CN119521279A - Beam failure recovery method and related device - Google Patents
Beam failure recovery method and related device Download PDFInfo
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- CN119521279A CN119521279A CN202311022437.0A CN202311022437A CN119521279A CN 119521279 A CN119521279 A CN 119521279A CN 202311022437 A CN202311022437 A CN 202311022437A CN 119521279 A CN119521279 A CN 119521279A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
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Abstract
The application provides a beam failure recovery method and a related device, which comprise the steps of detecting a beam failure event, determining a first beam group from candidate beam groups preconfigured by network equipment based on a beam quality measurement result, determining a second beam group from a preset beam range under the condition that a target preset condition is met, and sending a beam recovery request to the network equipment, wherein the beam recovery request comprises target beam information, and the target beam information comprises a resource index of a beam in the first beam group and/or a resource index of a beam in the second beam group. The performance and aging of link recovery can be ensured.
Description
Technical Field
The application belongs to the technical field of communication, and particularly relates to a beam failure recovery method and a related device.
Background
Since an analog beam can only transmit a limited number of shaped beams at the same time and the beam width is narrow, it is common to cover only a part of the area of the cell. In order to realize signal coverage of the whole cell, a transmission mode of joint scanning of a plurality of beams in a time domain is needed to realize complete coverage of the cell. For unicast transmissions between a base station and a UE, the maximum link gain that can be achieved when the transmit and receive beams between the base station and the UE are aligned. The process of aligning the transmit and receive beams of the base station and the UE is called beam management. In some of these scenarios, due to environmental changes, the previously established beam pairs are suddenly blocked and the network and terminal have insufficient time to make beam adjustments. To handle such situations, the NR standard defines a set of procedures for handling such beam failures, also known as beam failure recovery (Beam Failure Recovery, BFR). However, since the beam resources configured by the base station for the terminal are limited, when the terminal performs beam failure recovery, it may be difficult to find a suitable new beam in the configured resources, so that only the beam can be selected randomly for recovery later, and the performance and timeliness of link recovery are affected.
Disclosure of Invention
The embodiment of the application provides a beam failure recovery method and a related device, which are used for ensuring the performance and timeliness of link recovery.
In a first aspect, an embodiment of the present application provides a beam failure recovery method, including:
detecting a beam failure event, and determining a first beam group from alternative beam groups preconfigured by the network equipment based on a beam quality measurement result;
Determining a second beam group from the preset beam range under the condition that the target preset condition is met;
And sending a beam recovery request to the network equipment, wherein the beam recovery request comprises target beam information, and the target beam information comprises a resource index of a beam in the first beam group and/or a resource index of a beam in the second beam group.
In a second aspect, an embodiment of the present application provides a beam failure recovery method, including:
Acquiring a beam restoration request from a terminal, wherein the beam restoration request comprises target beam information, the target beam information comprises a resource index of a beam in a first beam group and/or a resource index of a beam in a second beam group, the beam in the first beam group is a beam in an alternative beam group preconfigured by the network equipment and associated with a beam quality measurement result, and the beam in the second beam group is a beam determined from a preset beam range under the condition that a target preset condition is met;
and sending a beam recovery response to the terminal.
In a third aspect, an embodiment of the present application provides a beam failure recovery apparatus, including:
A first acquisition unit, configured to detect a beam failure event, and determine a first beam group from candidate beam groups preconfigured by the network device based on a beam quality measurement result;
a second acquisition unit, configured to determine a second beam group from a preset beam range if a target preset condition is satisfied;
and the sending unit is used for sending a beam recovery request to the network equipment, wherein the beam recovery request comprises target beam information, and the target beam information comprises the resource index of the beam in the first beam group and/or the resource index of the beam in the second beam group.
In a fourth aspect, an embodiment of the present application provides a beam failure recovery apparatus, including:
An obtaining unit, configured to obtain a beam restoration request from a terminal, where the beam restoration request includes target beam information, where the target beam information includes a resource index of a beam in a first beam group and/or a resource index of a beam in a second beam group, where the beam in the first beam group is a beam in an alternative beam group preconfigured by the network device in association with a beam quality measurement result, and the beam in the second beam group is a beam determined from a preset beam range when a target preset condition is satisfied;
and the sending unit is used for sending a beam recovery response to the terminal.
In a fifth aspect, an embodiment of the present application provides a terminal, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, the programs including instructions for performing steps in any of the methods of the first aspect of the embodiments of the present application.
In a sixth aspect, an embodiment of the present application provides a network device, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, the programs including instructions for performing steps in any of the methods of the second aspect of the embodiments of the present application.
In a seventh aspect, embodiments of the present application provide a computer program, wherein the computer program is operable to cause a computer to perform some or all of the steps described in any of the methods of the first aspect of the embodiments of the present application. The computer program may be a software installation package.
In an eighth aspect, an embodiment of the present application provides a chip, including a module for detecting a beam failure event, acquiring a first beam group from candidate beam groups preconfigured by a network device based on a beam quality measurement result, and determining a second beam group from a preset beam range if a target preset condition is met, and a module for sending a beam recovery request to the network device, where the beam recovery request includes target beam information, and the target beam information includes a resource index of a beam in the first beam group and/or a resource index of a beam in the second beam group.
In a ninth aspect, an embodiment of the present application provides a chip, including a module for acquiring a beam restoration request from a terminal, where the beam restoration request includes target beam information, where the target beam information includes a resource index of a beam in a first beam group and/or a resource index of a beam in a second beam group, where the beam in the first beam group is a beam in an alternative beam group preconfigured by the network device associated with a beam quality measurement result, and the beam in the second beam group is a beam determined from a preset beam range if a target preset condition is met, and a module for sending a beam restoration response to the terminal.
In a tenth aspect, embodiments of the present application provide a chip module including a chip as described in the eighth or ninth aspect of the embodiments of the present application.
It can be seen that, in the embodiment of the present application, a terminal detects a beam failure event, first, a first beam group is determined from candidate beam groups preconfigured by a network device based on a beam quality measurement result, then, in case that a target preset condition is satisfied, a second beam group is determined from a preset beam range, and finally, a beam recovery request is sent to the network device, where the beam recovery request includes target beam information, and the target beam information includes a resource index of a beam in the first beam group and/or a resource index of a beam in the second beam group. Therefore, when the terminal performs beam failure recovery, the target beam is determined from the resource group preconfigured by the network equipment, or the target beam can be selected in a beam prediction mode when the target condition is met, so that the performance and timeliness of link recovery can be ensured.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1a is a diagram of a network system architecture according to an embodiment of the present application;
Fig. 1b is a schematic structural diagram of a network device according to an embodiment of the present application;
fig. 1c is a schematic structural diagram of a terminal according to an embodiment of the present application;
Fig. 2a is a schematic flow chart of a beam failure recovery method according to an embodiment of the present application;
FIG. 2b is a schematic representation of a BFR MAC CE provided by an embodiment of the present application;
Fig. 3 is a functional unit composition block diagram of a beam failure recovery apparatus according to an embodiment of the present application;
fig. 4 is a functional unit block diagram of another beam failure recovery apparatus according to an embodiment of the present application;
fig. 5 is a functional unit block diagram of another beam failure recovery apparatus according to an embodiment of the present application;
fig. 6 is a functional block diagram of another beam failure recovery apparatus according to an embodiment of the present application.
Detailed Description
In order to make the present application better understood by those skilled in the art, the following description will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments. In embodiments of the present application, the terms "system" and "network" are often used interchangeably, but the meaning will be understood by those skilled in the art.
First, technical contents related to the embodiments of the present application are explained for easy understanding by those skilled in the art.
Beam failure recovery includes the steps of:
Beam failure detection (beam-failure detection, BFD), the terminal detects that beam failure has occurred. Each time the measured layer 1reference signal received power (layer 1reference signal received power,L1-RSRP) is below a configured threshold, it is referred to as a beam-failure instance. When the number of successive beam failure instances exceeds a configured threshold, the terminal considers that the beam failure is detected and triggers a beam failure recovery procedure.
Alternative beam identification (CANDIDATE BEAM IDENTIFICATION, NBI), the terminal attempts to find a new beam or can recover a new beam pair of connections. If the L1-RSRP exceeds a configured threshold, the terminal considers this beam to be able to be used to resume the connection.
Recovery request transmission (recovery-request transmission), the terminal sends a beam recovery request to the network. If a beam failure is detected and a new candidate beam pair has also been found, the terminal will perform a beam restoration request. The purpose of the recovery request is to inform the network that the beam has failed, and the recovery request may also include information to interrupt the detected alternative beam.
The network responds to the beam restoration request.
In the existing protocol, the alternative beam is considered as the first step of beam failure recovery, the terminal can try to find a new beam pair so as to recover the connection, but because the beam resources configured by the base station for the terminal are limited, when the terminal recovers the beam failure, the terminal can hardly find a proper new beam in the configured resources, so that the beam can only be selected randomly for recovery later, and the performance and timeliness of link recovery are affected.
In order to solve the above problems, embodiments of the present application provide a beam failure recovery method and related apparatus, and the embodiments of the present application are described in detail with reference to the accompanying drawings.
Referring to fig. 1a, fig. 1a is a network system architecture diagram according to an embodiment of the present application. As shown in fig. 1a, the network system includes a network device 120 and a terminal 110. The terminal 110 is configured to initiate a beam failure recovery procedure when a beam failure is detected, and may also perform beam prediction using an AI prediction model when a target condition is satisfied. The network device 120 is configured to respond to the beam restoration request after receiving the beam restoration request of the terminal, so that the terminal completes beam failure restoration.
In the embodiment of the present application, the terminal 110 is a device with a wireless transceiver function. May be referred to as a user equipment (user equi pment, UE), a terminal device, a Mobile Station (MS), a mobile terminal device (mobile ter minal, MT), an access terminal device, an in-vehicle terminal device, an industrial control terminal device, a UE unit, a UE station, a mobile station, a remote terminal device, a mobile device, a UE terminal device, a wireless communication device, a UE agent, or a UE apparatus, etc. The user equipment may be fixed or mobile. It should be noted that the terminal device may support at least one wireless communication technology, such as LTE, new Radio (NR), wideband code division multiple access (wideband code division multiple access, WCDMA), etc. For example, the electronic device may be a mobile phone, a tablet, a desktop, a notebook, a body, a car-mounted terminal, a Virtual Reality (VR) terminal, an augmented reality (au GMENTED REALITY, AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned (SE LF DRIVING), a wireless terminal in tele-surgery (remote medical surgery), a wireless terminal in smart grid (SMART GRID), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (SMART CITY), a wireless terminal in smart home (smart home), a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal DIGITAL ASSISTANT, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a wearable device, a terminal in future mobile communication network, or a public network (public land mobile network) in the future, or an evolving public network, etc. In some embodiments of the present application, the terminal device may also be a device with a transceiver function, such as a chip system. The chip system may include a chip and may also include other discrete devices.
In the embodiment of the present application, the network device is a device that provides a wireless communication function for the user equipment, and may also be referred to as an access network device, an access network element, a radio access network (radio access network, RAN) device, and so on. Wherein the network device may support at least one wireless communication technology, such as LTE, NR, WCDMA, etc. By way of example, access network devices include, but are not limited to, next generation base stations (gNB), evolved node Bs (eNBs), radio network controllers (radio network controller, RNC), node Bs (NB), base station controllers (base station controller, BSC), base transceiver stations (base transceiver station, BTS), home base stations (e.g., home evolved node B, or home node B, HNB), baseband units (BBU), transmit-receive points (TRANSMITTING AND RECEIVING point, TRP), transmit points (TRANSMITTING POINT, TP), mobile switching centers, and the like in a fifth generation mobile communication system (5 th-generation, 5G). The network device may also be a wireless controller, a centralized unit (centralized unit, CU), and/or a Distributed Unit (DU) in the cloud wireless access network (cloud radio access network, CRAN) scenario, or the network device may be a relay station, an access point, a vehicle device, a terminal device, a wearable device, and an access network device in future mobile communications or an access network device in a future evolved PLMN, etc. In some embodiments, the network device may also be an apparatus, such as a system-on-a-chip, having wireless communication functionality for providing the user device. By way of example, the chip system may include a chip, and may also include other discrete devices.
As shown in the schematic structure of the network device 120 in fig. 1b, the network device 120 comprises a processor 210, a memory 220, a communication interface 230, and one or more programs 221, said one or more programs 221 being stored in said memory 220 and configured to be executed by said processor 210, said programs 221 comprising operations to be performed by a device on the network side in a method as described in the method embodiments of the present application.
As shown in the schematic structure of the terminal 110 in fig. 1c, the terminal 110 comprises a processor 310, a memory 320, a communication interface 330, and one or more programs 321, said one or more programs 321 being stored in said memory 320 and configured to be executed by said processor 310, said programs 321 comprising operations to be performed by a terminal-side device in a method according to an embodiment of the method of the application.
Referring to fig. 2a, fig. 2a is a flow chart of a beam failure recovery method according to an embodiment of the application. As shown in fig. 2a, the beam failure recovery method includes the following steps.
In step 201, the terminal detects a beam failure event, and determines a first beam group from the candidate beam groups preconfigured by the network device based on the beam quality measurement result.
The network device configures a resource group in advance for the terminal, where the resource group includes a set of Channel-state-information (CSI-RS) reference signals REFERENCE SIGNALS or a set of synchronization signal blocks (Synchronization Signal Block, SSB). The reference signals each correspond to a particular downlink beam, and thus essentially the set of resources corresponds to a set of alternative beams. And when the terminal recovers the beam failure, the terminal performs quality measurement on the beams in the alternative beam group so as to select a first beam group. The number of beams in the first beam set may comprise one or more or 0.
In one possible example, the beam quality in the first beam set is greater than or equal to a first threshold.
The terminal may measure beam quality of M beams in the candidate beam set, and if the beam quality is greater than or equal to a first threshold, add the beam to the first beam set. Optionally, the terminal selects one or more beams with the best beam quality as the beams in the first beam group according to the beam measurement result. The maximum value of the number of beams in the first beam group may also be determined in advance, and if the number of beams in the first beam group reaches the maximum value, the terminal stops the beam measurement. The M may refer to the number of all beams in the candidate beam set, or may be a fixed value. If the quality of all the beams in the candidate beam set is less than the first threshold, the first beam set is empty, i.e. no beam is included in the first beam set.
The beam quality may be measured by parameters such as reliability, reference signal quality (RSRQ), signal-to-noise ratio (SNR), signal-to-interference-and-noise ratio (signal to interference plus noise ratio, SINR), block error rate (BLER), etc.
Step 202, in the case that the target preset condition is met, the terminal determines a second beam group from the preset beam range.
The terminal can determine the second beam group from the preset beam range through a beam quality prediction mode, wherein the prediction mode comprises that the terminal predicts the beam quality in the preset beam range through an artificial intelligence AI prediction model. The preset beam range may be a predictable range configured in advance by the network device, or may be a predictable beam range autonomously determined by an AI prediction model, where the AI prediction model may be determined according to an environment in which the terminal is currently located when the AI prediction model autonomously determines the predicted beam range.
The beams within the predetermined beam range may not coincide with the beams in the set of alternative beams or the predetermined beam range may include some or all of the beams in the set of alternative beams. The number of beams in the second beam set may comprise one or more. That is, the beams in the second beam group may be the N first beams ranked after predicting the beam quality in the preset beam range, or the N beams whose beam quality satisfies the condition, or all the beams whose beam quality satisfies the condition. Or the measured beam quality does not meet the condition, the number of beams in the second beam group is 0. The satisfaction condition may mean that the beam quality is greater than or equal to a preset threshold, and the preset threshold may be two thresholds described below or may be different from the second threshold. I.e. the beam quality in the second beam set may be greater than or equal to the second threshold.
In one possible example, the target preset condition includes a first preset condition and/or a second preset condition, where the first preset condition is associated with a terminal, and the second preset condition is associated with the network device.
When the target preset condition includes a first preset condition, if the first preset condition is met, the terminal determines a second beam group from a preset beam range, that is, the terminal acquires the second beam group from the preset beam range based on the AI prediction model. When the target preset condition includes a second preset condition, if the second preset condition is satisfied, the terminal determines a second beam group from the preset beam range, that is, the terminal acquires the second beam group from the preset beam range based on the AI prediction model. When the target preset condition includes the first preset condition and the second preset condition at the same time, the terminal determines the second beam group from the preset beam range only when the first preset condition and the second preset condition need to be satisfied at the same time.
Because the first preset condition is associated with the terminal and the second preset condition is associated with the network device, the terminal can be triggered by the terminal to conduct beam prediction when the beam failure recovery is conducted, or the network device is triggered to conduct beam prediction, or the terminal and the network device are triggered to conduct beam prediction simultaneously.
In this example, whether the terminal performs beam prediction may be triggered by multiple mechanisms, so as to improve flexibility of a mode of selecting a beam to be reported by the terminal.
In one possible example, the method includes determining whether a number of beams in the first beam group having a beam quality greater than or equal to the first threshold is less than a preset value, and if so, determining that the first preset condition is met.
After triggering the beam failure flow, the terminal firstly measures the resources in the resource group configured in advance by the network equipment to obtain a first beam group. And determining whether a first preset condition is met according to the beam quality in the first beam group. The preset value may be 1, that is, as long as the number of beams having a beam quality greater than or equal to the first threshold included in the first beam group is 0, that is, there is no beam having a beam quality greater than or equal to the first threshold, and it may be considered that the first beam group is empty, the first preset condition is considered to be satisfied. The preset value may also be preset by the terminal or the network device, so that when it is determined that the number of beams with the beam quality greater than or equal to the first threshold in the first beam group is small, the first preset condition is considered to be satisfied.
Optionally, when the target preset condition includes a first preset condition, and no beam with a beam quality greater than or equal to a first threshold exists in the first beam group, performing beam prediction in a preset beam range by using an AI prediction model, so as to obtain a second beam group. If the first preset condition is not met, the terminal does not use AI prediction, and beam failure recovery is performed according to the original mode. The method for acquiring the beam to be reported in the original beam failure recovery method is that the terminal selects one beam from the beams meeting the first threshold condition to perform beam failure recovery.
In one possible example, the network device obtains capability report information from the terminal, where the capability report information is used to indicate whether the terminal supports determining the second beam set, the network device sends indication information to the terminal according to the capability report information, the terminal obtains indication information from the network device, where the indication information is used to indicate whether the terminal needs to determine the second beam set, and determines that the second preset condition is met if the indication information indicates that the terminal needs to determine the second beam set.
The terminal may report the capability to the network device in advance, and inform the network device whether the terminal has the capability of determining the second beam group from the preset beam range, and if the terminal supports the capability, the network device may send indication information indicating that the terminal determines the second beam group from the preset range after detecting the beam failure to the terminal.
In a specific implementation, the indication information sent by the network device may be used to indicate whether the terminal uses the AI prediction model, so that the terminal may determine the second beam group based on the AI prediction model. The indication content of the indication information can be determined according to the historical prediction result of the AI prediction model and/or the current environment of the terminal and/or the beam range included by the alternative beam group besides the capability of the terminal. I.e. when the network device knows that the terminal has AI prediction capability, it can instruct the terminal to use AI prediction, otherwise it instructs not to use AI prediction model. The network device may also evaluate the historical prediction result after knowing that the terminal has the AI prediction capability, and determine whether to instruct to use the AI prediction model according to the evaluation result. It is also possible that if the range of the candidate beam set is sufficiently large, the network device indicates that the AI prediction model is not used even if the terminal has AI prediction capability.
It can be seen that, when the target preset condition includes only the second preset condition, if the network device instructs the terminal to determine the second beam group, the terminal may perform beam prediction in the beam failure recovery process.
When the target preset condition includes the first preset condition and the second preset condition at the same time, the indication information of the network device needs to be satisfied at the same time to indicate that the terminal needs to determine the second beam group, and the number of beams with the beam quality greater than or equal to the first threshold value in the first beam group is smaller than the preset value, the terminal can determine the second beam group, namely, the terminal uses the AI prediction model to perform beam prediction.
In one possible example, the network device sends configuration information of the alternative beam group to the terminal, wherein the terminal obtains the configuration information of the alternative beam group from the network device, and the configuration information comprises the indication information.
Wherein the network device may introduce a parameter to indicate whether the terminal needs to determine the second beam set, i.e. whether the terminal needs to use the AI prediction model, while configuring the alternative beam set to the terminal.
And 203, the terminal sends a beam restoration request to the network equipment.
And step 204, the network equipment sends a beam restoration response to the terminal.
The beam recovery request comprises target beam information, and the target beam information comprises a resource index of a beam in the first beam group and/or a resource index of a beam in the second beam group. The target beam information is used for the terminal to execute beam failure recovery, each resource index corresponds to one beam, and the target beam information comprises a beam obtained by measuring the beam quality in the alternative beam group, or comprises a beam obtained from a preset beam range, or comprises a beam obtained by measuring and a beam obtained from the preset beam range at the same time.
In a specific implementation, if the target preset condition is not met, the terminal does not determine the second beam group from the preset beam range when performing beam failure recovery, that is, does not use the AI prediction model, and only includes the content of the first beam group in the target beam information.
In one possible example, the method includes carrying the target beam information through a preset resource, where the preset resource includes a first indication field, and the first indication field is used to indicate whether the terminal determines the second beam group.
The preset resource may be a medium access control-control element (medium access control-control element, MAC-CE) or a physical uplink control channel (Physical Uplink Control Channel, PUCCH). If the first indication field indicates that the terminal has determined the second beam combination, this means that the terminal has performed beam prediction, that is, an AI prediction model is used.
In particular, if the indication information sent by the network device indicates that the terminal does not need to determine the second beam group, the preset resource may not include the first indication field.
In a specific implementation, when the target beam information is carried by the MAC-CE pulling force, as shown in fig. 2b, fig. 2b is a thumbnail of a BFR MAC CE according to an embodiment of the present application. The field in the BFR MAC CE is defined as SP, which indicates the cell for which beam fault detection is used for the MAC entity. Ci, which indicates whether beam failure occurs in the corresponding cell, ci, which is set to 1, indicates that beam failure is detected, ci, which is set to 0, indicates that beam failure is not detected, and AC, which indicates that a candidate RS ID (CANDIDATE RS ID) field exists in the octet. The AC field is set to 1 if there are candidate beams and to 0 otherwise. If the AC field is set to 1, then there is a candidate RS ID field and the candidate selected beam index (i.e., the target beam index in this scenario) will be reported at CANDIDATE RS ID. If the AC field is set to 0, there is an R bit, and the candidate RS ID is set to the index of the candidate SSB or the index of the CSI-RS. R, reserved bit. At this time, a new field (field) indicating whether the terminal uses the AI prediction mode may be further introduced in the MAC-CE. For example, if the first indication field is 0, it indicates that the AI prediction model is not used, and if it is 1, it indicates that the AI prediction model is used.
In a possible example, the preset resource includes a second indication field, where the second indication field is used to indicate whether each beam corresponding to the target beam information is measured or not.
Since the target beam group may include beams that are not measured, it may be determined whether each beam corresponding to the target beam information is measured or not through a second indication field (field) in the preset resource. The beams that are not measured may be beams from the candidate beam set, i.e. the terminal only measures part of the beams in the candidate beam set, or may be beams determined from a preset beam range.
In a specific implementation, the preset resource may also include a first indication domain and a second indication domain at the same time.
In one possible example, the preset resource includes a third indication field, where the third indication field is used to indicate whether each beam corresponding to the target beam information is a beam in the candidate beam group, respectively.
If the indication information sent by the network device indicates that the terminal does not need to determine the second beam group, the preset resource may not include the third indication domain, that is, since the AI prediction model is not used, all beams corresponding to the target beam information are beams belonging to the candidate beam group.
In a specific implementation, in the case that the terminal measures all the beams in the candidate beam group, the preset resource may not include the third indication field, that is, whether each beam is a beam in the candidate beam group may be determined simultaneously through the second indication field. In this case, if the second indication field indicates that the beam is measured, the beam is a beam in the alternative beam group, and vice versa, the beam determined by the AI prediction model.
In case the terminal measures part of the beams of the alternative beam group, it is necessary to indicate by the third indication field whether each beam is in the alternative beam group, since the beams in the preset beam range may coincide with the beams in the alternative beam group.
In a specific implementation, the preset resource may also include a second indication domain and a third indication domain at the same time, and include a first indication domain and a second indication domain and a third indication domain at the same time.
In one possible example, the method further comprises acquiring a first beam quality of each beam in the first beam group and a second beam quality of each beam in the second beam group, respectively, and determining a target resource index included in the target beam information according to the first beam quality and the second beam quality, wherein the target resource index is a resource index of a beam in the first beam group and/or a resource index of a beam in the second beam group.
After the first beam group and the second beam group are acquired, it is necessary to determine which beams to report, and at this time, the beams to report may be determined according to the measured beam quality and the predicted beam quality, respectively. The reported beam may be only the measured beam, may be only the predicted beam, or may include both the measured beam and the predicted beam.
In one possible example, the determining the target resource index included in the target beam information from the first beam quality and the second beam quality includes determining that the target resource index includes a resource index of a beam in the first beam group if there is the first beam quality greater than or equal to a first threshold.
Only one beam can be reported by the terminal, and the terminal reports the resource index in the beam which is measured to meet the first threshold only when the measured beam quality is greater than or equal to the first threshold.
Specifically, the reported resource index may be the resource index of the beam with the best beam quality in the measured beams.
In one possible example, the target resource index includes K, where K is a positive integer.
Wherein, a plurality of new wave beams can be reported under one cell. When the terminal reports the resource indexes of the beams, the terminal can report the resource indexes of K beams with the best quality in the acquired beams. The K beams may be beams from both the first beam set and the second beam set, or may be beams from the first beam set alone or beams from the second beam set.
In one possible example, the determining the target resource index included in the target beam information according to the first beam quality and the second beam quality includes determining that the target resource index includes a resource index of a beam with the best beam quality in the first beam group and a resource index of K-1 beams with the best beam quality in the second beam group when the first beam quality is greater than or equal to a first threshold and the second beam quality is greater than or equal to a second threshold.
It should be noted that the first threshold value and the second threshold value may be the same value, and the first threshold value and the second threshold value may also be different, and in a specific implementation, the second threshold value may be higher than the first threshold value.
In a specific implementation, under the condition that the quality of the first beam is lower than that of the second beam, the best quality of the measured beams and the resource indexes of K-1 predicted beams can be reported at the same time. The first beam quality is lower than the second beam quality including the best beam quality in the first beam set being lower than the best beam quality in the second beam set. Or the number of beam quality in the first beam set being higher than the best beam quality in the second beam set is less than a preset value. Or the average beam quality of the first beam set is lower than the average beam quality of the second beam set, etc.
In a specific implementation, the resource index of the K-1 predicted beams and one with the best quality in the measured beams can be reported at the same time under the condition that the quality of the first beam is equal to that of the second beam. The first beam quality is equal to the second beam quality including that the best beam quality in the first beam set is equal to the best beam quality in the second beam set.
In one possible example, the determining the target resource index included in the target beam information according to the first beam quality and the second beam quality includes determining that the target resource index includes resource indexes of K beams with the best beam quality in the second beam group when the first beam group is null and the second beam quality is greater than or equal to the second threshold.
If the first beam group is empty, it means that the measured beam quality is smaller than the first threshold, and at this time, the beam quality of at least one beam in the predicted beams is greater than or equal to the second threshold, and the resource indexes of the best K beams in the prediction are reported.
In a specific implementation, when the beam quality in the second beam group is greater than the second threshold, and the first beam group is empty, if the number L of beams included in the second beam group is less than K, the terminal may report the resource indexes of the beams in the L second beam groups.
It can be seen that, in this example, the terminal detects a beam failure event, first determines, based on a beam quality measurement result, a first beam group from among candidate beam groups preconfigured by the network device, then determines, if a target preset condition is met, a second beam group from among preset beam ranges, and finally sends a beam recovery request to the network device, where the beam recovery request includes target beam information, and the target beam information includes a resource index of a beam in the first beam group and/or a resource index of a beam in the second beam group. Therefore, when the terminal performs beam failure recovery, the target beam is determined from the resource group preconfigured by the network equipment, or the target beam can be selected in a beam prediction mode when the target condition is met, so that the performance and timeliness of link recovery can be ensured.
The embodiment of the application provides a beam failure recovery device, which is used for executing the steps executed by a terminal in the beam failure recovery method. The beam failure recovery device provided by the embodiment of the application can comprise units corresponding to the corresponding steps.
The embodiment of the application can divide the functional modules of the beam failure recovery device according to the method, for example, each functional module can be divided corresponding to each function, and two or more functions can be integrated in one processing module. The integrated modules may be implemented in hardware or in software functional modules. The division of the modules in the embodiment of the application is schematic, only one logic function is divided, and other division modes can be adopted in actual implementation.
In the case of dividing each functional module by using the corresponding each function, as shown in fig. 3, fig. 3 is a functional unit composition block diagram of a beam failure recovery apparatus provided in an embodiment of the present application. The beam failure recovery device 30 comprises a first acquisition unit 301, a second acquisition unit 302 and a sending unit 303, wherein the first acquisition unit is used for detecting a beam failure event, the first acquisition unit is used for determining a first beam group from alternative beam groups preconfigured by a network device based on a beam quality measurement result, the second acquisition unit 302 is used for determining a second beam group from a preset beam range when a target preset condition is met, the sending unit 303 is used for sending a beam recovery request to the network device, the beam recovery request comprises target beam information, and the target beam information comprises resource indexes of beams in the first beam group and/or resource indexes of beams in the second beam group.
In one possible example, the target preset condition includes a first preset condition and/or a second preset condition, where the first preset condition is associated with a terminal, and the second preset condition is associated with the network device.
In one possible example, the beam quality in the first beam set is greater than or equal to a first threshold.
In a possible example, the beam failure recovery device 30 is further configured to determine whether the number of beams in the first beam group with the beam quality greater than or equal to the first threshold is less than a preset value, and if so, determine that the first preset condition is met.
In a possible example, the beam failure recovery device 30 is further configured to obtain indication information from the network device, where the indication information is used to indicate whether the terminal needs to determine the second beam group, and determine that the second preset condition is met if the indication information indicates that the terminal needs to determine the second beam group.
In one possible example, in the acquiring indication information from the network device, the beam failure recovery device 30 is further configured to acquire configuration information of the alternative beam group from the network device, where the configuration information includes the indication information.
In a possible example, the beam failure recovery device 30 is further configured to carry the target beam information through a preset resource, where the preset resource includes a first indication field, and the first indication field is used to indicate whether the terminal determines the second beam group.
In a possible example, the preset resource includes a second indication field, where the second indication field is used to indicate whether each beam corresponding to the target beam information is measured or not.
In one possible example, the preset resource includes a third indication field, where the third indication field is used to indicate whether each beam corresponding to the target beam information is a beam in the candidate beam group, respectively.
In a possible example, the beam failure recovery device 30 is further configured to obtain a first beam quality of each beam in the first beam group and a second beam quality of each beam in the second beam group, and determine a target resource index included in the target beam information according to the first beam quality and the second beam quality, where the target resource index is a resource index of a beam in the first beam group and/or a resource index of a beam in the second beam group.
In one possible example, in respect of said determining a target resource index comprised in said target beam information from said first beam quality and said second beam quality, said beam failure recovery means 30 is further adapted to determine that said target resource index comprises a resource index of a beam in said first beam group in case there is said first beam quality being greater than or equal to a first threshold.
In one possible example, the target resource index includes K, where K is a positive integer.
In a possible example, in terms of said determining the target resource index included in the target beam information according to the first beam quality and the second beam quality, the beam failure recovery means 30 is further configured to determine that the target resource index includes the resource index of the beam with the best beam quality in the first beam group and the resource index of the K-1 beams with the best beam quality in the second beam group, in case that the first beam quality is greater than or equal to a first threshold and that the second beam quality is greater than or equal to a second threshold.
In a possible example, in the determining the target resource index included in the target beam information according to the first beam quality and the second beam quality, the beam failure recovery device 30 is further configured to determine that the target resource index includes resource indexes of K beams with the best beam quality in the second beam group when the first beam group is null and the second beam quality is greater than or equal to the second threshold.
All relevant contents of each step related to the above method embodiment may be cited to the functional description of the corresponding functional unit, and are not described herein. Of course, the beam failure recovery device provided by the embodiment of the application comprises but is not limited to the units described above, for example, the beam failure recovery device can also comprise a storage unit. The memory unit may be used for storing program codes and data of the beam failure recovery apparatus.
In the case of using integrated units, a functional unit composition block diagram of another beam failure recovery apparatus provided in an embodiment of the present application is shown in fig. 4. In fig. 4, the beam failure recovery apparatus 30 includes a processing module 31 and a communication module 32. The processing module 31 is configured to control and manage actions of the beam failure recovery apparatus, for example, steps performed by the first acquisition unit 301, the second acquisition unit 302, and the transmission unit 303, and/or other processes for performing the techniques described herein. The communication module 32 is used to support interactions between the beam failure recovery apparatus and other devices. As shown in fig. 4, the beam failure recovery device 30 may further include a storage module 33, where the storage module 33 is configured to store program codes and data of the beam failure recovery device, for example, the content stored in the storage unit.
The processing module 31 may be a Processor or a controller, such as a central processing unit (Central Processing Unit, CPU), a general purpose Processor, a digital signal Processor (DIGITAL SIGNAL Processor, DSP), an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules and circuits described in connection with this disclosure. The processor may also be a combination that performs the function of a computation, e.g., a combination comprising one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication module 32 may be a transceiver, an RF circuit, or a communication interface, etc. The memory module 33 may be a memory.
All relevant contents of each scenario related to the above method embodiment may be cited to the functional description of the corresponding functional module, which is not described herein. The beam failure recovery apparatus 30 may perform the steps performed by the terminal in the beam failure recovery method shown in fig. 2 a.
The embodiment of the application provides a beam failure recovery device, which is used for executing the steps executed by network equipment in the beam failure recovery method. The beam failure recovery device provided by the embodiment of the application can comprise units corresponding to the corresponding steps.
The embodiment of the application can divide the functional modules of the beam failure recovery device according to the method, for example, each functional module can be divided corresponding to each function, and two or more functions can be integrated in one processing module. The integrated modules may be implemented in hardware or in software functional modules. The division of the modules in the embodiment of the application is schematic, only one logic function is divided, and other division modes can be adopted in actual implementation.
In the case of dividing each functional module by using a corresponding function, as shown in fig. 5, fig. 5 is a functional unit block diagram of another beam failure recovery apparatus according to an embodiment of the present application. The beam failure recovery device 40 includes an acquisition unit 401 configured to acquire a beam recovery request from a terminal, where the beam recovery request includes target beam information, where the target beam information includes a resource index of a beam in a first beam group and/or a resource index of a beam in a second beam group, where the beam in the first beam group is a beam in an alternative beam group preconfigured by the network device in association with a beam quality measurement result, and the beam in the second beam group is a beam determined from a preset beam range if a target preset condition is satisfied, and a transmission unit 402 configured to transmit a beam recovery response to the terminal.
In a possible example, the beam failure recovery device 40 is further configured to obtain capability report information from the terminal, where the capability report information is used to indicate whether the terminal supports determining the second beam set, and send indication information to the terminal according to the capability report information, where the indication information is used to indicate whether the terminal needs to determine the second beam set.
In a possible example, in the aspect of sending indication information to the terminal according to the capability report information, the beam failure recovery device 40 is further configured to send configuration information of the alternative beam group to the terminal, where the configuration information includes the indication information.
All relevant contents of each step related to the above method embodiment may be cited to the functional description of the corresponding functional unit, and are not described herein. Of course, the beam failure recovery device provided by the embodiment of the application comprises but is not limited to the units described above, for example, the beam failure recovery device can also comprise a storage unit. The memory unit may be used for storing program codes and data of the beam failure recovery apparatus.
In the case of using integrated units, a functional unit composition block diagram of another beam failure recovery apparatus provided in an embodiment of the present application is shown in fig. 6. In fig. 6, the beam failure recovery apparatus 40 includes a processing module 41 and a communication module 42. The processing module 41 is configured to control and manage actions of the beam failure recovery apparatus, e.g., steps performed by the acquisition unit 401 and the transmission unit 402, and/or other processes for performing the techniques described herein. The communication module 42 is used to support interactions between the beam failure recovery apparatus and other devices. As shown in fig. 6, the beam failure recovery apparatus 40 may further include a storage module 43, where the storage module 43 is configured to store program codes and data of the beam failure recovery apparatus, for example, the contents stored in the storage unit.
The processing module 41 may be a Processor or a controller, such as a central processing unit (Central Processing Unit, CPU), a general purpose Processor, a digital signal Processor (DIGITAL SIGNAL Processor, DSP), an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules and circuits described in connection with this disclosure. The processor may also be a combination that performs the function of a computation, e.g., a combination comprising one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication module 42 may be a transceiver, an RF circuit, or a communication interface, etc. The storage module 43 may be a memory.
All relevant contents of each scenario related to the above method embodiment may be cited to the functional description of the corresponding functional module, which is not described herein. The beam failure recovery apparatus 40 may perform the steps performed by the network device in the beam failure recovery method shown in fig. 2 a.
The embodiment of the application also provides a chip, wherein the chip comprises a processor, and the processor is used for calling and running a computer program from a memory, so that a device provided with the chip executes part or all of the steps described by the terminal in the embodiment of the method.
The embodiment of the application also provides a chip module which comprises a receiving and transmitting component and a chip, wherein the chip comprises a processor and is used for calling and running a computer program from a memory, so that a device provided with the chip executes part or all of the steps described by the terminal in the embodiment of the method.
The embodiment of the application also provides a chip, which comprises a module for detecting a beam failure event and acquiring a first beam group from alternative beam groups preconfigured by network equipment based on a beam quality measurement result, a module for determining a second beam group from a preset beam range under the condition that a target preset condition is met, and a module for sending a beam recovery request to the network equipment, wherein the beam recovery request comprises target beam information, and the target beam information comprises resource indexes of beams in the first beam group and/or resource indexes of beams in the second beam group.
The embodiment of the application also provides a chip module which comprises a receiving and transmitting component and a chip,
The chip comprises a module for detecting a beam failure event, a module for acquiring a first beam group from alternative beam groups preconfigured by network equipment based on a beam quality measurement result, a module for determining a second beam group from a preset beam range when a target preset condition is met, and a module for sending a beam recovery request to the network equipment, wherein the beam recovery request comprises target beam information, and the target beam information comprises a resource index of a beam in the first beam group and/or a resource index of a beam in the second beam group.
The embodiment of the application also provides a chip, which comprises a module for acquiring a beam recovery request from a terminal, wherein the beam recovery request comprises target beam information, the target beam information comprises a resource index of a beam in a first beam group and/or a resource index of a beam in a second beam group, the beam in the first beam group is a beam in an alternative beam group preconfigured by the network equipment and is associated with a beam quality measurement result, the beam in the second beam group is a beam determined from a preset beam range under the condition that a target preset condition is met, and a module for sending a beam recovery response to the terminal.
The embodiment of the application also provides a chip, which comprises a module for acquiring a beam recovery request from a terminal, wherein the beam recovery request comprises target beam information, the target beam information comprises a resource index of a beam in a first beam group and/or a resource index of a beam in a second beam group, the beam in the first beam group is a beam in an alternative beam group preconfigured by the network equipment and is associated with a beam quality measurement result, the beam in the second beam group is a beam determined from a preset beam range under the condition that a target meets a preset condition, and a module for sending a beam recovery response to the terminal.
The embodiment of the application also provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program for electronic data exchange, and the computer program makes a computer execute part or all of the steps described by the network side device in the embodiment of the method.
Embodiments of the present application also provide a computer program product, wherein the computer program product comprises a computer program operable to cause a computer to perform some or all of the steps described by the terminal in the above method embodiments. The computer program product may be a software installation package.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, or may be embodied in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in random access Memory (Random Access Memory, RAM), flash Memory, read Only Memory (ROM), erasable programmable Read Only Memory (Erasable Programmable ROM), electrically Erasable Programmable Read Only Memory (EEPROM), registers, hard disk, a removable disk, a compact disk Read Only Memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in an access network device, a target network device, or a core network device. It is of course also possible that the processor and the storage medium reside as discrete components in an access network device, a target network device, or a core network device.
Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented, in whole or in part, in software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., digital video disc (Digital Video Disc, DVD)), or a semiconductor medium (e.g., solid state disk (Solid STATE DISK, SSD)), etc.
The foregoing detailed description of the embodiments of the present application further illustrates the purposes, technical solutions and advantageous effects of the embodiments of the present application, and it should be understood that the foregoing description is only a specific implementation of the embodiments of the present application, and is not intended to limit the scope of the embodiments of the present application, and any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the scope of the embodiments of the present application.
Claims (26)
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