CN110167203A - The method and apparatus of wave beam failure recovery - Google Patents

Abstract

Embodiments of the present application provide a method and device for beam failure recovery. The beam failure recovery method of the present application includes: when a beam failure occurs, detecting one or more candidate beams, wherein the frequency of each beam in the one or more candidate beams belongs to a first frequency band, and the first A frequency band includes the operating frequency band of the terminal and frequency bands other than the operating frequency band; determining a first beam, where the first beam is one or more beams in the one or more candidate beams; according to the determined first beam One beam, perform beam failure recovery. The embodiments of the present application can reduce the impact of frequency selective fading on beam failure recovery, improve the success rate of beam failure recovery, and further improve the reliability of the communication system.

Description

Method and device for beam failure recovery

technical field

The embodiments of the present application relate to communication technologies, and in particular to a method and device for recovering from beam failure.

Background technique

The working frequency of the fifth generation mobile communication system (5th Generation, 5G) can be as high as tens of GHz. If the high-frequency electromagnetic waves are not transmitted with concentrated energy, the path loss will be very serious. Therefore, the high-frequency signals in 5G can use beamforming (beamforming) technology for transmission. Since the energy of the signal is concentrated in a certain direction, the quality of the original signal beam will deteriorate or even become unusable due to factors such as occlusion during movement. A beam failure recovery procedure is required at this point. Beam failure recovery (beam failure recovery) is a process only when the terminal is in the radio resource control connected (RRCconnected) state after the connection is established.

In the prior art, when the terminal performs beam failure recovery, sometimes no suitable candidate beams can be detected and recovery cannot be performed.

Contents of the invention

The embodiment of the present application provides a method and device for beam failure recovery, so that the terminal detects candidate beams in the working frequency band and frequency bands other than the working frequency band, which can reduce the impact of frequency selective fading on beam failure recovery and improve beam failure recovery The success rate, thereby improving the reliability of the communication system.

In the first aspect, the embodiment of the present application provides a beam failure recovery method, including:

When a beam failure occurs, detect one or more candidate beams, wherein the frequency of each beam in the one or more candidate beams belongs to a first frequency band, and the first frequency band includes the working frequency band of the terminal and the working A frequency band other than the frequency band; determine a first beam, where the first beam is one or more beams in the one or more candidate beams; perform beam failure recovery according to the determined first beam.

With reference to the first aspect, in a possible implementation manner of the first aspect, the method further includes:

Receive measurement configuration information from a network device, where the measurement configuration information includes first indication information and a measurement object; when the beam failure occurs, according to the first indication information, detect the one or more measurements based on the measurement object candidate beams.

With reference to the first aspect or a possible implementation manner of the first aspect, in another possible implementation manner of the first aspect, the first indication information includes a measurement event type and a measurement event corresponding to the measurement event type event, the measurement event type in the first indication information indicates that the condition triggered by the measurement event is the occurrence of beam failure, the measurement event includes the identifier of the measurement object, and the measurement event is based on the measurement object Processing: when the beam failure occurs, detecting the one or more candidate beams based on the measurement object according to the first indication information includes: when the beam failure occurs, based on the measurement event The measurement object corresponding to the identification included in detects the one or more candidate beams.

With reference to the first aspect or any possible implementation manner of the first aspect, in another possible implementation manner of the first aspect, the method further includes: receiving a beam identifier and a first beam identifier corresponding to the beam identifier quasi-parity information, wherein the first quasi-parity information indicates a beam associated with the beam identifier in the first frequency band.

With reference to the first aspect or any possible implementation manner of the first aspect, in another possible implementation manner of the first aspect, the detecting one or more candidate beams includes: according to the beam identifier and the The first quasi-parity information is used to detect the one or more candidate beams.

With reference to the first aspect or any possible implementation manner of the first aspect, in another possible implementation manner of the first aspect, performing beam failure recovery according to the determined first beam includes: The association relationship between random access resources and synchronization signals in the first frequency band and the first beam determines the random access resources corresponding to the first beam; sending beam failure recovery through the random access resources corresponding to the first beam Request message; receive beam failure recovery response message through control resource set.

With reference to the first aspect or any possible implementation manner of the first aspect, in another possible implementation manner of the first aspect, the first beam carries a synchronization signal, and the determined first beam , performing beam failure recovery, including: determining the random access resource corresponding to the first beam according to the association relationship between the random access resource and the synchronization signal in the first frequency band and the synchronization signal of the first beam; through the The random access resource corresponding to the first beam sends a beam failure recovery request message; receives the beam failure recovery response message through the control resource set.

In combination with the first aspect or any possible implementation of the first aspect, in another possible implementation of the first aspect, when the first beam carries channel state information-reference signals, the method further includes : Determining a synchronization signal associated with the channel state information-reference signal according to the second quasi-parity information and the channel state information-reference signal; wherein, the second quasi-parity information indicates that it is related to the channel state information-reference signal A synchronization signal associated in said first frequency band.

With reference to the first aspect or any possible implementation manner of the first aspect, in another possible implementation manner of the first aspect, performing beam failure recovery according to the determined first beam includes: Determine the random access resource corresponding to the first beam through the association relationship between the random access resource and the synchronization signal in the first frequency band, and the synchronization signal associated with the channel state information-reference signal; The random access resource sends a beam failure recovery request message; the beam failure recovery response message is received through the control resource set.

With reference to the first aspect or any possible implementation manner of the first aspect, in another possible implementation manner of the first aspect, the method further includes: when the first beam is located outside the operating frequency band , receiving a radio resource control message from the network device, where the radio resource control message includes an association relationship between a random access resource outside the working frequency band and a synchronization signal.

With reference to the first aspect or any possible implementation manner of the first aspect, in another possible implementation manner of the first aspect, the method further includes: receiving second indication information from the network device, the The second indication information is used to indicate that the association relationship within the working frequency band is different from the association relationship outside the working frequency band, and the association relationship includes the association relationship between random access resources and synchronization signals; when the first beam is located at the When the working frequency band is outside the working frequency band, receive a radio resource control message from the network device according to the second indication information, where the radio resource control message includes an association relationship between a random access resource outside the working frequency band and a synchronization signal.

With reference to the first aspect or any possible implementation manner of the first aspect, in another possible implementation manner of the first aspect, the method further includes: receiving uplink carrier configuration information from the network device, the The uplink carrier configuration information includes configuration information of at least one second uplink carrier; sending a beam failure recovery request message using one of the at least one second uplink carrier according to the configuration information of the at least one second uplink carrier.

With reference to the first aspect or any possible implementation manner of the first aspect, in another possible implementation manner of the first aspect, the method further includes: receiving uplink carrier configuration information from the network device, the The uplink carrier configuration information includes configuration information of the first uplink carrier and at least one second uplink carrier; according to the quality and quality threshold of the first beam, determine to use the first uplink carrier or the at least one second uplink carrier A second uplink carrier sends a beam failure recovery request message.

In the second aspect, the embodiment of the present application provides a beam failure recovery method, including:

sending measurement configuration information to the terminal, where the measurement configuration information includes first indication information and a measurement object, and the first indication information is used to instruct the terminal when the beam failure occurs, according to the first indication information, based on The measurement object detects the one or more candidate beams; and receives a beam recovery request message sent by the terminal, where the beam recovery request message is used for beam failure recovery.

With reference to the second aspect, in a possible implementation manner of the second aspect, the first indication information includes a measurement event type and a measurement event corresponding to the measurement event type, and the measurement event in the first indication information The type is used to indicate that a condition triggered by the measurement event is when a beam failure occurs, the measurement event includes the identifier of the measurement object, and the measurement event is to perform measurement processing based on the measurement object.

In the third aspect, the embodiment of the present application provides a beam failure recovery method, including:

sending a beam identifier and first quasi-parity information corresponding to the beam identifier to the terminal, where the first quasi-parity information indicates a beam associated with the beam identifier in the first frequency band, the beam identifier and The first quasi-parity information is used by the terminal to detect one or more candidate beams; and a beam recovery request message sent by the terminal is received, and the beam recovery request message is used for beam failure recovery.

With reference to the third aspect, in a possible implementation manner of the third aspect, the receiving the beam recovery request message sent by the terminal includes: receiving the beam failure recovery request message through the random access resource corresponding to the first beam, The first beam is one or more beams in the one or more candidate beams.

With reference to the third aspect or a possible implementation manner of the third aspect, in another possible implementation manner of the third aspect, the method further includes: The beam is used to carry the physical downlink control channel; and the beam failure recovery response message is sent to the terminal.

With reference to the third aspect or any possible implementation manner of the third aspect, in another possible implementation manner of the third aspect, sending second indication information to the terminal, where the second indication information is used to indicate the The association relationship within the working frequency band is different from the association relationship outside the working frequency band, the association relationship includes the association relationship between random access resources and synchronization signals; sending a radio resource control message to the terminal, the radio resource control message includes The association relationship between random access resources outside the operating frequency band and synchronization signals.

In the fourth aspect, the embodiment of the present application provides a method for beam failure recovery, including:

Sending uplink carrier configuration information to the terminal, where the uplink carrier configuration information includes configuration information of at least one second uplink carrier, and the uplink carrier configuration information is used by the terminal to use the at least one second uplink carrier according to the configuration information of the at least one second uplink carrier. One second uplink carrier in one second uplink carrier sends a beam failure recovery request message.

In the fifth aspect, the embodiment of the present application provides a method for beam failure recovery, including:

sending uplink carrier configuration information to the terminal, where the uplink carrier configuration information includes configuration information about a first uplink carrier and at least one second uplink carrier, where the uplink carrier configuration information is used by the terminal according to the quality and The quality threshold is determined to use one of the first uplink carrier or the at least one second uplink carrier to send the beam failure recovery request message.

In a sixth aspect, an embodiment of the present application provides a device that can be deployed in a terminal, and the device has a function of implementing the behavior of the first aspect or any possible implementation manner of the first aspect. This function may be implemented by hardware, or may be implemented by executing corresponding software on the hardware. The hardware or software includes one or more modules corresponding to the above functions.

In the seventh aspect, the embodiment of the present application provides a device that can be deployed in a terminal, and the device includes: a processor, a memory, a bus, and a communication interface; the memory is used to store computer-executable instructions, and the processor and the memory pass through The bus is connected, and when the device is running, the processor executes the computer-executable instructions stored in the memory, so that the device executes the first aspect or the method described in any one of the first aspects.

In the eighth aspect, the embodiment of the present application provides a computer-readable storage medium, which is used to store computer software instructions used by the above-mentioned terminal, and when it is run on a computer, the computer can execute the above-mentioned first aspect or the first aspect any one of the methods described.

In the ninth aspect, the embodiment of the present application provides a computer program product containing instructions, which, when run on a computer, enables the computer to execute the method described in the first aspect or any one of the first aspect.

In the tenth aspect, the embodiment of the present application provides a device that can be deployed in network equipment, and the device has the ability to realize the second aspect or any one of the second aspect, the third aspect or any one of the third aspect, and the fourth aspect Aspect or function of the behavior of the fifth aspect. This function may be implemented by hardware, or may be implemented by executing corresponding software on the hardware. The hardware or software includes one or more modules corresponding to the above functions.

In the eleventh aspect, the embodiment of the present application provides a device that can be deployed in a network device, and the device includes: a processor, a memory, a bus, and a communication interface; the memory is used to store computer-executable instructions, and the processor and the The memory is connected through the bus, and when the device is running, the processor executes the computer-executed instructions stored in the memory, so that the device performs the second aspect or any one of the second aspect, the third aspect or any one of the third aspect. One, the method described in the fourth aspect or the fifth aspect.

In the twelfth aspect, the embodiment of the present application provides a computer-readable storage medium, which is used to store computer software instructions used by the above-mentioned network equipment, and when it is run on a computer, the computer can execute the above-mentioned second aspect or the first Any one of the two aspects, the third aspect or any one of the third aspect, the fourth aspect or the method described in the fifth aspect.

In the thirteenth aspect, the embodiment of the present application provides a computer program product containing instructions, which, when run on a computer, enables the computer to execute any one of the second aspect or the second aspect, the third aspect, or the third aspect. Aspect any one, the method described in the fourth aspect or the fifth aspect.

In the method and device for beam failure recovery according to the embodiments of the present application, when a beam failure occurs, the terminal detects one or more candidate beams and determines a first beam, and the first beam is one of the one or more candidate beams or multiple beams, the terminal performs beam failure recovery according to the determined first beam. Since the frequency of each beam in the one or more candidate beams belongs to the first frequency band, the first frequency band includes the working frequency band of the terminal and the frequency bands outside the working frequency band, that is, the terminal is between the working frequency band and the working frequency band. Detecting candidate beams outside the frequency band can reduce the impact of frequency selective fading on beam failure recovery, improve the success rate of beam failure recovery, and improve the reliability of the communication system.

Description of drawings

In the following, a brief introduction will be made to the drawings that need to be used in the description of the embodiments or the prior art.

Fig. 1 is the frame diagram of the communication system involved in the present application;

FIG. 2 is a schematic diagram of a configuration of the BWP of the present application;

FIG. 3 is a flow chart of a method for beam failure recovery according to the present application;

FIG. 4 is a flow chart of another method for beam failure recovery according to the present application;

FIG. 5 is a flow chart of another method for beam failure recovery according to the present application;

FIG. 6 is a flowchart of another method for beam failure recovery according to the present application;

FIG. 7A is a schematic diagram of an application scenario of the present application;

FIG. 7B is a flow chart of another beam failure recovery method of the present application;

FIG. 7C is a flow chart of another method for beam failure recovery according to the present application;

FIG. 8 is a schematic structural diagram of a device provided by an embodiment of the present application;

Fig. 9 is a schematic structural diagram of a device provided by another embodiment of the present application;

FIG. 10 is a schematic structural diagram of a chip provided by an embodiment of the present application;

Fig. 11 is a schematic structural diagram of a device provided by an embodiment of the present application;

Fig. 12 is a schematic structural diagram of a device provided by another embodiment of the present application;

FIG. 13 is a schematic structural diagram of a chip provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

FIG. 1 is a block diagram of a communication system involved in the present application. The beam failure recovery method provided in this application is applicable to the communication system shown in FIG. 1 , such as LTE system, new radio (NR, new radio) system, etc., and may also be other communication systems in the future, which is not limited here. As shown in Fig. 1, the communication system includes: network equipment and terminals.

The method involved in this embodiment of the present application may be performed by a communication device. The communication device may be located in a base station, such as a processing chip in the base station, or the communication device may be located in a terminal, such as a processing chip in the terminal.

Wherein, the network device: may be a base station, or an access point, or may refer to a device in an access network that communicates with a wireless terminal through one or more sectors on an air interface. The base station can be used to convert received over-the-air frames to and from IP packets, acting as a router between the wireless terminal and the rest of the access network, which can include an Internet Protocol (IP) network. The base station may also coordinate attribute management for the air interface. For example, the base station may be a base station (Base Transceiver Station, BTS) in Global System of Mobile communication (GSM) or Code Division Multiple Access (CDMA), or it may be a wideband code division multiple access (Wideband A base station (NodeB, NB) in Code Division Multiple Access, WCDMA), or an evolved base station (Evolutional Node B, eNB or eNodeB) in Long Term Evolution (Long Term Evolution, LTE), or a relay station or an access point, Or the base station (gNB) in the 5G network, etc., are not limited here.

Terminal: It can be a wireless terminal or a wired terminal. A wireless terminal can be a device that provides voice and/or other business data connectivity to users, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. The wireless terminal can communicate with one or more core networks via the radio access network (Radio Access Network, RAN), and the wireless terminal can be a mobile terminal, such as a mobile phone (or called a "cellular" phone) and a computer with a mobile terminal , for example, may be portable, pocket, handheld, computer built-in, or vehicle-mounted mobile devices that exchange voice and/or data with the radio access network. For example, Personal Communication Service (Personal Communication Service, PCS) phone, cordless phone, Session Initiation Protocol (Session Initiation Protocol, SIP) phone, Wireless Local Loop (Wireless Local Loop, WLL) station, Personal Digital Assistant (Personal Digital Assistant, PDA) and other equipment. Wireless terminal can also be called system, subscriber unit (Subscriber Unit), subscriber station (Subscriber Station), mobile station (Mobile Station), mobile station (Mobile), remote station (RemoteStation), remote terminal (Remote Terminal), access A terminal (Access Terminal), a user terminal (UserTerminal), a user agent (User Agent), and a user device (User Device or User Equipment) are not limited herein.

The "first frequency band" involved in this application may specifically include the working frequency band of the terminal and frequency bands other than the working frequency band, wherein the working frequency band of the terminal may include one or more partial bandwidths (Bandwidth Part, BWP), and the working frequency band of the terminal Bands outside may include one or more BWPs.

The "BWP" involved in this application specifically means that a network device can divide its own broadband carrier into multiple BWPs, and different parameter sets (numerology) can be used to transmit data with terminals on different BWPs. Figure 2 is a schematic diagram of a configuration of the BWP of the present application. The vertical direction of Figure 2 is the frequency axis. The device has the same large bandwidth, so the network device can individually configure and schedule the active BWP for each terminal. For example, the terminal may not always need large-bandwidth data transmission. Supporting the terminal to work only on part of the bandwidth of the network device will prolong the battery life of the terminal (power saving), and the radio frequency device with large bandwidth is expensive, so some terminals The ability of the network device cannot support the same large bandwidth as the network device (that is, it is limited by the terminal capability). For the above reasons, the network device can configure the BWP of the terminal through the radio resource control (Radio Resource Control, RRC) message (the diagonal BWP in the figure ), and then use the Media Access Control Control Element (Medium Access Control Control Element, MAC CE) or downlink control information (Downlink Control Information, DCI) to control the terminal to activate a part of it (the BWP with vertical stripes in the figure). For a terminal in the initial state (idle), it will be on a default BWP during initial access, and at the same time, the terminal on this BWP can detect synchronization signals and broadcast signals, such as the BWP indicated by the synchronization signal and broadcast signal in the figure. In a broadband cell, in addition to the random access resources of the BWP used for initial access, there are physical random access channel (Physical Random Access Channel, PRACH) resources on other BWPs, which are used for random access other than initial access. into the process.

That is, the working frequency band of the terminal of the present application may include the BWP with vertical stripes as shown in FIG. Any frequency band, including BWPs other than the BWP with vertical stripes in the BWP of the terminal as shown in FIG. 2 , and BWPs other than the BWP with diagonal stripes in the BWP of the network device.

The "beam failure" involved in this application specifically refers to that the MAC layer of the terminal receives the beam failure instance (beam failure instance) reported by the PHY layer for N consecutive periods, and then determines the beam failure (beam failure), and the MAC layer of the terminal can report to The RRC layer reports beam failure. Wherein, the beam failure instance (beam failure instance) is when the terminal determines that the physical downlink control channel block error rate (PDCCH BLER) of all signals in the reference signal set (for example, including up to 8 reference signals) pre-configured by the network device is greater than the preset value , for example, 10%, the information reported by the PHY layer of the terminal to the MAC layer. Wherein, the reporting period may be the minimum period of the aforementioned reference signal.

It should be noted that the determination condition of "beam failure" in the present application may also be other conditions, which are not limited in this embodiment of the present application.

Fig. 3 is a flowchart of a method for recovering from beam failure according to the present application. As shown in Fig. 3, the method of this embodiment may include:

Step 101. When a beam failure occurs, the terminal detects one or more candidate beams.

Wherein, the frequency of each beam in the one or more candidate beams belongs to a first frequency band, and the first frequency band includes an operating frequency band of the terminal and frequency bands other than the operating frequency band. That is, the terminal can detect candidate beams in the working frequency band and frequency bands other than the working frequency band.

In a possible implementation manner, the first frequency band may specifically be the BWP of the terminal as shown in FIG. The first frequency band may also be the BWP of the terminal and the BWP of the network device except the slanted BWP; the first frequency band may also be the frequency band of the cell where the terminal resides or accesses. It should be noted that this is only an example, not a limitation.

Specifically, when the beam used to carry the Physical Downlink Control Channel (PDCCH) fails, that is, when the network device cannot normally send downlink control information to the terminal through the PDCCH, the terminal detects one or more candidate beams to The beam used to carry the PDCCH is restored, so that the network device normally sends downlink control information to the terminal through the PDCCH. The frequency of each beam among the one or more candidate beams detected by the terminal belongs to the first frequency band, that is, the frequency of a beam may belong to the working frequency band of the terminal, or may belong to a frequency band other than the working frequency band of the terminal.

Wherein, an optional manner of detecting one or more candidate beams is to detect synchronization signals or channel state information-reference signals of one or more candidate beams.

Step 102, the terminal determines a first beam, where the first beam is one or more beams in the one or more candidate beams.

Specifically, the terminal may determine the first beam according to the detected detection results of one or more candidate beams, for example, may determine the first beam according to the quality of synchronization signals or channel state information-reference signals of one or more candidate beams.

Step 103, the terminal performs beam failure recovery according to the determined first beam.

Among them, in one possible way, the terminal can determine the random access resource corresponding to the first beam according to the association relationship between the random access resource and the synchronization signal in the first frequency band and the first beam; the terminal uses the second The random access resource corresponding to a beam sends a beam failure recovery request message to the network device, and the network device receives the beam failure recovery request message sent by the terminal, and determines the first beam according to the random access resource that sends the beam failure recovery request message. The quality of the terminal is the best, and the same or similar parameters are selected according to the parameters of the first beam to restore the beam used to bear the PDCCH. The terminal monitors the control resource set (Control-resource set, CORESET) and receives the beam failure recovery response message sent by the network device, so as to realize beam failure recovery. The parameters may include Doppler spread, Doppler frequency shift, average delay and so on. The set of control resources may be configured by the network device to the terminal.

In another possible way, the terminal sends a beam failure recovery request message to the network device through the grant-free resource or random access resource on the BWP where the first beam is located, and the network device receives the beam failure message sent by the terminal. Recovery request message, and according to the grant-free resource or random access resource that sends the beam failure recovery request message, determine that the first beam has the best quality for the terminal, and then select the same or similar parameters according to the first beam parameters to restore the beam used to bear the PDCCH. The terminal monitors the set of control resources and receives the beam failure recovery response message sent by the network device, thereby realizing beam failure recovery.

In this embodiment, when a beam failure occurs, the terminal detects one or more candidate beams, and determines the first beam, and the first beam is one or more beams in the one or more candidate beams, and the terminal according to the The determined first beam performs beam failure recovery. Since the frequency of each beam in the one or more candidate beams belongs to the first frequency band, the first frequency band includes the working frequency band of the terminal and the frequency bands outside the working frequency band, that is, the terminal is between the working frequency band and the working frequency band. Detecting candidate beams outside the frequency band can reduce the impact of frequency selective fading on beam failure recovery, improve the success rate of beam failure recovery, and improve the reliability of the communication system.

The technical solution of the method embodiment shown in FIG. 3 will be described in detail below using several specific embodiments.

FIG. 4 is a flow chart of another method for beam failure recovery of the present application. As shown in FIG. 4, the method of this embodiment may include:

Step 201, the network device sends measurement configuration information to the terminal.

Correspondingly, the terminal receives measurement configuration information from the network device, where the measurement configuration information includes first indication information and a measurement object. The first indication information is used to instruct the terminal to detect one or more candidate beams based on the measurement object when a beam failure occurs. That is, the network device configures one or more measurement objects to the terminal, and the condition for the terminal to start measurement of the one or more measurement objects is: beam failure occurs. That is, the measurement object may be a measurement object used for beam failure recovery.

Wherein, the measurement object may include a measurement object identifier (ID), a time-frequency resource location (such as a frequency point, a bandwidth), and an antenna logical port, and the like.

Specifically, the measurement configuration information may be sent through an RRC message.

Step 202: When the beam failure occurs, the terminal detects the one or more candidate beams based on the measurement object according to the first indication information.

Specifically, when the beam failure occurs, the terminal detects one or more candidate beams according to the first indication information, for example, the candidate beam can be determined according to the position of the time-frequency resource in the measurement object and the logical port of the antenna, wherein one One or more candidate beams can be used for the terminal to receive the channel state information-reference signal (CSI-RS) or synchronization signal (SS) sent by the network device according to the measurement object, and the beam used to carry the CSI-RS or RS is the candidate Beam refers to the signal strength distribution formed in space after the signal is transmitted through the antenna.

Step 203, the terminal determines a first beam, where the first beam is one or more beams in the one or more candidate beams.

Specifically, the terminal may determine the first beam according to the detected detection results of one or more candidate beams. For example, the terminal can measure the quality of one or more received CSI-RS or RS, determine the quality of the corresponding candidate beam according to the quality of one or more CSI-RS or RS, and can select the candidate beam with better quality as the first a beam.

Step 204, the terminal performs beam failure recovery according to the determined first beam.

Wherein, for the specific explanation of step 204, reference may be made to step 103 in the embodiment shown in FIG. 3 , which will not be repeated here.

A specific implementable manner of the above measurement configuration information, the measurement configuration information includes a measurement event type and a measurement event corresponding to the measurement event type, and the measurement event type in the first indication information is used to indicate that the measurement A condition for event triggering is that a beam failure occurs, the measurement event includes the identifier of the measurement object, and the measurement event indicates that a measurement process is performed based on the measurement object, and the identifier in the measurement event is used to indicate that in the When a measurement event is triggered, one or more candidate beams are detected based on the measurement object. Correspondingly, in a specific implementable manner of the above step 202, when the beam failure occurs, the measurement event is triggered according to the type of the measurement event, based on the measurement event corresponding to the identifier in the measurement event The subject detects the one or more candidate beams.

Wherein, the MAC layer of the terminal can use the above-mentioned "beam failure" judgment method to determine the occurrence of beam failure, and report the occurrence of beam failure to the RRC layer, and the RRC layer triggers the measurement event and activates the measurement object corresponding to the measurement event Measurement. When the measurement event is triggered, the terminal performs one or more candidate beams according to the measurement object corresponding to the identifier in the measurement event. It can be understood that the measurement event may only include the ID of the measurement object, and the terminal acquires the measurement object corresponding to the ID according to the ID of the measurement object, and detects one or more candidate beams based on the measurement object.

The above-mentioned implementation of detecting one or more candidate beams based on the measurement object may be to receive the channel state information of one or more candidate beams at the corresponding position according to the time-frequency resource position (such as frequency point, bandwidth) and antenna logical port parameters - Reference signal (CSI-RS) or synchronization signal (SS).

Wherein, the beam currently used above specifically refers to a beam used to bear a downlink control channel in a downlink direction.

In this embodiment, the network device sends measurement configuration information to the terminal. The measurement configuration information includes first indication information and a measurement object. When the beam failure occurs, the terminal detects the first indication information based on the measurement object. The one or more candidate beams determine a first beam, and the first beam is one or more beams in the one or more candidate beams, and the terminal performs beam failure recovery according to the determined first beam . Since the frequency of each beam in the one or more candidate beams belongs to the first frequency band, the first frequency band includes the working frequency band of the terminal and the frequency bands outside the working frequency band, that is, the terminal is between the working frequency band and the working frequency band. Detecting candidate beams outside the frequency band can reduce the impact of frequency selective fading on beam failure recovery, improve the success rate of beam failure recovery, and improve the reliability of the communication system.

FIG. 5 is a flow chart of another method for beam failure recovery of the present application. As shown in FIG. 5, the method of this embodiment may include:

Step 301. The network device sends a beam identifier and first quasi-parity information corresponding to the beam identifier to the terminal.

Correspondingly, the terminal receives the beam identifier sent by the network device and first quasi-co-location (quasi-co-location, QCL) information corresponding to the beam identifier, where the first quasi-co-location information indicates associated beams in the first frequency band.

Wherein, the beam identifier may include one or more beam identifiers, and the beam identifier may specifically be the time index or CSI-RS identifier of the SS, that is, the network device may send one or more time indexes or CSI-RS identifiers of the SS to the terminal, and First quasi-parity information corresponding to the time index of the SS or the CSI-RS identifier.

The first quasi-parity information corresponding to the time index or CSI-RS identifier of the SS in this embodiment may indicate a beam associated with the time index or CSI-RS identifier of the SS, and the frequency of the associated beam may belong to the working frequency band, It may also belong to a frequency band other than the operating frequency band. Specifically, for example, the first quasi-parity information may include the time index of the SS and the CSI-RS identifier, which means that the SS corresponding to the time index of the SS and the CSI-RS corresponding to the CSI-RS identifier are in a QCL relationship, wherein the network The device sends the CSI-RS to the terminal through the beam, that is, the beam corresponding to the CSI-RS, which can be called the beam associated with the CSI-RS identifier. The beam associated with the CSI-RS identifier is used to send the CSI-RS corresponding to the CSI-RS identifier. RS. The beam associated with the CSI-RS identifier and the beam associated with the time index of the SS are spatially consistent, for example, the beam directions of the two are consistent.

Specifically, the network device may send the foregoing beam identifier and the first quasi-parity information corresponding to the beam identifier to the terminal through a transmission configuration indicator (Transmission Configuration Indicator, TCI). Optionally, the TCI may also carry the time-frequency resource position of the beam, for example, bandwidth, port, etc., which are used to distinguish different beams and measure physical parameters of the CSI-RS or SS.

Step 302. When a beam failure occurs, detect the one or more candidate beams according to the beam identifier and the first quasi-parity information.

Specifically, when a beam failure occurs, the terminal may detect the one or more candidate beams according to the beam identifier in the above steps and the first quasi-parity information corresponding to the beam identifier. For example, the beam identifier includes CSI-RS 1 and CSI-RS 2, CSI-RS 1 and SS 1 have a QCL relationship, and CSI-RS 2 and SS 2 have a QCL relationship, wherein the candidate beam corresponding to CSI-RS 1 The frequency of the candidate beam corresponding to CSI-RS 2 belongs to the working frequency band, the frequency of the candidate beam corresponding to CSI-RS 2 belongs to the frequency band outside the working frequency band, the frequency of the candidate beam corresponding to SS 1 belongs to the working frequency band, and the frequency of the candidate beam corresponding to SS 2 belongs to the working frequency band The terminal can measure CSI-RS 1, CSI-RS 2, SS 1 and SS 2 to detect one or more candidate beams.

The above-mentioned terminals measure CSI-RS 1, CSI-RS 2, SS 1 and SS 2, which may be in sequence. One possible way is that the terminal first detects the candidate beams in the working frequency band, that is, it can first measure the above-mentioned CSI-RS 1 and SS 1 perform measurements to detect candidate beams in the working frequency band. When no suitable candidate beams are detected, for example, the quality of the candidate beams in the working frequency band is poor, the terminal can check the above CSI-RS 2 , SS 2 perform measurement to detect candidate beams outside the working frequency band. Of course, it can be understood that the embodiment of the present application is not limited thereto.

Step 303, the terminal determines a first beam, where the first beam is one or more beams in the one or more candidate beams.

Step 304, the terminal performs beam failure recovery according to the determined first beam.

For the specific explanation of the above step 303 and step 304, please refer to the above step 102 and step 103, which will not be repeated here.

In this embodiment, the network device sends the beam identifier and the first quasi-parity information corresponding to the beam identifier to the terminal. When a beam failure occurs, the beam identifier and the first quasi-parity information are used to detect the one or multiple candidate beams, determining a first beam, where the first beam is one or more beams in the one or more candidate beams, and the terminal performs beam failure recovery according to the determined first beams. Since the frequency of each beam in the one or more candidate beams belongs to the first frequency band, the first frequency band includes the working frequency band of the terminal and the frequency bands outside the working frequency band, that is, the terminal is between the working frequency band and the working frequency band. Detecting candidate beams outside the frequency band can reduce the impact of frequency selective fading on beam failure recovery, improve the success rate of beam failure recovery, and improve the reliability of the communication system.

Moreover, detecting candidate beams through the first quasi-parity information can improve the efficiency of beam failure recovery.

FIG. 6 is a flow chart of another beam failure recovery method of the present application. As shown in FIG. 6 , in this embodiment, the terminal in any of the above embodiments performs a beam failure recovery according to the determined first beam. A specific implementable manner is explained, and the method of this embodiment may include:

Step 401, the terminal determines the random access resource corresponding to the first beam according to the association relationship between the random access resource and the synchronization signal in the first frequency band and the first beam.

Wherein, the first beam carries a synchronization signal or a channel state information-reference signal.

Specifically, in any of the foregoing embodiments, the terminal may determine the first beam according to detected detection results of one or more candidate beams. For example, the terminal can measure the quality of the received CSI-RS or RS of one or more candidate beams, and determine the quality of the corresponding candidate beam according to the quality of the CSI-RS or RS of one or more candidate beams. A good candidate beam is used as the first beam. That is, the network device sends the CSI-RS or RS to the terminal through the candidate beam. It can be understood that the candidate beam carries the CSI-RS or RS, and the terminal measures the quality of the CSI-RS or RS to determine the first beam. After the first beam is determined, the terminal determines the random access resource corresponding to the first beam. Specifically, the network device can configure the association relationship between the random access resource and the synchronization signal in the first frequency band for the terminal, and the terminal The relationship determines the random access resource corresponding to the first beam.

The association relationship between the random access resource and the synchronization signal in the first frequency band may specifically be configured to the terminal through a radio resource control message.

In an achievable manner, the first beam carries a synchronization signal, and the terminal searches for and obtains the random access resource corresponding to the synchronization signal in the association relationship, and the random access resource corresponding to the synchronization signal is the corresponding resource of the first beam. Random access to resources.

In another possible implementation manner, the first beam carries the channel state information-reference signal, and the terminal determines the synchronization signal associated with the channel state information-reference signal according to the second quasi-parity information and the channel state information-reference signal, The random access resource corresponding to the first beam is determined according to the association relationship between the random access resource and the synchronization signal in the first frequency band, and the synchronization signal associated with the channel state information-reference signal.

Wherein, the second quasi-parity information indicates a synchronization signal associated with the channel state information-reference signal in the first frequency band.

It should be noted that the second quasi-parity information can also be carried in the above TCI, the form of the second quasi-parity information and the first quasi-parity information can be the same, the difference between the two lies in their different functions, wherein the first The quasi-parity information is used to detect candidate beams, and the second quasi-parity information is used to determine a random access resource corresponding to the first beam.

The random access resources may be contention-based random access resources or non-contention-based random access resources.

Step 402, the terminal sends a beam failure recovery request message through the random access resource corresponding to the first beam.

Correspondingly, the network device receives the beam failure recovery request message sent by the terminal through the random access resource corresponding to the first beam.

Wherein, the beam failure recovery request message may carry information such as an identifier of the terminal, whether a candidate beam exists, and the like.

Step 403 , the network device determines a restored beam used to bear the physical downlink control channel according to the random access resource corresponding to the first beam.

Specifically, the network device determines that the quality of the first beam is the best for the terminal according to the random access resource that sends the beam failure recovery request message, and then selects the same or similar parameters according to the parameters of the first beam to restore the PDCCH used to carry the PDCCH. beam.

Step 404, the network device sends a beam failure recovery response message to the terminal.

Correspondingly, the terminal receives the beam failure recovery response message sent by the network device by monitoring the control-resource set (CORESET).

In some embodiments, the association relationship within the operating frequency band is different from the association relationship outside the operating frequency band, and the association relationship includes an association relationship between random access resources and synchronization signals. The network device may also send second indication information to the terminal, where the second indication information is used to indicate that the association relationship within the working frequency band is different from the association relationship outside the working frequency band. When the first beam is located outside the working frequency band, the terminal receives a radio resource control message from the network device according to the second indication information, and the radio resource control message includes random access outside the working frequency band The relationship between resources and synchronization signals.

Wherein, the second indication information may specifically be sent through an RRC message.

In this embodiment, when a beam failure occurs, the terminal detects one or more candidate beams and determines the first beam. The first beam is one or more beams in the one or more candidate beams. The association relationship between the input resource and the synchronization signal in the first frequency band and the first beam determines the random access resource corresponding to the first beam, and the terminal sends a beam failure recovery request through the random access resource corresponding to the first beam message, the network device determines a recovery beam used to bear the physical downlink control channel according to the random access resource corresponding to the first beam, and the network device sends a beam failure recovery response message, thereby implementing beam recovery. Since the frequency of each beam in the one or more candidate beams belongs to the first frequency band, the first frequency band includes the working frequency band of the terminal and the frequency bands outside the working frequency band, that is, the terminal is between the working frequency band and the working frequency band. Detecting candidate beams outside the frequency band can reduce the impact of frequency selective fading on beam failure recovery, improve the success rate of beam failure recovery, and improve the reliability of the communication system.

FIG. 7A is a schematic diagram of an application scenario of the present application. As shown in FIG. 7A, when NR deploys a high-frequency cell, due to the high operating frequency band of NR and the low transmit power of the terminal, the terminal in the edge area of the cell, as shown in FIG. For a terminal in an area other than the uplink carrier (UL) in NR, the terminal can receive the signal sent by the network device, but the network device cannot receive the signal sent by the terminal, that is, there is a problem of asymmetric uplink and downlink coverage. In order to solve this problem, another low-frequency band (such as the frequency band of LTE) is introduced to assist the terminal in uplink transmission. The carrier of this low-frequency band can be called a supplementary uplink carrier (Supplementary uplink carrier, SUL). The terminal can pass NR UL and SUL performs uplink transmission. As shown in Figure 7A, the cell has one downlink carrier and two uplink carriers (NR UL and SUL). In the embodiment of this application, NR UL is called the first uplink carrier, and SUL is called the second uplink carrier. It should be noted that the SUL shown in FIG. 7A is only an example, and the SUL may include multiple SULs, that is, the cell includes multiple second uplink carriers.

Fig. 7B is a flow chart of another beam failure recovery method of the present application. This embodiment explains the specific sending method of the beam recovery request message in the above-mentioned application scenario of Fig. 7A, as shown in Fig. 7B, this embodiment Example methods include:

Step 501, the network device sends uplink carrier configuration information to the terminal.

Correspondingly, the terminal receives uplink carrier configuration information from the network device, where the uplink carrier configuration information includes configuration information of at least one second uplink carrier.

Wherein, the uplink carrier configuration information may be sent through an RRC message.

Step 502, the terminal sends a beam failure recovery request message using one of the at least one second uplink carriers according to the configuration information of the at least one second uplink carrier.

Correspondingly, the network device receives the beam failure recovery request message sent by the terminal through a second uplink carrier. Since the frequency of the second uplink carrier is lower, compared with the first uplink carrier, when the terminal uses the same transmit power, the beam failure recovery request message sent by using the second uplink carrier can be transmitted farther and more reliably. high.

In this embodiment, the network device sends uplink carrier configuration information to the terminal, the uplink carrier configuration information includes configuration information of at least one second uplink carrier, and the terminal uses the at least one second uplink carrier according to the configuration information of the at least one second uplink carrier. A second uplink carrier in the uplink carrier sends the beam failure recovery request message, that is, sends the beam failure recovery request message through the second uplink carrier, which can improve the reliability of the communication system.

Fig. 7C is a flow chart of another beam failure recovery method of the present application. This embodiment explains the specific sending method of the beam recovery request message in the above-mentioned application scenario of Fig. 7A, as shown in Fig. 7C, this embodiment Example methods include:

Step 601, the network device sends uplink carrier configuration information to the terminal.

Correspondingly, receiving uplink carrier configuration information from the network device, where the uplink carrier configuration information includes configuration information of a first uplink carrier and at least one second uplink carrier.

Step 602, the terminal determines to use the first uplink carrier or one of the at least one second uplink carrier to send a beam failure recovery request message according to the quality of the first beam and the quality threshold.

Wherein, the quality threshold can be obtained through a system message of the cell, or can be obtained through an RCC message sent by a network device, and it can be flexibly set according to requirements.

In an implementable manner, the terminal compares the quality of the first beam with the quality threshold, and when the quality of the first beam is greater than the quality threshold, the terminal uses the first uplink carrier to send a beam recovery request message. When the quality of the first beam is less than or equal to the quality threshold, the terminal uses a second uplink carrier to send a beam restoration request message.

Wherein, the above-mentioned quality may be Reference Signal Received Power (Reference Signal Receiving Power, RSRP), may also be Reference Signal Received Quality (Reference Signal Receiving Quality, RSRQ), may also be a parameter Signal Interfernece Noise Ratio (Signal Interfernece Noise Ratio, SINR), of course, can also be other measurement quantities, which are not illustrated here one by one.

In this embodiment, the network device sends uplink carrier configuration information to the terminal, the uplink carrier configuration information includes configuration information of the first uplink carrier and at least one second uplink carrier, and the terminal determines the use of The first uplink carrier or one of the at least one second uplink carrier sends a beam failure recovery request message, that is, the terminal selects the first uplink carrier or the second uplink carrier according to the quality of the first beam and fails to send the beam The recovery request message can improve the reliability of the communication system.

It can be understood that, in the foregoing embodiments, the methods or steps implemented by the terminal may also be implemented by a chip inside the terminal. The methods or steps implemented by the network equipment may also be implemented by chips inside the network equipment.

FIG. 8 is a schematic structural diagram of a device provided by an embodiment of the present application. The device can be deployed in a terminal. As shown in FIG. 8 , the device in this embodiment includes: a processing module 401 . The processing module 401 is configured to detect one or more candidate beams when a beam failure occurs, where the frequency of each beam in the one or more candidate beams belongs to a first frequency band, and the first frequency band includes the terminal The working frequency band and frequency bands other than the working frequency band; the processing module 401 is further configured to determine a first beam, where the first beam is one or more beams in the one or more candidate beams; The processing module 401 is further configured to perform beam failure recovery according to the determined first beam.

In some embodiments, the apparatus further includes: a receiving module 402; the processing module 401 receives measurement configuration information from a network device through the receiving module 402, and the measurement configuration information includes first indication information and a measurement object; The processing module 401 is configured to detect the one or more candidate beams based on the measurement object according to the first indication information when the beam failure occurs.

In some embodiments, the first indication information includes a measurement event type and a measurement event corresponding to the measurement event type, and the measurement event type in the first indication information indicates that the condition triggered by the measurement event is a beam failure occurs, the measurement event includes the identity of the measurement object, and the measurement event is to perform measurement processing based on the measurement object; the processing module 401 is configured to: when the beam failure occurs, based on the measurement event The measurement object corresponding to the included identifier detects the one or more candidate beams.

In some embodiments, the receiving module 402 is configured to receive a beam identifier and first quasi-parity information corresponding to the beam identifier, wherein the first quasi-parity information indicates that the beam identifier is in the first frequency band Associated beams.

In some embodiments, the processing module 401 is configured to: detect the one or more candidate beams according to the beam identifier and the first quasi-parity information.

In some embodiments, the apparatus further includes a sending module 403, and the processing module 401 is configured to: determine the first The random access resource corresponding to the beam; controlling the sending module 403 to send a beam failure recovery request message through the random access resource corresponding to the first beam; controlling the receiving module 402 to receive a beam failure recovery response message through the control resource set.

In some embodiments, the processing module 401 is further configured to, when the first beam carries a channel state information-reference signal, determine the channel state according to the second quasi-parity information and the channel state information-reference signal A synchronization signal associated with an information-reference signal; wherein, the second quasi-parity information indicates a synchronization signal associated with the channel state information-reference signal in the first frequency band.

In some embodiments, the processing module 401 is configured to: determine the first beam according to the association relationship between the random access resource and the synchronization signal in the first frequency band, and the synchronization signal associated with the channel state information-reference signal The corresponding random access resource: sending a beam failure recovery request message through the random access resource corresponding to the first beam; receiving a beam failure recovery response message through the control resource set.

In some embodiments, the receiving module 402 is further configured to: when the first beam is located outside the working frequency band, receive a radio resource control message from the network device, the radio resource control message includes the The association relationship between random access resources outside the working frequency band and synchronization signals.

In some embodiments, the receiving module 402 is further configured to: receive second indication information from the network device, where the second indication information is used to indicate that the association relationship within the working frequency band is different from the association relationship outside the working frequency band. The association relationship is different, and the association relationship includes the association relationship between random access resources and synchronization signals; the processing module 401 is configured to, when the first beam is located outside the working frequency band, use the receiving module 402 from the The network device receives a radio resource control message, where the radio resource control message includes an association relationship between a random access resource outside the operating frequency band and a synchronization signal.

In some embodiments, the receiving module 402 is configured to receive uplink carrier configuration information from the network device, where the uplink carrier configuration information includes configuration information of at least one second uplink carrier; the processing module 401 transmits Module 403 uses one of the at least one second uplink carriers to send a beam failure recovery request message according to the configuration information of the at least one second uplink carrier.

In some embodiments, the receiving module 402 is configured to receive uplink carrier configuration information from the network device, where the uplink carrier configuration information includes configuration information of a first uplink carrier and at least one second uplink carrier; the processing module 401 is further configured to use the sending module 403 to determine to use the first uplink carrier or one of the at least one second uplink carrier to send a beam failure recovery request message according to the quality of the first beam and the quality threshold .

The above-mentioned devices in this embodiment can be used to implement the technical solutions implemented by the terminal/terminal chip in the above-mentioned method embodiments. The implementation principle and technical effect are similar, and the functions of each module can refer to the corresponding descriptions in the method embodiments. , which will not be repeated here.

FIG. 9 is a schematic structural diagram of a device provided by another embodiment of the present application. As shown in FIG. 9 , the device of this embodiment can be deployed in a terminal, and the device includes: a transceiver 411 and a processor 412 .

In terms of hardware implementation, the above receiving module 402 and sending module 403 may be the transceiver 411 in this embodiment. Alternatively, the transceiver 411 includes a receiver and a transmitter, then the above receiving module 402 may be a receiver in the transceiver 411 , and the above sending module 403 may be a transmitter in the transceiver 411 . The above processing module 401 may be embedded in or independent from the processor 412 of the terminal in the form of hardware.

The transceiver 411 may include necessary radio frequency communication devices such as a mixer. The processor 412 may include a central processing unit (Central Processing Unit, CPU), a digital signal processor (digital signal processor, DSP), a microcontroller (Microcontroller Unit, MCU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC) or At least one of Field Programmable Gate Arrays (Field-Programmable Gate Array, FPGA).

Optionally, the terminal in this embodiment may further include a memory 413, the memory 413 is used to store program instructions, and the processor 412 is used to call the program instructions in the memory 413 to execute the above solution.

The program instructions can be implemented in the form of software functional units and can be sold or used as an independent product, and the memory 413 can be any form of computer-readable storage medium. Based on this understanding, all or part of the technical solutions of the present application can be embodied in the form of software products, including several instructions to enable a computer device, specifically the processor 412, to execute the terminal in each embodiment of the present application. all or part of the steps. The aforementioned computer-readable storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc., which can store programs. The medium of the code.

The device described above in this embodiment can be used to implement the technical solutions implemented by the terminal/terminal chip in the above method embodiments. Its implementation principle and technical effect are similar, and the functions of each device can refer to the corresponding methods in the method embodiments. description and will not be repeated here.

FIG. 10 is a schematic structural diagram of a chip provided by an embodiment of the present application. As shown in FIG. 10 , the chip of this embodiment may be used as a terminal chip, and the chip of this embodiment may include: a memory 421 and a processor 422 . The memory 421 is in communication connection with the processor 422 .

In terms of hardware implementation, the above receiving module 402 , processing module 401 and sending module 403 may be embedded in or independent of the processor 422 of the chip in the form of hardware.

Wherein, the memory 421 is used for storing program instructions, and the processor 422 is used for calling the program instructions in the memory 421 to execute the above solution.

The chip described above in this embodiment can be used to implement the technical solutions of the terminal or its internal chip in the above-mentioned method embodiments of the present application. The implementation principle and technical effect are similar, and the functions of each module can refer to the corresponding description, which will not be repeated here.

FIG. 11 is a schematic structural diagram of a device provided by an embodiment of the present application. The device can be deployed in a network device. As shown in FIG. 11 , the device of this embodiment includes: a sending module 501 and a receiving module 502 . Wherein, the sending module 501 is configured to send measurement configuration information to the terminal, the measurement configuration information includes first indication information and a measurement object, and the first indication information is used to instruct the terminal when the beam failure occurs, According to the first indication information, the one or more candidate beams are detected based on the measurement object; the receiving module 502 is configured to receive a beam restoration request message sent by the terminal, and the beam restoration request message is used to perform beam restoration Failed recovery.

In some embodiments, the apparatus may further include a processing module 503, configured to generate the measurement configuration information.

In some embodiments, the first indication information includes a measurement event type and a measurement event corresponding to the measurement event type, and the measurement event type in the first indication information is used to indicate that the condition for triggering the measurement event is When a beam failure occurs, the measurement event includes the identifier of the measurement object, and the measurement event is to perform measurement processing based on the measurement object.

The device described above in this embodiment can be used to implement the technical solution implemented by the chip of the network device/network device in the above method embodiment in Figure 3 or Figure 4, its implementation principle and technical effect are similar, and the functions of each module can refer to the method Corresponding descriptions in the embodiments will not be repeated here.

The device provided in another embodiment of the present application may adopt the same structure as that shown in FIG. 11 , the sending module is configured to send the beam identifier and the first quasi-parity information corresponding to the beam identifier to the terminal, wherein the first The quasi-parity information indicates a beam associated with the beam identifier in the first frequency band, and the beam identifier and the first quasi-parity information are used by the terminal to detect one or more candidate beams; the receiving module is configured to receiving a beam recovery request message sent by the terminal, where the beam recovery request message is used for beam failure recovery.

In some embodiments, the receiving module is configured to: receive a beam failure recovery request message through a random access resource corresponding to a first beam, where the first beam is one or more of the one or more candidate beams beam.

In some embodiments, the processing module is configured to determine the beam used to bear the physical downlink control channel according to the random access resource corresponding to the first beam; the sending module is further configured to send a beam failure recovery to the terminal Respond to the message.

The device described above in this embodiment can be used to implement the technical solution implemented by the chip of the network device/network device in the above method embodiment in Figure 5 or Figure 6. Its implementation principle and technical effect are similar, and the functions of each module can refer to the method Corresponding descriptions in the embodiments will not be repeated here.

The device provided in another embodiment of the present application may adopt the same structure as that shown in FIG. 11 , and the sending module is used to send uplink carrier configuration information to the terminal, the uplink carrier configuration information includes configuration information of at least one second uplink carrier, so The uplink carrier configuration information is used by the terminal to send a beam failure recovery request message using one of the at least one second uplink carriers according to the configuration information of the at least one second uplink carrier.

The device described above in this embodiment can be used to implement the technical solution implemented by the chip of the network device/network device in the method embodiment in Figure 7B above. Its implementation principle and technical effect are similar, and the functions of each module can refer to the method embodiment. Corresponding descriptions will not be repeated here.

The device provided in another embodiment of the present application may adopt the same structure as that shown in FIG. 11 , and the sending module is used to send uplink carrier configuration information to the terminal, and the uplink carrier configuration information includes a first uplink carrier and at least one second uplink carrier Configuration information of the uplink carrier, the uplink carrier configuration information is used by the terminal to determine to use the first uplink carrier or one second uplink of the at least one second uplink carrier according to the quality and quality threshold of the first beam The carrier sends a beam failure recovery request message.

The device described above in this embodiment can be used to implement the technical solution implemented by the chip of the network device/network device in the method embodiment in Figure 7C above. Its implementation principle and technical effect are similar, and the functions of each module can refer to the method embodiment. Corresponding descriptions will not be repeated here.

FIG. 12 is a schematic structural diagram of an apparatus provided by another embodiment of the present application. The apparatus can be deployed in a network device. As shown in FIG. 12 , the apparatus of this embodiment includes: a transceiver 511 and a processor 512 .

In terms of hardware implementation, the above receiving module 502 and sending module 501 may be the transceiver 511 in this embodiment. Alternatively, the transceiver 511 includes a receiver and a transmitter, then the above receiving module 502 may be a receiver in the transceiver 511 , and the above sending module 501 may be a transmitter in the transceiver 511 . The above processing module 503 may be embedded in hardware or independent of the processor 512 of the network device.

The transceiver 511 may include necessary radio frequency communication devices such as a mixer. The processor 512 may include a central processing unit (Central Processing Unit, CPU), a digital signal processor (digital signal processor, DSP), a microcontroller (Microcontroller Unit, MCU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC) or At least one of Field Programmable Gate Arrays (Field-Programmable Gate Array, FPGA).

Optionally, the device in this embodiment may further include a memory 513, the memory 513 is used to store program instructions, and the processor 512 is used to call the program instructions in the memory 513 to execute the above solution.

The program instructions can be implemented in the form of software functional units and can be sold or used as an independent product, and the memory 513 can be any form of computer-readable storage medium. Based on this understanding, all or part of the technical solutions of the present application can be embodied in the form of software products, including several instructions to enable a computer device, specifically the processor 512, to execute the network All or part of the steps of the device. The aforementioned computer-readable storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc., which can store programs. The medium of the code.

The device described above in this embodiment can be used to implement the technical solutions implemented by the network device/chip of the network device in the above method embodiments. Its implementation principle and technical effect are similar, and the functions of each device can refer to the method embodiments. Corresponding descriptions will not be repeated here.

FIG. 13 is a schematic structural diagram of a chip provided by an embodiment of the present application. As shown in FIG. 13 , the chip of this embodiment can be used as a chip of a network device, and the chip of this embodiment can include: a memory 521 and a processor 522 . The memory 521 communicates with the processor 522.

In terms of hardware implementation, the above receiving module 502, processing module 503 and sending module 501 may be embedded in or independent of the processor 522 of the chip in the form of hardware.

Wherein, the memory 521 is used for storing program instructions, and the processor 522 is used for calling the program instructions in the memory 521 to execute the above solution.

The chip described above in this embodiment can be used to implement the technical solutions of the network device or its internal chip in the above-mentioned method embodiments of the present application. Its implementation principle and technical effect are similar, and the functions of each module can refer to the method embodiments. Corresponding descriptions will not be repeated here.

It should be noted that the division of modules in the embodiment of the present application is schematic, and is only a logical function division, and there may be other division methods in actual implementation. Each functional module in the embodiment of the present application may be integrated into one processing module, each module may exist separately physically, or two or more modules may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules.

If the integrated modules are realized in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or part of the contribution to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: various media capable of storing program codes such as U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk.

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server, or data center by wired (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media. The available media may be magnetic media (eg, floppy disk, hard disk, magnetic tape), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), etc.

Claims (32)

1. A method for beam failure recovery, comprising: When a beam failure occurs, detect one or more candidate beams, wherein the frequency of each beam in the one or more candidate beams belongs to a first frequency band, and the first frequency band includes the working frequency band of the terminal and the working frequency bands other than the frequency band; determining a first beam, where the first beam is one or more of the one or more candidate beams; Perform beam failure recovery according to the determined first beam. 2. The method according to claim 1, characterized in that the method further comprises: receiving measurement configuration information from a network device, where the measurement configuration information includes first indication information and a measurement object; The first indication information includes a measurement event type and a measurement event corresponding to the measurement event type, the measurement event type in the first indication information indicates that a condition triggered by the measurement event is beam failure, and the measurement event It includes the identifier of the measurement object, and the measurement event is to perform measurement processing based on the measurement object. 3. The method according to claim 2, wherein when the beam failure occurs, detecting the one or more candidate beams comprises: When the beam failure occurs, the one or more candidate beams are detected based on the measurement object corresponding to the identifier in the measurement event. 4. The method according to claim 1, further comprising: receiving a beam identifier and first quasi-parity information corresponding to the beam identifier, where the first quasi-parity information indicates a beam associated with the beam identifier in the first frequency band. 5. The method according to claim 4, wherein the detecting one or more candidate beams comprises: Detecting the one or more candidate beams according to the beam identifier and the first quasi-parity information. 6. The method according to any one of claims 1 to 5, wherein the first beam carries a synchronization signal, and performing beam failure recovery according to the determined first beam includes: determining the random access resource corresponding to the first beam according to the association relationship between the random access resource and the synchronization signal in the first frequency band and the synchronization signal of the first beam; sending a beam failure recovery request message through the random access resource corresponding to the first beam; The beam failure recovery response message is received through the set of control resources. 7. The method according to any one of claims 1 to 5, wherein the first beam bears channel state information-reference signal, and the method further comprises: determining a synchronization signal associated with the channel state information-reference signal according to the second quasi-parity information and the channel state information-reference signal; Wherein, the second quasi-parity information indicates a synchronization signal associated with the channel state information-reference signal in the first frequency band. 8. The method according to claim 7, wherein the performing beam failure recovery according to the determined first beam comprises: Determine the random access resource corresponding to the first beam according to the association relationship between the random access resource and the synchronization signal in the first frequency band, and the synchronization signal associated with the channel state information-reference signal; sending a beam failure recovery request message through the random access resource corresponding to the first beam; The beam failure recovery response message is received through the set of control resources. 9. The method according to any one of claims 6 to 8, wherein the method further comprises: When the first beam is located outside the working frequency band, receive a radio resource control message from the network device, where the radio resource control message includes an association relationship between a random access resource outside the working frequency band and a synchronization signal . 10. The method according to any one of claims 1 to 5, characterized in that the method further comprises: receiving uplink carrier configuration information from the network device, where the uplink carrier configuration information includes configuration information of at least one second uplink carrier; Sending a beam failure recovery request message by using one of the at least one second uplink carriers according to the configuration information of the at least one second uplink carrier. 11. The method according to any one of claims 1 to 5, characterized in that the method further comprises: receiving uplink carrier configuration information from the network device, where the uplink carrier configuration information includes configuration information of a first uplink carrier and at least one second uplink carrier; According to the quality of the first beam and the quality threshold, determine to use the first uplink carrier or one second uplink carrier of the at least one second uplink carrier to send a beam failure recovery request message. 12. A method for beam failure recovery, comprising: sending measurement configuration information to the terminal, where the measurement configuration information includes first indication information and a measurement object, and the first indication information is used to instruct the terminal when the beam failure occurs, according to the first indication information, based on the measurement object detects the one or more candidate beams; receiving a beam recovery request message sent by the terminal, where the beam recovery request message is used for beam failure recovery. 13. The method according to claim 12, wherein the first indication information includes a measurement event type and a measurement event corresponding to the measurement event type, and the measurement event type in the first indication information is used for A condition indicating that the measurement event is triggered is when a beam failure occurs, the measurement event includes the identifier of the measurement object, and the measurement event is to perform measurement processing based on the measurement object. 14. A method for beam failure recovery, comprising: sending a beam identifier and first quasi-parity information corresponding to the beam identifier to the terminal, where the first quasi-parity information indicates a beam associated with the beam identifier in the first frequency band, the beam identifier and The first quasi-parity information is used by the terminal to detect one or more candidate beams; receiving a beam recovery request message sent by the terminal, where the beam recovery request message is used for beam failure recovery. 15. The method according to any one of claims 12 to 14, wherein the receiving the beam restoration request message sent by the terminal comprises: The beam failure recovery request message is received by using the random access resource corresponding to the first beam, where the first beam is one or more beams in the one or more candidate beams. 16. The method of claim 15, further comprising: determining a beam used to bear a physical downlink control channel according to the random access resource corresponding to the first beam; Sending a beam failure recovery response message to the terminal. 17. A device, characterized in that it comprises: A processing module, configured to detect one or more candidate beams when a beam failure occurs, wherein the frequency of each beam in the one or more candidate beams belongs to a first frequency band, and the first frequency band includes the terminal's working Frequency bands and frequency bands outside of said operating frequency band; The processing module is further configured to determine a first beam, where the first beam is one or more beams in the one or more candidate beams; The processing module is further configured to perform beam failure recovery according to the determined first beam. 18. The device according to claim 17, further comprising: a receiving module; The processing module receives measurement configuration information from a network device through the receiving module, where the measurement configuration information includes first indication information and a measurement object; The first indication information includes a measurement event type and a measurement event corresponding to the measurement event type, the measurement event type in the first indication information indicates that a condition triggered by the measurement event is beam failure, and the measurement event It includes the identifier of the measurement object, and the measurement event is to perform measurement processing based on the measurement object. 19. The device according to claim 18, wherein the processing module is configured to: when the beam failure occurs, detect the one based on the measurement object corresponding to the identifier in the measurement event or multiple candidate beams. 20. The device according to claim 17, further comprising: a receiving module; The processing module receives a beam identifier and first quasi-parity information corresponding to the beam identifier through the receiving module, wherein the first quasi-parity information indicates a frequency associated with the beam identifier in the first frequency band beam. 21. The device according to claim 20, wherein the processing module is used for: Detecting the one or more candidate beams according to the beam identifier and the first quasi-parity information. 22. The device according to any one of claims 17 to 21, wherein the device further comprises a receiving module and a sending module, and the processing module is used for: determining the random access resource corresponding to the first beam according to the association relationship between the random access resource and the synchronization signal in the first frequency band and the synchronization signal of the first beam; controlling the sending module to send a beam failure recovery request message through the random access resource corresponding to the first beam; Controlling the receiving module to receive the beam failure recovery response message through the control resource set. 23. The device according to any one of claims 17 to 21, wherein the processing module is also used for when the first beam carries channel state information-reference signal, according to the second quasi-parity information and the The channel state information-reference signal determines a synchronization signal associated with the channel state information-reference signal; Wherein, the second quasi-parity information indicates a synchronization signal associated with the channel state information-reference signal in the first frequency band. 24. The device according to claim 23, wherein the processing module is configured to: according to the association relationship between the random access resource and the synchronization signal in the first frequency band, and the channel state information-reference signal associated The synchronization signal determines the random access resource corresponding to the first beam; sending a beam failure recovery request message through the random access resource corresponding to the first beam; The beam failure recovery response message is received through the set of control resources. 25. The device according to any one of claims 22 to 24, wherein the receiving module is further configured to: when the first beam is located outside the operating frequency band, receive a radio signal from the network device A resource control message, where the radio resource control message includes an association relationship between random access resources outside the operating frequency band and synchronization signals. 26. The device according to any one of claims 17 to 21, further comprising: a receiving module and a sending module; The receiving module is configured to receive uplink carrier configuration information from the network device, where the uplink carrier configuration information includes configuration information of at least one second uplink carrier; The processing module uses the sending module to send a beam failure recovery request message using one of the at least one second uplink carriers according to the configuration information of the at least one second uplink carrier. 27. The device according to any one of claims 17 to 21, further comprising: a receiving module and a sending module; The receiving module is configured to receive uplink carrier configuration information from the network device, where the uplink carrier configuration information includes configuration information of a first uplink carrier and at least one second uplink carrier; The processing module is further configured to, through the sending module, determine to use the first uplink carrier or a second uplink carrier in the at least one second uplink carrier to send the beam according to the quality of the first beam and the quality threshold Failed recovery request message. 28. A device, characterized in that it comprises: A sending module, configured to send measurement configuration information to the terminal, where the measurement configuration information includes first indication information and a measurement object, and the first indication information is used to instruct the terminal to perform according to the first beam failure when the beam failure occurs. Indication information for detecting the one or more candidate beams based on the measurement object; The receiving module is configured to receive a beam restoration request message sent by the terminal, where the beam restoration request message is used for beam failure restoration. 29. The device according to claim 28, wherein the first indication information includes a measurement event type and a measurement event corresponding to the measurement event type, and the measurement event type in the first indication information is used for A condition indicating that the measurement event is triggered is when a beam failure occurs, the measurement event includes the identifier of the measurement object, and the measurement event is to perform measurement processing based on the measurement object. 30. A device, characterized in that it comprises: A sending module, configured to send a beam identifier and first quasi-parity information corresponding to the beam identifier to the terminal, where the first quasi-parity information indicates a beam associated with the beam identifier in the first frequency band, The beam identifier and the first quasi-parity information are used by the terminal to detect one or more candidate beams; The receiving module is configured to receive a beam restoration request message sent by the terminal, where the beam restoration request message is used for beam failure restoration. 31. The device according to any one of claims 28 to 30, wherein the receiving module is used for: The beam failure recovery request message is received by using the random access resource corresponding to the first beam, where the first beam is one or more beams in the one or more candidate beams. 32. The device according to claim 31, further comprising: a processing module; The processing module is configured to determine a beam for carrying a physical downlink control channel according to the random access resource corresponding to the first beam; The sending module is further configured to send a beam failure recovery response message to the terminal.