CN110719154B

CN110719154B - Beam failure recovery request transmission method and device

Info

Publication number: CN110719154B
Application number: CN201810766308.5A
Authority: CN
Inventors: 杨宇; 孙鹏
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2018-07-12
Filing date: 2018-07-12
Publication date: 2021-06-01
Anticipated expiration: 2038-07-12
Also published as: CN110719154A

Abstract

The embodiment of the invention provides a beam failure recovery request transmission method and device, relates to the technical field of communication, and is used for solving the problem of how to select a resource for sending BFRQ by UE in a multi-carrier scene. The UE in the multi-carrier system comprises the following steps: receiving configuration information from a network side device, the configuration information comprising: a first mapping relationship, the first mapping relationship comprising: a mapping relationship between a first candidate beam reference signal and a first PRACH resource; and under the condition that the UE determines that a beam failure event occurs and the candidate beam selected by the UE is a first candidate beam, sending a beam failure recovery request BFRQ to the network side equipment through the first PRACH resource, wherein the first candidate beam is a candidate beam used by the network side equipment for sending the first candidate beam reference signal. The embodiment of the invention is used for transmitting BFRQ.

Description

Beam failure recovery request transmission method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting a Beam Failure Recovery Request (BFRQ).

Background

In a high-band communication system, since a wavelength of a radio signal is short, communication interruption is easily caused by a signal being blocked, a User Equipment (UE) moving, or the like, and when communication interruption occurs, the system needs to recover communication by beam failure recovery (beam failure recovery).

In general, the general procedure for beam failure recovery is: the method comprises the steps that UE (user equipment) acquires a Physical Downlink Control Channel (PDCCH) block error rate (BLER) by monitoring a beam failure detection reference signal (BFD RS) on a Downlink beam on a Physical layer, determines whether a beam failure event (beam failure event) occurs according to the acquired PDCCH BLER, and sends a BFRQ to network side equipment after a base station receives the BFRQ sent by the UE; and after receiving the response instruction sent by the base station, the UE recovers the beam failure according to the response instruction sent by the base station. In the process that the UE sends the BFRQ to the network side device, if a contention-free Physical Random Access Channel (PRACH) resource is configured for the UE, the BFRQ is sent to the network side device using the contention-free PRACH resource, and if the contention-free PRACH resource is not configured for the UE, the BFRQ can be sent to the network side device using a contention-based RACH resource or a Physical Uplink Control Channel (PUCCH) resource. However, in a multi-carrier scenario, a cell where a PRACH resource configured by a network side device for a UE is located may be different from a cell where a beam failure event occurs, so that the UE cannot select a resource for transmitting a BFRQ based on the prior art, and further the BFRQ cannot be normally transmitted.

Disclosure of Invention

The embodiment of the invention provides a beam failure recovery request transmission method and device, which are used for solving the problem of how to select a resource for sending BFRQ by UE in a multi-carrier scene.

In order to solve the technical problem, the invention is realized as follows:

in a first aspect, an embodiment of the present invention provides a beam failure recovery request transmission method, which is applied to a UE in a multi-carrier system, and the method includes:

receiving configuration information from a network side device, the configuration information comprising: a first mapping relationship, the first mapping relationship comprising: a mapping relationship between a first candidate beam reference signal and a first PRACH resource;

and under the condition that the UE determines that a beam failure event occurs and the candidate beam selected by the UE is a first candidate beam, sending a beam failure recovery request BFRQ to the network side equipment through the first PRACH resource, wherein the first candidate beam is a candidate beam used by the network side equipment for sending the first candidate beam reference signal.

In a second aspect, an embodiment of the present invention provides a beam failure recovery request transmission method, which is applied to a network side device in a multi-carrier system, and the method includes:

sending configuration information to User Equipment (UE), wherein the configuration information comprises: a first mapping relationship, the first mapping relationship comprising: a mapping relationship between a first candidate beam reference signal and a first PRACH resource;

and receiving a beam failure recovery request BFRQ sent by the UE through the first PRACH resource under the condition that the UE determines that a beam failure event occurs and the candidate beam selected by the UE is a first candidate beam, wherein the first candidate beam is a candidate beam used by network side equipment for sending the first candidate beam reference signal.

In a third aspect, an embodiment of the present invention provides a UE, including:

a receiving unit, configured to receive configuration information from a network side device, where the configuration information includes: a first mapping relationship, the first mapping relationship comprising: a mapping relationship between a first candidate beam reference signal and a first PRACH resource;

a sending unit, configured to send a beam failure recovery request BFRQ to the network side device through the first PRACH resource when the UE determines that a beam failure event occurs and a candidate beam selected by the UE is a first candidate beam, where the first candidate beam is a candidate beam used by the network side device to send the first candidate beam reference signal.

In a fourth aspect, an embodiment of the present invention provides a network side device, including:

a sending unit, configured to send configuration information to a user equipment UE, where the configuration information includes: a first mapping relationship, the first mapping relationship comprising: a mapping relationship between a first candidate beam reference signal and a first PRACH resource;

a receiving unit, configured to receive a beam failure recovery request BFRQ sent by the UE through the first PRACH resource when the UE determines that a beam failure event occurs and a candidate beam selected by the UE is a first candidate beam, where the first candidate beam is a candidate beam used by a network side device to send the first candidate beam reference signal.

In a fifth aspect, an embodiment of the present invention provides a UE, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the beam failure recovery request transmission method according to the first aspect.

In a sixth aspect, an embodiment of the present invention provides a network-side device, which includes a processor, a memory, and a computer program stored in the memory and executable on the processor, and when the computer program is executed by the processor, the method for transmitting a beam failure recovery request according to the second aspect is implemented.

In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements the steps of the beam failure recovery request transmission method according to the first aspect or the second aspect.

The method for transmitting the beam failure recovery request provided by the embodiment of the invention firstly receives configuration information from network side equipment, and because the configuration information comprises a mapping relation between a first candidate beam reference signal and a first PRACH resource, under the condition that a beam failure event occurs and a candidate beam selected by UE is a first candidate beam used by the network side equipment for transmitting the first candidate beam reference signal, the beam failure recovery request BFRQ is transmitted to the network side equipment through the first PRACH resource. That is, the network side device configures the PRACH resource associated with the candidate beam reference signal corresponding to the selected candidate beam for the UE through the configuration information, so that the UE can determine the PRACH resource for sending the BFRQ according to the selected candidate beam after determining that the beam failure event occurs and selecting the candidate beam, and then send the BFRQ through the selected PRACH resource, so that the UE can select the resource for sending the BFRQ according to the embodiment of the present invention, thereby ensuring normal sending of the BFRQ.

Drawings

Fig. 1 is a schematic diagram of a possible structure of a communication system according to an embodiment of the present invention;

fig. 2 is an interaction flow diagram of a beam failure recovery request transmission method according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a UE according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a hardware structure of a UE according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a network-side device according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a hardware structure of a network-side device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship; in the formula, the character "/" indicates that the preceding and following related objects are in a relationship of "division". The term "plurality" herein means two or more, unless otherwise specified.

For the convenience of clearly describing the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, the words "first", "second", and the like are used to distinguish the same items or similar items with basically the same functions or actions, and those skilled in the art can understand that the words "first", "second", and the like do not limit the quantity and execution order.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion. In the embodiments of the present invention, the meaning of "a plurality" means two or more unless otherwise specified.

In a multi-carrier scenario, a cell where a PRACH resource configured by a network side device for a UE is located may be different from a cell where a beam failure event occurs, so that the UE cannot select a resource for transmitting a BFRQ based on the prior art, and further the BFRQ cannot be normally transmitted.

In order to solve the problem, embodiments of the present invention provide a method and a device for transmitting a beam failure recovery request, where the method first receives configuration information from a network side device, and the configuration information includes a mapping relationship between a first candidate beam reference signal and a first PRACH resource, so that a beam failure recovery request BFRQ is sent to the network side device through the first PRACH resource when a UE determines that a beam failure event occurs and a candidate beam selected by the UE is a first candidate beam used by the network side device to send the first candidate beam reference signal. That is, the network side device configures the PRACH resource associated with the candidate beam reference signal corresponding to the selected candidate beam for the UE through the configuration information, so that the UE can determine the PRACH resource for sending the BFRQ according to the selected candidate beam after determining that the beam failure event occurs and selecting the candidate beam, and then send the BFRQ through the selected PRACH resource, so that the UE can select the resource for sending the BFRQ according to the embodiment of the present invention, thereby ensuring normal sending of the BFRQ.

The technical scheme provided by the invention can be applied to various communication systems, such as a 5G communication system, a future evolution system or a plurality of communication convergence systems and the like. A variety of application scenarios may be included, for example, scenarios such as Machine to Machine (M2M), D2M, macro and micro Communication, enhanced Mobile Broadband (eMBB), ultra high reliability and ultra Low Latency Communication (urrllc), and mass internet of things Communication (mtc). These scenarios include, but are not limited to: communication between the UE and the UE, communication between the network side device and the network side device, or communication between the network side device and the UE. The embodiment of the invention can be applied to the communication between the network side equipment and the UE in the 5G communication system, or the communication between the UE and the UE, or the communication between the network side equipment and the network side equipment.

Fig. 1 shows a schematic diagram of a possible structure of a communication system according to an embodiment of the present invention. As shown in fig. 1, the communication system may include: a network side device 11 (shown in fig. 1 by taking the network side device as a base station as an example), and at least one UE 12 (shown in fig. 1 by including two UEs). The UE 12 may communicate with the Network side device 11 through a Radio Access Network (RAN), where the Network side device 11 generates a plurality of carriers, and each carrier corresponds to a cell.

Further, the network-side device 11 may be a base station, a core network device, a Transmission and Reception node (TRP), a relay station, an access Point, or the like. The first network side device 12 and/or the second network side device 13 may be a Base Transceiver Station (BTS) in a Global System for Mobile communication (GSM) or Code Division Multiple Access (CDMA) network, may also be an nb (nodeb) in a Wideband Code Division Multiple Access (WCDMA), and may also be an eNB or enodeb (evolved nodeb) in LTE. The Network side device 11 may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario. The network side device 11 may also be a network side device in a 5G communication system or a network side device in a future evolution network.

The UE 12 may be a wireless UE, which may refer to a device that provides voice and/or other traffic data connectivity to a user, a handheld device, computing device, or other processing device connected to a wireless modem, a vehicular device, a wearable device, a UE in a future 5G network or a UE in a future evolved PLMN network, etc. with wireless communication capabilities. A Wireless UE may communicate with one or more core networks via a Radio Access Network (RAN), and may be a Mobile terminal, such as a Mobile phone (or "cellular" phone) and a computer with a Mobile terminal, for example, a portable, pocket, hand-held, computer-included, or vehicle-mounted Mobile device, which exchanges languages and/or data with the RAN, and Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like, and the Wireless terminal may also be a Mobile device, a UE terminal, an Access terminal, a Wireless Communication device, a terminal unit, a Station, a Mobile Station (Mobile Station), or a vehicle-mounted Mobile device, A Remote Station (Remote Station), a Remote Station, a Remote Terminal (Remote Terminal), a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a User Agent (User Agent), a Terminal device, and the like. As an example, in the embodiment of the present invention, fig. 1 illustrates that the terminal is a mobile phone.

An embodiment of the present invention provides a beam failure recovery request transmission method, where the method is used for a UE and a network side device in a multi-carrier system, and specifically, referring to fig. 2, the beam failure recovery request transmission method may include the following steps:

s11, the network side equipment sends configuration information to the UE.

Correspondingly, the UE receives configuration information from a network side device.

Wherein the configuration information comprises: a first mapping relationship, the first mapping relationship comprising: a mapping relationship between a Reference Signal (RS) of a first candidate beam (candidate beam) and a first PRACH resource.

Specifically, the configuration information may include mapping relationships between all candidate beam reference signals configured for the UE and PRACH resources, and the mapping relationships between all candidate beam reference signals configured for the UE and PRACH resources may be encapsulated in the configuration information in the form of mapping relationships.

Exemplarily, the candidate beam reference signals configured for the UE include: candidate beam reference signal 1, candidate beam reference signal 2, candidate beam reference signal 3 … …, and candidate beam reference signal 10, the mapping relationship between all candidate beam reference signals configured for the UE and the PRACH resource can be shown in table 1 below:

TABLE 1

It should be noted that, as shown in table 1 above, for any two candidate beam reference signals configured for the UE, the PRACH resources respectively corresponding to the two candidate beam reference signals may be the same PRACH resource or different PRACH resources, that is, one PRACH resource may have a mapping relationship with one or more candidate beam reference signals. Similarly, multiple candidate beam reference signals may correspond to the same PRACH resource. In the embodiment of the present invention, this is not limited, and it is subject to the fact that each candidate beam reference signal configured for the UE has a mapping relationship with one PRACH resource.

Optionally, the first candidate beam reference signal is configured by the network side device for the UE.

It should be noted that the network side device that transmits the configuration information and the network side device that configures the first candidate beam reference signal for the UE may be the same network side device or different network side devices.

And S12, the UE sends BFRQ to the network side equipment through the first PRACH resource under the condition that the occurrence of the beam failure event is determined and the selected candidate beam is the first candidate beam.

Correspondingly, the network side equipment receives the BFRQ sent by the UE.

The first candidate beam is a candidate beam used by the network side equipment to transmit the first candidate beam reference signal.

Specifically, the process of determining whether a beam failure event occurs by the UE may include: the UE measures a beam failure detection reference signal (BFD RS) in a physical layer, determines a Beam Failure Instance (BFI) if it is detected that an assumed PDCCH block error rate of all service beams satisfies a preset condition, and determines a beam failure event when the number of consecutive times of the beam failure instances reaches a preset number.

Further, the process of selecting the candidate beam by the UE may include: and the UE physical layer measures the candidate beam reference signals, and reports the measurement result meeting the preset condition to the UE high layer when the UE physical layer receives a request, an instruction or a notification from the UE high layer, and the UE high layer selects the candidate beam based on the report of the UE physical layer.

In addition, the procedure for the UE to send the BFRQ to the network side device in the above embodiment may specifically include the following steps a-c.

a. The selected candidate beam (first candidate beam) is determined.

b. A candidate beam reference signal (first candidate beam reference signal) on the first candidate beam measured when finding the first candidate beam is determined from the first candidate beam.

c. And determining the PRACH resource (first PRACH resource) having a mapping relation with the first candidate beam reference signal according to the first candidate beam reference signal and the first mapping relation.

d. And sending BFRQ to the network side equipment through the first PRACH resource.

Optionally, on the basis of the foregoing embodiment, the configuration information sent by the network side device to the UE further includes: first indication information, where the first indication information is used to indicate a cell and/or BWP where the first PRACH resource is located;

before step S12 (sending a BFRQ to the network side device through the first PRACH resource), the method for transmitting a beam failure recovery request according to the embodiment of the present invention further includes:

and the UE determines a cell and/or a bandwidth part (BWP) where the first PRACH resource is located according to the first indication information.

The first indication information in the above embodiment may be specifically used to indicate one of the following items 1 to 3:

1. the first indication information is used for indicating a cell where the first PRACH resource is located.

2. The first indication information is used for indicating the BWP where the first PRACH resource is located.

3. The first indication information is used for indicating a cell where the first PRACH resource is located and a BWP where the first PRACH resource is located.

It should be noted that, a plurality of BWPs may be included in a cell, and if the first indication information indicates the BWP where the first PRACH resource is located, the cell where the first PRACH resource is located is also indicated, so the content of the indications 2 and 3 is substantially the same.

In the above embodiment, the configuration information sent by the network side device to the UE further includes first indication information used for indicating a cell and/or BWP where the first PRACH resource is located, so that the UE may determine, according to the first indication information, a location (cell and/or BWP) where the first PRACH resource is located before sending a BFRQ to the network side device through the first PRACH resource.

Optionally, a cell in which the UE receives the configuration information is a first cell (a cell in which the network side device sends the configuration information is a first cell), a cell in which the first PRACH resource is located is a second cell, a cell in which the UE receives the first candidate beam reference signal resource is a third cell (a cell in which the network side device sends the first candidate beam reference signal resource is a third cell), and then a relationship among the first cell, the second cell, and the third cell may be any one of the following i-v:

i, the first cell, the second cell and the third cell are all different cells.

That is, the cell transmitting the configuration information, the cell where the first PRACH resource is located, and the cell transmitting the first candidate beam reference signal are all different cells. For example: the Cell transmitting the configuration information is Cell1, the Cell where the first PRACH resource is located is Cell 2, and the Cell transmitting the first candidate beam reference signal is Cell 3.

And II, the second cell and the first cell are the same cell, and the second cell and the third cell are different cells.

That is, the cell transmitting the configuration information and the cell where the first PRACH resource is located are the same cell and are both different from the cell transmitting the first candidate beam reference signal, for example: the Cell where the configuration information is transmitted and the first PRACH resource are located is Cell4, and the Cell where the first candidate beam reference signal is transmitted is Cell 5.

III, the second cell and the third cell are the same cell, and the second cell and the first cell are different cells.

That is, the cell where the first PRACH resource is located and the cell transmitting the first candidate beam reference signal are the same cell and both are different from the cell transmitting the configuration information. For example: the Cell where the first PRACH resource is located and the Cell transmitting the first candidate beam reference signal are Cell6, and the Cell transmitting the configuration information is Cell 7.

And IV, the first cell and the third cell are the same cell, and the first cell and the second cell are different cells.

That is, the cell transmitting the configuration information and the cell transmitting the first candidate beam reference signal are the same cell, and are both different from the cell in which the first PRACH resource is located. For example: the Cell transmitting the configuration information and the Cell transmitting the first candidate beam reference signal are Cell8, and the Cell where the first PRACH resource is located is Cell 9.

And V, the first cell, the second cell and the third cell are the same cell.

That is, the cell transmitting the configuration information, the cell where the first PRACH resource is located, and the cell transmitting the first candidate beam reference signal are the same cell. For example: the Cell transmitting the configuration information, the Cell where the first PRACH resource is located, and the Cell transmitting the first candidate beam reference signal are all cells 10.

Optionally, if the BWP where the UE receives the configuration information is a first BWP (the BWP where the network-side device sends the configuration information is the first BWP), the BWP where the first PRACH resource is located is a second BWP, and the BWP where the UE receives the first candidate beam reference signal resource is a third BWP (the BWP where the network-side device sends the first candidate beam reference signal resource is the third BWP), a relationship between the first BWP, the second BWP, and the third BWP may be any one of the following 1 to 5:

1. the first, second, and third BWPs are all different BWPs.

That is, the BWP transmitting the configuration information, the BWP where the first PRACH resource is located, and the BWP transmitting the first candidate beam reference signal are all different BWPs. For example: the BWP transmitting the configuration information is BWP1, the BWP where the first PRACH resource is located is BWP 2, and the BWP transmitting the first candidate beam reference signal is BWP 3.

2. The second BWP and the first BWP are the same BWP, and the second BWP and the third BWP are different BWPs.

That is, the BWP transmitting the configuration information is the same BWP as the BWP where the first PRACH resource is located, and both are different from the BWP transmitting the first candidate beam reference signal, for example: the BWP where the BWP transmitting the configuration information and the first PRACH resource are located is BWP4, and the BWP transmitting the first candidate beam reference signal is BWP 5.

3. The second BWP and the third BWP are the same BWP, and the second BWP and the first BWP are different BWPs.

That is, the BWP where the first PRACH resource is located is the same BWP as the BWP where the first candidate beam reference signal is transmitted, and both are different from the BWP where the configuration information is transmitted. For example: the BWP where the first PRACH resource is located and the BWP where the first candidate beam reference signal is transmitted is BWP6, and the BWP where the configuration information is transmitted is BWP 7.

4. The first and third BWPs are the same BWP, and the first and second BWPs are different BWPs.

That is, the BWP transmitting the configuration information and the BWP transmitting the first candidate beam reference signal are the same BWP, and both are different from the BWP where the first PRACH resource is located. For example: the BWP transmitting the configuration information and the BWP transmitting the first candidate beam reference signal are BWP8, and the BWP where the first PRACH resource is located is BWP 9.

5. The first, second, and third BWPs are the same BWP.

That is, the BWP transmitting the configuration information, the BWP where the first PRACH resource is located, and the BWP transmitting the first candidate beam reference signal are the same BWP. For example: the BWP transmitting the configuration information, the BWP where the first PRACH resource is located, and the BWP transmitting the first candidate beam reference signal are all BWP 10.

Optionally, on the basis of the foregoing embodiment, the configuration information sent by the network side device to the UE further includes: second indication information, where the second indication information is used to indicate an opportunity (RACH occase, RO) to send a BFRQ to the network side device through the first PRACH resource; before the step S12 (the UE sends BFRQ to the network side device via the first PRACH resource), the method further includes:

and the UE determines the time for sending BFRQ to the network side equipment through the first PRACH resource according to the second indication information.

Optionally, the second indication information sent by the network side device to the UE is a mapping relationship between a timing for sending a BFRQ to the network side device through the first PRACH resource and the first candidate beam reference signal resource.

Optionally, the first candidate beam Reference signal resource may be a Synchronization Signal Block (SSB) resource or a Channel State Information Reference signal (CSI-RS) resource.

Specifically, information related to the RO may be added to configuration information of the first candidate beam reference signal resource (SSB resource or CSI-RS resource).

For example, after adding the related information of the RO to the configuration information of the SSB resource, the configuration information of the SSB resource may be as follows:

BFR-SSB-Resource::＝SEQUENCE{

ssb SSB-Index，

ra-OccasionList SEQUENCE(SIZE(1..maxRA-OccasionsPerCSIRS))OFINTEGER(0..maxRA-Occasions-1)OPTIONAL,--Need R

ra-PreambleIndex INTEGER(0..63),

...

}

further, when the configuration information sent by the network side device further includes: when the second indication information is a mapping relationship between a timing for sending a BFRQ to the network side device through the first PRACH resource and the first candidate beam reference signal resource, the method for requesting transmission of a beam failure recovery provided in the foregoing embodiment further includes:

the UE determining the first candidate beam-reference signal resource;

and the UE determines the time for sending BFRQ to the network side equipment through the first PRACH resource according to the first candidate beam reference signal resource and the second indication information.

Optionally, on the basis of the foregoing embodiment, before step S12 (sending a BFRQ to the network side device through the first PRACH resource), the method for transmitting a beam failure recovery request according to the embodiment of the present invention further includes:

and the UE determines spatial relationship information (spatial relationship information) of the first PRACH resource according to a preset mode.

The preset mode is specified by a communication protocol, or configuration or indication information of the spatial relationship information of the first PRACH resource sent by the network side device, or is customized by the UE.

That is, the UE may determine the spatial relationship information of the first PRACH resource in a communication protocol specification or a configuration information or a customized manner sent by the network side device.

In addition, when the network side device sends configuration or indication information of the spatial relationship information of the first PRACH resource, the configuration or indication information of the spatial relationship information of the first PRACH resource sent by the network side device includes:

a Synchronization Signal Block Resource Indicator (SSBRI), or a CSI-RS Resource Indicator (CRI), or a channel Sounding Reference Signal Resource Indicator (SRS) Resource Indicator (SRI).

Optionally, the determining the spatial relationship information of the first PRACH resource according to the preset mode may specifically be any one of the following one to four:

firstly, determining the spatial relationship information of the first PRACH resource according to the first candidate beam reference signal.

For example, the determining the spatial relationship information of the first PRACH resource according to the first candidate beam reference signal may specifically be: and using uplink beam information corresponding to the candidate beam (first candidate beam) where the first candidate beam reference signal is located as the spatial relationship information of the first PRACH resource.

Determining spatial relationship information of a target Physical Uplink Control CHannel (PUCCH) as spatial relationship information of the first PRACH resource, where the target PUCCH is a last xth-sent PUCCH, and X is a positive integer.

For example, the spatial relationship information of the PUCCH that was transmitted last may be determined as the spatial relationship information of the first PRACH resource.

And thirdly, determining spatial relationship information of a target Physical Uplink Shared Channel (PUSCH) as the spatial relationship information of the first PRACH resource, wherein the target PUSCH is a PUSCH sent for the latest Yth time, and Y is a positive integer.

For example, the spatial relationship information of the PUSCH transmitted last time may be determined as the spatial relationship information of the first PRACH resource.

Fourthly, determining the spatial relationship information of a target uplink channel as the spatial relationship information of the first PRACH resource, wherein the target uplink channel is an uplink channel sent in the last Z-th time, and the uplink channel comprises: PUCCH and PUSCH, and Z is a positive integer.

Optionally, on the basis of the foregoing embodiment, the configuration information sent by the network side device to the UE further includes: third indication information, where the third indication information is used to indicate that a carrier corresponding to a cell where the first PRACH resource is located belongs to an FR1 frequency band or an FR2 frequency band.

Specifically, the FR1 frequency band in the embodiment of the present invention refers to a frequency band below 6GHz, and the FR2 frequency band refers to a millimeter wave frequency band.

Further, when the configuration information sent by the network side device to the UE further includes third indication information, before step S12 (sending a BFRQ to the network side device through the first PRACH resource), the method for transmitting a beam failure recovery request according to the embodiment of the present invention further includes:

and the UE determines the spatial relationship information of the first PRACH resource under the condition that the carrier corresponding to the cell where the first PRACH resource is located belongs to an FR2 frequency band.

That is, when the UE determines that the carrier corresponding to the cell where the first PRACH resource is located belongs to the FR2 frequency band, it needs to determine the spatial relationship information of the first PRACH resource.

Optionally, the UE may determine the spatial relationship information of the first PRACH resource by using the preset method.

That is, the spatial relationship information of the first PRACH resource may be defined by a communication protocol, or may be configuration or indication information of the spatial relationship information of the first PRACH resource sent by the network side device, or may be determined in a manner customized by the UE.

Similarly, the UE may specifically determine the spatial relationship information of the first PRACH resource as any one of the above one to four.

The UE does not need to determine spatial relationship information of the first PRACH resource when it is determined that the carrier corresponding to the cell in which the first PRACH resource is located belongs to the FR1 frequency band, that is, the UE may send the BFRQ omnidirectionally through the first PRACH resource or send the BFRQ using a wide beam through the first PRACH resource.

In another embodiment of the present invention, specifically, referring to fig. 3, the UE300 includes:

a receiving unit 31, configured to receive configuration information from a network-side device, where the configuration information includes: a first mapping relationship, the first mapping relationship comprising: mapping relation between a first candidate wave beam reference signal and a first Physical Random Access Channel (PRACH) resource;

a sending unit 32, configured to send a beam failure recovery request BFRQ to the network side device through the first PRACH resource when the UE determines that a beam failure event occurs and a candidate beam selected by the UE is a first candidate beam, where the first candidate beam is a candidate beam used by the network side device to send the first candidate beam reference signal.

Optionally, the configuration information further includes: first indication information, where the first indication information is used to indicate a cell and/or a bandwidth part BWP where the first PRACH resource is located;

the sending unit 32 is further configured to determine, before sending a BFRQ to the network-side device via the first PRACH resource, a cell and/or a BWP where the first PRACH resource is located according to the first indication information.

Optionally, the configuration information further includes: second indication information, where the second indication information is used to indicate an opportunity to send a BFRQ to the network side device via the first PRACH resource;

the sending unit 32 is further configured to, before sending a BFRQ to the network side device through the first PRACH resource, determine, according to the second indication information, an opportunity to send a BFRQ to the network side device through the first PRACH resource.

Optionally, the second indication information is a mapping relationship between a timing for sending a BFRQ to the network side device through the first PRACH resource and the first candidate beam reference signal resource;

the sending unit 32 is specifically configured to determine the first candidate beam reference signal resource, and determine, according to the first candidate beam reference signal resource and the second indication information, a timing for sending a BFRQ to the network side device through the first PRACH resource.

Optionally, the sending unit 32 is further configured to determine, according to a preset manner, spatial relationship information of the first PRACH resource before sending the BFRQ to the network side device through the first PRACH resource;

the preset mode is specified by a communication protocol, or configuration or indication information of the spatial relationship information of the first PRACH resource sent by the network side device, or is self-defined by the UE.

Optionally, the sending unit 32 is specifically configured to,

determining spatial relationship information of the first PRACH resource according to a first candidate beam reference signal;

or;

determining spatial relationship information of a target Physical Uplink Control Channel (PUCCH) as spatial relationship information of the first PRACH resource, wherein the target PUCCH is a PUCCH sent for the latest Xth time, and X is a positive integer;

or;

determining spatial relationship information of a target Physical Uplink Shared Channel (PUSCH) as spatial relationship information of the first PRACH resource, wherein the target PUSCH is a PUSCH sent for the latest Yth time, and Y is a positive integer;

or;

determining spatial relationship information of a target uplink channel as spatial relationship information of the first PRACH resource, wherein the target uplink channel is an uplink channel sent in the last Z-th time, and the uplink channel comprises: PUCCH and PUSCH, and Z is a positive integer.

Optionally, the configuration or indication information of the spatial relationship information of the first PRACH resource, sent by the network side device, includes:

the synchronization signal block resource indication SSBRI, or the channel state information reference signal resource indication CRI, or the channel sounding reference signal resource indication SRI.

Optionally, the configuration information further includes: third indication information, where the third indication information is used to indicate that a carrier corresponding to a cell where the first PRACH resource is located belongs to an FR1 frequency band or an FR2 frequency band;

the sending unit 32 is further configured to determine spatial relationship information of the first PRACH resource when it is determined that the carrier corresponding to the cell where the first PRACH resource is located belongs to an FR2 frequency band, and not determine the spatial relationship information of the first PRACH resource when it is determined that the carrier corresponding to the cell where the first PRACH resource is located belongs to an FR1 frequency band.

Optionally, the first candidate beam reference signal resource is a channel state information reference signal CSI-RS resource;

or;

the first candidate beam reference signal resource is a synchronization signal block SSB resource.

Optionally, the cell receiving the configuration information is a first cell, the cell where the first PRACH resource is located is a second cell, and the cell where the first candidate beam reference signal resource is received is a third cell;

the first cell, the second cell, and the third cell are all different cells;

or;

the second cell and the first cell are the same cell, and the second cell and the third cell are different cells;

or;

the second cell and the third cell are the same cell, and the second cell and the first cell are different cells;

or;

the first cell, the second cell, and the third cell are the same cell.

Optionally, the BWP receiving the configuration information is a first BWP, the BWP where the first PRACH resource is located is a second BWP, and the BWP where the first candidate beam reference signal resource is received is a third BWP;

the first BWP, the second BWP, and the third BWP are all different BWPs;

or;

the second BWP and the first BWP are the same BWP, and the second BWP and the third BWP are different BWPs;

or;

the second BWP and the third BWP are the same BWP, and the second BWP and the first BWP are different BWPs;

or;

the first, second, and third BWPs are the same BWP.

The UE provided by the embodiment of the invention firstly receives configuration information from network side equipment, and because the configuration information comprises the mapping relation between a first candidate beam reference signal and a first PRACH resource, under the condition that the UE determines that a beam failure event occurs and the candidate beam selected by the UE is the first candidate beam used by the network side equipment for sending the first candidate beam reference signal, a beam failure recovery request BFRQ is sent to the network side equipment through the first PRACH resource. That is, the network side device configures the PRACH resource associated with the candidate beam reference signal corresponding to the selected candidate beam for the UE through the configuration information, so that the UE can determine the PRACH resource for sending the BFRQ according to the selected candidate beam after determining that the beam failure event occurs and selecting the candidate beam, and then send the BFRQ through the selected PRACH resource, so that the UE can select the resource for sending the BFRQ according to the embodiment of the present invention, thereby ensuring normal sending of the BFRQ.

Fig. 4 is a schematic hardware structure diagram of a UE implementing an embodiment of the present invention, where the UE300 includes but is not limited to: radio frequency unit 101, network module 102, audio output unit 103, input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the UE structure shown in fig. 4 does not constitute a limitation of the UE, which may include more or fewer components than those shown, or combine certain components, or a different arrangement of components. In the embodiment of the present invention, the UE includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

The radio frequency unit 101 is configured to receive configuration information from a network side device, where the configuration information includes: a first mapping relationship, the first mapping relationship comprising: mapping relation between a first candidate wave beam reference signal and a first Physical Random Access Channel (PRACH) resource;

the radio frequency unit 101 is further configured to send a beam failure recovery request BFRQ to the network side device through the first PRACH resource when the UE determines that a beam failure event occurs and the candidate beam selected by the UE is a first candidate beam, where the first candidate beam is a candidate beam used by the network side device to send the first candidate beam reference signal.

Because the configuration information includes a mapping relation between the first candidate beam reference signal and the first PRACH resource, when the UE determines that a beam failure event occurs and the candidate beam selected by the UE is the first candidate beam used by the network side device to transmit the first candidate beam reference signal, the configuration information transmits a beam failure recovery request BFRQ to the network side device through the first PRACH resource. That is, the network side device configures the PRACH resource associated with the candidate beam reference signal corresponding to the selected candidate beam for the UE through the configuration information, so that the UE can determine the PRACH resource for sending the BFRQ according to the selected candidate beam after determining that the beam failure event occurs and selecting the candidate beam, and then send the BFRQ through the selected PRACH resource, so that the UE can select the resource for sending the BFRQ according to the embodiment of the present invention, thereby ensuring normal sending of the BFRQ.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 101 may be used for receiving and sending signals during a message transmission or call process, and specifically, after receiving downlink data from a base station, the downlink data is processed by the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through a wireless communication system.

The UE provides the user with wireless broadband internet access via the network module 102, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the network module 102 or stored in the memory 109 into an audio signal and output as sound. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the UE300 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 includes a speaker, a buzzer, a receiver, and the like.

The input unit 104 is used to receive an audio or video signal. The input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, and the Graphics processor 1041 processes image data of a still picture or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the network module 102. The microphone 1042 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode.

The UE300 also includes at least one sensor 105, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or backlight when the UE300 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in multiple directions (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the UE attitude (such as horizontal and vertical screen switching, related games, magnetometer attitude calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 105 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the UE. Specifically, the user input unit 107 includes a touch panel 1071 and other input devices 1072. Touch panel 1071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 1071 (e.g., operations by a user on or near touch panel 1071 using a finger, stylus, or any suitable object or attachment). The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and receives and executes commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. Specifically, other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

Further, the touch panel 1071 may be overlaid on the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although in fig. 4, the touch panel 1071 and the display panel 1061 are two independent components to implement the input and output functions of the UE, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the UE, and is not limited herein.

The interface unit 108 is an interface for connecting an external device to the UE 300. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input from external devices (e.g., data information, power, etc.) and transmit the received input to one or more elements within the UE300 or may be used to transmit data between the UE300 and external devices.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 110 is a control center of the UE, connects various parts of the entire UE using various interfaces and lines, performs various functions of the UE and processes data by running or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the UE. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The UE300 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to implement functions of managing charging, discharging, and power consumption via the power management system.

In addition, the UE300 includes some functional modules that are not shown, and are not described in detail herein.

In another embodiment of the present invention, a network-side device is provided, and specifically, as shown in fig. 5, the network-side device 500 includes:

a sending unit 51, configured to send configuration information to a user equipment UE, where the configuration information includes: a first mapping relationship, the first mapping relationship comprising: mapping relation between a first candidate wave beam reference signal and a first Physical Random Access Channel (PRACH) resource;

a receiving unit 52, configured to receive a beam failure recovery request BFRQ sent by the UE through the first PRACH resource when the UE determines that a beam failure event occurs and a candidate beam selected by the UE is a first candidate beam, where the first candidate beam is a candidate beam used by a network side device to send the first candidate beam reference signal.

Optionally, the configuration information further includes: first indication information, where the first indication information is used to indicate a cell and/or a bandwidth portion BWP in which the first PRACH resource is located.

Optionally, the configuration information further includes: and second indication information, where the second indication information is used to indicate an opportunity for the UE to send a BFRQ to the network side device through the first PRACH resource.

Optionally, the second indication information is a mapping relationship between a time when the UE sends a BFRQ to the network side device through the first PRACH resource and the first candidate beam reference signal resource.

Optionally, the sending unit 51 is further configured to send, to the UE, configuration or indication information of spatial relationship information of the first PRACH resource before the receiving unit 52 receives a BFRQ sent by the UE through the first PRACH resource.

Optionally, the configuration or indication information of the spatial relationship information of the first PRACH resource includes:

Optionally, the configuration information further includes: third indication information, where the third indication information is used to indicate that a carrier corresponding to a cell where the first PRACH resource is located belongs to an FR1 frequency band or an FR2 frequency band.

Optionally, the network side device is further configured to configure the first candidate beam reference signal for the UE.

or;

Optionally, the cell that sends the configuration information is a first cell, the cell where the first PRACH resource is located is a second cell, and the cell where the resource that sends the first candidate beam reference signal is a third cell;

the first cell, the second cell, and the third cell are all different cells;

or;

the first cell, the second cell, and the third cell are the same cell.

Optionally, the BWP that sends the configuration information is a first BWP, the BWP where the first PRACH resource is located is a second BWP, and the BWP where the first candidate beam reference signal resource is sent is a third BWP;

the first BWP, the second BWP, and the third BWP are all different BWPs;

or;

the first, second, and third BWPs are the same BWP.

The network device provided by the embodiment of the invention firstly sends the configuration information to the UE, and the configuration information comprises the mapping relation between the first candidate beam reference signal and the first PRACH resource, so that under the condition that the UE determines that the beam failure event occurs and the candidate beam selected by the UE is the first candidate beam used by the network side device for sending the first candidate beam reference signal, the network side device sends the beam failure recovery request BFRQ through the first PRACH resource. That is, the network side device configures the PRACH resource associated with the candidate beam reference signal corresponding to the selected candidate beam for the UE through the configuration information, so that the UE can determine the PRACH resource for transmitting the BFRQ according to the selected candidate beam after determining that the beam failure event occurs and selecting the candidate beam, and further transmit the BFRQ through the selected PRACH resource, so that the UE can select the resource for transmitting the BFRQ according to the embodiment of the present invention, thereby ensuring that the BFRQ is normally transmitted

An embodiment of the present invention further provides a network side device, and as shown in fig. 6, the network side device 500 includes: the processor 61, the memory 62, and a computer program stored in the memory 62 and capable of running on the processor 61, where the computer program is executed by the processor 121 to implement the steps executed by the network side device in the beam failure recovery request transmission method shown in the first embodiment, and can achieve the same technical effects, and are not described herein again to avoid repetition.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements multiple processes of the beam failure recovery request transmission method in the foregoing embodiments, and can achieve the same technical effect, and in order to avoid repetition, the details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements a plurality of processes of the foregoing beam failure recovery request transmission method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer readable storage medium is, for example, ROM, RAM, magnetic disk or optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network-side device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A beam failure recovery request transmission method is applied to User Equipment (UE) in a multi-carrier system, and comprises the following steps:

receiving configuration information from a network side device, the configuration information comprising: a first mapping relationship, the first mapping relationship comprising: mapping relation between a first candidate wave beam reference signal and a first Physical Random Access Channel (PRACH) resource;

and under the condition that the UE determines that a beam failure event occurs and the candidate beam selected by the UE is a first candidate beam, sending a beam failure recovery request BFRQ to the network side equipment through the first PRACH resource, wherein the first candidate beam is a candidate beam used by the network side equipment for sending the first candidate beam reference signal, and the first PRACH resource is determined according to the first candidate beam reference signal and the first mapping relation.

2. The method of claim 1,

the configuration information further includes: first indication information, where the first indication information is used to indicate a cell and/or a bandwidth part BWP where the first PRACH resource is located; before sending a BFRQ to the network side device over the first PRACH resource, the method further includes:

and determining the cell and/or BWP where the first PRACH resource is located according to the first indication information.

3. The method of claim 1,

the configuration information further includes: second indication information, where the second indication information is used to indicate an opportunity to send a BFRQ to the network side device via the first PRACH resource; before sending a BFRQ to the network side device over the first PRACH resource, the method further includes:

and determining the time for sending BFRQ to the network side equipment through the first PRACH resource according to the second indication information.

4. The method according to claim 3, wherein the second indication information is a mapping relationship between a timing for sending a BFRQ to the network side device via the first PRACH resource and the first candidate beam reference signal resource;

the determining, according to the second indication information, an opportunity to send a BFRQ to the network side device via the first PRACH resource includes:

determining the first candidate beam-reference signal resource;

and determining the time for sending BFRQ to the network side equipment through the first PRACH resource according to the first candidate beam reference signal resource and the second indication information.

5. The method of claim 1, wherein before transmitting a BFRQ to the network side device over the first PRACH resource, the method further comprises:

determining spatial relationship information of the first PRACH resource according to a preset mode;

6. The method of claim 5, wherein the determining the spatial relationship information of the first PRACH resource according to a preset manner comprises:

or;

7. The method of claim 5, wherein the information indicating or configuring the spatial relationship information of the first PRACH resource sent by the network side device comprises:

8. The method of claim 1,

the configuration information further includes: third indication information, where the third indication information is used to indicate that a carrier corresponding to a cell where the first PRACH resource is located belongs to an FR1 frequency band or an FR2 frequency band;

before sending a BFRQ to the network side device over the first PRACH resource, the method further includes:

determining spatial relationship information of the first PRACH resource under the condition that the carrier corresponding to the cell where the first PRACH resource is located belongs to an FR2 frequency band;

and under the condition that the carrier corresponding to the cell where the first PRACH resource is located belongs to an FR1 frequency band, not determining the spatial relationship information of the first PRACH resource.

9. The method of claim 1, wherein the first candidate beam reference signal is configured for the UE by a network side device.

10. The method of claim 1,

the first candidate beam reference signal resource is a channel state information reference signal (CSI-RS) resource;

or;

11. The method of any of claims 1-10, wherein the cell receiving the configuration information is a first cell, the cell where the first PRACH resource is located is a second cell, and the cell where the first candidate beam reference signal resource is received is a third cell;

the first cell, the second cell, and the third cell are all different cells;

or;

the first cell, the second cell, and the third cell are the same cell.

12. The method according to any of claims 1-10, wherein the BWP receiving the configuration information is a first BWP, the BWP where the first PRACH resource is located is a second BWP, and the BWP where the first candidate beam-reference signal resource is received is a third BWP;

the first BWP, the second BWP, and the third BWP are all different BWPs;

or;

the first, second, and third BWPs are the same BWP.

13. A beam failure recovery request transmission method is applied to a network side device in a multi-carrier system, and comprises the following steps:

sending configuration information to User Equipment (UE), wherein the configuration information comprises: a first mapping relationship, the first mapping relationship comprising: mapping relation between a first candidate wave beam reference signal and a first Physical Random Access Channel (PRACH) resource;

and receiving a beam failure recovery request BFRQ sent by the UE through the first PRACH resource when the UE determines that a beam failure event occurs and the candidate beam selected by the UE is a first candidate beam, wherein the first candidate beam is a candidate beam used by a network side device for sending the first candidate beam reference signal, and the first PRACH resource is determined according to the first candidate beam reference signal and the first mapping relation.

14. The method of claim 13,

the configuration information further includes: first indication information, where the first indication information is used to indicate a cell and/or a bandwidth portion BWP in which the first PRACH resource is located.

15. The method of claim 13, wherein the configuration information further comprises: and second indication information, where the second indication information is used to indicate an opportunity for the UE to send a BFRQ to the network side device through the first PRACH resource.

16. The method of claim 15, wherein the second indication information is a mapping relationship between an opportunity of the UE to send a BFRQ to the network side device through the first PRACH resource and the first candidate beam reference signal resource.

17. The method of claim 13, wherein prior to receiving the BFRQ transmitted by the UE over the first PRACH resource, the method further comprises:

and sending configuration or indication information of the spatial relationship information of the first PRACH resource to the UE.

18. The method of claim 17, wherein the information indicating or configuration of the spatial relationship information for the first PRACH resource comprises:

19. The method of claim 13,

the configuration information further includes: third indication information, where the third indication information is used to indicate that a carrier corresponding to a cell where the first PRACH resource is located belongs to an FR1 frequency band or an FR2 frequency band.

20. The method of claim 13, further comprising:

configuring the first candidate beam reference signal for the UE.

21. The method of claim 13,

or;

22. The method of any of claims 13-21, wherein the cell sending the configuration information is a first cell, the cell where the first PRACH resource is located is a second cell, and the cell where the resource sending the first candidate beam reference signal is located is a third cell;

the first cell, the second cell, and the third cell are all different cells;

or;

the first cell, the second cell, and the third cell are the same cell.

23. The method according to any of claims 13-21, wherein the BWP where the configuration information is sent is a first BWP, the BWP where the first PRACH resource is located is a second BWP, and the BWP where the first candidate beam reference signal resource is sent is a third BWP;

the first BWP, the second BWP, and the third BWP are all different BWPs;

or;

the first, second, and third BWPs are the same BWP.

24. A User Equipment (UE), comprising:

a receiving unit, configured to receive configuration information from a network side device, where the configuration information includes: a first mapping relationship, the first mapping relationship comprising: mapping relation between a first candidate wave beam reference signal and a first Physical Random Access Channel (PRACH) resource;

a sending unit, configured to send a beam failure recovery request BFRQ to the network side device through the first PRACH resource when the UE determines that a beam failure event occurs and a candidate beam selected by the UE is a first candidate beam, where the first candidate beam is a candidate beam used by the network side device to send the first candidate beam reference signal, and the first PRACH resource is determined according to the first candidate beam reference signal and the first mapping relationship.

25. A network-side device, comprising:

a sending unit, configured to send configuration information to a user equipment UE, where the configuration information includes: a first mapping relationship, the first mapping relationship comprising: mapping relation between a first candidate wave beam reference signal and a first Physical Random Access Channel (PRACH) resource;

a receiving unit, configured to receive a beam failure recovery request BFRQ sent by the UE through the first PRACH resource when the UE determines that a beam failure event occurs and a candidate beam selected by the UE is a first candidate beam, where the first candidate beam is a candidate beam used by a network side device to send the first candidate beam reference signal, and the first PRACH resource is determined according to the first candidate beam reference signal and the first mapping relationship.

26. A user equipment, UE, comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the beam failure recovery request transmission method according to any of claims 1 to 12.

27. A network-side device comprising a processor, a memory, and a computer program stored on the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the steps of the beam failure recovery request transmission method according to any one of claims 13 to 23.

28. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the beam failure recovery request transmission method according to any one of claims 1 to 23.