filter, a spatial domain transmission parameter, a spatial transmission parameter, etc. A beam used for receiving a signal can be called a reception beam (Rx beam), a spatial domain reception filter, a spatial reception filter, a spatial domain reception parameter, a spatial reception parameter, etc. It can be understood that in the embodiments of the present application, the beam is uniformly used for description, but the beam can be alternatively understood as other equivalent concepts and is not limited to the concepts mentioned above.

[0127] (4) Resource

[0128] In the communication protocol, reference signals are configured in the form of resources. The network device will configure each reference signal to the terminal device in the form of a resource. A resource is a configuration information unit, usually including parameters related to a reference signal, such as the time-frequency resource location of the reference signal, the number of ports, the time domain type (periodic / semi-static / aperiodic), etc.

[0129] A resource can be an uplink signal resource or a downlink signal resource.

[0130] The uplink signals include, but are not limited to, sounding reference signal (SRS) and demodulation reference signal (DMRS).

[0131] The downlink signals include, but are not limited to, channel state information reference signal (CSI-RS), cell specific reference signal (CRS), demodulation reference signal (DMRS), and synchronization signal / physical broadcast channel block (SS / PBCH block). Among them, SS / PBCH block can be abbreviated as synchronization signal block (SSB).

[0132] Resources can be configured through RRC messages. In terms of the configuration structure, a resource is a data structure that includes relevant parameters of its corresponding uplink / downlink signals. For example, the type of uplink / downlink signals, the resource granularity carrying the uplink / downlink signals, the transmission time and period of the uplink / downlink signals, the number of ports used to transmit the uplink / downlink signals, etc. Each resource of the uplink / downlink signals has a unique identifier to identify the resource of the downlink signal.

[0133] (5) Chirp signal

[0134] A chirp signal refers to a signal whose carrier frequency linearly increases during the pulse duration when encoding a pulse. That is to say, a signal whose frequency increases or decreases with time.

[0135] (6) Configuration and pre-configuration: In this application, both configuration and pre-configuration are used. Among them, configuration means that the network device / server sends the configuration information or value of some parameters to the terminal through messages or signaling, so that the terminal can determine the communication parameters or resources during transmission according to these values or information. Pre-configuration is similar to configuration, and can be parameter information or parameter values pre-negotiated between the network device / server and the terminal device, or parameter information or parameter values specified by the standard protocol for the base station / network device or terminal device, or parameter information or parameter values pre-stored in the base station / server or terminal device. This application does not make any limitations on this.

[0136] Further, these values and parameters can be changed or updated.

[0137] (7) The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "Plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after. "At least one (item)" or its similar expression refers to any combination of these items, including any combination of single item (item) or plural items (items). For example, "at least one of A, B, and C" includes A, B, C, AB, AC, BC, or ABC. Also, unless otherwise specified, the ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects and are not used to limit the order, time sequence, priority, or importance of multiple objects.

[0138] (8) "Sending" and "receiving" in the embodiments of the present application represent the direction of signal transmission. For example, "sending information to XX" can be understood as the destination of the information being XX, which can include directly sending through the air interface or indirectly sending by other units or modules through the air interface. "Receiving information from YY" can be understood as the source of the information being YY, which can include directly receiving from YY through the air interface or indirectly receiving from YY through the air interface by other units or modules. "Sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface.

[0139] In other words, sending and receiving can be carried out between devices, for example, between a network device and a terminal device, or can be carried out within a device, for example, sending or receiving between components, modules, chips, software modules, or hardware modules within a device through a bus, trace, or interface.

[0140] It can be understood that necessary processing may be performed on the information between the source end and the destination end of the information sending, such as encoding, modulation, etc., but the destination end can understand the valid information from the source end. Similar expressions in the present application can be understood similarly and will not be elaborated further.

[0141] (9) In the embodiments of the present application, "indication" may include direct indication and indirect indication, and may also include explicit indication and implicit indication. If the information indicated by a certain piece of information (such as the indication information described below) is called the information to be indicated, then in the specific implementation process, there are many ways to indicate the information to be indicated. For example, but not limited to, the information to be indicated can be directly indicated, such as the information to be indicated itself or the index of the information to be indicated, etc. The information to be indicated can also be indirectly indicated by indicating other information, where there is an association relationship between the other information and the information to be indicated; it is also possible to only indicate a part of the information to be indicated, while the other parts of the information to be indicated are known or pre-agreed. For example, the arrangement order of each piece of information pre-agreed (such as protocol pre-definition) can be used to indicate specific information, thereby reducing the indication overhead to a certain extent. The present application does not limit the specific manner of indication. It can be understood that for the sender of the indication information, the indication information can be used to indicate the information to be indicated, and for the receiver of the indication information, the indication information can be used to determine the information to be indicated.

[0142] In the present application, unless otherwise specified, the same or similar parts between various embodiments can be referred to each other. In various embodiments of the present application, as well as in each method / design / implementation manner in each embodiment, if there is no special specification and logical conflict, the terms and / or descriptions between different embodiments, as well as between each method / design / implementation manner in each embodiment, are consistent and can be cross-referenced. The technical features in different embodiments, as well as in each method / design / implementation manner in each embodiment, can be combined to form new embodiments, methods, or implementation manners according to their internal logical relationships. The embodiments of the present application described below do not constitute a limitation on the protection scope of the present application.

[0143] The present application can be applied to a long term evolution (LTE) system, an NR system, or a communication system evolved after 5G (such as Beyond 5G (B5G), 5.5G, 6G, etc.). Among them, the communication system includes at least one network device and / or at least one terminal device.

[0144] Please refer to Figure 1a , which is a schematic diagram of the architecture of the communication system 1000 to which the embodiments of the present application are applied. As Figure 1a shown, the communication system includes a radio access network (RAN) 100 and a core network 200. Optionally, the communication system 1000 may also include the Internet 300. Among them, RAN 100 includes at least one RAN node (such as Figure 1a 110a and 110b inFigure 1a (120a - 120j in it, collectively referred to as 120). RAN 100 may also include other RAN nodes, for example, wireless relay devices and / or wireless backhaul devices ( Figure 1a not shown in the figure). The terminal 120 is connected to the RAN node 110 wirelessly, and the RAN node 110 is connected to the core network 200 wirelessly or wired. The core network devices in the core network 200 and the RAN nodes 110 in the RAN 100 may be independent different physical devices, or may be the same physical device integrating the logical functions of the core network devices and the logical functions of the RAN nodes. Terminals can be connected to each other and RAN nodes can be connected to each other in a wired or wireless manner.

[0145] RAN 100 may be an evolved universal terrestrial radio access (E-UTRA) system, an NR system, a 6G system, and future wireless access systems defined in the 3rd generation partnership project (3GPP). RAN 100 may also include two or more different wireless access systems as described above. RAN 100 may also be an open RAN (O-RAN).

[0146] For ease of description, in the following text, a base station is taken as an example of a RAN node for description.

[0147] The base station and the terminal can be in fixed positions or movable. The base station and the terminal can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on airplanes, balloons, and artificial satellites. The embodiments of the present application do not limit the application scenarios of the base station and the terminal.

[0148] The roles of the base station and the terminal can be relative. For example, Figure 1a the helicopter or drone 120i in the figure can be configured as a mobile base station. For those terminals 120j accessing the wireless access network 100 through 120i, the terminal 120i is the base station; but for the base station 110a, 120i is the terminal, that is, the communication between 110a and 120i is through the wireless air interface protocol. Of course, the communication between 110a and 120i can also be through the interface protocol between base stations. In this case, relative to 110a, 120i is also the base station. Therefore, the base station and the terminal can both be collectively referred to as communication devices. Figure 1a 110a and 110b in the figure can be called communication devices with base station functions. Figure 1aAmong them, 120a - 120j can be referred to as communication devices with terminal functions.

[0149] Communication can be carried out between the base station and the terminal, between the base station and the base station, and between the terminal and the terminal through licensed spectrum, or through unlicensed spectrum, or simultaneously through licensed spectrum and unlicensed spectrum; communication can be carried out through spectrum below 6 gigahertz (GHz), or through spectrum above 6 GHz, or simultaneously use spectrum below 6 GHz and spectrum above 6 GHz. Embodiments of this application do not limit the spectrum resources used for wireless communication.

[0150] In the embodiments of this application, the functions of the base station can also be executed by modules (such as chips) in the base station, or by a control subsystem containing base station functions. Here, the control subsystem containing base station functions can be a control center in the above application scenarios such as smart grid, industrial control, intelligent transportation, and smart city. The functions of the terminal can also be executed by modules (such as chips or modems) in the terminal, or by a device containing terminal functions.

[0151] Figure 1b Another schematic diagram of a communication system provided for the embodiments of this application. In Figure 1b this, taking the network device as the base station as an example for illustration, both device 1 and device 2 are terminal devices. As Figure 1b shown, the communication link between device 1 and device 2 can be referred to as a sidelink (SL), and the communication link between device 1 (or device 2) and the base station can be referred to as an uplink and downlink link, including an uplink link and a downlink link; it can be seen that the sidelink is a communication mechanism in which different terminal devices communicate directly without passing through a network device.

[0152] Optionally, in the sidelink (SL), generally speaking, the transmitting device and the receiving device can be terminal devices or network devices of the same type, or a roadside unit (RSU) and a terminal device. Among them, from a physical entity perspective, the RSU is a roadside station or a roadside unit, and from a functional perspective, the RSU can be a terminal device or a network device, and this application does not limit this. That is, the transmitting device is a terminal device and the receiving device is also a terminal device; or, the transmitting device is a roadside station and the receiving device is also a roadside station; or, the transmitting device is a terminal device and the receiving device is also a roadside station. In addition, the sidelink can also be base station devices of the same type or different types. At this time, the function of the sidelink is similar to that of a relay link, but the air interface technology used can be the same or different.

[0153] Exemplarily, broadcast, unicast, and multicast are supported on the sidelink.

[0154] Broadcast communication is similar to a network device broadcasting system information, that is, the terminal device sends broadcast service data without encryption. Any other terminal device within the effective reception range can receive the data of the broadcast service if it is interested in the broadcast service.

[0155] Unicast communication is similar to the data communication after establishing an RRC connection between a terminal device and a network device. A unicast connection needs to be established between two terminal devices first. After establishing the unicast connection, the two terminal devices can perform data communication based on the negotiated identifier. The data can be encrypted or unencrypted. Compared with broadcast, in unicast communication, only the two terminal devices that have established the unicast connection can perform the unicast communication.

[0156] Optionally, a unicast communication on the sidelink corresponds to a pair of source layer-2 identifiers (source layer-2 identifier, denoted as source L2 ID) and destination layer-2 identifiers (destination Layer-2 Identifier, denoted as destination L2 ID). Optionally, the source L2 ID and the destination L2 ID will be included in the sub-header of the media access control protocol data unit (MAC PDU) in the sidelink, so that the data can be transmitted to the correct receiver.

[0157] Multicast communication refers to the communication between all terminal devices within a communication group. Any terminal device within the group can send and receive the data of the multicast service.

[0158] As Figure 1c shown, when a terminal device (denoted as UE1) communicates directly with another terminal device (denoted as UE2) without passing through a network device, the communication link between the two terminal devices can be called a sidelink, or the two terminal devices communicate based on the proximity-based services communication 5 (PC5) interface.

[0159] As Figure 1dAs shown, V2X communication technology, as a typical application of sidelink, utilizes and enhances current cellular network functions and elements to achieve low-latency and high-reliability communication among various nodes in a vehicle network, including vehicle-to-vehicle communication (abbreviated as V2V), vehicle-to-pedestrian communication (abbreviated as V2P), vehicle-to-infrastructure communication (abbreviated as V2I), and vehicle-to-network communication (abbreviated as V2N). With the evolution of cellular systems from 4G Long Term Evolution (abbreviated as LTE) to 5G, C-V2X evolves from LTE-V2X to NR-V2X (New Radio V2X, abbreviated as NR-V2X).

[0160] In addition, V2X communication has great potential in reducing vehicle collision accidents, and thus can also reduce the corresponding number of casualties. The advantages of V2X are not limited to improving safety. Vehicles capable of V2X communication contribute to better traffic management, further promoting green transportation and lower energy consumption. The Intelligent Transportation System (abbreviated as ITS) is an application that combines with V2X. Based on V2X technology, Vehicle User Equipment (abbreviated as V-UE) can send some of its own information, such as location, speed, intention (turning, lane changing, reversing), etc. periodically and information triggered by some non-periodic events to surrounding V-UEs. Similarly, V-UEs will also receive information from surrounding users in real time. 5G NR V2X can support lower transmission latency, more reliable communication transmission, higher throughput, better user experience, and meet the requirements of a wider range of application scenarios. Further, the vehicle-to-vehicle communication technology supported by V2X can be extended to device-to-device (abbreviated as D2D) communication under any system.

[0161] As Figure 1e As shown, the application scenario of the embodiment of this application can be the SA scenario. The terminal device can be connected to a single base station. Among them, the base station to which the terminal device is connected and the core network to which the base station is connected are of the same standard. For example, if the core network is 5G Core, then the corresponding base station is a 5G base station, and the 5G base station is connected to 5G Core; for another example, if the core network is 6G Core, then the corresponding base station is a 6G base station, and the 6G base station is connected to 6G Core. It should be noted that the number of terminal devices can be one or more.

[0162] As Figure 1fAs shown in the figure, the application scenario of the embodiment of the present application can be a DC scenario, and the terminal device can be connected to base stations of different or the same systems simultaneously. For example, when the core network is 5G Core, the terminal device can be connected to a 5G base station and a 6G base station simultaneously, where the 5G base station serves as the primary station and the 6G base station serves as the secondary station; for another example, when the core network is 6G Core, the terminal device can be connected to a 5G base station and a 6G base station simultaneously, where the 6G base station serves as the primary station and the 5G base station serves as the secondary station; for yet another example, the core network can be 6G Core, and the terminal device can be connected to two 6G base stations simultaneously, with both the primary station and the secondary station being 6G base stations. It should be noted that the number of terminal devices can be one or more.

[0163] In a wireless communication system, the communication between the terminal device and the network device follows a certain protocol layer structure. For example, the protocol layer structure can include the RRC layer, the packet data convergence protocol (PDCP) layer, the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer, etc. Among them, in the 3rd generation partnership project (3GPP) standard, layer 1 (L1) can refer to the PHY layer, layer 2 can refer to the MAC layer, and layer 3 can refer to the RRC layer.

[0164] The technical solution provided by the present application can be applied to a wireless communication system (such as Figure 1a , Figure 1b , Figure 1c , Figure 1d , Figure 1e or Figure 1f the system shown in the figure), and the applicable scenarios include terrestrial cellular communication, non-terrestrial communication NTN, satellite communication, high altitude platform station (HAPS) communication, V2X, integrated access and backhaul (IAB), reconfigurable intelligent surface (RIS) communication, etc.

[0165] In a wireless communication system, as the network scale continues to expand, the network energy consumption also continues to increase. To reduce the network energy consumption, one approach is to enable the adaptive adjustment of the power deviation between the physical downlink shared channel (PDSCH) and the channel state information reference signal (CSI-RS). The network device can broadcast the transmission power of the SSB through the system message to indicate the transmission power of the secondary synchronization signal (SSS). In addition, the network device can also configure the power deviation between the non-zero power-channel state information reference signal (NZP CSI-RS) and the SSB through the RRC signaling to determine the transmission power of the NZP CSI-RS. In addition, the network device will also configure the power deviation between the PDSCH and the NZP CSI-RS.

[0166] To better achieve the effective adjustment of the power deviation between the PDSCH and the CSI-RS, the protocol has made corresponding enhancements to CSI measurement and feedback. The main idea is to measure and report based on different power deviation values to assist the network device in determining the optimal power deviation between the PDSCH and the CSI-RS and notify the terminal device accordingly.

[0167] As Figure 2a shown, based on the above enhancements, the transmission power of the PDSCH can achieve more effective semi-static adjustment. Or rather, the transmission power of the PDSCH can be less than the maximum transmission power, and the network device's energy consumption can be reduced by lowering the transmission power. However, the above enhancements only adjust the transmission power of the PDSCH and do not adjust the transmission power of the common signals, such as the SSB, system information block 1 (SIB1), other system information (OSI), paging messages, etc. The transmission power of the common signals is still sent through the SIB1, and whether to adjust it is left to the network device to implement. When the network device decides to adjust, it will update the SIB1 message accordingly. However, in the actual existing network, after the network is planned, to avoid coverage holes, the transmission power of the common signals will not be adjusted.

[0168] Based on the above problems, in order to reduce the power consumption of network devices, a first module and a second module are deployed on the network devices. Among them, at least one of the power consumption, hardware composition, and waveform of the transmitted signal of the first module and the second module is different, and the power consumption of the first module is less than that of the second module. The first module is, for example, a low power radio (LR), and the low power radio is based on a chirp signal, or an On-off key (OOK) signal, or a passive reflection signal. The second module is, for example, a main radio (MR), and the main radio is based on orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread orthogonal frequency division multiplexing signal (DFT-S-OFDM). As Figure 2b shown, the low power radio ensures coverage, and the transmit power of the main radio is dynamically adjusted according to user requests. Based on this, when there are only near-end users or even when the network is idle, the main radio can transmit signals with a lower transmit power. For users not covered by the main radio, they can send auxiliary information to trigger the base station to increase the transmit power or the number of repetitions.

[0169] In a scenario where a low power radio and a main radio are simultaneously deployed on a network device, since the signals transmitted by the two have different waveforms and transmit powers, and the transmit power of the main radio is dynamically adjustable. In this architecture, if the network device does not transmit signals at full power, directly monitoring the beam and / or the wireless link based on the measurement results of the signal may increase unnecessary connection reconstruction or recovery processes and increase network power consumption. When the terminal device detects that the signal quality is poor, it is necessary to consider whether there is still power margin in the network device at the same time. If the network device has power margin, theoretically, as Figure 2c shown, when the terminal device is outside the coverage of the main radio or the signal quality is poor, the wireless link can also recover the link or beam by triggering the network device to increase the transmit power.

[0170] To solve the above problems, an embodiment of the present application provides a communication method. Before introducing the specific implementation manners of the method provided by the embodiment of the present application, the processes of wireless link monitoring and beam failure monitoring and recovery are first introduced.

[0171] Radio Link Monitoring (RLM) refers to the continuous tracking of the quality of the radio link by the terminal device in the connected state. For a serving cell, the network configures a set of reference signal resources for the terminal device for RLM, called radio link monitoring reference signal (RLM-RS). The RLM-RS may be a set of SS / PBCH blocks or a set of CSI-RS, or a combination of a set of SSBs and CSI-RS, depending on the high-layer configuration.

[0172] The terminal device uses the RLM-RS to estimate the block error rate (BLER) of the physical downlink control channel (PDCCH) of the serving cell. As Figure 2d shown, if the BLER estimated by the terminal device for each RLM-RS within a preset time length T is greater than or equal to the preset threshold Qout (i.e., the results of all measurement resources within the evaluation period are less than the threshold), the physical layer (PHY) of the terminal device will send an out-of-sync indication to the high layer (RRC layer). Subsequently, the high layer continues to monitor. When N310 out-of-sync indications are continuously received, the timer T310 is triggered to start. During the duration of T310, if there is one result among the BLER results estimated by the physical layer of the terminal device for each RLM-RS within another preset time length T after the timer starts that is greater than or equal to another preset threshold Qin (i.e., the result of any measurement resource within the evaluation period is greater than or equal to the threshold), it indicates that the radio link quality has been improved. The physical layer of the terminal device sends an in-sync indication to the high layer. If N311 in-sync indications are continuously received, the timer T310 is stopped, indicating that the link has been restored. Otherwise, if T310 times out, the radio link is considered to have failed, triggering the RRC connection reconstruction process.

[0173] When the user is indoors or moving, the radio link between the terminal device and the network device is vulnerable to the blocking and degradation of radio frequency signals, which may cause the communication link to be interrupted, resulting in Beam Failure. To detect beam failure faster, the terminal device can adopt the following process to measure the changes in the communication link and recover from them simultaneously to continue the service. The process of beam failure monitoring and recovery is as Figure 2e shown and mainly divided into four stages:

[0174] Beam Failure Detection:

[0175] The terminal device measures beam failure detection reference signals, such as SSB or CSI-RS, etc., at the physical layer, and determines whether a beam failure event occurs based on the measurement results. The terminal device measures beam failure detection reference signals at the physical layer and determines whether a beam failure event occurs based on the measurement results. The judgment condition is: if the metrics of all serving beams, such as the block error rate of PDCCH, meet or exceed the preset threshold Qout,LR (i.e., the measurement result is lower than the threshold), then it is determined as a beam failure instance, and the physical layer of the terminal device reports a beam failure indication to the MAC layer of the terminal device. This reporting process is periodic. The MAC layer uses a counter to count the indications reported by the physical layer. When the number of consecutive beam failure indications received by the MAC layer exceeds the maximum value (beam failure instance max count), the MAC layer determines that a beam failure has occurred. New candidate beam identification:

[0176] The physical layer of the terminal device measures beam identification reference signals to find new candidate beams. When the physical layer of the terminal device receives a request or indication or notification from the upper layer (MAC layer) of the terminal device, it reports the measurement results of the beam identification reference signals that meet the preset conditions (for example, the measurement results of the beam identification reference signals exceeding the threshold of the preset layer 1 reference signal received power (L1-RSRP)) to the upper layer. The upper layer of the terminal device selects candidate beams based on the reports from the physical layer.

[0177] Beam recovery request:

[0178] The higher layer (MAC layer) of the terminal device determines the physical random access channel (PRACH) resources / sequences according to the selected candidate beam. If the terminal device determines that the trigger condition for the beam failure recovery request (BFRQ) is met, the terminal device sends the above BFRQ to the network device on the contention-free PRACH. The terminal needs to send the BFRQ according to the number of times of sending the BFRQ and / or the timer configured by the network.

[0179] Beam recovery response:

[0180] The terminal device starts to monitor the beam failure recovery response (BFRP) of the network device on the PDCCH 4 slots after sending the PRACH. If a successful response from the network device is not received before the timer of the beam failure recovery timer, a beam recovery failure indication is reported to the MAC layer.

[0181] Please refer to Figure 3 , Figure 3 which is a schematic diagram of an implementation of the communication method provided by the embodiment of the present application. The method includes the following steps.

[0182] It should be noted that in Figure 3 , taking the terminal device and the network device as the execution subjects of this interaction schematic as an example to illustrate the method, but the present application does not limit the execution subjects of this interaction schematic. For example, in Figure 3 , the execution subject of the method can be replaced by a chip, a chip system, a processor, a logic module or software in the terminal device or the network device.

[0183] S301. The terminal device obtains first information, where the first information includes the signal quality of the wireless link between the terminal device and the network device, and / or the signal quality of the beam between the terminal device and the network device.

[0184] In one implementation, the signal quality of the wireless link between the terminal device and the network device and / or the signal quality of the beam can be obtained based on the reference signal.

[0185] The network device configures each reference signal to the terminal device in the form of resources. A resource is a configuration information unit, which usually includes parameters related to a reference signal, such as the time-frequency resource location of the reference signal, the number of ports, the time-domain type (periodic / semi-static / aperiodic), etc. The terminal device measures the current serving cell according to the configuration information. When it is necessary to measure neighboring cells, the terminal device also measures the neighboring cells according to the measurement configuration. The measurement report is obtained based on the measurement results of reference signals (such as SS / PBCH block, CSI-RS, etc.).

[0186] For example, when the terminal device and the network device communicate through the downlink, the reference signal may include CSI-RS, SSS, primary synchronization signal (PSS), cell specific reference signal (CRS), demodulation reference signal (DMRS), and synchronization signal / physical broadcast channel block (SS / PBCH block), etc. Among them, SS / PBCH block can be abbreviated as SSB.

[0187] Another example is that when the terminal device and the network device communicate through the sidelink, the reference signal may include sidelink synchronization signal / physical broadcast channel block (sidelink SSB, SL-SSB, or S-SS / PSBCH block), sidelink channel state information reference signal (SL-CSI-RS), etc.

[0188] In this embodiment, the first information can be understood as the measurement result of the downlink reference signal, or as the signal quality of the wireless link between the terminal device and the network device and / or the signal quality of the beam.

[0189] In this embodiment, the network device includes a first module and a second module for receiving and transmitting information. At least one of the first module and the second module is different in terms of power consumption, hardware composition, and waveform of the transmitted signal, and the power consumption of the first module is less than that of the second module. Correspondingly, the terminal device also includes a first module and a second module for receiving and transmitting information. At least one of the first module and the second module is different in terms of power consumption, hardware composition, and waveform of the transmitted signal, and the power consumption of the first module is less than that of the second module.

[0190] Optionally, the first module is a low power radio (LR). The low power radio receives and transmits a first type of signal, Type1. The first type of signal is a chirp signal, or an on-off key (OOK) signal, or a passive reflection signal.

[0191] Optionally, the second module is a main radio (MR). The main radio receives and transmits a second type of signal, Type2. The second type of signal is an orthogonal frequency division multiplexing (OFDM) or a discrete fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) signal.

[0192] Since the waveforms and transmission powers of the first type of signal and the second type of signal are different, the coverage ranges of the first type of signal and the second type of signal may be different. The first type of signal is used to ensure cell coverage, that is, for terminal devices within the cell coverage, whether they are in the idle state, inactive state, or connected state, they can receive the first type of signal. The second type of signal provides services for users with data transmission requirements and needs to consider the state of the terminal device, that is, only consider terminal devices in the connected state, or inactive state terminal devices that support small packet data transmission. It should be understood that the transmission power adjusted by the network device only ensures the coverage of such users.

[0193] Under this architecture, the low power radio of the network device is used to ensure coverage, so its transmission power is relatively fixed. The main radio of the network device is used to provide services for users, so its transmission power can be dynamically adjusted, such as flexibly adjusted based on the location of the terminal device, channel quality, data volume, etc.

[0194] Under this architecture, for a connected terminal device, the network device mainly transmits and receives signals through the primary transceiver. Therefore, the signal for radio link monitoring (RLM-RS) is measured based on the signal of the primary transceiver, such as measuring based on the reference signal transmitted by the primary transceiver of the network device.

[0195] It should be understood that in one example, within an evaluation period, the terminal device measures based on the configured measurement signal and estimates the block error rate of the PDCCH of the serving cell. Based on the estimation result, the physical layer sends an out-of-sync or in-sync indication to the MAC layer. Since the primary transceiver on the network side may not be transmitting at full power, that is, there may be a corresponding power margin, therefore, when performing radio link monitoring, such as synchronization / out-of-sync determination, the power margin situation of the network device also needs to be considered accordingly. For this, the terminal device receives the second information from the network device. For details, please refer to the content of S302.

[0196] It should be understood that the execution order of S301 and S302 is not limited.

[0197] S302. The terminal device receives the second information from the network device, and the second information is related to the power margin of the network device.

[0198] Optionally, the second information indicates the range of the power margin and / or whether there is a power margin.

[0199] Optionally, the network device includes a first module and a second module for transmitting and receiving information. At least one of the first module and the second module is different in power consumption, hardware composition, and the waveform of the transmitted signal, and the power consumption of the first module is less than that of the second module. The second information is related to the power margin of the second module of the network device.

[0200] The power margin is divided into the power margin of the network device and the power margin of the beam, and the two can be the same or different.

[0201] In one implementation, the terminal device can receive or update the second information based on one or more of the following methods.

[0202] Method 1: Receive based on SSB.

[0203] Optionally, SSB can be replaced by SSS, CSI-RS, master information block (MIB).

[0204] Method 2: Receive based on SIB.

[0205] The network device sends the SIB to the terminal device, and the SIB carries the second information, and broadcasts the second information through the SIB.

[0206] Method 3: Based on DCI reception.

[0207] The network device sends DCI to the terminal device, and the DCI carries the second information.

[0208] Optionally, the DCI can be replaced by a media access control control element (MAC CE).

[0209] Method 4: Update based on the indication of a paging short message.

[0210] When the power headroom of the network device changes, the network device can update the second information through a paging message, which is carried by a short message scrambled with a paging radio network temporary identifier (P-RNTI).

[0211] Optionally, the upper layer (MAC layer) of the terminal device can determine whether there is a power headroom or the range of the power headroom of the network device based on the out-of-sync indication reported by the physical layer and the indication of the existence of the power headroom.

[0212] S303. The terminal device performs beam failure monitoring and recovery, and / or wireless link monitoring and recovery according to the first information and the second information.

[0213] After the terminal device obtains the first information and the second information, the terminal device can perform beam failure monitoring and recovery, and / or wireless link monitoring and recovery according to the first information and the second information.

[0214] It should be understood that for wireless link failure and beam failure, in a single-beam scenario, beam failure is equivalent to wireless link failure. In a multi-beam scenario, when the wireless problem within the cell cannot be solved through the recovery process, or the terminal device cannot find a suitable beam, and the connection failure between the terminal device and the network device cannot be successfully recovered through the random access process of the beam, it is determined that there is a wireless link failure between the network device and the terminal device. When the terminal device loses the link of one beam but can switch to another beam and can successfully perform random access, only beam failure occurs in this scenario.

[0215] The processes of wireless link monitoring and recovery and beam failure monitoring and recovery are introduced below respectively.

[0216] I. Wireless link monitoring and recovery

[0217] In one implementation, the terminal device determines whether to send an out-of-sync indication based on the first information and the second information.

[0218] In this implementation manner, the first information includes the signal quality of the radio link between the terminal device and the network device, and the second information includes whether the network device has power headroom and / or the range of the power headroom.

[0219] Optionally, the conditions for the terminal device to send an out-of-sync indication include one or more of the following information A to information B.

[0220] Information A. The signal quality of the radio link between the terminal device and the network device is less than a first threshold.

[0221] Information B. The signal quality of the radio link between the terminal device and the network device is less than a first threshold, and the network device has power headroom.

[0222] For information A and information B, in the radio link monitoring process, if the BLER estimated by the terminal device for each RLM-RS within a preset time length T is greater than or equal to a preset threshold Qout (that is, the results of all measurement resources within the evaluation period are less than the threshold). The signal quality of the radio link between the terminal device and the network device can be understood as the results of all measurement resources within the evaluation period. Correspondingly, the first threshold here can be understood as the threshold of the signal quality in the radio link monitoring process. When the signal quality of the radio link is less than the first threshold, it indicates that the signal quality of this radio link is poor, and at this time, the physical layer of the terminal device will trigger to send an out-of-sync indication to the RRC layer.

[0223] It should be understood that the block error rate of the PDCCH is only one of the indicators of the beam compared with the preset threshold Qout,LR. In actual application, other indicators can also be selected for comparison according to actual requirements. For information B, in addition to judging the signal quality of the radio link between the terminal device and the network device, the terminal device also considers whether the network device has power headroom, and sends an out-of-sync indication only when the network device does not have power headroom.

[0224] If the terminal device determines that the conditions for sending the out-of-sync indication are met, the physical layer of the terminal device sends an out-of-sync indication to the upper layer.

[0225] Optionally, the terminal device sends an out-of-sync indication and a power headroom exist (PH exist) indication to the upper layer, where PH exist is used to indicate that the network device has power headroom.

[0226] In another implementation manner, the terminal device determines whether to send an out-of-sync indication based on the first information.

[0227] If the terminal device determines that the signal quality of the wireless link between the terminal device and the network device is less than the first threshold, the physical layer of the terminal device will report an out-of-sync indication to the upper layer, without considering the power margin of the network device.

[0228] After the physical layer of the terminal device sends an out-of-sync indication to the upper layer, in one implementation, when the first condition is met, the terminal device sends a first signal to the network device, and the first signal is used to trigger the network device to adjust the transmission power.

[0229] In this implementation, during the wireless link monitoring and recovery process, the terminal device will send a first signal to the network device when the first condition is met to trigger the network device to adjust the transmission power. If the first condition is not met, the terminal device will perform reconstruction.

[0230] Optionally, the first signal is an uplink wake up signal (UL WUS).

[0231] If the terminal device detects that it has sent an out-of-sync indication to the upper layer and the network device has a power margin, it may trigger the terminal device to send a first signal to the network device to request the network device to adjust the transmission power. However, to avoid the terminal device from sending UL WUS frequently or unnecessarily, causing unnecessary resource waste, the first condition needs to be restricted. Optionally, as Figure 4 shown, the first condition includes one or more of the following information A to information B:

[0232] Information A. The terminal device continuously sends N out-of-sync indications to the upper layer and the network device has a power margin, N is less than N310, and N is a positive integer.

[0233] Information B. The terminal device continuously sends N310 out-of-sync indications to the upper layer and the network device has a power margin.

[0234] For information A, a counter N is defined, and the value of the counter is less than N310. When the terminal device continuously sends N out-of-sync indications to the upper layer and the network device has a power margin, it triggers the terminal device to send UL WUS to trigger the network device to adjust the transmission power.

[0235] It should be understood that after the terminal device continuously sends N310 out-of-sync indications to the upper layer, a timer T310 will be started. In the condition of information A, the terminal device sets N to be less than N310, thus eliminating the start of timer T310 and avoiding triggering a wireless link failure.

[0236] For information B, if the terminal device detects that it has continuously sent N310 out-of-sync indications to the upper layer, it starts T310. At this time, if the network device has a power margin, it triggers the terminal device to send UL WUS.

[0237] Optionally, the terminal device may determine N based on the third information sent by the network device, where the third information is used to indicate the threshold N for the number of out-of-sync indications sent by the terminal device.

[0238] In another implementation, the terminal device continuously sends N310 out-of-sync indications to the upper layer, and the network device has no power margin. The terminal device triggers a radio link failure and subsequent RRC re-establishment based on the out-of-sync indications.

[0239] For the terminal device to send a first signal to the network device, in one implementation, the terminal device includes a first module and a second module for receiving and transmitting information. At least one of the first module and the second module is different in power consumption, hardware composition, and the waveform of the transmitted signal. The power consumption of the first module is less than that of the second module. The terminal device sends the first signal to the network device based on the first module.

[0240] When the terminal device sends the first signal to the network device based on the first module, the network device may receive the first signal based on the first module, and then adjust the transmission power of the second module of the network device according to the first signal.

[0241] It should be understood that the network device includes a first module and a second module for receiving and transmitting information. At least one of the first module and the second module is different in power consumption, hardware composition, and the waveform of the transmitted signal. The power consumption of the first module is less than that of the second module. In this scenario, the first module is used to ensure coverage and the transmission power is relatively fixed, and the second module is used to provide services to users and the transmission power can be dynamically adjusted. Therefore, on the premise that the network device still has power margin, if it is still within the coverage range of the first module, link recovery can be performed by triggering the network device to adjust the transmission power to reduce unnecessary connection reconstructions.

[0242] Optionally, based on the network device including a first module and a second module for receiving and transmitting information, the terminal device also includes a first module and a second module for receiving and transmitting information. Correspondingly, the terminal device may send the first signal to the network device based on the second module. The network device receives the first signal based on the first module, and then adjusts the transmission power of the second module of the network device according to the first signal.

[0243] II. Beam Failure Monitoring and Recovery

[0244] In one implementation, the terminal device determines whether to send a beam failure instance indication based on the first information and the second information.

[0245] In this implementation manner, the first information includes the signal quality of the first beam between the terminal device and the network device, and the second information includes whether there is power margin for the first beam and / or the range of the power margin of the first beam. The first beam can be understood as the current beam for communication between the terminal device and the network device. When performing beam switching, the terminal device will switch the first beam to another beam.

[0246] It should be understood that the power margin of the beam may be the same as or different from the power margin of the network device. In this embodiment, considering that the current beam may not be transmitted at full power, resulting in beam failure, therefore, during the process of beam failure monitoring and recovery, the power margin of the current beam is combined to determine beam failure and recover the beam.

[0247] Optionally, the beam failure indication may also be referred to as beam failure event indication or beam failure instance indication.

[0248] Optionally, the conditions for the terminal device to send a beam failure indication include one or more of the following information A to information D.

[0249] Information A. The signal quality of the first beam is less than the third threshold.

[0250] Information B. The signal quality of the first beam is less than the third threshold, and there is no power margin for the first beam.

[0251] Information C. The signal quality of the first beam is less than the third threshold, and the signal quality of the candidate beam is greater than or equal to the third threshold.

[0252] Information D. The signal quality of the first beam is less than the third threshold, and the signal quality of the candidate beam is greater than or equal to the seventh threshold.

[0253] For information A, when the terminal device determines whether to send a beam failure indication, it does not consider the influence of the power margin of the beam.

[0254] For information C and information D, the thresholds for the signal quality of the first beam and the signal quality of the candidate beam may be the same or different.

[0255] For information A to information D, in the process of beam failure monitoring, the terminal device measures the beam failure detection reference signal at the physical layer and determines whether a beam failure event occurs according to the measurement result. For example, the block error rate of PDCCH satisfies exceeding the preset threshold Qout,LR. Correspondingly, the third threshold can be understood as the threshold / limit of the link quality in the beam failure monitoring process. The signal quality of the first beam being less than the first threshold can be understood as, for example, the block error rate of PDCCH being greater than or equal to the preset threshold Qout,LR. When the signal quality of the beam is less than the third threshold, it indicates that the signal quality or link quality of the beam is poor, and the terminal device is triggered to send a beam failure indication.

[0256] It should be understood that the block error rate of PDCCH is only one of the metrics of the beam compared with the preset threshold Qout,LR. In actual applications, other metrics can also be selected for comparison according to actual requirements.

[0257] If the terminal device determines that the conditions for sending the beam failure indication are met, the physical layer of the terminal device sends a beam failure indication to the upper layer.

[0258] In another implementation, the terminal device determines whether to send a beam failure indication based on the first information.

[0259] When the terminal device determines that the signal quality of the first beam between the terminal device and the network device is less than the third threshold, the physical layer of the terminal device will report a beam failure indication to the upper layer without considering the power margin of the first beam.

[0260] It should be understood that the terminal device incorporates the power margin of the current beam as one of the conditions for sending the beam failure indication, so that when there is a power margin in the current beam, the network device is preferentially triggered to adjust the transmit power to restore the current beam, in order to reduce unnecessary beam switching processes.

[0261] After the physical layer of the terminal device sends a beam failure indication to the upper layer, in one implementation, when the second condition is met, the terminal device sends a first signal to the network device, and the first signal is used to trigger the network device to adjust the transmit power.

[0262] In this implementation, during the beam failure monitoring and recovery process, the terminal device will send a first signal to the network device when the second condition is met to trigger the network device to adjust the transmit power. If the second condition is not met, the terminal device performs random access.

[0263] Optionally, the first signal is an uplink wake up signal (UL WUS).

[0264] Optionally, the second condition includes one or more of the following information A to information E.

[0265] Information A. The number of beam failure indications is equal to the second threshold, and there is power margin for the first beam.

[0266] Information B. The signal quality of the first beam is less than the third threshold, there is power margin for the first beam, and the second threshold is less than the third threshold.

[0267] Information C. The sum of the signal quality of the first beam and the power margin of the first beam is greater than or equal to the fourth threshold.

[0268] Information D. The signal quality of the first beam is less than the fifth threshold, and the sum of the signal quality of the first beam and the power margin of the first beam is greater than or equal to the sixth threshold.

[0269] Information E. The signal quality of the candidate beam is less than the fifth threshold, and the sum of the signal quality of the candidate beam and the power margin of the candidate beam is greater than or equal to the sixth threshold.

[0270] Information A corresponds to the process of beam failure monitoring. The network side configures the maximum value (beam failure instance max count) of the number of consecutive beam failure indications received by the terminal at the MAC layer. In this embodiment, the second threshold corresponds to the number of consecutive beam failure indications received by the MAC layer, and the value of the second threshold is set to be less than the maximum value, so as to execute the process of restoring the first beam in advance before the number of beam failure indications reaches the maximum value and is determined to be a beam failure. On this basis, when the terminal device determines that there is power margin for the first beam, the terminal device is triggered to send a first signal to the network device, triggering the network device to adjust the transmission power to avoid the first beam from being switched.

[0271] For Information B, the signal quality of the first beam being less than the third threshold can be replaced by detecting that the signal quality of the first beam is less than the third threshold continuously for M times. It should be understood that only when there is no power margin for the first beam, if the signal quality of the first beam is less than the third threshold, the terminal device will be triggered to send a beam failure indication to the MAC layer. Among them, the third threshold can be understood as the threshold value for signal quality. When the signal quality is less than the third threshold, it indicates that the signal quality of the first beam is poor.

[0272] Information C, D, and E all correspond to the process of new candidate beam identification. In the process of new candidate beam identification, the physical layer of the terminal device reports the measurement results exceeding the L1-RSRP threshold to the upper layer.

[0273] Corresponding to Information C, the fourth threshold can correspond to the L1-RSRP threshold.

[0274] Compared with directly selecting candidate beams based on the measurement results of reference signals, in this embodiment, in addition to considering the measurement results of reference signals (i.e., the signal quality of the first beam), the power margin of the first beam is also considered. When the condition of Information C is satisfied, the terminal device is triggered to send a first signal to the network device, rather than directly reporting the measurement results greater than or equal to the threshold to the upper layer. Thus, before identifying candidate beams, by triggering the network device to adjust the transmit power, an attempt is made to restore the connection of the first beam. If the signal quality of the first beam meets the conditions after the network device adjusts the transmit power, the terminal device and the network device can continue to communicate based on the first beam without having to switch the first beam to other beams, thereby avoiding beam switching, further reducing network energy consumption, and reducing energy consumption losses. Corresponding to Information D, the fifth threshold can correspond to the threshold of L1-RSRP, or the received quality of the reference signal (RSRQ), or the signal to interference and noise ratio (SINR), or the signal-to-noise ratio (SNR). The sixth threshold can correspond to the threshold of L1-RSRP, or RSRQ, or SINR, or SNR.

[0275] In Information E, the terminal device mainly judges based on the signal quality of the candidate beam and the power margin of the candidate beam to determine whether the candidate beam has better channel quality than the current first beam after adjusting the transmit power. It should be understood that different beams are associated with different first signals, and the first signal includes the beam index corresponding to different beams.

[0276] Optionally, when the signal quality of the candidate beam is greater than the sixth threshold, the terminal device is triggered to initiate random access.

[0277] For Information C, D, and E, when the signal quality of the candidate beam is greater than or equal to the fifth threshold, the terminal device is triggered to perform random access.

[0278] In a possible implementation, when the third condition is satisfied, the terminal device sends a second signal to the network device, and the second signal is used to switch from the first beam to the candidate beam. Optionally, the third condition includes:

[0279] The sum of the signal quality of the first beam and the power margin of the first beam is less than the fourth threshold, and the sum of the signal quality of the candidate beam and the power margin of the candidate beam is greater than or equal to the fourth threshold.

[0280] It should be understood that the terminal device incorporates the power headroom of the first beam as one of the conditions for beam switching. When the sum of the signal quality of the first beam and the power headroom of the first beam is less than the fourth threshold, it indicates that adjusting the transmit power of the first beam cannot restore the first beam. In this case, beam switching is performed to reduce unnecessary beam restoration and switching processes.

[0281] In a scenario where both the terminal device and the network device include a first module and a second module for transmitting and receiving information, taking the first module as a low-power transceiver and the second module as a main transceiver as an example, since the transmit power of the main transceiver of the network device is dynamically adjustable, there may be a situation where the terminal device is not within the coverage range of the main transceiver of the network device due to the movement of the user. At this time, beam failure may also be triggered. However, in this scenario, the optimal beam of the terminal device may still be the current beam. Therefore, the power headroom of the current beam needs to be considered.

[0282] Since the transmit power of the main transceiver of the network device can be dynamically adjusted, as Figure 5 shown, taking the terminal device as a UE as an example, there are the following two potential beam failure scenarios.

[0283] The first (case 1): Switch to the target beam. The UE moves to another beam, that is, beam failure is caused after changing the optimal beam.

[0284] The second (case 2): Increase the transmit power of the original beam. The UE does not move to another beam, that is, the optimal beam is still the current beam, and beam failure is only caused because the current beam is not transmitting at full power.

[0285] For the beam failure monitoring and recovery in the above two scenarios, this embodiment enhances the beam failure monitoring and recovery process by combining the power headroom of the beam to avoid unnecessary beam switching. The following specifically describes this process in combination with the above content.

[0286] 1. Beam failure monitoring

[0287] When the signal quality of the first beam is less than the second threshold, the physical layer of the terminal device sends a beam failure indication to the MAC layer. In this embodiment, there are the following possible implementation methods for beam failure monitoring:

[0288] (1) If the signal quality of the first beam is less than the third threshold, the terminal device is triggered to send a beam failure indication.

[0289] In this implementation method, when the number of beam failure indications reaches the second threshold, if the first beam has power headroom, the terminal device is triggered to send the first signal and reset the timer. When the number of beam failure indications reaches the third threshold, the terminal device is triggered to perform random access.

[0290] (2) If the signal quality of the first beam is less than the third threshold and there is no power margin for the first beam, trigger the terminal device to send a beam failure indication.

[0291] In this implementation, when the signal quality of the first beam is less than the third threshold (or the signal quality of the first beam is detected to be less than the third threshold continuously for M times), if there is a power margin for the first beam, trigger the terminal device to send a first signal to the network device. Only when there is no power margin for the first beam and the signal quality of the first beam is less than the third threshold, will the terminal device be triggered to send a beam failure indication to the MAC layer.

[0292] (3) If the signal quality of the first beam is less than the third threshold and the signal quality of the candidate beam is greater than or equal to the third threshold, trigger the terminal device to send a beam failure indication.

[0293] In this implementation, the terminal device determines whether to send a beam failure indication based on the signal quality of the first beam and the signal quality of the candidate beam, without considering whether there is a power margin for the first beam.

[0294] (4) If the signal quality of the first beam is less than the third threshold and the signal quality of the candidate beam is greater than or equal to the seventh threshold, trigger the terminal device to send a beam failure indication.

[0295] 2. New candidate beam identification

[0296] In this embodiment, in addition to considering the signal quality of the beam, the power margin of the beam is also considered. Correspondingly, there are several possible implementation methods for new candidate beam identification:

[0297] (1) If the sum of the signal quality of the first beam and the power margin of the first beam is greater than or equal to the fourth threshold, trigger the terminal device to send a first signal.

[0298] (2) If the sum of the signal quality of the first beam and the power margin of the first beam is less than the fourth threshold and the sum of the signal quality of the candidate beam and the power margin of the candidate beam is greater than or equal to the fourth threshold, perform beam switching.

[0299] (3) If the signal quality of the first beam is less than the fifth threshold and the sum of the signal quality of the first beam and the power margin of the first beam is greater than or equal to the sixth threshold, trigger the terminal device to send a first signal.

[0300] (4) If the signal quality of the candidate beam is less than the fifth threshold and the sum of the signal quality of the candidate beam and the power margin of the candidate beam is greater than or equal to the sixth threshold, trigger the terminal device to perform random access.

[0301] (5) If the signal quality of the candidate beam is greater than or equal to the sixth threshold, trigger the random access of the terminal device.

[0302] It should be understood that different beams are associated with different first signals, and the first signal includes the index information of the beam.

[0303] In an implementation manner for the terminal device to send the first signal to the network device, the terminal device includes a first module and a second module for transceiver information. At least one of the power consumption, hardware composition, and waveform of the transmitted signal of the first module and the second module is different, and the power consumption of the first module is less than that of the second module. The terminal device sends the first signal to the network device based on the first module.

[0304] When the terminal device sends the first signal to the network device based on the first module, the network device can receive the first signal based on the first module, and then adjust the transmission power of the second module of the network device according to the first signal.

[0305] 3. Beam recovery request

[0306] For the above-mentioned first scenario (case 1) and second scenario (case 2), they respectively correspond to the scenarios of beam switching and increasing the transmission power of the original beam. Among them, in the first scenario, the terminal device will send a second signal to the network device, and the second signal is used to switch from the first beam to the candidate beam. In the second scenario, the terminal device will send a first signal to the network device, and the first signal is used to trigger the network device to adjust the transmission power.

[0307] Optionally, at least one of the resources, waveforms, and sequences of the first signal and the second signal is different. The terminal device can perform the beam recovery request based on one or more of different resources (time-frequency resources), waveforms (different signals), or sequences (different preamble sequences) in different scenarios, so as to preferentially adjust the radio link quality by adjusting the transmission power of the network device to ensure the availability of the connection / beam.

[0308] Correspondingly, in the beam recovery request stage, the beam recovery requests for these two scenarios can be distinguished by different signals or resources.

[0309] The following will respectively describe the process of the beam recovery request based on different signals and resources.

[0310] (1) Based on different signals

[0311] In this implementation manner, for the above two scenarios, the configured signals are different.

[0312] For example, for the case of Case 1, the high layer of the terminal device configures a dedicated random access channel (RACH) Type 1, and the terminal device sends a second signal to the network device. For the case of Case 2, the high layer of the terminal device configures a first signal, and the terminal device sends a first signal to the network device.

[0313] (2) Based on different resources

[0314] In this implementation method, for the above two scenarios, the configured signals are the same, but the resources are different.

[0315] For example, for the case of Case 1, the high layer of the terminal device configures a dedicated RACH Type 1. For the original beam, the transmit power is increased, and the high layer also configures a dedicated RACH Type 1. However, the preambles associated with the RACH resources for different purposes are different, that is, they are distinguished by different sequences. For the case of Case 2, the high layer of the terminal device configures a dedicated RACH Type 2, and RACH Type 2 is associated with different RACH resources from RACH Type 1, such as time-frequency domain resources, sequence length, etc.

[0316] Optionally, RACH Type 1 or RACH Type 2 may include one or more preambles. When multiple different preambles are included, different preambles may be associated with different powers.

[0317] 4. Beam recovery response

[0318] For the above first scenario (Case 1) and second scenario (Case 2), they respectively correspond to the scenarios of beam switching and increasing the transmit power of the original beam. In the beam recovery response stage, the processing of the beam recovery response for these two scenarios is also different.

[0319] For the case of Case 1, if the terminal device initiates random access based on RACH Type 1 and does not receive a successful response from the network device before the timer (beam failure recovery timer), the physical layer of the terminal device will report a beam recovery request failure indication to the high layer of the terminal device.

[0320] For the case of case 2, if the terminal device initiates random access based on RACH Type 2 or triggers the terminal device to send a first signal, and if the terminal device does not detect an adjustment in the transmission power of the network device within a first time period (or before a timer (beam failurerecovery timer)), or if the signal quality of the first beam is less than a third threshold after the terminal device detects an adjustment in the transmission power of the network device within the first time period, the terminal device sends an indication of failure to request beam recovery to the upper layer.

[0321] Optionally, for the first threshold to the seventh threshold mentioned in this embodiment, the terminal device may determine the first threshold, the second threshold, the third threshold, the fourth threshold, the fifth threshold, the sixth threshold, and the seventh threshold based on fourth information configured by the network device.

[0322] Among them, the fourth information is used to configure at least one of the following information: a first threshold corresponding to the signal quality of a radio link, a second threshold corresponding to the number of beam failure indications, a third threshold corresponding to the signal quality of the first beam, a fourth threshold corresponding to the sum of the signal quality of the first beam and the power margin of the first beam, a fifth threshold corresponding to the signal quality of the first beam, a fifth threshold corresponding to the signal quality of a candidate beam, a sixth threshold corresponding to the sum of the signal quality of the candidate beam and the power margin of the candidate beam, or a seventh threshold corresponding to the signal quality of the candidate beam.

[0323] Optionally, the fourth information may be carried by at least one of the following: a system message, RRC signaling, a MAC CE, or predefined.

[0324] It should be understood that during the monitoring and recovery of a radio link, and / or during the monitoring and recovery of beam failure, the transmission power of the network device is adjusted in combination with the power margin of the network device. The wireless link quality is preferentially adjusted by adjusting the transmission power on the network side to ensure the availability of the connection or beam, thereby reducing unnecessary RRC connection reestablishment and the random access / beam recovery process initiated by beam failure.

[0325] Please refer to Figure 6 , an embodiment of the present application provides a communication device 600. The communication device 600 can implement the functions of the terminal device or the network device in the above method embodiment, and thus can also achieve the beneficial effects possessed by the above method embodiment. In the embodiment of the present application, the communication device 600 may be a terminal device (or a network device), or an integrated circuit or component inside the terminal device (network device), such as a chip.

[0326] It should be noted that the communication device 600 may include a sending unit and a receiving unit, which are respectively used to perform sending and receiving.

[0327] In a possible implementation, when the device 600 is used to execute the method performed by the terminal device in the foregoing embodiment, the device 600 includes a processing unit 601 and a transceiver unit 602. The processing unit 601 is used to obtain first information, where the first information includes the signal quality of a wireless link with a network device and / or the signal quality of a beam with the network device; the transceiver unit 602 is used to receive second information from the network device, where the second information is related to the power headroom of the network device; the processing unit 601 is further used to perform beam failure monitoring and recovery, and / or wireless link monitoring and recovery according to the first information and the second information.

[0328] In a possible implementation, when the device 600 is used to execute the method performed by the network device in the foregoing embodiment, the device 600 includes a transceiver unit 602; the transceiver unit 602 is used to send second information to the terminal device, where the second information is related to the power headroom of a second module of the network device.

[0329] It should be noted that for the content such as the information execution process of the units of the foregoing communication device 600, reference may be specifically made to the description in the method embodiments shown in the foregoing of this application, which will not be elaborated here.

[0330] Please refer to Figure 7 , which is another schematic structural diagram of the communication device 700 provided in this application. The communication device 700 includes a logic circuit 701 and an input / output interface 702. Among them, the communication device 700 may be a chip or an integrated circuit.

[0331] Among them, Figure 6 the shown transceiver unit 602 may be a communication interface, and this communication interface may be Figure 7 the input / output interface 702 in

[0332] Optionally, the logic circuit 701 is used to obtain first information, where the first information includes the signal quality of a wireless link with a network device and / or the signal quality of a beam with the network device; the input / output interface 702 is used to receive second information from the network device, where the second information is related to the power headroom of the network device; the logic circuit 701 is further used to perform beam failure monitoring and recovery, and / or wireless link monitoring and recovery according to the first information and the second information.

[0333] Optionally, the input / output interface 702 is used to send second information to the terminal device, where the second information is related to the power headroom of a second module of the network device.

[0334] Among them, the logic circuit 701 and the input / output interface 702 can also perform other steps executed by the terminal device or the network device in any of the embodiments and achieve the corresponding beneficial effects, which will not be elaborated here.

[0335] In a possible implementation, Figure 6 the processing unit 601 shown can be Figure 7 the logic circuit 701 in

[0336] Optionally, the logic circuit 701 can be a processing device, and the functions of the processing device can be implemented partially or entirely by software. Among them, the functions of the processing device can be implemented partially or entirely by software.

[0337] Optionally, the processing device can include a memory and a processor. Among them, the memory is used to store a computer program, and the processor reads and executes the computer program stored in the memory to perform the corresponding processing and / or steps in any of the method embodiments.

[0338] Optionally, the processing device can include a processor. The memory for storing the computer program is located outside the processing device, and the processor is connected to the memory through a circuit / wire to read and execute the computer program stored in the memory. Among them, the memory and the processor can be integrated together or physically independent of each other.

[0339] Optionally, the processing device can be one or more chips, or one or more integrated circuits. For example, the processing device can be one or more field-programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), system on chips (SoCs), central processor units (CPUs), network processors (NPs), digital signal processing circuits (DSPs), microcontroller units (MCUs), programmable logic devices (PLDs), or other integrated chips, or any combination of the above chips or processors, etc.

[0340] Please refer to Figure 8 , for the communication device 800 involved in the above embodiments provided by the embodiments of the present application. The communication device 800 can specifically be the communication device that is the terminal device in the above embodiments, Figure 8The example shown is implemented by the terminal device (or components in the terminal device).

[0341] Among them, it is a schematic diagram of a possible logical structure of the communication device 800, and the communication device 800 may include but is not limited to at least one processor 801 and a communication port 802.

[0342] Among them, Figure 6 The shown transceiver unit 602 may be a communication interface, and this communication interface may be Figure 8 the communication port 802 in it, and this communication port 802 may include an input interface and an output interface. Alternatively, this communication port 802 may also be a transceiver circuit, and this transceiver circuit may include an input interface circuit and an output interface circuit.

[0343] Further optionally, the device may also include at least one of a memory 803 and a bus 804. In the embodiments of the present application, the at least one processor 801 is used to control and process the actions of the communication device 800.

[0344] In addition, the processor 801 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logic blocks, modules, and circuits described in combination with the disclosure of the present application. This processor may also be a combination that realizes computing functions, such as a combination including one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be elaborated herein.

[0345] It should be noted that Figure 8 the shown communication device 800 can specifically be used to implement the steps implemented by the terminal device in the foregoing method embodiments, and achieve the technical effects corresponding to the terminal device. Figure 8 For the specific implementation manners of the shown communication device, reference can be made to the descriptions in the foregoing method embodiments, and details will not be repeated here one by one.

[0346] Please refer to Figure 9 , which is a schematic diagram of the structure of the communication device 900 involved in the foregoing embodiments provided by the embodiments of the present application. The communication device 900 may specifically be the communication device serving as a network device in the foregoing embodiments. Figure 9 The example shown is implemented by the network device (or components in the network device). Among them, the structure of this communication device may refer to Figure 9 the structure shown.

[0347] The communication device 900 includes at least one processor 911 and at least one network interface 914. Further optionally, the communication device further includes at least one memory 912, at least one transceiver 913, and one or more antennas 915. The processor 911, the memory 912, the transceiver 913, and the network interface 914 are connected, for example, connected by a bus. In the embodiments of the present application, this connection may include various interfaces, transmission lines, or buses, etc., and this embodiment does not limit this. The antenna 915 is connected to the transceiver 913. The network interface 914 is used to enable the communication device to communicate with other communication devices through a communication link. For example, the network interface 914 may include a network interface between the communication device and core network devices, such as an S1 interface. The network interface may include a network interface between the communication device and other communication devices (such as other network devices or core network devices), such as an X2 or Xn interface.

[0348] Among them, Figure 6 The shown transceiver unit 602 may be a communication interface, and this communication interface may be Figure 9 the network interface 914 in it. The network interface 914 may include an input interface and an output interface. Or, the network interface 914 may also be a transceiver circuit, and this transceiver circuit may include an input interface circuit and an output interface circuit.

[0349] The processor 911 is mainly used to process communication protocols and communication data, and to control the entire communication device, execute software programs, and process the data of software programs. For example, it is used to support the communication device to perform the actions described in the embodiments. The communication device may include a baseband processor and a central processor. The baseband processor is mainly used to process communication protocols and communication data, and the central processor is mainly used to control the entire terminal device, execute software programs, and process the data of software programs. Figure 9 The processor 911 in it may integrate the functions of the baseband processor and the central processor. Those skilled in the art can understand that the baseband processor and the central processor may also be independent processors, interconnected through technologies such as a bus. Those skilled in the art can understand that the terminal device may include multiple baseband processors to adapt to different network modes, the terminal device may include multiple central processors to enhance its processing ability, and various components of the terminal device may be connected through various buses. The baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip. The central processor may also be expressed as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data may be built into the processor or stored in the memory in the form of a software program, and the processor executes the software program to implement the baseband processing function.

[0350] The memory is mainly used to store software programs and data. The memory 912 can exist independently and be connected to the processor 911. Optionally, the memory 912 can be integrated with the processor 911, for example, integrated within a single chip. Among them, the memory 912 can store the program code for implementing the technical solution of the embodiments of the present application, and be controlled by the processor 911 for execution. Various computer program codes to be executed can also be regarded as the driver programs of the processor 911.

[0351] Figure 9 Only one memory and one processor are shown. In an actual terminal device, there can be multiple processors and multiple memories. The memory can also be referred to as a storage medium or a storage device, etc. The memory can be a storage element on the same chip as the processor, that is, an on-chip storage element, or an independent storage element. The embodiments of the present application do not make any limitations in this regard.

[0352] The transceiver 913 can be used to support the reception or transmission of radio frequency signals between the communication device and the terminal. The transceiver 913 can be connected to the antenna 915. The transceiver 913 includes a transmitter Tx and a receiver Rx. Specifically, one or more antennas 915 can receive radio frequency signals. The receiver Rx of the transceiver 913 is used to receive the radio frequency signals from the antenna, convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and provide the digital baseband signals or digital intermediate frequency signals to the processor 911 so that the processor 911 can perform further processing on the digital baseband signals or digital intermediate frequency signals, such as demodulation processing and decoding processing. In addition, the transmitter Tx in the transceiver 913 is also used to receive the modulated digital baseband signals or digital intermediate frequency signals from the processor 911, convert the modulated digital baseband signals or digital intermediate frequency signals into radio frequency signals, and transmit the radio frequency signals through one or more antennas 915. Specifically, the receiver Rx can selectively perform one or more levels of down-conversion processing and analog-to-digital conversion processing on the radio frequency signals to obtain digital baseband signals or digital intermediate frequency signals, and the order of the down-conversion processing and the analog-to-digital conversion processing can be adjusted. The transmitter Tx can selectively perform one or more levels of up-conversion processing and digital-to-analog conversion processing on the modulated digital baseband signals or digital intermediate frequency signals to obtain radio frequency signals, and the order of the up-conversion processing and the digital-to-analog conversion processing can be adjusted. Digital baseband signals and digital intermediate frequency signals can be collectively referred to as digital signals.

[0353] The transceiver 913 can also be referred to as a transceiver unit, a transceiver, a transceiver device, etc. Optionally, the devices in the transceiver unit for implementing the reception function can be regarded as the receiving unit, and the devices in the transceiver unit for implementing the transmission function can be regarded as the transmitting unit, that is, the transceiver unit includes a receiving unit and a transmitting unit. The receiving unit can also be referred to as a receiver, an input port, a receiving circuit, etc., and the transmitting unit can be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0354] It should be noted that Figure 9 The illustrated communication device 900 can specifically be used to implement the steps implemented by the network device in the foregoing method embodiments, and achieve the corresponding technical effects of the network device. Figure 9 For the specific implementation manners of the illustrated communication device 900, reference can be made to the descriptions in the foregoing method embodiments, and details are not described herein again.

[0355] Please refer to Figure 10 for the structural schematic diagram of the communication device involved in the foregoing embodiments provided by the embodiments of the present application.

[0356] It can be understood that the communication device 100 includes, for example, modules, units, elements, circuits, or interfaces, etc., which are appropriately configured together to execute the technical solutions provided by the present application. The communication device 100 may be the foregoing terminal device or network device, or may be a component (such as a chip) in these devices, for implementing the methods described in the following method embodiments. The communication device 100 includes one or more processors 101. The processor 101 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as, a RAN node, a terminal, or a chip, etc.), execute software programs, and process the data of the software programs.

[0357] Optionally, in one design, the processor 101 may include a program 103 (sometimes also referred to as code or instructions), and the program 103 can be run on the processor 101, so that the communication device 100 executes the methods described in the following embodiments. In another possible design, the communication device 100 includes a circuit ( Figure 10 not shown).

[0358] Optionally, the communication device 100 may include one or more memories 102, on which there is a program 104 (sometimes also referred to as code or instructions), and the program 104 can be run on the processor 101, so that the communication device 100 executes the methods described in the foregoing method embodiments.

[0359] Optionally, the processor 101 and / or the memory 102 may include AI modules 107, 108, and the AI modules are used to implement AI-related functions. The AI modules can be implemented in a software, hardware, or a combination of software and hardware manner. For example, the AI modules may include a radio intelligence control (RIC) module. For example, the AI modules may be near real-time RIC or non-real-time RIC.

[0360] Optionally, data may also be stored in the processor 101 and / or the memory 102. The processor and the memory may be provided separately or integrated together.

[0361] Optionally, the communication device 100 may further include a transceiver 105 and / or an antenna 106. The processor 101 is sometimes also referred to as a processing unit and controls the communication device (such as a RAN node or a terminal). The transceiver 105 is sometimes also referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and is used to implement the transceiver function of the communication device through the antenna 106.

[0362] Among them, Figure 6 The illustrated processing unit 601 may be the processor 101. Figure 6 The illustrated transceiver unit 602 may be a communication interface, and this communication interface may be Figure 10 the transceiver 105 in, and the transceiver 105 may include an input interface and an output interface. Alternatively, the transceiver 105 may also be a transceiver circuit, and the transceiver circuit may include an input interface circuit and an output interface circuit.

[0363] An embodiment of the present application further provides a computer-readable storage medium, which is used to store one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes the method described in the possible implementation manners of the first communication device or the second communication device in the foregoing embodiments.

[0364] An embodiment of the present application further provides a computer program product (or referred to as a computer program). When the computer program product is executed by the processor, the processor executes the method in the possible implementation manners of the foregoing first communication device or second communication device.

[0365] An embodiment of the present application further provides a chip system, which includes at least one processor and is used to support the communication device to implement the functions involved in the possible implementation manners of the foregoing communication device. Optionally, the chip system further includes an interface circuit, and the interface circuit provides program instructions and / or data for the at least one processor. In a possible design, the chip system may further include a memory, which is used to store the necessary program instructions and data of the communication device. The chip system may be composed of chips or may include chips and other discrete devices, where the communication device may specifically be the first communication device or the second communication device in the foregoing method embodiments.

[0366] An embodiment of the present application further provides a communication system, and the network system architecture includes the first communication device and the second communication device in any of the foregoing embodiments.

[0367] In several embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections between each other can be through some interfaces, and the indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms.

[0368] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0369] In addition, in each embodiment of the present application, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units. If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present application, in essence, or the part that makes a contribution, or all or part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of the present application. The foregoing storage medium includes: USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical disks, and other various media that can store program codes.

Claims

1. A communication method, characterized in that, The method is applied to a terminal device, and the method includes: Obtaining first information, where the first information includes the signal quality of a wireless link with a network device and / or the signal quality of a beam with the network device; Receiving second information from the network device, where the second information is related to the power headroom of the network device; Performing beam failure monitoring and recovery, and / or wireless link monitoring and recovery according to the first information and the second information.

2. The method according to claim 1, characterized in that, Performing wireless link monitoring and recovery according to the first information and the second information includes: When a first condition is met, sending a first signal to the network device, where the first signal is used to trigger the network device to adjust the transmission power.

3. The method according to claim 2, wherein The first condition includes at least one of the following: Continuously sending N out-of-sync indications to a higher layer, and the network device has the power headroom, N is less than N310, and N is a positive integer; or, Continuously sending N310 out-of-sync indications to the higher layer, and the network device has the power headroom.

4. The method according to claim 3, characterized in that, The conditions for sending the out-of-sync indication include at least one of the following: The signal quality of the wireless link is less than a first threshold; or, The signal quality of the wireless link is less than the first threshold, and the network device has the power headroom.

5. The method according to any one of claims 2 to 4, characterized in that The terminal device includes a first module and a second module for sending and receiving information. At least one of the first module and the second module is different in power consumption, hardware composition, and the waveform of the transmitted signal. The power consumption of the first module is less than that of the second module. Sending the first signal to the network device includes: Sending the first signal to the network device based on the first module.

6. The method according to any one of claims 1 to 5, characterized in that Performing beam failure monitoring and recovery according to the first information and the second information includes: When a second condition is met, sending a first signal to the network device, where the first signal is used to trigger the network device to adjust the transmission power.

7. The method according to claim 6, wherein The second condition includes at least one of the following: The number of beam failure indications is equal to a second threshold, and the first beam has the power headroom; or, The signal quality of the first beam is less than a third threshold, and the first beam has the power headroom, and the second threshold is less than the third threshold; or, The sum of the signal quality of the first beam and the power headroom of the first beam is greater than or equal to a fourth threshold; or, The signal quality of the first beam is less than a fifth threshold, and the sum of the signal quality of the first beam and the power headroom of the first beam is greater than or equal to a sixth threshold; Or, The signal quality of a candidate beam is less than a fifth threshold, and the sum of the signal quality of the candidate beam and the power headroom of the candidate beam is greater than or equal to a sixth threshold.

8. The method according to claim 7, wherein The condition for sending a beam failure indication is: The signal quality of the first beam is less than a third threshold; or, The signal quality of the first beam is less than the third threshold, and the first beam does not have the power headroom; or, The signal quality of the first beam is less than the third threshold, and the signal quality of the candidate beam is greater than or equal to the third threshold; or, The signal quality of the first beam is less than the third threshold, and the signal quality of the candidate beam is greater than or equal to the seventh threshold.

9. The method according to any one of claims 1 to 5, characterized in that Performing beam failure monitoring and recovery according to the first information and the second information includes: When a third condition is met, sending a second signal to the network device, where the second signal is used to switch from the first beam to the candidate beam.

10. The method according to claim 9, characterized in that The third condition includes: The sum of the signal quality of the first beam and the power margin of the first beam is less than the fourth threshold, and the sum of the signal quality of the candidate beam and the power margin of the candidate beam is greater than or equal to the fourth threshold.

11. The method according to any one of claims 6 to 10, characterized in that, At least one of the resources, waveforms, and sequences of the first signal and the second signal is different.

12. The method according to any one of claims 1 to 11, characterized in that The method further includes: If the transmission power of the network device is not detected to be adjusted within a first time period, or if the signal quality of the first beam is less than the third threshold after the transmission power of the network device is detected to be adjusted within the first time period, sending a beam recovery request failure indication to a higher layer.

13. A communication method, characterized in that, The method is applied to a network device, the network device includes a first module and a second module for transceiver information, at least one of the power consumption, hardware composition, and waveform of the transmitted signal of the first module and the second module is different, and the power consumption of the first module is less than the power consumption of the second module. The method includes: Sending second information to the terminal device, where the second information is related to the power margin of the second module of the network device.

14. The method according to claim 13, wherein The method further includes: Receiving a first signal from the terminal device; Adjusting the transmission power of the second module of the network device according to the first signal.

15. The method according to claim 13, wherein Receiving the first signal from the terminal device includes: Receiving the first signal from the terminal device based on the first module.

16. The method according to any one of claims 13 to 15, characterized in that The method further includes: Sending third information to the terminal device, where the third information is used to indicate a threshold N for the number of times the terminal device sends an out-of-sync indication, N is related to a first condition for the terminal device to send the first signal, and N is less than or equal to N310.

17. The method according to any one of claims 13 to 16, characterized in that, The method further includes: Sending fourth information to the terminal device, where the fourth information is used to configure at least one of the following information: A first threshold for the signal quality of a radio link; or, A second threshold for the number of beam failure indications; or, A third threshold for the signal quality of the first beam; or, A fourth threshold for the sum of the signal quality of the first beam and the power margin of the first beam; or, A fifth threshold for the signal quality of the first beam; or, A fifth threshold for the signal quality of the candidate beam; or, A sixth threshold for the sum of the signal quality of the candidate beam and the power margin of the candidate beam; or, A seventh threshold for the signal quality of the candidate beam.

18. The method according to any one of claims 13 to 17, characterized in that The method further includes: Receiving a second signal from the terminal device; Switching from the first beam to the candidate beam according to the second signal.

19. A communication device, characterized in that, Including a module for performing the method according to any one of claims 1 to 18.

20. A communication device, characterized in that, Including at least one processor, where the at least one processor is coupled to a memory; the at least one processor is used to perform the method according to any one of claims 1 to 18.

21. The communication device according to claim 20, wherein The communication device is a chip or a chip system.

22. A readable storage medium, characterized in that, The storage medium stores a computer program or instructions, and when the computer program or instructions are executed by a communication device, the method according to any one of claims 1 to 18 is implemented.

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