CN111447681B

CN111447681B - Beam recovery method, device, medium and equipment

Info

Publication number: CN111447681B
Application number: CN201910045142.2A
Authority: CN
Inventors: 左君; 周伟; 倪吉庆; 黄学艳; 王森
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2019-01-17
Filing date: 2019-01-17
Publication date: 2023-03-28
Anticipated expiration: 2039-01-17
Also published as: CN111447681A; WO2020147737A1

Abstract

The present invention relates to the field of wireless technologies, and in particular, to a method, an apparatus, a medium, and a device for beam recovery. According to the method provided by the embodiment of the invention, when the terminal side determines that the base station side fails to transmit the beam, the terminal side transmits the first information through the PUCCH, and when receiving the DCI carrying the uplink authorization information, the terminal side reports the second information through the PUSCH scheduled by the DCI, wherein the second information can comprise N reference signal index values, so that the base station side can select the alternative beam to perform beam recovery according to the second information. The PUSCH can send a plurality of reference signal index values at one time, and even if the number of beams is large, a large amount of resources are not occupied, so that the resource overhead can be effectively reduced.

Description

Beam recovery method, device, medium and equipment

Technical Field

The present invention relates to the field of wireless technologies, and in particular, to a method, an apparatus, a medium, and a device for beam recovery.

Background

In an environment where spectrum resources are increasingly scarce, high-band spectrum resources are more used in order to meet the requirements of the fifth generation mobile communication system (5G). Meanwhile, in order to ensure the coverage, an analog beam forming technology can be adopted, so that the terminal and the base station select the optimal beam pair for communication. The high-frequency band spectrum resource is rich, but the radio propagation anti-attenuation capability of the high-frequency band spectrum resource is weak, a severe blocking (block) phenomenon exists, and a wall, a tree and even people moving around can cause signal interruption, so that continuous coverage is difficult to realize. Therefore, when the terminal determines that the quality of the communication link of the current beam pair communicating with the base station is poor (for example, the block error rate (BLER) is higher than the threshold value), the base station needs to be notified of the failure of sending the beam, that is, the beam recovery request can be sent to the base station, and meanwhile, the terminal reports other alternative beams with good quality to the base station, so that the two parties can switch to the alternative beam pair to continue communication, thereby avoiding communication interruption.

The beam recovery request in the existing beam recovery procedure is notified to the base station by the terminal through a dedicated Physical Random Access Channel (PRACH) resource. The PRACH resources are divided into a plurality of groups, and different resource groups have a binding relationship with the beam, for example, resource group 1 corresponds to beam a, and resource group 2 corresponds to beam B. And after receiving the beam recovery request sent by the terminal, the base station determines the beam bound with the PRACH resource used by the terminal as the alternative beam.

In summary, in the prior art, dedicated PRACH resources are required to send beam recovery requests, and if the number of beams is large, the PRACH resources need to be bound with the large number of PRACH resources, respectively, which results in large resource overhead.

Disclosure of Invention

The embodiment of the invention provides a beam recovery method, a beam recovery device, a beam recovery medium and beam recovery equipment, which are used for solving the problem of higher system overhead of the conventional beam recovery method.

The invention provides a beam recovery method, which comprises the following steps:

determining whether a beam failure occurs;

when the beam failure is determined, sending first information on a physical layer uplink control channel (PUCCH), wherein the first information is used for informing a base station of the beam failure;

receiving physical layer Downlink Control Information (DCI), and if the DCI carries uplink grant (UL grant) information, reporting second information in a physical layer uplink shared channel (PUSCH) scheduled by the DCI, wherein the second information comprises N reference signal index values, and N is a positive integer.

The invention also provides a beam recovery method, which comprises the following steps:

if first information sent by a terminal through a physical layer uplink control channel (PUCCH) is received, sending physical layer Downlink Control Information (DCI) to the terminal, wherein the DCI carries uplink grant (UL grant) information and indicates the terminal to report second information;

and receiving second information reported by the terminal through the physical layer uplink shared channel PUSCH scheduled by the DCI, wherein the second information comprises N reference signal index values, and N is a positive integer.

The invention also provides a beam recovery device, comprising:

a determination module for determining whether a beam failure occurs;

a sending module, configured to send first information on a physical uplink control channel PUCCH when the determining module determines that a beam failure occurs, where the first information is used to notify a base station of the beam failure; if the DCI received by the receiving module carries uplink grant (UL) grant information, reporting second information in a physical layer uplink shared channel (PUSCH) scheduled by the DCI, wherein the second information comprises N reference signal index values, and N is a positive integer;

and the receiving module is used for receiving the physical layer downlink control information DCI.

The present invention also provides a beam recovery apparatus, comprising:

the terminal comprises a receiving module, a sending module and a receiving module, wherein the receiving module is used for receiving first information sent by the terminal through a physical layer uplink control channel (PUCCH); receiving second information reported by the terminal through a physical layer uplink shared channel (PUSCH) scheduled by the DCI, wherein the second information comprises N reference signal index values, and N is a positive integer;

and the sending module is used for sending physical layer Downlink Control Information (DCI) to the terminal if the receiving module receives first information sent by the terminal through a PUCCH, wherein the DCI carries uplink grant (UL grant) information and indicates the terminal to report second information.

The present invention also provides a non-transitory computer storage medium storing an executable program for execution by a processor to implement the steps of any of the methods described above.

The invention also provides communication equipment, which comprises a memory, a processor, a transceiver and a bus interface; the processor is used for reading the program in the memory and executing:

determining whether a beam failure occurs; when the occurrence of beam failure is determined, sending first information on a physical layer uplink control channel (PUCCH) through the transceiver, wherein the first information is used for informing a base station of the occurrence of beam failure; receiving physical layer Downlink Control Information (DCI) through the transceiver, and if the DCI carries uplink grant (UL grant) information, reporting second information in a physical layer uplink shared channel (PUSCH) scheduled by the DCI through the transceiver, wherein the second information comprises N reference signal index values, and N is a positive integer; or, performing:

if first information sent by a terminal through a physical layer uplink control channel (PUCCH) is received through the transceiver, sending physical layer Downlink Control Information (DCI) to the terminal through the transceiver, wherein the DCI carries uplink grant (UL grant) information and indicates the terminal to report second information; and receiving second information reported by the terminal through a physical layer uplink shared channel (PUSCH) scheduled by the DCI through the transceiver, wherein the second information comprises N reference signal index values, and N is a positive integer.

According to the method provided by the embodiment of the invention, when determining that the base station side fails to transmit the beam, the terminal side transmits the first information through a physical layer uplink control channel (PUCCH), and when receiving physical layer Downlink Control Information (DCI) carrying uplink grant (UL grant) information, reports the second information through a physical layer uplink shared channel (PUSCH) scheduled by the DCI, wherein the second information may include N reference signal index values, so that the base station side can select an alternative beam according to the second information to perform beam recovery. The PUSCH can send a plurality of reference signal index values at one time, and even if the number of the wave beams is large, a large amount of resources cannot be occupied, so that the resource overhead can be effectively reduced.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic flowchart of a beam recovery method according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a beam recovery apparatus according to a second embodiment of the present invention;

fig. 3 is a schematic flowchart of a beam recovery method according to a third embodiment of the present invention;

fig. 4 is a schematic structural diagram of a beam recovery apparatus according to a fourth embodiment of the present invention;

fig. 5 is a schematic structural diagram of a communication device according to a fifth embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. 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.

It should be noted that, the "plurality" or "a plurality" mentioned herein means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

The terms "first," "second," and the like in the description and in the claims, and in the drawings described above, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.

Furthermore, the terms "comprises," "comprising," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Example one

An embodiment of the present invention provides a beam recovery method, which may be applied to a terminal side, and a flow of steps of the method may be as shown in fig. 1, where the method includes:

step 101, determining whether a beam failure occurs.

In this step, the terminal may determine whether a beam failure occurs, that is, determine whether the base station fails to transmit a beam to the terminal, and if it is determined that the beam failure occurs, may continue to perform step 102.

The condition for the terminal to determine that the beam failure occurs may be, but is not limited to: the reception quality of the reference signal of the beam transmitted by the base station to the terminal is less than the corresponding threshold.

The reception quality may include, but is not limited to, at least one of layer-to-layer signal-to-interference-and-noise ratio (L1-SINR), layer-to-reference signal reception quality (L1-RSRQ), and layer-to-reference signal reception power (L1-RSRP).

If the reception quality includes at least two parameters, the reception quality of the reference signal of the beam transmitted by the base station to the terminal is smaller than the corresponding threshold, which may be understood as that each parameter is smaller than its corresponding threshold.

Step 102, sending the first information.

In this step, if the terminal determines that a beam failure occurs, first information for informing the base station of the beam failure may be transmitted on the PUCCH.

The PUCCH used for transmitting the first information may be a dedicated PUCCH configured by higher layer signaling, and in this case, the PUCCH may be understood as being used only for transmitting the first information.

The PUCCH used for transmitting the first information may also be a PUCCH used for transmitting other uplink control information (e.g., scheduling Request (SR), hybrid automatic repeat request acknowledgement (harq-arq), etc.), that is, in this case, the PUCCH may be multiplexed and may be used for transmitting other uplink control information as well as the first information.

When the PUCCH is used to transmit other uplink control information, in order to ensure that the base station side can accurately distinguish whether the PUCCH carries other uplink control information or the first information, in one possible implementation manner, different PUCCH formats may be used when the PUCCH transmits other uplink control information and when the PUCCH transmits the first information. In this way, the base station can distinguish whether other uplink control information or the first information is transmitted by the PUCCH according to the PUCCH format.

In another possible implementation manner, when the PUCCH is a PUCCH used for transmitting other uplink control information, the PUCCH may use the same PUCCH format when transmitting the other uplink control information as when transmitting the first information, but the corresponding sequence generation parameter and/or the corresponding modulation symbol may be different. In this way, the base station can distinguish whether other uplink control information or the first information is transmitted by the PUCCH according to the corresponding sequence generation parameter and/or the corresponding modulation symbol.

For example, the PUCCH uses the cyclically shifted sequence format for transmitting other uplink control information and for transmitting the first information, but the corresponding sequence generation parameters are different.

For another example, the PUCCH transmits other uplink control information and the first information in a format in which a modulation symbol is multiplied by a sequence, where the modulation symbol uses information "0" when the PUCCH transmits other uplink control information, and the modulation symbol uses information "1" when the PUCCH transmits the first information. In this way, the base station can distinguish whether other uplink control information or the first information is transmitted by the PUCCH according to the difference of the modulation symbols.

Of course, when the PUCCH transmits other uplink control information and the first information both adopt a format in which a modulation symbol is multiplied by a sequence, the corresponding sequence generation parameter and the corresponding modulation symbol may be different, and at this time, the base station side may distinguish whether the PUCCH transmits other uplink control information or the first information according to the difference between the modulation symbol and the sequence generation parameter.

It should be noted that, if the terminal has multiple serving cells, the base station side may also determine the serving cell corresponding to the beam failure through the information related to the PUCCH, and then may perform beam recovery according to the serving cell corresponding to the beam failure.

In a possible implementation manner, the PUCCH resource may be determined according to a serving cell index value corresponding to the occurrence of the beam failure. That is, a corresponding relationship between the serving cell and the PUCCH resource may be established, the corresponding PUCCH resource may be determined according to the serving cell corresponding to the beam failure, and the first information may be transmitted through the PUCCH resource, so that the base station side may determine which serving cell has the beam failure according to the difference of the PUCCH resources.

It should be further noted that, in a possible implementation manner, the PUCCH resource corresponding to each serving cell may be an orthogonal PUCCH resource.

In another possible implementation manner, the sequence generation parameter and/or the corresponding modulation symbol used when the first information is transmitted on the PUCCH may be determined according to a serving cell index value corresponding to the occurrence of the beam failure. That is, a corresponding relationship between the serving cell, the sequence generation parameter and/or the modulation symbol may be established, the corresponding sequence generation parameter and/or the corresponding modulation symbol may be determined according to the serving cell corresponding to the beam failure, and the PUCCH may send the first information according to the corresponding sequence generation parameter and/or the corresponding modulation symbol, so that the base station side may generate the parameter and/or the corresponding modulation symbol according to the corresponding sequence, i.e., determine which serving cell has the beam failure.

For example, PUCCH resources corresponding to each serving cell may be the same PUCCH resource, and the first information may be transmitted using different sequence generation parameters. Specifically, when the first information is transmitted using a cyclic shift sequence, the corresponding sequence generation parameter may have a corresponding relationship with the serving cell index value. Thus, when receiving the first information, the base station side can determine which serving cell has beam failure according to the difference of the sequence generation parameters.

And step 103, receiving the DCI.

After the terminal transmits the first information on the PUCCH, the terminal may receive DCI, and if the received DCI carries UL grant information, may continue to perform step 104.

And step 104, reporting the second information.

If the received DCI carries UL grant information, in this step, second information may be reported in a PUSCH scheduled by the DCI, where the second information includes N reference signal index values, where N is a positive integer.

Each reference signal index value may be understood as corresponding to one alternative beam, and the second information may be understood as being used for instructing the base station to select an alternative beam for beam recovery according to the second information. Where N may be configured or predefined by the network side (base station side).

In a possible implementation, the reference signal index value may be an index value of a channel state information reference signal (CSI-RS), or may also be an index value of a synchronization signal block (SSB, SS/PBCH block). Of course, the reference signal index value may also be other index values of reference signals that can be used to identify alternative beams.

Further, the second information may include, in addition to the N reference signal index values, the reception quality of N reference signals corresponding to the N reference signal index values, so that the base station side may select an alternative beam for beam recovery according to the N reference signal index values and the reception quality of the N corresponding reference signals, improve the quality of the selected alternative beam, and ensure the success rate of beam recovery.

The reception quality may include, but is not limited to, at least one of a layer-to-layer signal-to-interference-and-noise ratio (L1-SINR), a layer-to-layer reference signal received quality (L1-RSRQ), and a layer-to-layer reference signal received power (L1-RSRP).

It should be noted that, in a possible implementation manner, the second information may be carried by a media access control element (MAC CE).

Further, the present embodiment may further include the following steps:

and 105, monitoring a physical layer downlink control channel (PDCCH).

In this step, the terminal may monitor the PDCCH. If the PDCCH is not monitored within the set duration threshold, it may be considered that the beam recovery fails, and step 106 may be continuously performed. If the PDCCH is monitored within a set time length threshold, the wave beam can be considered to be recovered successfully.

In one possible implementation, the nth slot (slot) after the second information may be transmitted on the PUSCH, where n is a non-negative integer, and the PDCCH scrambled by the monitoring temporary identifier (C-RNTI) or the modulation and decoding policy temporary identifier (MCS-C-RNTI) may be transmitted.

It can be understood that, in this step, the terminal may receive downlink information sent by the network side, and monitor the PDCCH according to the downlink information and the quasi co-location relationship between the antenna port and the reference signal in the reported second information.

When N is 1, it may be understood that when the second information corresponds to an alternative beam, the PDCCH is monitored, which may include, but is not limited to:

and monitoring the PDCCH according to the quasi co-location relation of the reference signal corresponding to the reference signal index value in the second information.

When N is a positive integer not less than 2, it may be understood that the PDCCH is monitored when the second information corresponds to a plurality of candidate beams, and the method may include, but is not limited to:

and monitoring the PDCCH according to the quasi-co-location relation of the reference signals corresponding to the index values of the first to Nth reference signals in the second information in sequence until a set time length threshold value is reached or the PDCCH is monitored.

I.e. can be understood as:

monitoring the PDCCH according to the quasi-co-location relation of the reference signals of the alternative beams corresponding to the first reference signal index value in the second information;

if the PDCCH is not monitored in a set sub-duration (for example, s slots, where s is a positive integer), monitoring the PDCCH according to a quasi-co-location relationship between the PDCCH and a reference signal corresponding to a second reference signal index value in the second information, and so on until a set duration threshold is reached or the PDCCH is monitored.

It should be noted that the duration threshold T may be configured or predefined by the network side. The set sub-duration may also be configured or predefined by the network side.

Of course, if the terminal monitors the PDCCH, the terminal may continue to monitor the PDCCH according to the quasi co-location relationship between the antenna port and the reference signal in the reported second information until the network side configures a new quasi co-location relationship for downlink transmission.

And step 106, continuing to perform beam recovery.

If it is deemed that the beam recovery by transmitting the second information through the PUSCH is not successful, the beam recovery may be resumed in the manner of the prior art, for example, a beam recovery request may be transmitted through a physical layer random access channel (PRACH) bound with an alternative beam.

The PRACH is bound to an alternative beam, which may be understood as a sequence transmitted on the PRACH and/or a physical time-frequency resource used is bound to a reference signal index value.

Corresponding to the method provided in the first embodiment, the following apparatuses are provided.

Example two

An embodiment of the present invention provides a beam recovery apparatus, which may be integrated in a terminal, and a structure of the apparatus may be as shown in fig. 2, where the apparatus includes:

the determining module 11 is used for determining whether a beam failure occurs;

the sending module 12 is configured to send first information on a physical uplink control channel PUCCH when the determining module determines that a beam failure occurs, where the first information is used to notify a base station of the beam failure; if the DCI received by the receiving module carries uplink grant (UL) grant information, reporting second information in a physical layer uplink shared channel (PUSCH) scheduled by the DCI, wherein the second information comprises N reference signal index values, and N is a positive integer;

the receiving module 13 is configured to receive physical layer downlink control information DCI.

The apparatus may further comprise a listening module 14:

the monitoring module 14 is configured to monitor a physical layer downlink control channel PDCCH; and if the PDCCH is not monitored within a set time length threshold value, the wave beam recovery is considered to be failed.

In a possible implementation manner, the monitoring module 14 may be further configured to not monitor the PDCCH within a set time threshold, and trigger sending a beam recovery request through a PRACH when it is considered that the beam recovery of this time fails, where the PRACH is bound with one alternative beam.

When N is 1, the monitoring module 14 may be specifically configured to monitor the PDCCH according to a quasi co-located relationship of a reference signal corresponding to the reference signal index value in the second information.

When N is a positive integer not less than 2, the monitoring module 14 may be specifically configured to monitor the PDCCH sequentially according to the quasi co-location relationship of the reference signals corresponding to the first to nth reference signal index values in the second information until a set duration threshold is reached or the PDCCH is monitored.

Corresponding to the method provided by the first embodiment of the present invention, the following method is provided.

EXAMPLE III

A third embodiment of the present invention provides a beam recovery method, where the method may be applied to a base station side, and a flow of steps of the method may be as shown in fig. 3, where the method includes:

step 201, receiving first information.

In this step, the base station may receive first information transmitted by the terminal through the PUCCH. The first information is used for informing the base station of the beam failure.

Step 202, transmitting DCI.

In this step, after receiving the first information, the base station may send DCI to a terminal that sends the first information, where the DCI carries UL grant information to instruct the terminal to report the second information.

And step 203, receiving second information.

In this step, the base station may receive second information reported by the terminal through the DCI scheduled PUSCH, where the second information may include N reference signal index values, where N is a positive integer.

And step 204, beam recovery is carried out.

Further, in this step, the base station may select an alternative beam for beam recovery according to the received second information.

If the second information includes N reference signal index values corresponding to the N candidate beams, in this step, the candidate beams may be selected for beam recovery according to the N reference signal index values in the second information.

It should be noted that, if the second information further includes the reception quality of N reference signals corresponding to the N reference signal index values, in this step, an alternative beam may be selected for beam recovery according to the N reference signal index values in the second information and the reception quality of the N reference signals corresponding to the N reference signal index values.

Corresponding to the method provided in the third embodiment, the following apparatus is provided.

Example four

A fourth embodiment of the present invention provides a beam recovery apparatus, which may be integrated in a base station, and a structure of the apparatus may be as shown in fig. 4, where the apparatus includes:

the receiving module 21 is configured to receive first information sent by a terminal through a physical layer uplink control channel PUCCH; and receiving second information reported by the terminal through a physical layer uplink shared channel (PUSCH) scheduled by the DCI, wherein the second information comprises N reference signal index values, and N is a positive integer.

The sending module 22 is configured to send, to the terminal, DCI (physical layer downlink control information) if the receiving module receives first information sent by the terminal through a PUCCH, where the DCI carries uplink grant UL grant information to instruct the terminal to report second information.

The apparatus may further comprise a recovery module 13:

the recovery module 13 is configured to select an alternative beam according to the second information for beam recovery.

The second information may further include reception qualities of N reference signals corresponding to the N reference signal index values.

Based on the same inventive concept, embodiments of the present invention provide the following apparatus and medium.

EXAMPLE five

Fifth embodiment of the present invention provides a communication device, which may have a structure as shown in fig. 5, and includes a memory 31, a processor 32, a transceiver 33, and a bus interface; the processor 32 is configured to read the program in the memory 31, and execute:

determining whether a beam failure occurs; when it is determined that a beam failure occurs, transmitting first information on a physical layer uplink control channel (PUCCH) through the transceiver 33, wherein the first information is used for informing a base station of the beam failure; receiving physical layer Downlink Control Information (DCI) through the transceiver 33, and reporting second information in a physical layer uplink shared channel (PUSCH) scheduled by the DCI through the transceiver 33 if the DCI carries uplink grant (UL grant) information, wherein the second information includes N reference signal index values, and N is a positive integer; or, performing:

if first information sent by a terminal through a physical layer uplink control channel (PUCCH) is received through the transceiver 33, sending physical layer Downlink Control Information (DCI) to the terminal through the transceiver 33, wherein the DCI carries uplink grant (UL grant) information and indicates the terminal to report second information; and receiving, by the transceiver 33, second information reported by the terminal through the DCI-scheduled physical layer uplink shared channel PUSCH, where the second information includes N reference signal index values, where N is a positive integer.

Optionally, the processor 32 may specifically include a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), one or more integrated circuits for controlling program execution, a hardware circuit developed by using a Field Programmable Gate Array (FPGA), or a baseband processor.

Optionally, the processor 32 may include at least one processing core.

Alternatively, the memory 31 may include a Read Only Memory (ROM), a Random Access Memory (RAM), and a disk memory. The memory 31 is used for storing data required by the at least one processor 32 during operation. The number of the memory 31 may be one or more.

A sixth embodiment of the present invention provides a nonvolatile computer storage medium, where the computer storage medium stores an executable program, and when the executable program is executed by a processor, the method provided in the first or third embodiment of the present invention is implemented.

In particular implementations, computer storage media may include: a Universal Serial Bus flash drive (USB), a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, an optical disk, or other storage media capable of storing program codes.

In the embodiments of the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the described unit or division of units is only one division of logical functions, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed coupling or direct coupling or communication connection between each other may be through some interfaces, indirect coupling or communication connection between devices or units, and may be in an electrical or other form.

The functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be an independent physical module.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the technical solutions of the embodiments of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device, such as a personal computer, a server, or a network device, or a processor (processor) to execute all or part of the steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: a universal serial bus flash drive (usb flash drive), a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, and various media capable of storing program codes.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method for beam recovery, the method comprising:

determining whether a beam failure occurs;

when it is determined that beam failure occurs, transmitting first information on a physical layer uplink control channel (PUCCH), wherein the PUCCH is a special PUCCH configured through high-layer signaling or is a PUCCH used for transmitting other uplink control information;

2. The method of claim 1, wherein the reference signal index value is an index value of a channel state information reference signal (CSI-RS) or an index value of a Synchronization Signal Block (SSB).

3. The method of claim 1, wherein the second information further includes reception quality of N reference signals corresponding to the N reference signal index values.

4. The method of claim 1, wherein the second information is carried by a media access layer control element (MAC CE).

5. The method of claim 1, wherein when the PUCCH is a PUCCH for transmitting other uplink control information, the PUCCH is configured to use a different PUCCH format for transmitting the other uplink control information than for transmitting the first information.

6. The method of claim 1, wherein when the PUCCH is a PUCCH for transmitting other uplink control information, the PUCCH is configured to transmit the other uplink control information in a same PUCCH format but with different corresponding sequence generation parameters and/or corresponding modulation symbols from the PUCCH used for transmitting the first information.

7. The method of claim 1, wherein the PUCCH resources are determined according to a serving cell index value corresponding to a beam failure.

8. The method of claim 1, wherein a sequence generation parameter and/or a corresponding modulation symbol used when transmitting the first information on the PUCCH is determined according to a serving cell index value corresponding to a beam failure.

9. The method of any of claims 1-8, wherein after reporting the second information in the DCI scheduled PUSCH, the method further comprises:

monitoring a physical layer downlink control channel (PDCCH);

and if the PDCCH is not monitored within a set time length threshold value, the wave beam recovery is considered to be failed.

10. The method of claim 9, wherein if the current beam recovery is deemed to have failed, the method further comprises:

and sending a beam recovery request through a physical layer random access channel (PRACH), wherein the PRACH is bound with one alternative beam.

11. The method of claim 9, wherein monitoring the PDCCH when N is 1 comprises:

12. The method of claim 9, wherein monitoring the PDCCH when N is a positive integer not less than 2 comprises:

13. A method for beam recovery, the method comprising:

if first information sent by a terminal through a physical layer uplink control channel (PUCCH) is received, sending physical layer Downlink Control Information (DCI) to the terminal, wherein the DCI carries uplink grant (UL grant) information and indicates the terminal to report second information, and the PUCCH is a dedicated PUCCH configured through high-level signaling or is a PUCCH used for transmitting other uplink control information;

14. The method of claim 13, wherein the method further comprises:

and selecting an alternative beam according to the second information for beam recovery.

15. The method of claim 13 or 14, wherein the second information further comprises reception quality of N reference signals corresponding to the N reference signal index values.

16. An apparatus for beam recovery, the apparatus comprising:

a determination module for determining whether a beam failure occurs;

a receiving module, configured to receive DCI (physical layer downlink control information);

a sending module, configured to send first information on a physical layer uplink control channel PUCCH when the determining module determines that a beam failure occurs, where the PUCCH is a dedicated PUCCH configured by a high layer signaling or a PUCCH used for transmitting other uplink control information; and if the DCI received by the receiving module carries uplink grant (UL) grant information, reporting second information in a physical layer uplink shared channel (PUSCH) scheduled by the DCI, wherein the second information comprises N reference signal index values, and N is a positive integer.

17. An apparatus for beam recovery, the apparatus comprising:

the terminal comprises a receiving module and a processing module, wherein the receiving module is used for receiving first information sent by a terminal through a physical layer uplink control channel (PUCCH), and the PUCCH is an exclusive PUCCH configured through high-layer signaling or is a PUCCH used for transmitting other uplink control information; receiving second information reported by a terminal through a physical layer uplink shared channel (PUSCH) scheduled by physical layer Downlink Control Information (DCI), wherein the second information comprises N reference signal index values, and N is a positive integer;

and the sending module is used for sending the DCI to the terminal if the receiving module receives first information sent by the terminal through a PUCCH, wherein the DCI carries uplink grant (UL grant) information and indicates the terminal to report second information.

18. The apparatus of claim 17, wherein the apparatus further comprises:

and the recovery module is used for selecting the alternative beam according to the second information to carry out beam recovery.

19. A non-transitory computer storage medium storing an executable program for execution by a processor to perform the steps of the method of any one of claims 1 to 15.

20. A communication device comprising a memory, a processor, a transceiver, and a bus interface; the processor is used for reading the program in the memory and executing:

determining whether a beam failure occurs; when the beam failure is determined to occur, transmitting first information on a physical layer uplink control channel (PUCCH) through the transceiver; receiving physical layer Downlink Control Information (DCI) through the transceiver, and reporting second information in a physical layer uplink shared channel (PUSCH) scheduled by the DCI through the transceiver if the DCI carries uplink grant (UL grant) information, wherein the second information comprises N reference signal index values, and N is a positive integer; or, performing:

if first information sent by a terminal through a physical layer uplink control channel (PUCCH) is received through the transceiver, sending physical layer Downlink Control Information (DCI) to the terminal through the transceiver, wherein the DCI carries uplink grant (UL grant) information and indicates the terminal to report second information; and receiving, by the transceiver, second information reported by the terminal through a physical layer uplink shared channel PUSCH scheduled by the DCI, where the second information includes N reference signal index values, where N is a positive integer.