CN112118037B - Beam switching method and device and communication equipment - Google Patents
Beam switching method and device and communication equipment Download PDFInfo
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- CN112118037B CN112118037B CN201910544752.7A CN201910544752A CN112118037B CN 112118037 B CN112118037 B CN 112118037B CN 201910544752 A CN201910544752 A CN 201910544752A CN 112118037 B CN112118037 B CN 112118037B
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Abstract
The invention provides a beam switching method and device and communication equipment, and belongs to the technical field of wireless communication. The beam switching method is applied to a terminal and comprises the following steps: detecting the quality of a reference signal in a first reference signal set to obtain a first quality detection result, wherein the reference signal in the first reference signal set has a corresponding relation with a transmission receiving point TRP and is used for detecting beam failure; and judging whether beam failure or partial beam failure occurs according to the first quality detection result. By the technical scheme of the invention, the terminal can detect the occurrence of partial beam failure and report the beam failure to the base station, and the base station can instruct the terminal to switch to other available beams to continue multi-TRP transmission.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for switching beams, and a communication device.
Background
In the existing communication protocol, the beam failure recovery process includes: 1) The terminal fails to detect the beam; 2) The terminal identifies alternative beams; 3) The terminal sends a Beam Failure Recovery Request (BFRQ) to the base station; 4) The terminal listens to the base station's response to the BFRQ.
The method for the terminal to detect the beam failure is as follows: terminal detection reference signal set
Quality of the medium reference signal, wherein
Configured by the base station or determined according to a Transmission Configuration Indication State (TCI State) of a control resource set (CORESETs). When in use
All reference signal quality in (1) is below Q out,LR Then, a beam failure (beam failure instance) is counted, and when the number of beam failure instances exceeds a defined number within a certain time, it is determined that a beam failure has occurred. The terminal identifies the alternative beam to pick out the reference signal set
Middle RSRP is greater than or equal to Q in,LR The reference signal of (1).
The existing communication protocol introduces a multi-TRP technology, that is, a terminal may establish a communication link with multiple Transmission Receive Points (TRPs) for data Transmission, and the multiple TRPs may improve Transmission reliability or Transmission rate by sending the same or different data. As shown in fig. 1, assuming that TRP1 and TRP2 belong to the same cell, according to the existing beam failure detection mechanism, the base station configures a reference signal set for detecting link quality of TRP1 and TRP2
When in use
All reference signals in the signal have a quality lower than Q out,LR The beam failure instance is only counted once.
However, in a multi-TRP scenario, a situation may occur in which a link between a terminal and only a certain TRP is blocked, for example, in fig. 1, TRP1 cannot communicate with the terminal, and TRP2 still communicates with the terminal, and this situation may be referred to as partial beam failure. In order to guarantee the reliability or transmission rate of communication, the terminal should switch to other available beams of TRP1 or communicate with the terminal; if the link quality between the TRP3 and the terminal is better, the terminal can also carry out multi-TRP transmission with the TRP2 and the TRP 3. However, in the existing mechanism, the terminal can only detect whether beam failure occurs, but cannot detect the occurrence of partial beam failure, which affects the reliability or transmission rate of communication.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method and an apparatus for switching beams, and a communication device, so that a terminal can detect the occurrence of partial beam failures and report the beam failures to a base station, and the base station can instruct the terminal to switch to other available beams to continue multi-TRP transmission.
To solve the above technical problem, embodiments of the present invention provide the following technical solutions:
the embodiment of the invention provides a beam switching method, which is applied to a terminal and comprises the following steps:
detecting the quality of a reference signal in a first reference signal set to obtain a first quality detection result, wherein the reference signal in the first reference signal set has a corresponding relation with a transmission receiving point TRP and is used for detecting beam failure;
and judging whether beam failure or partial beam failure occurs according to the first quality detection result.
Optionally, the method further comprises:
and detecting the quality of the reference signals in the second reference signal set to obtain a second quality detection result, wherein the reference signals in the second reference signal set have a corresponding relation with the transmission receiving point and are used for finding the alternative beams.
Optionally, the determining whether a beam failure or a partial beam failure occurs according to the first quality detection result includes:
and when the first quality detection result is that the number of times that the quality of all reference signals corresponding to any TRP in the first reference signal set in a preset time window is lower than a first preset threshold is greater than a preset number of times, judging that partial beam failure occurs.
Optionally, before the detecting the quality of the reference signals in the first reference signal set, the method further includes:
receiving the first reference signal set configured by the network side equipment; or
Determining the first reference signal set according to a relation of typeD quasi co-location QCL (quality-coordination) typeD in TCI-State of a control resource set.
Optionally, the first reference signal set includes a reference signal and a transmission and reception point identifier to which the reference signal belongs; or
The first reference signal set comprises a plurality of reference signal sets, and each reference signal set corresponds to a transmission receiving point.
Optionally, the second reference signal set includes a reference signal and a transmission and reception point identifier to which the reference signal belongs;
the second set of reference signals includes multiple sets of reference signals, each set of reference signals corresponding to a transmission receiving point.
The embodiment of the invention also provides a beam switching method, which is applied to network side equipment and comprises the following steps:
and sending a first reference signal set to a terminal, wherein reference signals in the first reference signal set have a corresponding relation with transmission receiving points TRP and are used for detecting beam failure.
Optionally, the method further comprises:
and sending a second reference signal set to the terminal, wherein the reference signals in the second reference signal set have a corresponding relation with the transmission receiving points and are used for discovering the alternative beams.
The embodiment of the invention also provides a beam switching device which is applied to a terminal and comprises a processor and a transceiver,
the processor is configured to detect quality of a reference signal in a first reference signal set to obtain a first quality detection result, where the reference signal in the first reference signal set has a correspondence with a transmission reception point TRP, and is used to detect beam failure; and judging whether beam failure or partial beam failure occurs according to the first quality detection result.
Optionally, the processor is further configured to detect quality of a reference signal in a second reference signal set to obtain a second quality detection result, where the reference signal in the second reference signal set has a corresponding relationship with a transmission receiving point, and is used to find the candidate beam.
Optionally, the processor is specifically configured to determine that a partial beam failure occurs when the first quality detection result is that the number of times that the quality of all reference signals corresponding to any TRP in the first reference signal set in a preset time window is lower than a first preset threshold is greater than a preset number of times.
Optionally, the transceiver is further configured to receive the first reference signal set configured by a network side device; or
The processor is also configured to determine the first set of reference signals according to a relationship of QCL typeD in TCI-State of a set of control resources.
Optionally, the first reference signal set includes a reference signal and a transmission/reception point identifier to which the reference signal belongs; or
The first reference signal set comprises a plurality of reference signal sets, and each reference signal set corresponds to a transmission receiving point.
Optionally, the second reference signal set includes a reference signal and a transmission/reception point identifier to which the reference signal belongs;
the second reference signal set comprises a plurality of reference signal sets, and each reference signal set corresponds to a transmission receiving point.
The embodiment of the invention also provides a beam switching device which is applied to network side equipment and comprises a processor and a transceiver,
the transceiver is configured to send a first reference signal set to a terminal, where reference signals in the first reference signal set have a correspondence with transmission reception points TRP, and are used to detect beam failure.
Optionally, the transceiver is further configured to send a second set of reference signals to the terminal, where reference signals in the second set of reference signals have a correspondence with transmission receiving points, and are used to find the alternative beam.
An embodiment of the present invention further provides a communication device, including: memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps in the beam switching method as described above.
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 the steps in the beam switching method described above.
The embodiment of the invention has the following beneficial effects:
in the above scheme, the terminal detects the quality of the reference signal in the first reference signal set to obtain a first quality detection result, the reference signal in the first reference signal set has a corresponding relation with the transmission receiving point and is used for detecting beam failure, and the terminal can judge whether beam failure or partial beam failure occurs according to the first quality detection result.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic diagram of a terminal capable of establishing a communication link with a plurality of TRPs for data transmission;
fig. 2 is a flowchart illustrating a beam switching method applied to a terminal according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a beam switching method applied to a network side device according to an embodiment of the present invention;
fig. 4 is a block diagram of a beam switching apparatus applied to a terminal according to an embodiment of the present invention;
fig. 5 is a block diagram of a beam switching apparatus applied to a network device according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The terms first, second and the like in the description and in the claims of the present application 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 application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations 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. In the description and in the claims "and/or" means at least one of the connected objects.
The techniques described herein are not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, and may also be used for various wireless communication systems, such as Code Division Multiple Access (CDMA), time Division Multiple Access (TDMA), frequency Division Multiple Access (FDMA), orthogonal Frequency Division Multiple Access (OFDMA), single-carrier Frequency Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" are often used interchangeably. CDMA systems may implement Radio technologies such as CDMA2000, universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system may implement radio technologies such as Ultra Mobile Broadband (UMB), evolved-UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, flash-OFDM, etc. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and LTE-advanced (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A, and GSM are described in documents from an organization named "third Generation Partnership project" (3 rd Generation Partnership project,3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3 GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. However, the following description describes the NR system for purposes of example, and NR terminology is used in much of the description below, although the techniques may also be applied to applications other than NR system applications.
The following description provides examples and does not limit the scope, applicability, or configuration set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the spirit and scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
The embodiment of the invention provides a beam switching method, a beam switching device and communication equipment, which enable a terminal to detect the occurrence of partial beam failure and report the partial beam failure to a base station, and the base station can instruct the terminal to switch to other available beams to continue multi-TRP transmission.
An embodiment of the present invention provides a beam switching method, applied to a terminal, as shown in fig. 2, including:
step 101: detecting the quality of a reference signal in a first reference signal set to obtain a first quality detection result, wherein the reference signal in the first reference signal set has a corresponding relation with a transmission receiving point TRP and is used for detecting beam failure;
the first reference signal set can be configured for the terminal by the network side device, and if the network side device does not configure the first reference signal set, the terminal determines the first reference signal set according to the relationship of QCL type in TCI-State of CORESET. The correspondence between the reference signals and the TRPs in the first reference signal Set may be determined by indicating TRP ids to which the respective reference signals belong, or the correspondence between the reference signals and the TRPs in the first reference signal Set may be determined by configuring the first reference signal Set to include a plurality of RS sets, each Set corresponding to one TRP.
Step 102: and judging whether beam failure or partial beam failure occurs according to the first quality detection result.
In this embodiment, the terminal detects the quality of the reference signal in the first reference signal set to obtain a first quality detection result, where the reference signal in the first reference signal set has a corresponding relationship with a transmission receiving point for detecting beam failure, and the terminal may determine whether beam failure or partial beam failure occurs according to the first quality detection result.
Optionally, the method further comprises:
and detecting the quality of the reference signals in the second reference signal set to obtain a second quality detection result, wherein the reference signals in the second reference signal set have a corresponding relation with the transmission receiving point and are used for finding the alternative beams.
The correspondence between the second reference signal and the TRP can be informed to the terminal through an explicit indication or a predefined mode; the correspondence between the reference signals and the TRPs in the second reference signal Set may be determined by indicating TRP ids to which the respective reference signals belong, or the second reference signal Set includes a plurality of RS sets, each Set corresponding to one TRP.
Optionally, the determining whether a beam failure or a partial beam failure occurs according to the first quality detection result includes:
and when the first quality detection result is that the number of times that the quality of all reference signals corresponding to any TRP in the first reference signal set in a preset time window is lower than a first preset threshold is greater than a preset number of times, judging that partial beam failure occurs.
Optionally, when the first quality detection result is that the number of times that the quality of all reference signals of all corresponding TRPs in the first reference signal set in the preset time window is lower than the first preset threshold is greater than a preset number of times, it is determined that the beam failure occurs.
Optionally, before the detecting the quality of the reference signals in the first reference signal set, the method further includes:
receiving the first reference signal set configured by the network side equipment; or
Determining the first reference signal set according to a QCL typeD relationship in TCI-State of a control resource set.
Optionally, the first reference signal set includes a reference signal and a transmission/reception point identifier to which the reference signal belongs; or
The first reference signal set comprises a plurality of reference signal sets, and each reference signal set corresponds to a transmission receiving point.
Optionally, the second reference signal set includes a reference signal and a transmission/reception point identifier to which the reference signal belongs;
the second reference signal set comprises a plurality of reference signal sets, and each reference signal set corresponds to a transmission receiving point.
An embodiment of the present invention further provides a beam switching method, which is applied to a network device, and as shown in fig. 3, the method includes:
step 201: and sending a first reference signal set to a terminal, wherein a reference signal in the first reference signal set has a corresponding relation with a transmission receiving point TRP and is used for detecting beam failure.
In this embodiment, the network side device sends the first reference signal set to the terminal, so that the terminal detects the quality of the reference signal in the first reference signal set, and determines whether a beam failure or a partial beam failure occurs.
Optionally, the method further comprises:
and sending a second reference signal set to the terminal, wherein reference signals in the second reference signal set have a corresponding relation with transmission receiving points and are used for discovering alternative beams.
The technical scheme of the invention is further described by combining specific embodiments as follows:
example 1:
in this embodiment, the network side device is a base station, and the base station configures, for the terminal, a reference signal set for detecting beam failure and discovering an alternative beam, and indicates a correspondence between each reference signal and the TRP, and a correspondence between the alternative beam reference signal and a random access opportunity (ra-occupancy), a random access pilot (ra-Preamble), or an ra-Preamble. As follows:
assume that the correspondence between each reference signal configured by the base station and the TRP is as follows:
failureDetectionResources (resources used to detect beam failure):
CRI 0 and CRI 1 Corresponding TRP 1 ，CRI 2 And CRI 3 Corresponding TRP 2 。
CandidateBeamRSList (alternative beam reference signal list):
CRI 0 ,…,CRI 7 corresponding TRP 1 ；
CRI 8 ,…,CRI 15 Corresponding TRP 2 ；
CRI 16 ,…,CRI 23 Corresponding TRP 3 。
The terminal detects the quality of each reference signal in the failureDetectionResources, and the terminal detects the CRI 0 And CRI 1 The number of times that the quality of the reference signal is lower than the threshold value in a certain time window is larger than a preset number threshold value, the TRP is considered 1 A link failure with the terminal, i.e. a partial beam failure occurs; if the terminal detects the CRI 0 ，CRI 1 ，CRI 2 ，CRI 3 If the number of times that the quality of the reference signal is lower than the threshold value in a certain time window is larger than a preset number threshold value, beam failure occurs;
the terminal detects CRI in CandidateBeamRSList 0 ,…,CRI 7 Or CRI 16 ,…,CRI 23 If the quality of the reference signal meets the threshold, the met CRI and the corresponding reference signal quality are sent to a Media Access Control (MAC) layer, and the MAC layer indicates an alternative beamThe reference signal of (a); the terminal sends information according to the ra-Preamble and the ra-occupancy corresponding to the alternative wave beam reference signal;
and the terminal monitors reply information of the base station to partial beam failure or beam failure on the CORESET or the SearchSpace configured by the base station.
Example 2:
in this embodiment, the network side device is a base station, and the base station configures, for the terminal, a reference signal set for detecting a beam failure and discovering an alternative beam, where each reference signal set includes multiple reference signal sets, and each reference signal set is predefined to correspond to one TRP, so as to obtain a corresponding relationship between a reference signal and a TRP, as shown below:
the failureDetectionResources comprise a reference signal Set1 (CSI-RS Resource Set 1) and a reference signal Set2 (CSI-RS Resource Set 2), wherein the reference signal Set1 corresponds to TRP 1 Reference signal set2 corresponds to TRP 2 。
The CandidateBeamRSList includes a reference signal Set1 (CandidateBeamRS Set 1), a reference signal Set2 (CandidateBeamRS Set 2), and a reference signal Set3 (CandidateBeamRS Set 3), wherein the reference signal Set1 corresponds to the TRP 1 Reference signal set2 corresponds to TRP 2 Reference signal set3 corresponds to TRP 3 。
The terminal detects the quality of each reference signal in the failureDetectionResources, and the terminal detects the CRI in the reference signals 0 And CRI 1 The number of times that the quality of the reference signal is lower than the threshold value in a certain time window is larger than a preset number threshold value, the CRI 0 And CRI 1 Belongs to reference Signal set1, considered TRP 1 A link failure with the terminal, i.e. a partial beam failure occurs;
when detecting that the quality of a reference signal in a reference signal set in a CandidateBeamRSList meets a threshold value, a terminal sends the met CRI and the corresponding reference signal quality to a Media Access Control (MAC) layer, and the MAC layer indicates the reference signal of an alternative beam; the terminal sends information according to the ra-Preamble and the ra-Ocvasion corresponding to the alternative wave beam reference signal;
and the terminal monitors the reply information of the base station to the failure of the partial wave beams on the CORESET or the SearchSpace configured by the base station.
The embodiment of the present invention further provides a beam switching apparatus, which is applied to a terminal, as shown in fig. 4, and includes a processor 31 and a transceiver 32,
the processor 31 is configured to detect quality of a reference signal in a first reference signal set to obtain a first quality detection result, where the reference signal in the first reference signal set has a corresponding relationship with a transmission reception point TRP, and is used to detect a beam failure; and judging whether beam failure or partial beam failure occurs according to the first quality detection result.
In this embodiment, a terminal detects the quality of a reference signal in a first reference signal set to obtain a first quality detection result, where the reference signal in the first reference signal set has a correspondence with a transmission receiving point and is used to detect a beam failure, and the terminal may determine whether a beam failure or a partial beam failure occurs according to the first quality detection result.
Optionally, the processor 31 is further configured to detect quality of a reference signal in a second reference signal set to obtain a second quality detection result, where the reference signal in the second reference signal set has a corresponding relationship with a transmission receiving point, and is used to find the candidate beam.
Optionally, the processor 31 is specifically configured to determine that a partial beam failure occurs when the first quality detection result is that the number of times that the quality of all reference signals corresponding to any TRP in the first reference signal set in the preset time window is lower than a first preset threshold is greater than a preset number of times.
Optionally, the transceiver 32 is further configured to receive the first reference signal set configured by a network side device; or
The processor 31 is further configured to determine the first set of reference signals according to a QCL typeD relationship in TCI-State of a set of control resources.
Optionally, the first reference signal set includes a reference signal and a transmission and reception point identifier to which the reference signal belongs; or
The first reference signal set comprises a plurality of reference signal sets, and each reference signal set corresponds to a transmission receiving point.
Optionally, the second reference signal set includes a reference signal and a transmission and reception point identifier to which the reference signal belongs;
the second set of reference signals includes multiple sets of reference signals, each set of reference signals corresponding to a transmission receiving point.
The embodiment of the present invention further provides a beam switching apparatus, which is applied to a network side device, as shown in fig. 5, and includes a processor 41 and a transceiver 42,
the transceiver 42 is configured to send a first set of reference signals to a terminal, where the reference signals in the first set of reference signals have a corresponding relationship with transmission reception points TRP, and are used to detect beam failure.
In this embodiment, the network side device sends the first reference signal set to the terminal, so that the terminal detects the quality of the reference signal in the first reference signal set, and determines whether a beam failure or a partial beam failure occurs.
Optionally, the transceiver 42 is further configured to send a second set of reference signals to the terminal, where the reference signals in the second set of reference signals have a corresponding relationship with transmission receiving points, and are used to find the alternative beam.
An embodiment of the present invention further provides a communication device, including: memory, a processor and a computer program stored on the memory and executable on the processor, the computer program when executed by the processor implementing the steps in the beam switching method as described above.
The communication device may be a network side device or a terminal.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements the steps in the beam switching method described above.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units designed to perform the functions described herein, or a combination thereof.
For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one of skill in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of 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, embodiments of 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.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, user terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 user terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing user terminal device, 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 user terminal equipment to cause a series of operational steps to be performed on the computer or other programmable user terminal equipment to produce a computer implemented process such that the instructions which execute on the computer or other programmable user terminal equipment 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 of these 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 embodiments of the invention.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or user terminal 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 user terminal. Without further limitation, an element defined by the phrases "comprising one of \ 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or user terminal device that comprises the element.
While the foregoing is directed to the preferred embodiment of the present invention, it will be appreciated by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A method for switching beams is applied to a terminal and comprises the following steps:
detecting the quality of a reference signal in a first reference signal set to obtain a first quality detection result, wherein the reference signal in the first reference signal set has a corresponding relation with a transmission receiving point TRP and is used for detecting beam failure; the corresponding relation comprises a plurality of reference signal sets (RS Set) through configuring the first reference signal Set, and each RS Set corresponds to one TRP;
judging whether beam failure or partial beam failure occurs according to the first quality detection result;
detecting the quality of a reference signal in a second reference signal set to obtain a second quality detection result, where the reference signal in the second reference signal set has a correspondence with a transmission receiving point, and is used to find an alternative beam, and the method includes:
the alternative beam reference signal has a corresponding relation with the random access opportunity and the random access pilot frequency, the terminal detects that the quality of the reference signal in the alternative beam reference signal list meets a threshold value, and the MAC layer selects the reference signal of the alternative beam; the terminal sends information according to the random access pilot frequency and the random access opportunity corresponding to the alternative beam reference signal;
or the corresponding relation includes a plurality of reference signal sets by configuring the second reference signal set, each reference signal set corresponds to a transmission reception point TRP, the corresponding relation between the reference signal and the TRP is obtained, the terminal detects that the quality of the reference signal in the reference signal set in the candidate beam reference signal list meets a threshold, and the MAC layer selects the reference signal of the candidate beam; and the terminal sends information according to the random access opportunity and the random access pilot frequency corresponding to the alternative beam reference signal.
2. The method of claim 1, wherein the determining whether the beam failure or the partial beam failure occurs according to the first quality detection result comprises:
and when the first quality detection result is that the number of times that the quality of all reference signals corresponding to any TRP in the first reference signal set in a preset time window is lower than a first preset threshold is greater than a preset number of times, judging that partial beam failure occurs.
3. The beam switching method according to claim 1, wherein before detecting the quality of the reference signals in the first set of reference signals, the method further comprises:
receiving the first reference signal set configured by the network side equipment; or
Determining the first reference signal set according to the relation of TypeD quasi co-located QCL typeD in TCI-State of a control resource set.
4. A beam switching method is applied to a network side device, and comprises the following steps:
sending a first reference signal set to a terminal, wherein reference signals in the first reference signal set have a corresponding relation with Transmission Receiving Points (TRPs) and are used for detecting beam failure; the corresponding relation comprises a plurality of reference signal sets (RS Set) through configuring a first reference signal Set, and each reference signal Set RS Set corresponds to one TRP;
sending a second reference signal set to the terminal, where reference signals in the second reference signal set have a correspondence with transmission receiving points, and are used to discover alternative beams, including:
the alternative beam reference signal has a corresponding relation with the random access opportunity and the random access pilot frequency, the terminal detects that the quality of the reference signal in the alternative beam reference signal list meets a threshold value, and the MAC layer selects the reference signal of the alternative beam; the terminal sends information according to the random access pilot frequency and the random access opportunity corresponding to the alternative beam reference signal;
or the corresponding relation includes a plurality of reference signal sets by configuring the second reference signal set, each reference signal set corresponds to a transmission reception point TRP, the corresponding relation between the reference signal and the TRP is obtained, the terminal detects that the quality of the reference signal in the reference signal set in the candidate beam reference signal list meets a threshold, and the MAC layer selects the reference signal of the candidate beam; and the terminal sends information according to the random access opportunity and the random access pilot frequency corresponding to the alternative beam reference signal.
5. A beam switching device, applied to a terminal, comprises a processor and a transceiver,
the processor is configured to detect quality of a reference signal in a first reference signal set to obtain a first quality detection result, where the reference signal in the first reference signal set has a correspondence with a transmission reception point TRP, and is used to detect beam failure; judging whether beam failure or partial beam failure occurs according to the first quality detection result;
the corresponding relation between the reference signals and the TRP in the first reference signal Set comprises a plurality of reference signal sets (RS Set) through configuration, and each reference signal Set RS Set corresponds to one TRP;
the processor is further configured to detect quality of a reference signal in a second reference signal set to obtain a second quality detection result, where the reference signal in the second reference signal set has a correspondence with a transmission receiving point, and is used to find an alternative beam, and the method includes:
the alternative beam reference signal has a corresponding relation with the random access opportunity and the random access pilot frequency, the terminal detects that the quality of the reference signal in the alternative beam reference signal list meets a threshold value, and the MAC layer selects the reference signal of the alternative beam; the terminal sends information according to the random access pilot frequency and the random access opportunity corresponding to the alternative beam reference signal;
or the corresponding relation includes a plurality of reference signal sets by configuring the second reference signal set, each reference signal set corresponds to a transmission reception point TRP, the corresponding relation between the reference signal and the TRP is obtained, the terminal detects that the quality of the reference signal in the reference signal set in the candidate beam reference signal list meets a threshold, and the MAC layer selects the reference signal of the candidate beam; and the terminal sends information according to the random access opportunity and the random access pilot frequency corresponding to the alternative beam reference signal.
6. The beam switching apparatus according to claim 5, wherein the processor is specifically configured to determine that a partial beam failure occurs when the first quality detection result is that the number of times that the quality of all reference signals corresponding to any TRP in the first reference signal set in the preset time window is lower than a first preset threshold is greater than a preset number of times.
7. The beam switching apparatus according to claim 5,
the transceiver is further configured to receive the first set of reference signals configured by a network-side device; or
The processor is further configured to determine the first set of reference signals according to a QCL typeD relationship in TCI-State of a set of control resources.
8. A beam switching device is applied to a network side device and comprises a processor and a transceiver,
the transceiver is used for sending a first reference signal set to a terminal, wherein reference signals in the first reference signal set have a corresponding relation with Transmission Receiving Points (TRPs) and are used for detecting beam failure;
the corresponding relation between the reference signals and the TRP in the first reference signal Set comprises a plurality of reference signal sets (RS Set) through configuration, and each reference signal Set RS Set corresponds to one TRP;
the transceiver is further configured to send a second set of reference signals to the terminal, where reference signals in the second set of reference signals have a correspondence with transmission receiving points, and the second set of reference signals are used for discovering alternative beams.
9. A communication device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps in the beam switching method as claimed in any one of claims 1 to 4.
10. A computer readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the beam switching method according to any one of claims 1 to 4.
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| CN202211139737.2A CN115473557A (en) | 2019-06-21 | 2019-06-21 | Beam switching method and device and communication equipment |
| CN201910544752.7A CN112118037B (en) | 2019-06-21 | 2019-06-21 | Beam switching method and device and communication equipment |
| PCT/CN2020/097500 WO2020253880A1 (en) | 2019-06-21 | 2020-06-22 | Beam switching method and apparatus, and communication device |
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| WO2022183499A1 (en) * | 2021-03-05 | 2022-09-09 | 北京小米移动软件有限公司 | Beam failure detection method, beam failure detection apparatus, and storage medium |
| WO2024000221A1 (en) * | 2022-06-29 | 2024-01-04 | Qualcomm Incorporated | Transmission configuration indicator state selection for reference signals in multi transmission and reception point operation |
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| KR102107890B1 (en) * | 2017-01-06 | 2020-05-08 | 아서스테크 컴퓨터 인코포레이션 | Method and apparatus for beam management in a wireless communication system |
| US11134492B2 (en) * | 2017-04-12 | 2021-09-28 | Samsung Electronics Co., Ltd. | Method and apparatus for beam recovery in next generation wireless systems |
| CN109089322B (en) * | 2017-06-14 | 2021-01-08 | 维沃移动通信有限公司 | Uplink multi-beam transmission method, terminal and network equipment |
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| CN109803275B (en) * | 2017-11-17 | 2021-04-06 | 维沃移动通信有限公司 | Method, device and system for sending and receiving beam failure recovery request |
| US11050478B2 (en) * | 2017-12-19 | 2021-06-29 | Samsung Electronics Co., Ltd. | Method and apparatus for beam reporting in next generation wireless systems |
| CN110896546B (en) * | 2018-09-13 | 2022-04-22 | 展讯通信（上海）有限公司 | Beam failure recovery method and device, storage medium and user equipment |
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