Failure detection procedures
By adjusting timers and instance counts based on reference signal configuration changes, the method enhances beam and radio link failure detection in wireless communication systems, addressing dynamic challenges and improving network performance and energy efficiency.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-10-03
- Publication Date
- 2026-04-09
AI Technical Summary
Existing wireless communication systems face challenges in efficiently detecting beam and radio link failures due to dynamic changes in reference signal configurations, such as SSB burst periodicity, leading to ambiguous UE behavior and suboptimal failure detection procedures.
A method and apparatus that enable wireless devices to receive detection configurations for beam or radio link failures, allowing them to adjust timers and instance counts based on changes in reference signal configurations, ensuring appropriate UE behavior and enhanced failure detection.
The solution ensures accurate and timely detection of beam and radio link failures by adapting failure detection timers and counts in response to dynamic reference signal changes, improving network performance and energy efficiency.
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Figure CN2024123216_09042026_PF_FP_ABST
Abstract
Description
FAILURE DETECTION PROCEDURES
[0001] FIELDS
[0002] Various example embodiments of the present disclosure generally relate to the field of telecommunication and in particular, to methods, devices, apparatuses and computer readable storage medium for failure detection procedure.BACKGROUND
[0003] A wireless device may perform a beam failure detection (BFD) procedure based on performing measurements reference signals (RSs) , such as, channel state information (CSI) -reference signal (RS) , CRI-RS, synchronization signal and physical broadcast channel (PBCH) block, SSB. When the measurement results satisfies a beam failure reporting condition, UE may transmit a beam failure report to the network, such that a beam failure recovery (BFR) may be performed. In addition, a wireless device also may assistant radio link management (RLM) , such as, performing radio link failure (RLF) detection.SUMMARY
[0004] In a first aspect of the present disclosure, there is provided a first apparatus. The first apparatus comprises at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the first apparatus at least to: receive, from a second apparatus, a detection configuration for at least one of a beam failure or a radio link failure associated with at least one reference signal; and in accordance with a determination of a change of a configuration of the at least one reference signal, perform, at least based on the change and the detection configuration, one or more operations associated with the detection of the at least one reference signal on at least one of the following: at least one timer associated with the beam failure detection or radio link failure, or a beam failure instance count.
[0005] In a second aspect of the present disclosure, there is provided a method. The method comprises: receiving, from a second apparatus, a detection configuration for at least one of a beam failure or a radio link failure associated with at least one reference signal; and in accordance with a determination of a change of a configuration of the at least one reference signal, performing at least based on the change and the detection configuration, one or more operations associated with the detection of the at least one reference signal on at least one of the following: at least one timer associated with the beam failure detection or radio link failure, or a beam failure instance count.
[0006] In a third aspect of the present disclosure, there is provided a first apparatus. The first apparatus comprises means for receiving, from a second apparatus, a detection configuration for at least one of a beam failure or a radio link failure associated with at least one reference signal; and means for in accordance with a determination of a change of a configuration of the at least one reference signal, performing at least based on the change and the detection configuration, one or more operations associated with the detection of the at least one reference signal on at least one of the following: at least one timer associated with the beam failure detection or radio link failure, or a beam failure instance count.
[0007] In a fourth aspect of the present disclosure, there is provided a computer readable medium. The computer readable medium comprises instructions stored thereon for causing an apparatus to perform at least the method according to the second aspect.
[0008] It is to be understood that the Summary section is not intended to identify key or essential features of embodiments of the present disclosure, nor is it intended to be used to limit the scope of the present disclosure. Other features of the present disclosure will become easily comprehensible through the following description.BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Some example embodiments will now be described with reference to the accompanying drawings, where:
[0010] FIG. 1 illustrates an example communication environment in which example embodiments of the present disclosure can be implemented;
[0011] FIG. 2 illustrates a signaling flow of communication in accordance with some embodiments of the present disclosure;
[0012] FIG. 3 illustrates another signaling flow of communication in accordance with some embodiments of the present disclosure;
[0013] FIG. 4 illustrates a flowchart of a method implemented at a first apparatus in accordance with some example embodiments of the present disclosure;
[0014] FIG. 5 illustrates a simplified block diagram of a device that is suitable for implementing example embodiments of the present disclosure; and
[0015] FIG. 6 illustrates a block diagram of an example computer readable medium in accordance with some example embodiments of the present disclosure.
[0016] Throughout the drawings, the same or similar reference numerals represent the same or similar element.DETAILED DESCRIPTION
[0017] Principle of the present disclosure will now be described with reference to some example embodiments. It is to be understood that these embodiments are described only for the purpose of illustration and help those skilled in the art to understand and implement the present disclosure, without suggesting any limitation as to the scope of the disclosure. Embodiments described herein can be implemented in various manners other than the ones described below.
[0018] In the following description and claims, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skills in the art to which this disclosure belongs.
[0019] References in the present disclosure to “one embodiment, ” “an embodiment, ” “an example embodiment, ” and the like indicate that the embodiment described may include a particular feature, structure, or characteristic, but it is not necessary that every embodiment includes the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
[0020] It shall be understood that although the terms “first, ” “second” and the like may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and similarly, a second element could be termed a first element, without departing from the scope of example embodiments. As used herein, the term “and / or” includes any and all combinations of one or more of the listed terms.
[0021] As used herein, “at least one of the following: <a list of two or more elements>” and “at least one of <a list of two or more elements>” and similar wording, where the list of two or more elements are joined by “and” or “or” , mean at least any one of the elements, or at least any two or more of the elements, or at least all the elements.
[0022] As used herein, unless stated explicitly, performing a step “in response to A” does not indicate that the step is performed immediately after “A” occurs and one or more intervening steps may be included.
[0023] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a” , “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” , “comprising” , “has” , “having” , “includes” and / or “including” , when used herein, specify the presence of stated features, elements, and / or components etc., but do not preclude the presence or addition of one or more other features, elements, components and / or combinations thereof.
[0024] As used in this application, the term “circuitry” may refer to one or more or all of the following:
[0025] (a) hardware-only circuit implementations (such as implementations in only analog and / or digital circuitry) and
[0026] (b) combinations of hardware circuits and software, such as (as applicable) :
[0027] (i) a combination of analog and / or digital hardware circuit (s) with software / firmware and
[0028] (ii) any portions of hardware processor (s) with software (including digital signal processor (s) ) , software, and memory (ies) that work together to cause an apparatus, such as a mobile phone or server, to perform various functions) and
[0029] (c) hardware circuit (s) and or processor (s) , such as a microprocessor (s) or a portion of a microprocessor (s) , that requires software (e.g., firmware) for operation, but the software may not be present when it is not needed for operation.
[0030] This definition of circuitry applies to all uses of this term in this application, including in any claims. As a further example, as used in this application, the term circuitry also covers an implementation of merely a hardware circuit or processor (or multiple processors) or portion of a hardware circuit or processor and its (or their) accompanying software and / or firmware. The term circuitry also covers, for example and if applicable to the particular claim element, a baseband integrated circuit or processor integrated circuit for a mobile device or a similar integrated circuit in server, a cellular network device, or other computing or network device.
[0031] As used herein, the term “communication network” refers to a network following any suitable communication standards, such as New Radio (NR) , Long Term Evolution (LTE) , LTE-Advanced (LTE-A) , Wideband Code Division Multiple Access (WCDMA) , High-Speed Packet Access (HSPA) , Narrow Band Internet of Things (NB-IoT) and so on. Furthermore, the communications between a terminal device and a network device in the communication network may be performed according to any suitable generation communication protocols, including, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols, the sixth generation (6G) communication protocols, and / or any other protocols either currently known or to be developed in the future. Embodiments of the present disclosure may be applied in various communication systems. Given the rapid development in communications, there will of course also be future type communication technologies and systems with which the present disclosure may be embodied. It should not be seen as limiting the scope of the present disclosure to only the aforementioned system.
[0032] As used herein, the term “network device” refers to a node in a communication network via which a terminal device accesses the network and receives services therefrom. The network device may refer to a base station (BS) or an access point (AP) , for example, a node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , an NR NB (also referred to as a gNB) , a Remote Radio Unit (RRU) , a radio header (RH) , a remote radio head (RRH) , a relay, an Integrated Access and Backhaul (IAB) node, a low power node such as a femto, a pico, a non-terrestrial network (NTN) or non-ground network device such as a satellite network device, a low earth orbit (LEO) satellite and a geosynchronous earth orbit (GEO) satellite, an aircraft network device, and so forth, depending on the applied terminology and technology. In some example embodiments, radio access network (RAN) split architecture comprises a Centralized Unit (CU) and a Distributed Unit (DU) at an IAB donor node. An IAB node comprises a Mobile Terminal (IAB-MT) part that behaves like a UE toward the parent node, and a DU part of an IAB node behaves like a base station toward the next-hop IAB node.
[0033] The term “terminal device” refers to any end device that may be capable of wireless communication. By way of example rather than limitation, a terminal device may also be referred to as a communication device, user equipment (UE) , a Subscriber Station (SS) , a Portable Subscriber Station, a Mobile Station (MS) , or an Access Terminal (AT) . The terminal device may include, but not limited to, a mobile phone, a cellular phone, a smart phone, voice over IP (VoIP) phones, wireless local loop phones, a tablet, a wearable terminal device, a personal digital assistant (PDA) , portable computers, desktop computer, image capture terminal devices such as digital cameras, gaming terminal devices, music storage and playback appliances, vehicle-mounted wireless terminal devices, wireless endpoints, mobile stations, laptop-embedded equipment (LEE) , laptop-mounted equipment (LME) , USB dongles, smart devices, wireless customer-premises equipment (CPE) , an Internet of Things (loT) device, a watch or other wearable, a head-mounted display (HMD) , a vehicle, a drone, a medical device and applications (e.g., remote surgery) , an industrial device and applications (e.g., a robot and / or other wireless devices operating in an industrial and / or an automated processing chain contexts) , a consumer electronics device, a device operating on commercial and / or industrial wireless networks, and the like. The terminal device may also correspond to a Mobile Termination (MT) part of an IAB node (e.g., a relay node) . In the following description, the terms “terminal device” , “communication device” , “terminal” , “user equipment” and “UE” may be used interchangeably.
[0034] As used herein, the term “resource, ” “transmission resource, ” “resource block, ” “physical resource block” (PRB) , “uplink resource, ” or “downlink resource” may refer to any resource for performing a communication, for example, a communication between a terminal device and a network device, such as a resource in time domain, a resource in frequency domain, a resource in space domain, a resource in code domain, or any other resource enabling a communication, and the like.
[0035] As discussed above, UE may perform measurements on RSs and providing CSI report. CSI-RS has many functions in NR, e.g., CSI-RS for DL CSI acquisition, CSI-RS for beam management (BM) (based on layer 1 reference signal receiving power, L1- RSRP) , CSI-RS for tracking (TRS) , uplink (UL) CSI acquisition in reciprocity-based UL precoding and so on.
[0036] In some applications (e.g., CSI-RS for BM) , CSI-RS are spatially beamformed into different directions. In addition to CSI-RS, SSB transmissions also may be configured for CSI reporting. In general, a UE may be configured with up to 48 report configurations (CSI-ReportConfig) per component carrier (CC) / 4 report configurations (CSI-ReportConfig) per bandwidth part (BWP) . One CSI resource configuration within one report configuration may be configured with up to 16 resource sets (aperiodic CSI) and 1 resource set (otherwise) . In each CSI resource set up to 64 non-zero power (NZP) CSI-RS resources and 1 NZP-CSI-RS resource up to 32 antenna ports.
[0037] For CSI acquisition, the UE is configured also with a codebook type. Given the measured channel across a CSI-RS resource, the UE may choose a favourite codeword from the specified codebook, i.e., precoding matrix indicator (PMI) , along with channel quality indicator (CQI) , rank indicator (RI) . UE may also be configured to measure several CSI-RS resources (up to 8) within a resource set and report the favourite resource, CSI-RS resource indicator (CRI) , along with PMI, CQI and RI which corresponds to that selected resource.
[0038] In the time domain, a CSI-RS resource may start at any orthogonal frequency division multiplexing (OFDM) symbol of a slot and it may span 1, 2, or 4 OFDM symbols depending on the number of ports configured.
[0039] Likewise, the UE measurement reporting of CSI also may be operated with periodic, semi-persistent, or aperiodic manner, which is so-called report types in NR report configuration. However, there are certain limitations, such as, the UE periodic report may operate only based on the configured periodic CSI-RS resource-set, the UE semi-persistent report may operate based on both configured periodic and semi-persistent CSI-RS resource-set, and finally the UE aperiodic report may operate based on all periodic, semi-persistent, and aperiodic CSI-RS resource-set. In summary, the periodic CSI-RS resources may be used to generate any report type, the semi-persistent and periodic CSI-RS resources may be used to generate semi-persistent CSI reports, and the aperiodic CSI-RS may only be utilized only to generate the aperiodic report.
[0040] In some cases, CSI-RSs are UE-specifically configured in radio resource control (RRC) . However, CSI-RS reference signals may be shared among many UEs, i.e., more than 1 UE are configured to receive the same resource elements (RE) .
[0041] In general, in order to save on downlink (DL) resources, the gNB would try to use cell-specific or group-specific CSI-RS resources. The worst case of downlink (DL) overhead is with UE specific CSI-RS where the DL overhead increases linearly with the number of UEs in the cell.
[0042] Both UE non-group and group-based beam reporting schemes have been supported, where network may configure up to four CRIs / beams with L1-RSRP values to be reported via physical uplink control channel (PUCCH) or physical uplink shared channel (PUSCH) .
[0043] Beam failure detection (BFD) is based on monitoring periodic downlink reference signals at physical (PHY) / layer1 (L1) . The monitored reference signals are referred as beam failure detection reference signals (BFD-RSs) which may be CSI-RS (s) or SSB (s) .
[0044] The configuration of BFD-RS in a BFD-RS set (also called as q0 or a set of q0) may be explicit or implicit and the RS may have Quasi Co-Location (QCL) association with physical downlink control channel (PDCCH) demodulation reference signal (DMRS) .
[0045] In operation, PHY / L1 monitors / determines the link quality for each RS in the set of q0. When the set of q0 is determined to satisfy the failure condition, a beam failure instance indication (BFI) is provided to a higher layer (layer2, L2, medium access control, MAC) . The MAC (L2) detects beam failure by counting beam failure instance indications from the PHY / L1. Further, the counter value is monitored / maintained by using a BFD timer. Specifically, whenever a new BFI is received, the timer is started or restarted. If the BFD timer expires, the BFI counter is reset. When BFI counter value reaches the maximum BFI counter value, the beam failure is detected / declared. The maximum BFI counter value and the BFD timer value are configured by network.
[0046] In addition, the beam failure detection may trigger a beam failure recovery procedure. Beam failure recovery may be RACH-based procedure, i.e., contention free random access (CFRA) and contention based random access (CBRA) .
[0047] One network energy saving (NES) objective is to specify adaptation of common signal / channel transmissions, including, adaptation of SSB in time domain (e.g., adapting periodicity; adaptation of physical random access channel (PRACH) in time domain; adaptation of paging occasions including confining the paging occasions in the time domain. It is noted that there would be no paging latency increase and there would be no negative impact to legacy UEs.
[0048] For adaptation mechanism (s) of SSB in time-domain, for Rel-19 network energy saving (NES) -capable UE’s primary cell (PCell) (connected mode) , adaptation of cell-defining SSB (CD-SSB) on synchronization raster is not supported. Further, adaptation for SSB that is not CD-SSB may be supported, and adaptation for SSB not on synchronization raster may be supported.
[0049] It has been agreed to support SSB adaptation for SCell with CD-SSB. Thus, SSB adaptation for DL initial BWP for secondary cell (SCell) as a feature to be supported in the following. For SCell of Rel-19 NES-capable UE, adaptation of SSB configured for the SCell is supported for the following cases: adaptation for SSB that is not CD-SSB on synchronization raster, adaptation for SSB that is not CD-SSB not on synchronization raster. Further, adaptation for CD-SSB including UE impact compared to legacy operation where the SSB is configured with periodicity>20msec for SCell needs further discussions.
[0050] For adaptation of SSB in time-domain, below options may be supported: Option 1:Adaptation of SSB burst periodicity using one or more SSB burst periodicity value (s) ; Option 2: Adaptation based on two SSB configurations [where up to two configurations can be active] (Using Option 2 to realize Option 1 is not precluded) . Further, details of the differences between the two SSB configurations (e.g., two different periodicities) need further discussions.
[0051] When SSB burst periodicity dynamically changes, UE behavior regarding CSI / beam measurements and / or reporting corresponding to such SSBs should be clearly defined. In addition, adaptation of CSI / beam reporting based on the dynamic adaptation of SSBs periodicity can be enabled.
[0052] Beam failure detection is based on counting the beam failure instance at UE side. As discussed above, beam failure is detected by counting beam failure instance indication from the lower layers to the MAC entity. If beamFailureRecoveryConfig is reconfigured by upper layers during an ongoing random access procedure for beam.
[0053] RRC signalling configures the following parameters in the BeamFailureRecoveryConfig, BeamFailureRecoverySCellConfig, BeamFailureRecoveryServingCellConfig and the RadioLinkMonitoringConfig for the BFD and BFR:
[0054] - beamFailureInstanceMaxCount for the beam failure detection (per Serving Cell or per BFD-RS set of Serving Cell configured with two BFD-RS sets) ;
[0055] - beamFailureDetectionTimer for the beam failure detection (per Serving Cell or per BFD-RS set of Serving Cell configured with two BFD-RS sets) .
[0056] During RLF / RLM procedure, the physical layer in the UE may provide the in-sync and out-of-sync (OOS) indications to higher layers. Based on these indications, higher layers determine if and when the UE declares RLF. The procedure is controlled by a set of RLF counters and timers, configured by the network, such as:
[0057] - N310 –Specifies the number of consecutive OOS indications after which the T310 timer is started.
[0058] - T310 –This is the timer controlling when RLF is declared. I
[0059] - N311 –Specifies the number of consecutive in-sync indications for the SpCell received from lower layers, which, if received in time, will prevent the UE from declaring RLF.
[0060] - T311 –This is the timer that specifies the maximum time for which the UE may try to find a suitable cell where it would attempt to re-establish its RRC connection after RLF has been declared.
[0061] When SSB adaptation is applied, UE behavior on BFD procedure needs to be enhanced and the network configuration also need to be enhanced. The example embodiments discussed herein may enable appropriate UE behavior and actions in terms of BFD procedure and / or configuration when the SSB burst (or RS) periodicity dynamically changes.
[0062] In the context the present disclosure, periodicity change and / or format change is used as an example of RS change for describing some specific example embodiments of the present disclosure. It is noted that such example embodiments described are only for the purpose of illustration without suggesting any limitations. In fact, RS change may be any change in time domain, frequency domain, spatial domain, power domain and so on. The present is not limited in this regard.
[0063] In the context the present disclosure, beam failure detection is used as an example of failure detection for describing some specific example embodiments of the present disclosure. It is noted that such example embodiments described are only for the purpose of illustration without suggesting any limitations. In fact, failure detection may be applicable to BFD (beam failure detection) , RLF (radio link failure) detection and so on.The present is not limited in this regard.
[0064] In the context the present disclosure, SSB may be used as examples of RS for describing some specific example embodiments of the present disclosure. It is noted that such example embodiments described are only for the purpose of illustration without suggesting any limitations. In fact, RS discussed herein includes but is not limited to, SSB, CSI-RS, demodulation reference signal (DMRS) , positioning reference signal (PRS) , CSI-RS for tracking (TRS) and the others. The present is not limited in this regard.
[0065] Example Environment
[0066] FIG. 1 illustrates an example communication environment 100 in which example embodiments of the present disclosure can be implemented. The communication environment 100 includes a first apparatus 110 and a second apparatus 120. A serving area provided by the second apparatus 120 is called a cell. Further, the second apparatus 120 can provide one or more cells, for example, a cell 102 is provided by the second apparatus 120, as illustrated in FIG. 1.
[0067] In some example embodiments, the first apparatus 110 may be comprised in a terminal device / apparatus and the second apparatus 120 may be comprised in a network device / apparatus serving the terminal device / apparatus.
[0068] In some example embodiments, a transmission direction from the second apparatus 120 to the first apparatus 110 is referred to as a downlink (DL) , while a transmission direction from the first apparatus 110 to the second apparatus 120 is referred to as an uplink (UL) . In DL, the second apparatus 120 is a transmitting (TX) device (or a transmitter) and the first apparatus 110 is a receiving (RX) device (or a receiver) . In UL, the first apparatus 110 is a TX device (or a transmitter) and the second apparatus 120 is a RX device (or a receiver) .
[0069] In the following, for the purpose of illustration, some example embodiments are described with the first apparatus 110 operating as a terminal apparatus and the second apparatus 120 operating as a network apparatus. However, in some example embodiments, operations described in connection with a terminal apparatus may be implemented at a network apparatus or other apparatus, and operations described in connection with a network apparatus may be implemented at a terminal apparatus or other apparatus.
[0070] In some example embodiments, if the first apparatus 110 is a terminal apparatus and the second apparatus 120 is a network apparatus, a link from the second apparatus 120 to the first apparatus 110 is referred to as a downlink (DL) , while a link from the first apparatus 110 to the second apparatus 120 is referred to as an uplink (UL) . In DL, the second apparatus 120 is a transmitting (TX) apparatus (or a transmitter) and the first apparatus 110 is a receiving (RX) apparatus (or a receiver) . In UL, the first apparatus 110 is a TX apparatus (or a transmitter) and the second apparatus 120 is a RX apparatus (or a receiver) .
[0071] It is to be understood that the number of devices and their connections shown in FIG. 1 are only for the purpose of illustration without suggesting any limitation. The communication environment 100 may include any suitable number of devices configured to implementing example embodiments of the present disclosure. Although not shown, it would be appreciated that one or more additional devices may be located in the cell 102, and one or more additional cells may be deployed in the communication environment 100. It is noted that although illustrated as a network device, the second apparatus 120 may be another device than a network device. Although illustrated as a terminal device, the first apparatus 110 may be another device than a terminal device.
[0072] Communications in the communication environment 100 may be implemented according to any proper communication protocol (s) , comprising, but not limited to, cellular communication protocols, wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and / or any other protocols currently known or to be developed in the future. Moreover, the communication may utilize any proper wireless communication technology, comprising but not limited to: Code Division Multiple Access (CDMA) , Frequency Division Multiple Access (FDMA) , Time Division Multiple Access (TDMA) , Frequency Division Duplex (FDD) , Time Division Duplex (TDD) , Multiple-Input Multiple-Output (MIMO) , Orthogonal Frequency Division Multiple (OFDM) , Discrete Fourier Transform spread OFDM (DFT-s-OFDM) and / or any other technologies currently known or to be developed in the future.
[0073] Work Principle and Example Signaling for Communication
[0074] Work principle will be discussed with reference to FIG. 2, which illustrates a signaling flow 200 of communication in accordance with some embodiments of the present disclosure. For the purposes of discussion, the signaling flow 200 will be discussed with reference to FIG. 1, for example, by using the first apparatus 110 and the second apparatus 120, where the first apparatus 110 may function as a terminal apparatus (UE) and the second apparatus 120 may function as a network apparatus (gNB) .
[0075] It is to be understood that the operations at the first apparatus 110 and the second apparatus 120 should be coordinated. In other words, the second apparatus 120 and the first apparatus 110 should have a common understand about configurations, parameters and so on. Such common understand may be enabled by exchanging any suitable signaling between the second apparatus 120 and the first apparatus 110 or by the second apparatus 120 and the first apparatus 110 applying a same rule, policy, and / or the like.
[0076] In the following, although some operations are described from a perspective of the first apparatus 110, it is to be understood that the corresponding operations should be performed by the second apparatus 120. Similarly, although some operations are described from a perspective of the second apparatus 120, it is to be understood that the corresponding operations should be performed by the first apparatus 110. Merely for brevity, some of the same or similar contents are omitted here.
[0077] In the following example embodiments, a reference signal may comprise at least one of the following: at least one SSB, at least one CSI-RS, at least one DMRS, and other reference signal (such as, positioning reference signal, PRS, CSI-RS for tracking and so on) .
[0078] In operation, as illustrated in FIG. 2, the second apparatus 120 transmits (210-1) a detection configuration to the first apparatus 110, and the first apparatus 110 receives (210-2) the detection configuration accordingly. In some example embodiments, the detection configuration is about beam failure detection and associated with at least one reference signal, such as, BFD reference signal (s) (BFD-RS (s) ) . Alternatively, or in addition, in some example embodiments, the detection configuration is about link failure detection and associated with at least one reference signal, such as, radio link failure detection, RLF detection (also may be call as radio link management, RLM) . It should be noted that BFD / BFR, RLF detection are only illustrated for purpose of discussion. The example embodiments discussed herein may be applicable to any detection procedure that associated with at least one reference signal.
[0079] The first apparatus 110 determines (230) a change of a configuration of the at least one reference signal. In some example embodiments, the change may comprise at least one of the following: a change of a periodicity of the at least one reference signal, a change of a periodicity of a burst of the at least one reference signal, a change of a pattern of the at least one reference signal, or a change to non-cell-defining or cell-defining at least one reference signal, e.g., a change to non-cell-defining or cell-defining SSB (s) / RS(s) .
[0080] It should be understood that a pattern discussed herein may refer to a time domain pattern, a frequency domain pattern, a spatial domain pattern, and / or power domain pattern. In summary, the present discourse is not limited in the specific domain in which the change occurs.
[0081] According to some example embodiments of the present disclosure, the change may be determined based on a further configuration. In this case, the first apparatus 110 may obtain a further configuration of the at least one reference signal and then may determine (230) the change based on the configuration and the further configuration. Additionally, the further configuration may be provided by the second apparatus 120. Specifically, the second apparatus 120 may transmit (220-1) the further configuration to the first apparatus 110, and the first apparatus 110 may receive (220-2) the further configuration from the second apparatus 120 accordingly.
[0082] According to some example embodiments of the present disclosure, the change may be determined based on an indication. Specifically, in some example embodiments, the first apparatus 110 may receive an indication indicative of the change from the second apparatus 120 and then may determine the change based on the indication. Additionally, in some example embodiments, the indication may be received through a MAC CE, DCI, or system information block (SIB) .
[0083] According to some example embodiments of the present disclosure, the change may be determined based on at least one association (also may be called as “time patterns” or “time pattern” or simply “pattern (s) ” ) between respective reference signal patterns or periodicities or burst periodicities and a plurality of time windows.
[0084] In some example embodiments, the first apparatus 110 may obtain the at least one association at least from the configuration of the at least one reference signal via an RRC signaling and may determine the change based on the at least one association.
[0085] Additionally, in some example embodiments, one association of the at least one association to be applied may be indicated via one MAC-CE or DCI. In other words, if there are more than one association, each association may be indicated by a single MAC-CE or DCI.
[0086] In some example embodiments, the at least one association may be updated or activated or deactivated via a MAC-CE and / or DCI. For example, the determination or indication of the change may be based on a higher layer (e.g., RRC) configured time pattern (which may be repeating in time) . Based on which the UE may know at each time period which RS periodicity or pattern is applicable. For example, the time pattern may be consisting of at least one first time period, UE may know where a first RS periodicity or pattern is applicable and a second time period where a second RS periodicity or pattern is applicable, and where this pattern repeats in time. Additionally, the above time pattern may be indicated / activated / deactivated, or even selected (in case multiple patterns are configured) , via MAC CE or DCI (or system information) .
[0087] Next, based on the change of a configuration of the at least one reference signal, the first apparatus 110 behaves as below. In some example embodiments, at least based on the change and the detection configuration, the first apparatus 110 performs (240) one or more operations on one or more timer associated with the beam failure detection or radio link failure. Alternatively, or in addition, in some embodiments, at least based on the change and the detection configuration, the first apparatus 110 performs (240) one or more operations on a (beam) failure instance count (such as, a failure instance counter, the maximum failure instance counter value, N30, T30, N311, T311 and so on) . It is noted that wording “count” also may be replaced with “counter” , “counter value” , “counter status” and the likes.
[0088] Example operations on the (BFD or RLF detection) timer are discussed as below. In summary, in some example embodiments, in accordance with a determination of the change, the first apparatus 110 may perform the one or more operations on the beam failure detection timer. For example, the first apparatus 110 may stop the at least one timer, start the at least one timer, restart the at least one timer, consider the at least one timer as being expired, update a time period or a value associated with the at least one timer based on the change, suspend the at least one timer until the first reference signal occasion after the detection of the change, stop or suspend a first timer of the at least one timer while staring a second timer of the at least one timer, or stop a second timer of the at least one timer while restarting or resuming a first timer of the at least one timer. More details are discussed in the following.
[0089] In some example embodiments, in accordance with a determination that a first periodicity of the at least one reference signal indicated in the configuration is changed to a second periodicity of the at least one reference signal and the second periodicity is larger than the first periodicity, the first apparatus 110 may stop the timer, start or restart the timer, consider the timer as being expired, or increase the time period or the value associated with the timer.
[0090] In some example embodiments, the first apparatus 110 may determine a plurality of timer values based on the detection configuration. Then in accordance with a determination that a first periodicity of the at least one reference signal indicated in the configuration is changed to a second periodicity of the at least one reference signal (or a first pattern of the at least one reference signal indicated in the configuration is changed to a second pattern of the at least one reference signal) , the first apparatus 110 may select a target timer value corresponding to the second periodicity from the plurality of beam failure detection timer values, and then may apply the timer with the target timer value.
[0091] Example operations on failure instance count are discussed as below. In some example embodiments, based on the change, the first apparatus 110 may reset a beam failure instance count to a value (such as, 0) and / or reset a beam failure instance max count to a further value.
[0092] In some example embodiments, based on the change, the first apparatus 110 may reset a synchronization count or indication to a value and / or reset a synchronization max count or indication to a further value.
[0093] In some example embodiments, the first apparatus 110 may determine a plurality of beam failure instance max count values based on the beam failure detection configuration. Then, in accordance with a determination that a first periodicity of the at least one reference signal indicated in the configuration is changed to a second periodicity of the at least one reference signal (or a first pattern of the at least one reference signal indicated in the configuration is changed to a second pattern of the at least one reference signal) , the first apparatus 110 may select a target beam failure instance max count value corresponding to the second periodicity from the plurality of beam failure instance max count values, and then may apply the beam failure detection timer with the target beam failure instance max count value.
[0094] In some example embodiments, the first apparatus 110 may obtain a plurality of reference signal sets for a detection of the beam failure or the radio link failure associated with respective one reference signal configuration. Then, if a further configuration of the at least one reference signal is to be applied, the first apparatus 110 may determine a target reference signal set corresponding to the further configuration from the plurality of reference signal sets, and then may perform the one or more operations associated with the detection based on the target reference signal set.
[0095] According to the above processes, when RS adaptation occurs, related failure detection is adjusted. Specifically, the above processes may define appropriate UE behavior and actions regarding (beam / link) failure detection in case of RS adaptation (such as, SSB adaptation) , and further may enable appropriate adaptation of (beam / link) failure detection configuration based on th RS adaptation (such as, SSB adaptation) . As a result, UE behavior regarding at least failure detection timer and failure instance count may being ambiguous an impropriate is avoided.
[0096] Merely for better understand the above processes, some specific example embodiments are further discussed with reference to FIG. 3. It should be noted that in FIG. 3, BFD is used as an example detection, and the UE is used as an example first apparatus, gNB is used as an example second apparatus. Such example descriptions should not be interpretated as any limitations to the present disclosure.
[0097] As illustrated in FIG. 3, UE is specified / configured (310) with beam failure detection configuration associated with at least one RS (such as, SSB) , via such as, RRC.
[0098] In a case that the beam failure detection configuration is activated / applied, UE may receive (320) the at least one RS (SSB) based on the beam failure detection configuration.
[0099] In the following, an indication indicative of a change of reference signal (s) periodicity (such as SSB burst periodicity) is received (330) through MAC CE or through DCI / PDCCH or SI (system information) .
[0100] Then, the changed RS is transmitted. As illustrated, the at least one RS (SSB) with the new / indicated periodicity is transmitted (340) to the UE.
[0101] Upon or after receiving the indication indicative of the change, UE performs (350) one or more actions related to beam failure detection procedure, where the beam failure detection is based on at least one of the reference signals for which the periodicity has changed. In the example of FIG. 3, the one or more actions related to beam failure detection procedure comprise at least one of: UE stops the beam failure detection timer (e.g., beamFailureDetectionTimer) ; UE starts or restarts the beam failure detection timer; UE resets the beam failure instance count to 0, (e.g., BFI_COUNTER) ; UE considers that the beam failure detection timer as expired; UE considers that the beam failure detection timer as expired without resetting the beam failure instance count to 0. UE updates the beam failure detection timer according to the indicated / new reference signal periodicity (this may correspond to increasing or decreasing the time period or value of the timer, or even in some cases keeping the time period or value of the timer as it is) ; UE holds the timer or stop it for a certain time period or until next RS occasion used for beam failure detection.
[0102] In some example embodiments, whether resetting the number of counts may depend on whether the new applicable period is larger or shorter than the previously applicable periodicity. For example, the UE may be specified or configured to reset the count if the indicated or applicable periodicity is larger than previous periodicity.
[0103] In some example embodiments, whether starting or restarting the beam failure detection timer may depend on whether the new applicable period is larger or shorter than the previously applicable periodicity.
[0104] In some example embodiments, whether stopping the beam failure detection timer may depend on whether the new applicable period is larger or shorter than the previously applicable periodicity.
[0105] In some example embodiments, whether considering the beam failure detection timer as expired may depend on whether the new applicable period is larger or shorter than the previously applicable periodicity.
[0106] In some example embodiments, the UE may be configured with multiple beam failure detection timer values each associated with a RS periodicity. When a (new) RS periodicity is indicated, the timer value associated to this periodicity may become applicable. This may be considered as part of the one or more actions the UE performs. As illustrated in FIG. 3, UE determines (360) to change the beam failure detection timer value at least based on the indicated periodicity.
[0107] Alternatively, or additionally, the UE may be configured with multiple beam failure instance maximum count values each associated with a RS periodicity. When a (new) RS periodicity is indicated, the max count value associated to this periodicity may become applicable. This may be considered as part of the one or more actions the UE performs. As illustrated in FIG. 3, UE determines (360) to change the beam failure instance max count value at least based on the indicated periodicity.
[0108] Alternatively, or additionally, a cell or component carrier or BWP may be configured with at least two BFD-RS sets each of which associated with an SSB (or RS) configuration. When a certain SSB configuration is applicable or indicated (e.g., via MAC CE or DCI) , the corresponding BFD-RS set may be applicable or used by the UE.
[0109] In some example embodiments, a UE may be configured a BFD-RS set per SSB (or RS) configuration.
[0110] In case of change of periodicity for only some of the RSs / SSBs, at least some of the above behavior or the one or more actions related to beam failure detection may only be applicable if the RS from the BFD RS set, determined / configured / indicated implicitly or even explicitly, comprises RS for which the periodicity has changed.
[0111] Example Method
[0112] FIG. 4 shows a flowchart of an example method 400 implemented at a first apparatus in accordance with some example embodiments of the present disclosure. For the purpose of discussion, the method 400 will be described from the perspective of the first apparatus 110 in FIG. 1.
[0113] At block 410, the first apparatus receives, from a second apparatus, a detection configuration for at least one of a beam failure or a radio link failure associated with at least one reference signal.
[0114] At block 420, in accordance with a determination of a change of a configuration of the at least one reference signal, the first apparatus performs at least based on the change and the detection configuration, one or more operations associated with the detection of the at least one reference signal on at least one of the following: at least one timer associated with the beam failure detection or radio link failure, or a beam failure instance count.
[0115] In some example embodiments, the first apparatus may obtain a further configuration of the at least one reference signal; and determining the change based on the configuration and the further configuration.
[0116] In some example embodiments, the first apparatus may receive the further configuration from the second apparatus.
[0117] In some example embodiments, the first apparatus may receive an indication indicative of the change from the second apparatus; and determining the change based on the indication.
[0118] In some example embodiments, the indication may be received through a medium access control-control element, MAC CE, or through downlink control information, DCI, or through system information block, SIB.
[0119] In some example embodiments, the first apparatus may obtain, at least from the configuration of the at least one reference signal via a radio resource control signaling, RRC, at least one association between respective reference signal patterns or periodicities and a plurality of time windows; and determine the change based on the at least one association.
[0120] In some example embodiments, the at least one association may be updated or activated or deactivated via a MAC-CE or DCI.
[0121] In some example embodiments, an association of the at least one association to be applied may be indicated via a MAC-CE or DCI.
[0122] In some example embodiments, the change may comprise at least one of the following: a change of a periodicity of the at least one reference signal, a change of a periodicity of a burst of the at least one reference signal, a change of a pattern of the at least one reference signal, a change to non-cell-defining or cell-defining at least one reference signal.
[0123] In some example embodiments, in accordance with a determination of the change, the first apparatus may perform the one or more operations on the at least one timer based on the detection configuration associated with the configuration of the at least one reference signal or a detection configuration associated with a further configuration of the at least one reference signal.
[0124] In some example embodiments, the one or more operations on the at least one timer may comprise at least one of the following: stopping the at least one timer, starting the at least one timer, restarting the at least one timer, considering the at least one timer as being expired, updating a time period or a value associated with the at least one timer based on the change, suspending the at least one timer until the first reference signal occasion after the detection of the change, stopping or suspending a first timer of the at least one timer while staring a second timer of the at least one timer, or stopping a second timer of the at least one timer while restarting or resuming a first timer of the at least one timer.
[0125] In some example embodiments, in accordance with a determination that a first periodicity of the at least one reference signal indicated in the configuration is changed to a second periodicity of the at least one reference signal and the second periodicity is larger than the first periodicity, the first apparatus may perform at least one of the following: stopping the at least one timer, starting or restart the at least one timer, considering the at least one timer as being expired, or increasing the time period or the value associated with the at least one timer.
[0126] In some example embodiments, the first apparatus may determine a plurality of timer values based on the detection configuration; in accordance with a determination that a first periodicity of the at least one reference signal indicated in the configuration is changed to a second periodicity of the at least one reference signal or a first pattern of the at least one reference signal indicated in the configuration is changed to a second pattern of the at least one reference signal, select from the plurality of timer values, a target timer value corresponding to the second periodicity; and applying the at least one timer with the target timer value.
[0127] In some example embodiments, in accordance with a determination of the change, the first apparatus may reset a beam failure instance count to a value and / or reset a beam failure instance max count to a further value.
[0128] In some example embodiments, in accordance with a determination of the change, the first apparatus may reset a synchronization count or indication to a value and / or reset a synchronization max count or indication to a further value.
[0129] In some example embodiments, the first apparatus may determine a plurality of beam failure instance max count values based on the detection configuration; in accordance with a determination that a first periodicity of the at least one reference signal indicated in the configuration is changed to a second periodicity of the at least one reference signal or a first pattern of the at least one reference signal indicated in the configuration is changed to a second pattern of the at least one reference signal, select from the plurality of beam failure instance max count values, a target beam failure instance max count value corresponding to the second periodicity; and apply the beam failure detection timer with the target beam failure instance max count value.
[0130] In some example embodiments, the first apparatus may obtain a plurality of reference signal sets for a detection of the beam failure or the radio link failure associated with respective one reference signal configuration; and in accordance with a determination that a further configuration of the at least one reference signal is to be applied, determine from the plurality of reference signal sets, a target reference signal set corresponding to the further configuration; and perform the one or more operations associated with the detection based on the target reference signal set.
[0131] In some example embodiments, the at least one reference signal may comprise at least one of the following: at least one synchronization signal / physical broadcast channel block, at least one channel state information reference signal, at least one demodulation reference signal.
[0132] In some example embodiments, the first apparatus may comprise a terminal device and the second apparatus may comprise a network device.
[0133] Example Apparatus, Device and Medium
[0134] In some example embodiments, a first apparatus capable of performing any of the method 400 (for example, the first apparatus 110 in FIG. 1) may comprise means for performing the respective operations of the method 400. The means may be implemented in any suitable form. For example, the means may be implemented in a circuitry or software module. The first apparatus may be implemented as or included in the first apparatus 110 in FIG. 1.
[0135] In some example embodiments, the first apparatus comprises means for receiving, from a second apparatus, a detection configuration for at least one of a beam failure or a radio link failure associated with at least one reference signal; and means for in accordance with a determination of a change of a configuration of the at least one reference signal, performing at least based on the change and the detection configuration, one or more operations associated with the detection of the at least one reference signal on at least one of the following: at least one timer associated with the beam failure detection or radio link failure, or a beam failure instance count.
[0136] In some example embodiments, the first apparatus further comprises: means for obtaining a further configuration of the at least one reference signal; and means for determining the change based on the configuration and the further configuration.
[0137] In some example embodiments, the first apparatus further comprises: means for receiving the further configuration from the second apparatus.
[0138] In some example embodiments, the first apparatus further comprises: means for receiving an indication indicative of the change from the second apparatus; and means for determining the change based on the indication.
[0139] In some example embodiments, the indication is received through a medium access control-control element, MAC CE, or through downlink control information, DCI, or through system information block, SIB.
[0140] In some example embodiments, the first apparatus further comprises: means for obtaining, at least from the configuration of the at least one reference signal via a radio resource control signaling, RRC, at least one association between respective reference signal patterns or periodicities and a plurality of time windows; and means for determining the change based on the at least one association.
[0141] In some example embodiments, the at least one association is updated or activated or deactivated via a MAC-CE or DCI.
[0142] In some example embodiments, an association of the at least one association to be applied is indicated via a MAC-CE or DCI.
[0143] In some example embodiments, the change comprises at least one of the following: a change of a periodicity of the at least one reference signal, a change of a periodicity of a burst of the at least one reference signal, a change of a pattern of the at least one reference signal, a change to non-cell-defining or cell-defining at least one reference signal.
[0144] In some example embodiments, the first apparatus further comprises: means for in accordance with a determination of the change, performing the one or more operations on the at least one timer based on the detection configuration associated with the configuration of the at least one reference signal or a detection configuration associated with a further configuration of the at least one reference signal.
[0145] In some example embodiments, the one or more operations on the at least one timer may comprise at least one of the following: stopping the at least one timer, starting the at least one timer, restarting the at least one timer, considering the at least one timer as being expired, updating a time period or a value associated with the at least one timer based on the change, suspending the at least one timer until the first reference signal occasion after the detection of the change, stopping or suspending a first timer of the at least one timer while staring a second timer of the at least one timer, or stopping a second timer of the at least one timer while restarting or resuming a first timer of the at least one timer.
[0146] In some example embodiments, the first apparatus further comprises: means for in accordance with a determination that a first periodicity of the at least one reference signal indicated in the configuration is changed to a second periodicity of the at least one reference signal and the second periodicity is larger than the first periodicity, performing at least one of the following: stopping the at least one timer, starting or restart the at least one timer, considering the at least one timer as being expired, or means for increasing the time period or the value associated with the at least one timer.
[0147] In some example embodiments, the first apparatus further comprises: means for determining a plurality of timer values based on the detection configuration; means for in accordance with a determination that a first periodicity of the at least one reference signal indicated in the configuration is changed to a second periodicity of the at least one reference signal or a first pattern of the at least one reference signal indicated in the configuration is changed to a second pattern of the at least one reference signal, selecting from the plurality of timer values, a target timer value corresponding to the second periodicity; and means for applying the at least one timer with the target timer value.
[0148] In some example embodiments, the first apparatus further comprises: means for in accordance with a determination of the change, resetting a beam failure instance count to a value and / or reset a beam failure instance max count to a further value.
[0149] In some example embodiments, the first apparatus further comprises: means for in accordance with a determination of the change, resetting a synchronization count or indication to a value and / or reset a synchronization max count or indication to a further value.
[0150] In some example embodiments, the first apparatus further comprises: means for determining a plurality of beam failure instance max count values based on the detection configuration; means for in accordance with a determination that a first periodicity of the at least one reference signal indicated in the configuration is changed to a second periodicity of the at least one reference signal or a first pattern of the at least one reference signal indicated in the configuration is changed to a second pattern of the at least one reference signal, selecting from the plurality of beam failure instance max count values, a target beam failure instance max count value corresponding to the second periodicity; and means for applying the beam failure detection timer with the target beam failure instance max count value.
[0151] In some example embodiments, the first apparatus further comprises: means for obtaining a plurality of reference signal sets for a detection of the beam failure or the radio link failure associated with respective one reference signal configuration; and means for in accordance with a determination that a further configuration of the at least one reference signal is to be applied, determining from the plurality of reference signal sets, a target reference signal set corresponding to the further configuration; and means for performing the one or more operations associated with the detection based on the target reference signal set.
[0152] In some example embodiments, the at least one reference signal comprises at least one of the following: at least one synchronization signal / physical broadcast channel block, at least one channel state information reference signal, at least one demodulation reference signal.
[0153] In some example embodiments, the first apparatus comprises a terminal device and the second apparatus comprises a network device.
[0154] FIG. 5 is a simplified block diagram of a device 500 that is suitable for implementing example embodiments of the present disclosure. The device 500 may be provided to implement a communication device, for example, the first apparatus 110 as shown in FIG. 1. As shown, the device 500 includes one or more processors 510, one or more memories 520 coupled to the processor 510, and one or more communication modules 540 coupled to the processor 510.
[0155] The communication module 540 is for bidirectional communications. The communication module 540 has one or more communication interfaces to facilitate communication with one or more other modules or devices. The communication interfaces may represent any interface that is necessary for communication with other network elements. In some example embodiments, the communication module 540 may include at least one antenna.
[0156] The processor 510 may be of any type suitable to the local technical network and may include one or more of the following: general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples. The device 500 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.
[0157] The memory 520 may include one or more non-volatile memories and one or more volatile memories. Examples of the non-volatile memories include, but are not limited to, a Read Only Memory (ROM) 524, an electrically programmable read only memory (EPROM) , a flash memory, a hard disk, a compact disc (CD) , a digital video disk (DVD) , an optical disk, a laser disk, and other magnetic storage and / or optical storage. Examples of the volatile memories include, but are not limited to, a random-access memory (RAM) 522 and other volatile memories that will not last in the power-down duration.
[0158] A computer program 530 includes computer executable instructions that are executed by the associated processor 510. The instructions of the program 530 may include instructions for performing operations / acts of some example embodiments of the present disclosure. The program 530 may be stored in the memory, e.g., the ROM 524. The processor 510 may perform any suitable actions and processing by loading the program 530 into the RAM 522.
[0159] The example embodiments of the present disclosure may be implemented by means of the program 530 so that the device 500 may perform any process of the disclosure as discussed with reference to FIG. 2 to FIG. 4. The example embodiments of the present disclosure may also be implemented by hardware or by a combination of software and hardware.
[0160] In some example embodiments, the program 530 may be tangibly contained in a computer readable medium which may be included in the device 500 (such as in the memory 520) or other storage devices that are accessible by the device 500. The device 500 may load the program 530 from the computer readable medium to the RAM 522 for execution. In some example embodiments, the computer readable medium may include any types of non-transitory storage medium, such as ROM, EPROM, a flash memory, a hard disk, CD, DVD, and the like. The term “non-transitory, ” as used herein, is a limitation of the medium itself (i.e., tangible, not a signal) as opposed to a limitation on data storage persistency (e.g., RAM vs. ROM) .
[0161] FIG. 6 shows an example of the computer readable medium 600 which may be in form of CD, DVD or other optical storage disk. The computer readable medium 600 has the program 530 stored thereon.
[0162] Generally, various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, and other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. Although various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representations, it is to be understood that the block, apparatus, system, technique or method described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
[0163] Some example embodiments of the present disclosure also provide at least one computer program product tangibly stored on a computer readable medium, such as a non-transitory computer readable medium. The computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target physical or virtual processor, to carry out any of the methods as described above. Generally, program modules include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types. The functionality of the program modules may be combined or split between program modules as desired in various embodiments. Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.
[0164] Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. The program code may be provided to a processor or controller of a general-purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program code, when executed by the processor or controller, cause the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
[0165] In the context of the present disclosure, the computer program code or related data may be carried by any suitable carrier to enable the device, apparatus or processor to perform various processes and operations as described above. Examples of the carrier include a signal, computer readable medium, and the like.
[0166] The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of the computer readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random-access memory (RAM) , a read-only memory (ROM) , an erasable programmable read-only memory (EPROM or Flash memory) , an optical fiber, a portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
[0167] Further, although operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous. Likewise, although several specific implementation details are contained in the above discussions, these should not be construed as limitations on the scope of the present disclosure, but rather as descriptions of features that may be specific to particular embodiments. Unless explicitly stated, certain features that are described in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, unless explicitly stated, various features that are described in the context of a single embodiment may also be implemented in a plurality of embodiments separately or in any suitable sub-combination.
[0168] Although the present disclosure has been described in languages specific to structural features and / or methodological acts, it is to be understood that the present disclosure defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
Claims
1.A first apparatus comprising:at least one processor; andat least one memory storing instructions that, when executed by the at least one processor, cause the first apparatus at least to:receive, from a second apparatus, a detection configuration for at least one of a beam failure or a radio link failure associated with at least one reference signal; andin accordance with a determination of a change of a configuration of the at least one reference signal, perform, at least based on the change and the detection configuration, one or more operations associated with the detection of the at least one reference signal on at least one of the following:at least one timer associated with the beam failure detection or radio link failure, ora beam failure instance count.2.The first apparatus of claim 1, wherein the first apparatus is caused to:obtain a further configuration of the at least one reference signal; anddetermine the change based on the configuration and the further configuration.3.The first apparatus of claim 2, wherein the first apparatus is caused to:receive the further configuration from the second apparatus.4.The first apparatus of claim 1, wherein the first apparatus is caused to:receive an indication indicative of the change from the second apparatus; anddetermine the change based on the indication.5.The first apparatus of claim 4, wherein the indication is received through a medium access control-control element, MAC CE, or through downlink control information, DCI, or through system information block, SIB.6.The first apparatus of claim 1, wherein the first apparatus is caused to:obtain, at least from the configuration of the at least one reference signal via a radio resource control signaling, RRC, at least one association between respective reference signal patterns or periodicities and a plurality of time windows; anddetermine the change based on the at least one association.7.The first apparatus of claim 6, wherein the at least one association is updated or activated or deactivated via a MAC-CE or DCI.8.The first apparatus of claim 6, wherein an association of the at least one association to be applied is indicated via a MAC-CE or DCI.9.The first apparatus of any of claims 1-8, wherein the change comprises at least one of the following:a change of a periodicity of the at least one reference signal,a change of a periodicity of a burst of the at least one reference signal,a change of a pattern of the at least one reference signal,a change to non-cell-defining or cell-defining at least one reference signal.10.The first apparatus of any of claims 1-9, wherein the first apparatus is caused to:in accordance with a determination of the change, perform the one or more operations on the at least one timer based on the detection configuration associated with the configuration of the at least one reference signal or a detection configuration associated with a further configuration of the at least one reference signal.11.The first apparatus of claim 10, wherein the one or more operations on the at least one timer comprises at least one of the following:stopping the at least one timer,starting the at least one timer,restarting the at least one timer,considering the at least one timer as being expired,updating a time period or a value associated with the at least one timer based on the change,suspending the at least one timer until the first reference signal occasion after the detection of the change,stopping or suspending a first timer of the at least one timer while staring a second timer of the at least one timer, orstopping a second timer of the at least one timer while restarting or resuming a first timer of the at least one timer.12.The first apparatus of claim 11, wherein the first apparatus is caused to:in accordance with a determination that a first periodicity of the at least one reference signal indicated in the configuration is changed to a second periodicity of the at least one reference signal and the second periodicity is larger than the first periodicity, perform at least one of the following:stopping the at least one timer,starting or restarting the at least one timer,considering the at least one timer as being expired, orincreasing the time period or the value associated with the at least one timer.13.The first apparatus of any of claims 1-12, wherein the first apparatus is caused to:determine a plurality of timer values based on the detection configuration;in accordance with a determination that a first periodicity of the at least one reference signal indicated in the configuration is changed to a second periodicity of the at least one reference signal or a first pattern of the at least one reference signal indicated in the configuration is changed to a second pattern of the at least one reference signal, select, from the plurality of timer values, a target timer value corresponding to the second periodicity; andapply the at least one timer with the target timer value.14.The first apparatus of any of claims 1-13, wherein the first apparatus is caused to:in accordance with a determination of the change, reset a beam failure instance count to a value and / or reset a beam failure instance max count to a further value.15.The first apparatus of any of claims 1-14, wherein the first apparatus is further caused to:in accordance with a determination of the change, reset a synchronization count or indication to a value and / or reset a synchronization max count or indication to a further value.16.The first apparatus of claim 14, wherein the first apparatus is caused to:determine a plurality of beam failure instance max count values based on the detection configuration;in accordance with a determination that a first periodicity of the at least one reference signal indicated in the configuration is changed to a second periodicity of the at least one reference signal or a first pattern of the at least one reference signal indicated in the configuration is changed to a second pattern of the at least one reference signal, select, from the plurality of beam failure instance max count values, a target beam failure instance max count value corresponding to the second periodicity; andapply the beam failure detection timer with the target beam failure instance max count value.17.The first apparatus of claim 1, wherein the first apparatus is caused to:obtain a plurality of reference signal sets for a detection of the beam failure or the radio link failure associated with respective one reference signal configuration; andin accordance with a determination that a further configuration of the at least one reference signal is to be applied, determine, from the plurality of reference signal sets, a target reference signal set corresponding to the further configuration; andperform the one or more operations associated with the detection based on the target reference signal set.18.The first apparatus of any of claims 1-17, wherein the at least one reference signal comprises at least one of the following:at least one synchronization signal / physical broadcast channel block,at least one channel state information reference signal, orat least one demodulation reference signal.19.The first apparatus of any of claims 1-18, wherein the first apparatus comprises a terminal device and the second apparatus comprises a network device.20.A method comprising:receiving, from a second apparatus, a detection configuration for at least one of a beam failure or a radio link failure associated with at least one reference signal; andin accordance with a determination of a change of a configuration of the at least one reference signal, performing at least based on the change and the detection configuration, one or more operations associated with the detection of the at least one reference signal on at least one of the following:at least one timer associated with the beam failure detection or radio link failure, ora beam failure instance count.21.A first apparatus comprising:means for receiving, from a second apparatus, a detection configuration for at least one of a beam failure or a radio link failure associated with at least one reference signal; andmeans for in accordance with a determination of a change of a configuration of the at least one reference signal, performing at least based on the change and the detection configuration, one or more operations associated with the detection of the at least one reference signal on at least one of the following:at least one timer associated with the beam failure detection or radio link failure, ora beam failure instance count.22.A computer readable medium comprising instructions stored thereon for causing an apparatus at least to perform the method of claim 20.
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