CN110167203B

CN110167203B - Beam failure recovery method and device

Info

Publication number: CN110167203B
Application number: CN201810145954.XA
Authority: CN
Inventors: 袁世通; 曾清海; 张希; 李铕; 严乐
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-02-12
Filing date: 2018-02-12
Publication date: 2023-07-28
Anticipated expiration: 2038-02-12
Also published as: CN110167203A

Abstract

The embodiment of the application provides a method and a device for recovering beam failure. The method for recovering the beam failure comprises the following steps: detecting one or more candidate beams when 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 comprises an operating frequency band of a terminal and a frequency band outside the operating frequency band; determining a first beam, the first beam being one or more of the one or more candidate beams; and carrying out beam failure recovery according to the determined first beam. The embodiment of the application can reduce the influence of frequency selective fading on beam failure recovery, improve the success rate of beam failure recovery, and further improve the reliability of a communication system.

Description

Beam failure recovery method and device

Technical Field

Embodiments of the present application relate to communication technologies, and in particular, to a method and an apparatus for beam failure recovery.

Background

The fifth generation mobile communication system (5th Generation,5G) can have an operating frequency as high as several tens of GHz, and the path loss is very serious if the high frequency electromagnetic waves are not transmitted in an energy-concentrated manner, so that the high frequency signals in the 5G can be transmitted by using beamforming (beamforming) technology. Because the energy of the signal is concentrated in a certain direction, the original signal beam quality can be deteriorated or even not usable due to factors such as shielding during movement. At this point a beam failure recovery procedure is required. Beam failure recovery (beam failure recovery) is a procedure that is unique to a terminal in a radio resource control connected (RRC connected) state after connection establishment.

In the prior art, a terminal performs beam failure recovery, and sometimes cannot detect a suitable candidate beam, so that the beam cannot be recovered.

Disclosure of Invention

The embodiment of the application provides a method and a device for recovering beam failure, which are used for realizing detection of candidate beams by a terminal in a working frequency band and a frequency band outside the working frequency band, reducing the influence of frequency selective fading on the recovery of the beam failure, improving the success rate of the recovery of the beam failure, and further improving the reliability of a communication system.

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

detecting one or more candidate beams when 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 comprises an operating frequency band of a terminal and a frequency band outside the operating frequency band; determining a first beam, the first beam being one or more of the one or more candidate beams; and carrying out 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:

receiving measurement configuration information from a network device, the measurement configuration information including first indication information and a measurement object; and detecting the one or more candidate beams based on the measurement object according to the first indication information when the beam failure occurs.

With reference to the first aspect or one 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, a measurement event type in the first indication information indicates that a condition triggered by the measurement event is that a beam failure occurs, the measurement event includes an identification of the measurement object, and the measurement event is that measurement processing is performed based on the measurement object; the detecting, when the beam failure occurs, the one or more candidate beams based on the measurement object according to the first indication information, including: and detecting the one or more candidate beams based on the measurement object corresponding to the identification included in the measurement event when the beam failure occurs.

With reference to the first aspect or any one of the possible implementation manners of the first aspect, in another possible implementation manner of the first aspect, the method further includes: a beam identification and first quasi co-location information corresponding to the beam identification are received, wherein the first quasi co-location information indicates a beam associated with the beam identification in the first frequency band.

With reference to the first aspect or any one of the possible implementation manners of the first aspect, in another possible implementation manner of the first aspect, the detecting one or more candidate beams includes: and detecting the one or more candidate beams according to the beam identification and the first quasi co-location information.

With reference to the first aspect or any one of the possible implementation manners of the first aspect, in another possible implementation manner of the first aspect, the performing beam failure recovery according to the determined first beam includes: determining a random access resource corresponding to the first wave beam according to the association relation between the random access resource and the synchronous signal in the first frequency band and the first wave beam; transmitting a beam failure recovery request message through a random access resource corresponding to the first beam; the beam failure recovery response message is received by controlling the set of resources.

With reference to the first aspect or any one of possible implementation manners of the first aspect, in another possible implementation manner of the first aspect, the first beam carries a synchronization signal, and performing beam failure recovery according to the determined first beam includes: determining a random access resource corresponding to the first wave beam according to the association relation between the random access resource and the synchronous signal in the first frequency band and the synchronous signal of the first wave beam; transmitting a beam failure recovery request message through a random access resource corresponding to the first beam; the beam failure recovery response message is received by controlling the set of resources.

With reference to the first aspect or any one of the possible implementation manners of the first aspect, in another possible implementation manner of the first aspect, when the first beam carries a channel state information-reference signal, the method further includes: determining a synchronization signal associated with the channel state information-reference signal based on second quasi co-located information and the channel state information-reference signal; wherein the second quasi co-located information indicates a synchronization signal associated with the channel state information-reference signal in the first frequency band.

With reference to the first aspect or any one of the possible implementation manners of the first aspect, in another possible implementation manner of the first aspect, the performing beam failure recovery according to the determined first beam includes: determining a random access resource corresponding to the first wave beam according to the association relation between the random access resource and the synchronous signal in the first frequency band and the synchronous signal associated with the channel state information-reference signal; transmitting a beam failure recovery request message through a random access resource corresponding to the first beam; the beam failure recovery response message is received by controlling the set of resources.

With reference to the first aspect or any one of the possible implementation manners of the first aspect, in another possible implementation manner of the first aspect, the method further includes: and when the first beam is located outside the working frequency band, receiving a radio resource control message from the network equipment, wherein the radio resource control message comprises the association relation between random access resources outside the working frequency band and synchronous signals.

With reference to the first aspect or any one of the possible implementation manners of the first aspect, in another possible implementation manner of the first aspect, the method further includes: receiving second indication information from the network equipment, wherein the second indication information is used for indicating that the association relationship in the working frequency band is different from the association relationship outside the working frequency band, and the association relationship comprises the association relationship between random access resources and synchronous signals; and when the first beam is located outside the working frequency band, receiving a radio resource control message from the network equipment according to the second indication information, wherein the radio resource control message comprises the association relation between random access resources outside the working frequency band and the synchronous signals.

With reference to the first aspect or any one of the possible implementation manners 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, wherein the uplink carrier configuration information comprises configuration information of at least one second uplink carrier; and transmitting a beam failure recovery request message by using one second uplink carrier in 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 one of the possible implementation manners 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, wherein the uplink carrier configuration information comprises configuration information of a first uplink carrier and at least one second uplink carrier; and determining to use one second uplink carrier in the first uplink carrier or the at least one second uplink carrier to send a beam failure recovery request message according to the quality and the quality threshold of the first beam.

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

transmitting measurement configuration information to a terminal, wherein the measurement configuration information comprises first indication information and a measurement object, the first indication information is used for indicating the terminal to detect one or more candidate beams based on the measurement object according to the first indication information when the beam failure occurs; and receiving a beam restoration request message sent by the terminal, wherein the beam restoration request message is used for carrying out beam failure restoration.

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, where the measurement event type in the first indication information is used to indicate that a condition triggered by the measurement event is that a beam failure occurs, the measurement event includes an identification of the measurement object, and the measurement event is measurement processing based on the measurement object.

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

transmitting a beam identification and first quasi co-location information corresponding to the beam identification to a terminal, wherein the first quasi co-location information indicates a beam associated with the beam identification in the first frequency band, and the beam identification and the first quasi co-location information are used for detecting one or more candidate beams by the terminal; and receiving a beam restoration request message sent by the terminal, wherein the beam restoration request message is used for carrying out beam failure restoration.

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

With reference to the third aspect or one possible implementation manner of the third aspect, in another possible implementation manner of the third aspect, the method further includes: determining a beam for bearing a physical downlink control channel according to the random access resource corresponding to the first beam; and sending a beam failure recovery response message to the terminal.

With reference to the third aspect or any one of possible implementation manners of the third aspect, in another possible implementation manner of the third aspect, sending second indication information to a terminal, where the second indication information is used to indicate that an association relationship in the working frequency band is different from an association relationship outside the working frequency band, where the association relationship includes an association relationship between a random access resource and a synchronization signal; and sending a radio resource control message to the terminal, wherein the radio resource control message comprises the association relation between the random access resources outside the working frequency band and the synchronous signals.

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

and sending uplink carrier configuration information to the terminal, wherein the uplink carrier configuration information comprises configuration information of at least one second uplink carrier, and the uplink carrier configuration information is used for sending a beam failure recovery request message by the terminal according to the configuration information of the at least one second uplink carrier by using one second uplink carrier in the at least one second uplink carrier.

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

and sending uplink carrier configuration information to a terminal, wherein the uplink carrier configuration information comprises configuration information of a first uplink carrier and at least one second uplink carrier, and the uplink carrier configuration information is used for determining that the terminal uses one second uplink carrier in the first uplink carrier or the at least one second uplink carrier to send a beam failure recovery request message according to the quality and the quality threshold of the first beam.

In a sixth aspect, an embodiment of the present application provides an apparatus, where the apparatus may be deployed on a terminal, where the apparatus has a function of implementing the foregoing first aspect or a behavior of any one of the possible implementation manners of the first aspect. The functions can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a seventh aspect, an embodiment of the present application provides an apparatus, where the apparatus may be deployed on a terminal, the apparatus includes: a processor, a memory, a bus, and a communication interface; the memory is configured to store computer-executable instructions, the processor being coupled to the memory via the bus, the processor executing the computer-executable instructions stored in the memory when the apparatus is operated to cause the apparatus to perform the method according to the first aspect or any one of the first aspects.

In an eighth aspect, embodiments of the present application provide a computer readable storage medium storing computer software instructions for use with the above-described terminal, which when run on a computer, cause the computer to perform the method of the above-described first aspect or any one of the first aspects.

In a ninth aspect, embodiments of the present application provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the first aspect or any one of the first aspects.

In a tenth aspect, embodiments of the present application provide an apparatus, where the apparatus may be deployed on a network device, and the apparatus has a function of implementing the foregoing second aspect or any one of the second aspect, the third aspect or any one of the third aspect, the fourth aspect or the fifth aspect. The functions can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In an eleventh aspect, embodiments of the present application provide an apparatus, where the apparatus may be deployed in a network device, the apparatus including: a processor, a memory, a bus, and a communication interface; the memory is configured to store computer-executable instructions, the processor being coupled to the memory via the bus, the processor executing the computer-executable instructions stored by the memory when the apparatus is operated to cause the apparatus to perform the method of the second aspect or any one of the second aspect, the third aspect or any one of the third aspect, the fourth aspect or the fifth aspect.

In a twelfth aspect, embodiments of the present application provide a computer readable storage medium storing computer software instructions for use with a network device as described above, which when run on a computer, cause the computer to perform the method of the second aspect or any one of the third aspect, the fourth aspect or the fifth aspect described above.

In a thirteenth aspect, embodiments of the present application provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the second or any of the second, third or any of the third, fourth or fifth aspects described above.

When the beam failure occurs, the terminal detects one or more candidate beams, determines a first beam, wherein the first beam is one or more beams among the one or more candidate beams, and performs beam failure recovery according to the determined first beam. Because the frequency of each beam in the one or more candidate beams belongs to a first frequency band, the first frequency band comprises the working frequency band of the terminal and the frequency band outside the working frequency band, namely, the detection of the candidate beams by the terminal in the working frequency band and the frequency band outside the working frequency band is realized, the influence of frequency selective fading on the recovery of the beam failure can be reduced, the success rate of the recovery of the beam failure is improved, and the reliability of a communication system is further improved.

Drawings

The drawings that accompany the detailed description can be briefly described as follows.

Fig. 1 is a block diagram of a communication system according to the present application;

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

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

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

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

FIG. 6 is a flow chart of another method of beam failure recovery of 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 method of beam failure recovery of the present application;

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

FIG. 8 is a schematic structural diagram of an apparatus according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural view of an apparatus according to another embodiment of the present application;

FIG. 10 is a schematic diagram of a chip according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of an apparatus according to an embodiment of the present disclosure;

FIG. 12 is a schematic view of an apparatus according to another embodiment of the present disclosure;

fig. 13 is a schematic structural diagram of a chip according to an embodiment of the present application.

Detailed Description

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

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

The method according to the embodiments of the present application may be performed by a communication device, which may be located in a base station, for example, a processing chip in the base station, or a communication device may be located in a terminal, for example, 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 over the air-interface, through one or more sectors, with wireless terminals. The base station may be configured to inter-convert the received air frames with IP packets as a router between the wireless terminal and the rest of the access network, which may 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 mobile communications (Global System of Mobile communication, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a base station (NodeB, NB) in wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA), an evolved base station (Evolutional Node B, eNB or eNodeB) in long term evolution (Long Term Evolution, LTE), a relay station or access point, or a base station (gNB) in a 5G network, etc., without limitation.

And (3) a terminal: either a wireless terminal, which may be a device that provides voice and/or other traffic data connectivity to a user, a handheld device with wireless connectivity, or other processing device connected to a wireless modem. The wireless terminals may communicate with one or more core networks via a radio access network (Radio Access Network, RAN), which may be mobile terminals such as mobile phones (or "cellular" phones) and computers with mobile terminals, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access network. Such as personal communication services (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiation Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDAs), and the like. A wireless Terminal may also be referred to as a system, subscriber Unit (Subscriber Unit), subscriber Station (Subscriber Station), mobile Station (Mobile Station), mobile Station (Mobile), remote Station (Remote Station), remote Terminal (Remote Terminal), access Terminal (Access Terminal), user Terminal (User Terminal), user Agent (User Agent), user equipment (User Device or User Equipment), without limitation.

The "first frequency band" referred to in the present application may specifically include an operating frequency band of the terminal and a frequency band outside the operating frequency band, where the operating frequency band of the terminal may include one or more partial Bandwidths (BWP), and the frequency band outside the operating frequency band of the terminal may include one or more BWP.

The "BWP" referred to in this application specifically refers to that the network device may divide its own broadband carrier into multiple BWP, and may use different parameter sets (numerology) for data transmission with the terminal on different BWP. Fig. 2 is a schematic diagram of a configuration of BWP of the present application, and the longitudinal direction of fig. 2 is a frequency axis, as shown in fig. 2, where the network device operates on a wide bandwidth, and since the terminal may not need/cannot support the same large bandwidth as the network device, the network device may configure and schedule an active BWP of the terminal for each terminal individually. For example, a terminal may not always need a large bandwidth data transmission, supporting to let the terminal operate only on a part of the bandwidth of the network device, which may extend the battery life (power saving) of the terminal, and a large bandwidth radio frequency device is expensive, so some of the capabilities of the terminal cannot support the same large bandwidth as the network device (i.e. are limited by the terminal capabilities), for which reason the network device may configure the BWP of the terminal (e.g. the BWP of the diagonal in the figure) via radio resource control (Radio Resource Control, RRC) messages, and then control the terminal to activate a part of them (e.g. the BWP of the vertical in the figure) using a medium access control element (Medium Access Control Control Element, MAC CE) or downlink control information (Downlink Control Information, DCI). For an initial state (idle) terminal, initial access is performed on a default BWP, and the BWP terminal may detect a synchronization signal and a broadcast signal, which are referred to as BWP in the figure. In a broadband cell, there are physical random access channel (Physical Random Access Channel, PRACH) resources on other BWPs in addition to the BWP for initial access with random access resources for other random access procedures than initial access.

That is, the operation band of the terminal of the present application may include the BWP of the vertical stripe as shown in fig. 2, and the band other than the operation band of the terminal (the BWP of the vertical stripe as shown in fig. 2) may be any band other than the operation band of the terminal, including the BWP other than the BWP of the vertical stripe in the BWP of the terminal as shown in fig. 2, and the BWP other than the BWP of the diagonal in the BWP of the network device.

The "beam failure" referred to in the present application specifically refers to that, when the MAC layer of the terminal receives the beam failure instance (beam failure instance) reported by the PHY layer for N consecutive periods, the MAC layer of the terminal determines a beam failure (beam failure), and may report the beam failure (beam failure) to the RRC layer. The beam failure instance (beam failure instance) is information reported by the PHY layer of the terminal to the MAC layer when the terminal determines that the physical downlink control channel block error rate (PDCCH BLER) of all signals in a reference signal set (e.g., including at most 8 reference signals) preconfigured by the network device is greater than a preset value, for example, 10%. The reporting period may be the minimum period of the reference signal.

The determination condition of the "beam failure" in the present application may be other conditions, and the embodiment of the present application is not limited thereto.

Fig. 3 is a flowchart of a method for beam failure recovery in the present application, as shown in fig. 3, the method in this embodiment may include:

step 101, when beam failure occurs, the terminal detects one or more candidate beams.

Wherein the frequency of each of the one or more candidate beams belongs to a first frequency band, the first frequency band comprising an operating frequency band of the terminal and a frequency band outside the operating frequency band. I.e. the terminal may detect the candidate beam in the operating frequency band and in a frequency band outside the operating frequency band.

In a possible implementation, the first frequency band may specifically be a BWP of the terminal as shown in fig. 2, i.e. including a BWP activated by the terminal and also including a BWP not activated by the terminal; in yet another possible implementation manner, the first frequency band may also be BWP of the terminal and BWP of the network device other than diagonal BWP; the first frequency band may also be a frequency band of a cell in which the terminal resides or accesses. It should be noted that this is only an example, and is not limited thereto.

Specifically, when a beam failure for carrying a physical downlink control channel (Physical Downlink Control Channel, PDCCH) occurs, 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 recover the beam for carrying the PDCCH, thereby realizing that the network device normally sends the downlink control information to the terminal through the PDCCH. The frequency of each beam in the one or more candidate beams detected by the terminal belongs to a first frequency band, that is, the frequency of one beam may belong to an operating frequency band of the terminal or may belong to a frequency band outside the operating frequency band of the terminal.

An alternative way of detecting one or more candidate beams is to detect a synchronization signal or a channel state information-reference signal of one or more candidate beams.

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

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

And 103, the terminal carries out beam failure recovery according to the determined first beam.

In one implementation manner, a terminal may determine a random access resource corresponding to a first beam according to an association relationship between the random access resource and a synchronization signal in a first frequency band and the first beam; the terminal sends a beam failure recovery request message to the network equipment through the random access resource corresponding to the first beam, the network equipment receives the beam failure recovery request message sent by the terminal, determines that the first beam is best for the terminal quality according to the random access resource sending the beam failure recovery request message, and then selects the same or similar parameters according to the parameters of the first beam to recover the beam used for bearing the PDCCH. The terminal receives a beam failure recovery response message sent by the network device through monitoring a Control-resource set (CORESET), thereby realizing beam failure recovery. The parameters may include doppler spread, doppler shift, average delay, etc. The set of control resources may be configured by the network device to the terminal.

In another implementation manner, the terminal sends a beam failure recovery request message to the network device through a grant-free (grant-free) resource or a random access resource on the BWP where the first beam is located, and the network device receives the beam failure recovery request message sent by the terminal, determines that the first beam is best for the terminal quality according to the grant-free (grant-free) resource or 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 recover the beam used for carrying the PDCCH. And the terminal receives the beam failure recovery response message sent by the network equipment through monitoring the control resource set, thereby realizing beam failure recovery.

In this embodiment, when a beam failure occurs, the terminal detects one or more candidate beams, determines a first beam, where the first beam is one or more beams of the one or more candidate beams, and performs beam failure recovery according to the determined first beam. Because the frequency of each beam in the one or more candidate beams belongs to a first frequency band, the first frequency band comprises the working frequency band of the terminal and the frequency band outside the working frequency band, namely, the detection of the candidate beams by the terminal in the working frequency band and the frequency band outside the working frequency band is realized, the influence of frequency selective fading on the recovery of the beam failure can be reduced, the success rate of the recovery of the beam failure is improved, and the reliability of a communication system is further improved.

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 flowchart of another method for beam failure recovery according to the present application, as shown in fig. 4, the method of the present embodiment may include:

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

Accordingly, the terminal receives measurement configuration information from the network device, the measurement configuration information including the first indication information and the measurement object. The first indication information is used for indicating the terminal to detect one or more candidate beams based on the measurement object when beam failure occurs. That is, the network device configures one or more measurement objects to the terminal, and the conditions for the terminal to initiate measurement of the one or more measurement objects are: beam failure occurs. I.e. the measurement object may be a measurement object for beam failure recovery.

The measurement object may include a measurement object Identification (ID), a time-frequency resource location (e.g., a frequency point, a bandwidth), an antenna logic port, and the like.

The measurement configuration information may be specifically transmitted through an RRC message.

And 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 beams may be determined according to the position of the time-frequency resource in the measurement object and the antenna logic port, where the manner of detecting the one or more candidate beams may be that the terminal receives, according to the channel state information-reference signal (CSI-RS) or Synchronization Signal (SS) sent by the network device according to the measurement object, a beam for carrying the CSI-RS or the RS is the candidate beam, and the beam refers to signal intensity distribution formed in space after the signal is transmitted by the antenna.

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

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

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

The specific explanation of step 204 may refer to step 103 in the embodiment shown in fig. 3, which is not described herein.

In a specific implementation manner of the measurement configuration information, the measurement configuration 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 is used for indicating that a condition triggered by the measurement event is that a beam failure occurs, the measurement event includes an identification of the measurement object, the measurement event represents measurement processing based on the measurement object, and the identification in the measurement event is used for indicating that one or more candidate beams are detected based on the measurement object when the measurement event is triggered. Accordingly, in a specific implementation manner of step 202, when the beam failure occurs, the measurement event is triggered according to the measurement event type, and the one or more candidate beams are detected based on the measurement object corresponding to the identifier in the measurement event.

The MAC layer of the terminal may determine that the beam failure occurs by adopting the above-mentioned "beam failure" determination method, report the beam failure to the RRC layer, trigger the measurement event by the RRC layer, and activate measurement on a measurement object corresponding to the measurement event. And when the measurement event is triggered, the terminal performs one or more candidate beams according to the measurement object corresponding to the identification in the measurement event. It will be appreciated that the measurement event may include only an Identification (ID) of the measurement object, the terminal acquiring the measurement object corresponding to the Identification (ID) from the Identification (ID) of the measurement object, and detecting one or more candidate beams based on the measurement object.

The implementation manner of detecting the one or more candidate beams based on the measurement object may be to receive channel state information-reference signals (CSI-RS) or Synchronization Signals (SS) of the one or more candidate beams at corresponding positions according to parameters such as time-frequency resource positions (e.g., frequency points, bandwidths) and antenna logic ports.

The currently used beam specifically refers to a beam whose downlink direction is used to carry a downlink control channel.

In this embodiment, measurement configuration information is sent to a terminal through a network device, where the measurement configuration information includes first indication information and a measurement object, and 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, determines a first beam, where the first beam is one or more beams of the one or more candidate beams, and performs beam failure recovery according to the determined first beam. Because the frequency of each beam in the one or more candidate beams belongs to a first frequency band, the first frequency band comprises the working frequency band of the terminal and the frequency band outside the working frequency band, namely, the detection of the candidate beams by the terminal in the working frequency band and the frequency band outside the working frequency band is realized, the influence of frequency selective fading on the recovery of the beam failure can be reduced, the success rate of the recovery of the beam failure is improved, and the reliability of a communication system is further improved.

Fig. 5 is a flowchart of another method for beam failure recovery according to the present application, as shown in fig. 5, the method of the present embodiment may include:

step 301, a network device sends a beam identifier to a terminal and first quasi co-location information corresponding to the beam identifier.

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

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

The first quasi co-location information corresponding to the time index or CSI-RS identity of the SS in this embodiment may indicate a beam associated with the time index or CSI-RS identity of the SS, where the frequency of the associated beam may belong to a frequency band within the operating frequency band or may belong to a frequency band outside the operating frequency band. Specifically, for example, the first quasi-parity information may include a relationship between a time index of the SS and a CSI-RS identifier, that is, a CSI-RS corresponding to the SS and the CSI-RS identifier is QCL, where the network device sends the CSI-RS to the terminal through a beam, that is, a beam corresponding to the CSI-RS may be referred to as a beam associated with the CSI-RS identifier, and the beam associated with the CSI-RS identifier is used to send the CSI-RS corresponding to the CSI-RS identifier. The CSI-RS identifies that the associated beam is spatially consistent with the beam associated with the time index of the SS, e.g., the two beam directions are consistent.

Specifically, the network device may send the 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 time-frequency resource locations of the beams, e.g. bandwidths, ports, etc. for distinguishing between different beams and measuring physical parameters of CSI-RS or SS.

Step 302, detecting the one or more candidate beams according to the beam identification and the first quasi co-location information when beam failure occurs.

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

The measurement of CSI-RS 1, CSI-RS 2, SS 1 and SS 2 by the terminal may be sequential, and in one implementation, the terminal may first measure candidate beams in the detection operating frequency band, that is, may first measure the CSI-RS 1 and SS 1, and when no suitable candidate beam is detected, for example, the quality of the candidate beams in the operating frequency band is poor, the terminal may measure the CSI-RS 2 and SS 2, and detect the candidate beams outside the operating frequency band. It will of course be understood that the embodiments of the present application are not so limited.

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

And 304, the terminal recovers the beam failure according to the determined first beam.

The specific explanation of the above steps 303 and 304 may be referred to the above steps 102 and 103, and will not be repeated here.

In this embodiment, a beam identifier and first quasi-parity information corresponding to the beam identifier are sent to a terminal through a network device, when a beam failure occurs, the one or more candidate beams are detected according to the beam identifier and the first quasi-parity information, a first beam is determined, the first beam is one or more of the one or more candidate beams, and the terminal performs beam failure recovery according to the determined first beam. Because the frequency of each beam in the one or more candidate beams belongs to a first frequency band, the first frequency band comprises the working frequency band of the terminal and the frequency band outside the working frequency band, namely, the detection of the candidate beams by the terminal in the working frequency band and the frequency band outside the working frequency band is realized, the influence of frequency selective fading on the recovery of the beam failure can be reduced, the success rate of the recovery of the beam failure is improved, and the reliability of a communication system is further improved.

Moreover, the efficiency of beam failure recovery can be improved by detecting the candidate beams through the first quasi-co-location information.

Fig. 6 is a flowchart of another method for beam failure recovery in the present application, as shown in fig. 6, where a specific implementation manner of beam failure recovery performed by a terminal according to the determined first beam in any of the above embodiments is explained, the method in this embodiment may include:

step 401, a terminal determines a random access resource corresponding to a first beam according to an association relationship between the random access resource and a synchronization signal in a 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 a detection result of the detected one or more candidate beams. For example, the terminal may measure the quality of CSI-RS or RS of the received one or more candidate beams, determine the quality of the corresponding candidate beam according to the quality of CSI-RS or RS of the one or more candidate beams, and may select the candidate beam with the better quality as the first beam. That is, the network device sends the CSI-RS or the RS to the terminal through the candidate beam, which can be understood as that the candidate beam carries the CSI-RS or the RS, and the terminal measures the quality of the CSI-RS or the RS to determine the first beam. After the first beam is determined, the terminal determines a random access resource corresponding to the first beam, specifically, the network device may configure an association relationship between the random access resource and a synchronization signal in the first frequency band to the terminal, and the terminal determines the random access resource corresponding to the first beam according to the association relationship.

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

In one implementation manner, the first beam carries a synchronization signal, and then the terminal searches and acquires a random access resource corresponding to the synchronization signal in the association relationship, where the random access resource corresponding to the synchronization signal is the random access resource corresponding to the first beam.

In another implementation manner, the first beam carries a channel state information-reference signal, and the terminal determines 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, and determines a random access resource corresponding to the first beam according to an 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 co-located 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 co-location information may also be carried in the TCI, and the forms of the second quasi co-location information and the first quasi co-location information may be the same, which are different in function, where the first quasi co-location information is used for detecting the candidate beam, and the second quasi co-location information is used for determining the random access resource corresponding to the first beam.

The random access resource may be a contention-based random access resource or a non-contention random access resource.

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

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

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 recovery beam for carrying the physical downlink control channel according to the random access resource corresponding to the first beam.

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

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 through monitoring a Control-resource set (CORESET).

In some embodiments, the association within the operating frequency band is different from the association outside the operating frequency band, the association including an association of a random access resource with a synchronization signal. The network device may further send second indication information to the terminal, where the second indication information is used to indicate that the association relationship in the working frequency band is different from the association relationship outside the working frequency band. And when the first beam is positioned outside the working frequency band, the terminal receives a radio resource control message from the network equipment according to the second indication information, wherein the radio resource control message comprises the association relation between random access resources outside the working frequency band and the synchronous signals.

The second indication information may be specifically sent through an RRC message.

In this embodiment, when a beam failure occurs, a terminal detects one or more candidate beams, determines a first beam, where the first beam is one or more beams in the one or more candidate beams, determines a random access resource corresponding to the first beam according to an association relationship between a random access resource and a synchronization signal in a first frequency band and the first beam, sends a beam failure recovery request message through the random access resource corresponding to the first beam, and determines a recovery beam for carrying a physical downlink control channel according to the random access resource corresponding to the first beam, where the network device sends a beam failure recovery response message, thereby implementing beam recovery. Because the frequency of each beam in the one or more candidate beams belongs to a first frequency band, the first frequency band comprises the working frequency band of the terminal and the frequency band outside the working frequency band, namely, the detection of the candidate beams by the terminal in the working frequency band and the frequency band outside the working frequency band is realized, the influence of frequency selective fading on the recovery of the beam failure can be reduced, the success rate of the recovery of the beam failure is improved, and the reliability of a communication system is further improved.

Fig. 7A is a schematic diagram of an application scenario in the present application, as shown in fig. 7A, when an NR deploys a high-frequency cell, since an NR operating frequency band is higher and a transmission power of a terminal is lower, a terminal in a cell edge area, such as a terminal in an area other than an NR uplink carrier (UL), may receive a signal sent by a network device, but the network device cannot receive a signal sent by the terminal, that is, there is a problem that uplink and downlink coverage is asymmetric. To solve this problem, another low frequency band (such as the frequency band of LTE) is introduced for assisting the terminal to perform uplink transmission, where the carrier of the low frequency band may be referred to as a supplementary uplink carrier (Supplementary uplink carrier, SUL), and the terminal may perform uplink transmission through an NR UL and a SUL, and the cell has one downlink carrier and two uplink carriers (NR UL and SUL) as shown in fig. 7A, and in this embodiment, the NR UL is referred to as a first uplink carrier, and the SUL is referred to as a second uplink carrier. It should be noted that the SUL shown in fig. 7A is only an example, and the SUL may include a plurality of SULs, that is, the cell includes a plurality of second uplink carriers.

Fig. 7B is a flowchart of another method for beam failure recovery in the present application, and the embodiment explains a specific transmission manner of the beam recovery request message in the application scenario of fig. 7A, as shown in fig. 7B, where the method in the embodiment includes:

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, wherein the uplink carrier configuration information comprises configuration information of at least one second uplink carrier.

The uplink carrier configuration information may be sent through an RRC message.

Step 502, the terminal uses one second uplink carrier in the at least one second uplink carrier to send a beam failure recovery request message 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. Because the frequency of the second uplink carrier is lower, the beam failure recovery request message can be transmitted farther and more reliably by using the second uplink carrier when the terminal uses the same transmission power than the first uplink carrier.

In this embodiment, the network device sends 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 terminal uses one second uplink carrier in the at least one second uplink carrier to send a beam failure recovery request message according to the configuration information of the at least one second uplink carrier, that is, sends the beam failure recovery request message through the second uplink carrier, so that reliability of the communication system can be improved.

Fig. 7C is a flowchart of another method for beam failure recovery in the present application, and the embodiment explains a specific transmission manner of the beam recovery request message in the application scenario of fig. 7A, and as shown in fig. 7C, the method in the present embodiment includes:

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

Correspondingly, uplink carrier configuration information is received from the network device, wherein the uplink carrier configuration information comprises 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 second uplink carrier of the at least one second uplink carrier to send a beam failure recovery request message according to the quality and the quality threshold of the first beam.

The quality threshold may be obtained through a system message of a cell, or may be obtained through an RCC message sent by a network device, which may be flexibly set according to requirements.

In one implementation, 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 sends a beam recovery request message using the first uplink carrier. And when the quality of the first wave beam is less than or equal to the quality threshold, the terminal uses a second uplink carrier to send a wave beam recovery request message.

The quality may be reference signal received power (Reference Signal Receiving Power, RSRP), reference signal received quality (Reference Signal Receiving Quality, RSRQ), or parameter signal-to-interference-and-noise ratio (Signal Interfernece Noise Ratio, SINR), or other measurement values, which are not illustrated herein.

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

It will be appreciated that in the above embodiments, the method or step implemented by the terminal may also be implemented by a chip inside the terminal. The method or steps implemented by the network device may also be implemented by a chip internal to the network device.

Fig. 8 is a schematic structural diagram of an apparatus provided in an embodiment of the present application, where the apparatus may be deployed at a terminal, as shown in fig. 8, and the apparatus 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 a frequency of each of 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 a frequency band outside the operating frequency band; the processing module 401 is further configured to determine a first beam, where the first beam is one or more beams of 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 comprises: a receiving module 402; the processing module 401 receives measurement configuration information from a network device through the receiving module 402, wherein the measurement configuration information comprises first indication information and a measurement object; the processing module 401 is configured to detect, when the beam failure occurs, the one or more candidate beams based on the measurement object according to the first indication information.

In some embodiments, 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 that a beam failure occurs, the measurement event includes an identification of the measurement object, and the measurement event is measurement processing based on the measurement object; the processing module 401 is configured to: and detecting the one or more candidate beams based on the measurement object corresponding to the identification included in the measurement event when the beam failure occurs.

In some embodiments, the receiving module 402 is configured to receive a beam identification and first quasi co-location information corresponding to the beam identification, wherein the first quasi co-location information indicates a beam associated with the beam identification in the first frequency band.

In some embodiments, the processing module 401 is configured to: and detecting the one or more candidate beams according to the beam identification and the first quasi co-location information.

In some embodiments, the apparatus further comprises a sending module 403, and the processing module 401 is configured to: determining a random access resource corresponding to the first wave beam according to the association relation between the random access resource and the synchronous signal in the first frequency band and the first wave beam; controlling the sending module 403 to send a beam failure recovery request message through a random access resource corresponding to the first beam; the receiving module 402 is controlled to receive the beam failure recovery response message by controlling the set of resources.

In some embodiments, when the first beam carries a channel state information-reference signal, the processing module 401 is further configured to determine a synchronization signal associated with the channel state information-reference signal according to second quasi-parity information and the channel state information-reference signal; wherein the second quasi co-located 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: determining a random access resource corresponding to the first wave beam according to the association relation between the random access resource and the synchronous signal in the first frequency band and the synchronous signal associated with the channel state information-reference signal; transmitting a beam failure recovery request message through a random access resource corresponding to the first beam; the beam failure recovery response message is received by controlling the set of resources.

In some embodiments, the receiving module 402 is further configured to: and when the first beam is located outside the working frequency band, receiving a radio resource control message from the network equipment, wherein the radio resource control message comprises the association relation between random access resources outside the working frequency band and synchronous signals.

In some embodiments, the receiving module 402 is further configured to: receiving second indication information from the network equipment, wherein the second indication information is used for indicating that the association relationship in the working frequency band is different from the association relationship outside the working frequency band, and the association relationship comprises the association relationship between random access resources and synchronous signals; the processing module 401 is configured to receive, when the first beam is located outside the operating frequency band, a radio resource control message from the network device through the receiving module 402, 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 sends, through the sending module 403, 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.

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 determine, by using the sending module 403, to send a beam failure recovery request message by using the first uplink carrier or one of the at least one second uplink carriers according to the quality and the quality threshold of the first beam.

The above-mentioned device of the present embodiment may be used to execute the technical solution executed by the terminal/chip of the terminal in the above-mentioned method embodiments, and its implementation principle and technical effects are similar, where the functions of each module may refer to corresponding descriptions in the method embodiments, and are not repeated herein.

Fig. 9 is a schematic structural diagram of an apparatus provided in another embodiment of the present application, as shown in fig. 9, where the apparatus in this embodiment may be deployed on a terminal, and the apparatus includes: a transceiver 411 and a processor 412.

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

The transceiver 411 may include necessary radio frequency communication devices such as mixers. The processor 412 may include at least one of 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 a Field-programmable gate array (Field-Programmable Gate Array, FPGA).

Optionally, the terminal of this embodiment may further include a memory 413, where the memory 413 is configured to store program instructions, and the processor 412 is configured to invoke the program instructions in the memory 413 to execute the above scheme.

The program instructions may be embodied in the form of software functional units and may be sold or used as a stand-alone product, and the memory 413 may be any form of computer readable storage medium. With such understanding, all or part of the technical solutions of the present application may be embodied in the form of a software product, which includes several instructions for causing a computer device, and in particular, the processor 412, to perform all or part of the steps of the terminal in the various embodiments of the present application. And the aforementioned computer-readable storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The above-mentioned device of the present embodiment may be used to execute the technical scheme of the terminal/chip execution of the terminal in the above-mentioned method embodiments, and its implementation principle and technical effects are similar, where the functions of each device may refer to corresponding descriptions in the method embodiments, and are not repeated herein.

Fig. 10 is a schematic structural diagram of a chip provided in an embodiment of the present application, and as shown in fig. 10, the chip in the embodiment may be used as a chip of a terminal, and the chip in the embodiment may include: a memory 421 and a processor 422. The memory 421 is communicatively coupled to the processor 422.

In a hardware implementation, the above receiving module 402, processing module 401 and transmitting module 403 may be embedded in hardware form in a processor 422 or separate from the chip.

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 scheme.

The chip described in the embodiment may be used to execute the technical solutions of the terminal or the internal chip thereof in the embodiments of the methods described in the application, and the implementation principle and the technical effects are similar, where the functions of each module may refer to corresponding descriptions in the embodiments of the methods, and are not repeated herein.

Fig. 11 is a schematic structural diagram of an apparatus provided in an embodiment of the present application, where the apparatus may be deployed in a network device, as shown in fig. 11, and the apparatus in this embodiment includes: a transmitting module 501 and a receiving module 502. The sending module 501 is configured to send measurement configuration information to a terminal, where the measurement configuration information includes first indication information and a measurement object, where the first indication information is used to instruct the terminal to detect, according to the first indication information, the one or more candidate beams based on the measurement object when the beam failure occurs; and the receiving module 502 is configured to receive a beam restoration request message sent by the terminal, where the beam restoration request message is used for performing beam failure restoration.

In some embodiments, the apparatus may further comprise a processing module 503 for generating 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, where the measurement event type in the first indication information is used to indicate that a condition triggered by the measurement event is that a beam failure occurs, the measurement event includes an identification of the measurement object, and the measurement event is measurement processing based on the measurement object.

The above-mentioned apparatus of the present embodiment may be used to execute the technical scheme of the network device/chip execution of the network device in the method embodiment of fig. 3 or fig. 4, and its implementation principle and technical effects are similar, where the functions of each module may refer to corresponding descriptions in the method embodiment, and are not repeated herein.

The apparatus provided in another embodiment of the present application may adopt the same structure as shown in fig. 11, and a transmitting module configured to transmit, to a terminal, 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, and the beam identifier and the first quasi-parity information are used by the terminal to detect one or more candidate beams; and the receiving module is used for receiving a beam restoration request message sent by the terminal, wherein the beam restoration request message is used for carrying out beam failure restoration.

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

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

The above-mentioned apparatus of the present embodiment may be used to execute the technical scheme of the network device/chip execution of the network device in the method embodiment of fig. 5 or fig. 6, and its implementation principle and technical effects are similar, where the functions of each module may refer to corresponding descriptions in the method embodiment, and are not repeated herein.

The apparatus provided in another embodiment of the present application may have the same structure as that shown in fig. 11, where the sending module is configured to send 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 send, according to the configuration information of the at least one second uplink carrier, a beam failure recovery request message using one second uplink carrier in the at least one second uplink carrier.

The above-mentioned apparatus of the present embodiment may be used to implement the technical scheme of the network device/chip implementation of the network device in the method embodiment of fig. 7B, which has similar implementation principles and technical effects, where the functions of each module may refer to corresponding descriptions in the method embodiment, and are not repeated herein.

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

The above-mentioned apparatus of the present embodiment may be used to implement the technical scheme of the network device/chip implementation of the network device in the method embodiment of fig. 7C, which has similar implementation principles and technical effects, where the functions of each module may be described with reference to the corresponding descriptions in the method embodiment, and are not repeated herein.

Fig. 12 is a schematic structural diagram of an apparatus provided in another embodiment of the present application, where the apparatus may be deployed in a network device, as shown in fig. 12, and the apparatus in this embodiment includes: a transceiver 511 and a processor 512.

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

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

Optionally, the apparatus of this embodiment may further include a memory 513, where the memory 513 is configured to store program instructions, and the processor 512 is configured to invoke the program instructions in the memory 513 to execute the above scheme.

The program instructions may be implemented in the form of software functional units and may be sold or used as a stand-alone product, and the memory 513 may be any form of computer readable storage medium. With such understanding, all or part of the present application may be embodied in a software product, including instructions for causing a computer device, and in particular, the processor 512, to perform all or part of the steps of a network device in various embodiments of the present application. And the aforementioned computer-readable storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The above-mentioned apparatus of the present embodiment may be used to execute the technical solutions executed by the network device/the chip of the network device in the above-mentioned method embodiments, and its implementation principle and technical effects are similar, where the functions of each device may refer to corresponding descriptions in the method embodiments, and are not repeated herein.

Fig. 13 is a schematic structural diagram of a chip provided in an embodiment of the present application, where, as shown in fig. 13, the chip in the embodiment may be used as a chip of a network device, and the chip in the embodiment may include: a memory 521 and a processor 522. The memory 521 is communicatively coupled to the processor 522.

In a hardware implementation, the above receiving module 502, processing module 503, and transmitting module 501 may be embedded in hardware form in a processor 522 or separate from the chip.

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 scheme.

The chip described in the embodiment may be used to execute the technical solutions of the network device or the internal chip thereof in the embodiments of the methods described in the present application, and the implementation principle and the technical effects are similar, where the functions of each module may refer to corresponding descriptions in the embodiments of the methods, and are not repeated herein.

It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation. The functional modules in the embodiments of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module. The integrated modules may be implemented in hardware or in software functional modules.

The integrated modules, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution, in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, 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 loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital Subscriber Line (DSL)), or wireless (e.g., 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, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), etc.

Claims

1. A method of beam failure recovery, comprising:

detecting one or more candidate beams when 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 comprises an operating frequency band of a terminal and a frequency band outside the operating frequency band;

determining a first beam, the first beam being one or more of the one or more candidate beams;

and carrying out beam failure recovery according to the determined first beam.

2. The method according to claim 1, wherein the method further comprises:

receiving measurement configuration information from a network device, the measurement configuration information including first indication information and a measurement object;

the first indication information comprises 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 the condition triggered by the measurement event is that beam failure occurs, the measurement event comprises an identification of the measurement object, and the measurement event is based on measurement processing of the measurement object.

3. The method of claim 2, wherein the detecting the one or more candidate beams when the beam failure occurs comprises:

And detecting the one or more candidate beams based on the measurement object corresponding to the identification in the measurement event when the beam failure occurs.

4. The method as recited in claim 1, further comprising:

a beam identification and first quasi co-location information corresponding to the beam identification are received, wherein the first quasi co-location information indicates a beam associated with the beam identification in the first frequency band.

5. The method of claim 4, wherein the detecting one or more candidate beams comprises:

and detecting the one or more candidate beams according to the beam identification and the first quasi co-location information.

6. The method according to any one of claims 1 to 5, wherein the first beam carries a synchronization signal, and the performing beam failure recovery according to the determined first beam includes:

determining a random access resource corresponding to the first wave beam according to the association relation between the random access resource and the synchronous signal in the first frequency band and the synchronous signal of the first wave beam;

transmitting a beam failure recovery request message through a random access resource corresponding to the first beam;

The beam failure recovery response message is received by controlling the set of resources.

7. The method according to any of claims 1 to 5, wherein the first beam carries channel state information-reference signals, the method further comprising:

determining a synchronization signal associated with the channel state information-reference signal based on second quasi co-located information and the channel state information-reference signal;

8. The method of claim 7, wherein the performing beam failure recovery based on the determined first beam comprises:

determining a random access resource corresponding to the first wave beam according to the association relation between the random access resource and the synchronous signal in the first frequency band and the synchronous signal associated with the channel state information-reference signal;

9. The method of claim 6, wherein the method further comprises:

And when the first beam is located outside the working frequency band, receiving a radio resource control message from network equipment, wherein the radio resource control message comprises the association relation between random access resources outside the working frequency band and synchronous signals.

10. The method of claim 7, wherein the method further comprises:

11. The method according to any one of claims 1 to 5, further comprising:

receiving uplink carrier configuration information from a network device, wherein the uplink carrier configuration information comprises configuration information of at least one second uplink carrier;

and transmitting a beam failure recovery request message by using one second uplink carrier in the at least one second uplink carrier according to the configuration information of the at least one second uplink carrier.

12. The method according to any one of claims 1 to 5, further comprising:

receiving uplink carrier configuration information from a network device, wherein the uplink carrier configuration information comprises configuration information of a first uplink carrier and at least one second uplink carrier;

And determining to use one second uplink carrier in the first uplink carrier or the at least one second uplink carrier to send a beam failure recovery request message according to the quality and the quality threshold of the first beam.

13. A method of beam failure recovery, comprising:

transmitting measurement configuration information to a terminal, wherein the measurement configuration information comprises first indication information and a measurement object, the first indication information is used for indicating the terminal to detect one or more candidate beams based on the measurement object according to the first indication information when beam failure occurs, and the frequency of each beam in the one or more candidate beams belongs to a first frequency band, and the first frequency band comprises an operating frequency band of the terminal and a frequency band outside the operating frequency band; the terminal is used for determining a first beam, and carrying out beam failure recovery according to the determined first beam, wherein the first beam is one or more beams in the one or more candidate beams;

and receiving a beam restoration request message sent by the terminal, wherein the beam restoration request message is used for carrying out beam failure restoration.

14. The method according to claim 13, wherein the first indication information includes a measurement event type and a measurement event corresponding to the measurement event type, and the measurement event includes an identification of the measurement object when the condition for the measurement event trigger in the first indication information is that a beam failure occurs, and the measurement event is measurement processing based on the measurement object.

15. The method according to claim 13 or 14, wherein the receiving the beam restoration request message sent by the terminal includes:

and receiving a beam failure recovery request message through a random access resource corresponding to a first beam, wherein the first beam is one or more beams in the one or more candidate beams.

16. The method of claim 15, wherein the method further comprises:

determining a beam for bearing a physical downlink control channel according to the random access resource corresponding to the first beam;

and sending a beam failure recovery response message to the terminal.

17. A method of beam failure recovery, comprising:

transmitting a beam identification and first quasi co-location information corresponding to the beam identification to a terminal, wherein the first quasi co-location information indicates a beam associated with the beam identification in a first frequency band, and the beam identification and the first quasi co-location information are used for detecting one or more candidate beams by the terminal, and the first frequency band comprises an operating frequency band of the terminal and a frequency band outside the operating frequency band;

18. The method of claim 17, wherein the receiving the beam restoration request message sent by the terminal comprises:

19. The method of claim 18, wherein the method further comprises:

and sending a beam failure recovery response message to the terminal.

20. An apparatus, comprising:

a processing module, configured to detect one or more candidate beams when a beam failure occurs, where a frequency of each of the one or more candidate beams belongs to a first frequency band, and the first frequency band includes an operating frequency band of a terminal and a frequency band outside the operating frequency band;

the processing module is further configured to determine a first beam, where the first beam is one or more of the one or more candidate beams;

And the processing module is further used for carrying out beam failure recovery according to the determined first beam.

21. The apparatus of claim 20, wherein the apparatus further comprises: a receiving module;

the processing module receives measurement configuration information from network equipment through the receiving module, wherein the measurement configuration information comprises first indication information and a measurement object;

22. The apparatus of claim 21, wherein the processing module is configured to: and detecting the one or more candidate beams based on the measurement object corresponding to the identification in the measurement event when the beam failure occurs.

23. The apparatus of claim 20, wherein the apparatus further comprises: a receiving module;

the processing module receives, by the receiving module, a beam identification and first quasi co-location information corresponding to the beam identification, wherein the first quasi co-location information indicates a beam associated with the beam identification in the first frequency band.

24. The apparatus of claim 23, wherein the processing module is configured to:

25. The apparatus according to any one of claims 20 to 24, further comprising a transmitting module, the processing module configured to:

controlling the sending module to send a beam failure recovery request message through the random access resource corresponding to the first beam;

and controlling a receiving module in the device to receive the beam failure recovery response message through the control resource set.

26. The apparatus according to any of claims 20 to 24, wherein the processing module is further configured to determine a synchronization signal associated with the channel state information-reference signal based on second quasi co-location information and the channel state information-reference signal when the first beam carries the channel state information-reference signal;

27. The apparatus of claim 26, wherein the processing module is configured to: determining a random access resource corresponding to the first wave beam according to the association relation between the random access resource and the synchronous signal in the first frequency band and the synchronous signal associated with the channel state information-reference signal;

28. The apparatus of claim 25, wherein the receiving module in the apparatus is configured to: and when the first beam is located outside the working frequency band, receiving a radio resource control message from network equipment, wherein the radio resource control message comprises the association relation between random access resources outside the working frequency band and synchronous signals.

29. The apparatus of claim 26, wherein the receiving module in the apparatus is configured to: and when the first beam is located outside the working frequency band, receiving a radio resource control message from network equipment, wherein the radio resource control message comprises the association relation between random access resources outside the working frequency band and synchronous signals.

30. The apparatus according to any one of claims 20 to 24, further comprising: a receiving module and a transmitting module;

the receiving module is configured to receive uplink carrier configuration information from a network device, where the uplink carrier configuration information includes configuration information of at least one second uplink carrier;

the processing module sends a beam failure recovery request message by using one second uplink carrier in the at least one second uplink carrier according to the configuration information of the at least one second uplink carrier through the sending module.

31. The apparatus according to any one of claims 20 to 24, further comprising: a receiving module and a transmitting module;

the receiving module is configured to receive uplink carrier configuration information from a 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 determine, by using the sending module, to send, according to the quality and the quality threshold of the first beam, a beam failure recovery request message using the first uplink carrier or one of the at least one second uplink carrier.

32. An apparatus, comprising:

a transmitting module, configured to transmit measurement configuration information to a terminal, where the measurement configuration information includes first indication information and a measurement object, where the first indication information is used to instruct the terminal to detect one or more candidate beams based on the measurement object according to the first indication information when a beam failure occurs, where a 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 a frequency band outside the operating frequency band; the terminal is used for determining a first beam, and carrying out beam failure recovery according to the determined first beam, wherein the first beam is one or more beams in the one or more candidate beams;

and the receiving module is used for receiving a beam restoration request message sent by the terminal, wherein the beam restoration request message is used for carrying out beam failure restoration.

33. The apparatus of claim 32, wherein the first indication information includes a measurement event type and a measurement event corresponding to the measurement event type, wherein the measurement event in the first indication information is used to indicate that a condition triggered by the measurement event is that a beam failure occurs, the measurement event includes an identification of the measurement object, and the measurement event is measurement processing based on the measurement object.

34. The apparatus of claim 32 or 33, wherein the receiving module is configured to:

35. The apparatus of claim 34, wherein the apparatus further comprises: a processing module;

the processing module is used for determining a beam for bearing 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.

36. An apparatus, comprising:

a transmitting module, configured to transmit a beam identifier and first quasi co-location information corresponding to the beam identifier to a terminal, where the first quasi co-location information indicates a beam associated with the beam identifier in a first frequency band, and the beam identifier and the first quasi co-location information are used by the terminal to detect one or more candidate beams, and the first frequency band includes an operating frequency band of the terminal and a frequency band outside the operating frequency band;

37. The apparatus of claim 36, wherein the receiving module is configured to:

38. The apparatus of claim 37, wherein the apparatus further comprises: a processing module;