Beam Fault Detection and Recovery Using Multi-TRP and Multi-Panel Transmissions

Abstract

To provide methods, systems and devices for supporting beam failure detection (BFD) and beam failure recovery (BFR) based on each of multiple links with multiple transmission and reception points (multi-TRP).SOLUTION: The methods support BFD with multi-TRP transmission, or support BFR with multi-TRP transmission. For the BFD with multi-TRP transmission, there may be an explicit configuration or implicit configuration. With regard to the BFR with multi-TRP transmission, there may be: BFR using contention-free PRACH; BFR using PUCCH; BFR using contention-free 2-step RACH; or BFR using PUSCH.SELECTED DRAWING: Figure 6A

Description

[Technical Field]

[0001] This application is a continuation of U.S. Provisional Patent Application No. 62 / 887,917, filed August 16, 2019. Issue, titled "Beam Fault Detection and Recovery Using Multi-Trp and Multi-Panel Transmission" The benefit of which is claimed and is incorporated herein by reference in its entirety. [Background technology]

[0002] Large-scale multiple input multiple output (MIMO) systems are It is expected to enhance data throughput and reliability in future 5G systems. To improve reliability, coverage, and capacity through flexible deployment scenarios Therefore, multiple transmission / reception points (multi-TRP) are important in 5G. For example, , supporting the exponential growth of mobile data traffic in 5G and providing coverage. To enable the extension of the service, the wireless device may support multiple TRPs (e.g., (e.g., cellular, small cells, picocells, femtocells, remote radio heads, relay nodes) It is anticipated that the network will be accessed by Summary of the Invention [Problem to be solved by the invention]

[0003] Beam Failure Detection (BFD) and Beam Failure Recovery Failure Recovery (BFR) may be on a cell-by-cell basis, but It is not unit-based. BFR is for SpCell or BFR is for SCe In the case of cell-based multi-TRP, the PCell or Regardless of the Scell, even if the radio link to one TRP fails, the radio link to another TRP The link may still function. Rio supports BFD and BFR based on multiple links with multi-TRP. It may be preferable to support [Means for solving the problem]

[0004] In this specification, in particular, BFD with multi-TRP transmission is supported or multi-TRP transmission is supported. A method, system and device for supporting BFR using TRP transmission is disclosed. In the case of BFD with multi-TRP transmission, 1) beam failure resource set and candidate Explicit configuration options for beam Reference Signal (RS) list sets, or or 2) the UE is provided with a clear beam obstruction resource set and candidate beam RS list set. If not provided, there may be multiple options, such as implicit configuration options. Regarding BFR with multi-TRP transmission, 1) using contention-free PRACH 1) BFR using PUCCH; 2) BFR using contention-free 2-step RACH There may be multiple options, such as 4) BFR with PUSCH, or 4) BFR with PUSCH. do.

[0005] This Summary is provided in a simplified form to provide an overview of the Detailed Description, which is further described below. This Summary is provided to introduce a selection of key features or embodiments of the claimed subject matter. It cannot identify qualitative characteristics or be used to limit the scope of the claimed subject matter. Moreover, claimed subject matter is not intended to be a It is not intended to be limited to solving any or all of the disadvantages. [Brief explanation of the drawings]

[0006] A more detailed understanding may be had from the following description, given by way of example in conjunction with the accompanying drawings, in which: It is possible. [Figure 1] FIG. 1 illustrates an exemplary multi-TRP transmission. [Figure 2] FIG. 1 illustrates an exemplary multi-panel transmission. [Figure 3] FIG. 1 illustrates an exemplary UE using multi-TRP and multi-panel transmission. [Figure 4A] FIG. 1(a) illustrates an exemplary SCell configured with only DL. [Figure 4B] (b) An exemplary SCell configured for DL ​​and UL transmission. [Figure 5] FIG. 1 illustrates an exemplary TRP with which a CORESET ID may be associated. [Figure 6A] 1 illustrates an exemplary CC supporting two TRP transmissions; (a) an ideal backhaul; [Figure 6B] (b) An example CC supporting non-ideal backhaul and a UE with two TRP transmissions. [Figure 7A] FIG. 1 illustrates two exemplary CCs supporting two TRP transmissions; (a) an ideal backhaul; [Figure 7B] (b) A diagram showing a UE with two exemplary CCs supporting a non-ideal backhaul and two panels showing two TRP transmissions. [Figure 8] A diagram showing an exemplary failureDetectionResource set mapping relationship between CC and radio link / multi-TRP. [Figure 9]FIG. 1 illustrates an example method flow for implicit beam obstruction detection. [Figure 10] FIG. 1 illustrates an exemplary, well-defined configuration method for BFD operations. [Figure 11A] FIG. 1 illustrates two exemplary CCs (CC1 has DL and UL, while CC2 has only DL) using two TRP(a) ideal backhauls. [Figure 11B] FIG. 10 shows two exemplary CCs (CC1 has DL and UL, while CC2 has only DL) using two TRP (b) non-ideal backhauls and two panels. [Figure 12] FIG. 1 illustrates an exemplary BFR method. [Figure 13] A diagram showing an example CFRA transmission using BFR when the CC has both DL and UL. [Figure 14] A diagram showing an example CFRA transmission using BFR when multiple CCs have both DL and UL. [Figure 15] A diagram showing an example CFRA transmission using BFR when one CC has both DL and UL, but the other CC has only DL. [Figure 16] FIG. 1 illustrates exemplary PUCCH transmission opportunities for BFR when CC uses DL and UL ideal backhaul. [Figure 17] FIG. 10 illustrates exemplary PUCCH transmission opportunities for BFR when multiple (two) CCs use DL and UL ideal backhaul. [Figure 18] FIG. 1 illustrates exemplary PUCCH transmission opportunities for BFR when CC uses DL and UL non-ideal backhaul. [Figure 19] 1 illustrates exemplary PUCCH transmission opportunities for BFR when two CCs, CC1 with DL and UL and CC2 with only DL, use non-ideal backhaul between TRP1 and TRP2. The UE is equipped with two panels. [Figure 20]FIG. 10 illustrates an example two-step contention-free RACH for BFR of an SCell with DL only. [Figure 21] FIG. 10 illustrates exemplary MAC CE content of MsgA for BFR when SCell has only DL. [Figure 22] A diagram showing exemplary MAC CE contents of MsgA for BFR when SCell has both UL and DL. [Figure 23] FIG. 1 illustrates a BFR MAC CE using a 4-octet bitmap (legacy). [Figure 24] A diagram showing BFR MAC CE using a 4-octet bitmap including an L field. [Figure 25] A diagram showing BFR MAC CE using a 4-octet bitmap including an L field. [Figure 26] 10A-10C illustrate example displays (e.g., graphical user interfaces) that may be generated based on methods, systems, and devices for beam failure detection and recovery using multi-TRP and multi-panel transmission. [Figure 27A] FIG. 1 illustrates an exemplary communication system. [Figure 27B] FIG. 1 illustrates an example system including a RAN and a core network. [Figure 27C] FIG. 1 illustrates an example system including a RAN and a core network. [Figure 27D] FIG. 1 illustrates an example system including a RAN and a core network. [Figure 27E] FIG. 1 illustrates another example of a communication system. [Figure 27F] 1 is a block diagram of an example apparatus or device such as a WTRU. [Figure 27G] FIG. 1 is a block diagram of an exemplary computing system. DETAILED DESCRIPTION OF THE INVENTION

[0007] Multi-TRP and Multi-Panel Transmission - Increased versatility and robustness are achieved with Multi-TRP and and ideal and non-ideal backhaul networks using multi-panel transmission. It is recognized that this may be achieved through both internet and mobile networks. From a PHY perspective, the goal may be to make the TRP-UE link relatively independent. For example, the UE may receive the A of the PDSCH from TRP1 for one PUCCH transmission. / N is multiplexed, and A / N is divided for each TRP.

[0008] Ideal backhaul, such as point-to-point connections using optical fiber, is and the core network. Note that an ideal backhaul would have a latency of less than 2.5 microseconds and a latency of 10 Sometimes defined as Gbps throughput. xDSL, microwave and trunk Non-ideal backhaul networks can lead to significantly longer latency times in the network. This may result in:

[0009] As shown in Figure 1, in a multi-TRP network, a UE may communicate with multiple TRPs. Typically, the TRPs are accessed by the UEs in different beams. For a typical backhaul network, non-interfering simultaneous transmissions from multiple TRPs are essential, especially for the TR May improve performance at the edge of a P's coverage area. The transmission may improve both PDSCH and PDCCH performance.

[0010] Multi-panel deployment is supported in TRP for multi-beam transmission and reception. The term "TRP" as disclosed herein means Network Side Panel. Multi-panel deployment may be supported in UE. The term "panel" may refer to a panel (e.g., an antenna array) of a UE.

[0011] Multi-panel transmission, where a UE may transmit from multiple panels, improves spectral efficiency. It is known that the transmission from the panel can be coherent or non-coherent. The concept of multi-panel transmission is shown in Figure 2. Each UE panel has a different directionality. Therefore, the best beam or TRP for reception is determined by the The UE is the best TR for a given panel based on measurements. P or beam and feeds that information back to the network. Accordingly, the network determines which beam or TRP is used for PUCCH / PUSCH reception. Each of the Panel-TRP links can be independently Since the link can be considered as a single unit, no coordination between the UE panels is required.

[0012] Multi-TRP PDSCH transmission - traditionally through multiple layers on the same time-frequency resource Codeword transmission may be supported in DL and UL. The CW (Continuous Waveform) may be transmitted by independent beams from different TRPs. Therefore, the CW or DMRS ports per layer may have different QCL assumptions. However, in non-ideal backhaul networks where latency is a concern, , it may be desirable to manipulate TRPs independently whenever possible.

[0013] Therefore, the goal of wireless communication is to achieve downlink for multi-TRP and multi-panel transmission. The purpose of this standard is to enable the extension of link and uplink signaling.

[0014] Multi-TRP PD so that the UE can recognize PDSCHs from different TRPs separately. The procedure to support SCH transmission is to use individual HARQ ACK codes per TRP. This is being considered along with the book. The UE is DSCH2 is received, and in response, Ack1 (for PDSCH1) is sent to TRP1. An example of sending Ack2 (for PDSCH2) to TRP2 is shown in Figure 3. SCH1 and PDSCH2 may correspond to the same or different HARQ processes. Note that the UE must be aware of the received TRP so that it can send an Ack corresponding to the desired TRP. An identifier may be used to associate the received PDSCH with the transmitted TRP.

[0015] SCell configuration in NR - SCell has a downlink (DL) transmission In this case, only the primary cell for the UE is configured. In another scenario, the UL may be transmitted only on the serving cell. A Serving Cell (SCell) is a cell that transmits data via uplink (UL) and DL. In Figure 4A, only DL transmission is configured on the SCell. (b) shows the case where both DL and UL transmissions are configured on the SCell. In Figure 4A, the UE transmits PUCCH / PSCC via the PCell. In Figure 4B, the UE transmits PUCCH H on both the SCell and PCell. / PSCCH or other physical channels, such as PRACH, may be transmitted.

[0016] Beam Failure Request in Rel-15 - In Rel-15, a beam failure is detected and When the candidate beams are defined, the UE sends the RRC message PRACH-ResourceDedicatedBFR The PRACH of the identified best candidate beam is transmitted according to the RACH configuration provided by In Rel-15, BFR is a contention-free random access (BFR) protocol. This may be done via a Conversion-Free Random Access (CFRA) procedure.

[0017] In Rel-15, RRC BeamFailureRecovery in the BWP-UplinkDedicated field The Config IE specifies the RACH resources for beam failure recovery in case of beam failure detection and It may be used to configure candidate beams to the UE. The UE may r in the RRC IE BeamFailureRecoveryConfig field for monitoring the PDCCH C through a link to a search space set provided by recoverySearchSpaceId ORESET may be provided. RecoverySearchSpaceId is the BFR random access It may indicate the search space to use for the access response.

[0018] JPEG0007823263000001.jpg68170

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[0020] CORESET associated with a TRP - multi-TRP transmission, one in a PDCCH configuration Or multiple CORESETs correspond to one TRP. Therefore, CORESET Identification (ID) is bound to the TRP and P via CORESET A PDSCH grant may be associated with that TRP. / N is transmitted to that TRP. In this way, PUCCH transmission per TRP is supported. The relationship between the CORESET ID and the TRP ID in the PDCCH configuration The sequence is as depicted.

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[0023] The TRP is responsible for one or more Rx beams of the TRP by CSI-RS or SSB. The UE may determine the Tx beam for downlink transmission based on the UE measurements.

[0024] U for monitoring NR-PDCCH on multiple beam-pair links from multiple TRPs E Rx beam configuration parameters are determined by higher layer signaling or MAC CE. At the very least, NR is Between the L RS antenna port and the DL RS antenna port for demodulating the DL control channel Supports indication of spatial QCL assumptions for NR-PDCCH. Possible signaling methods for the signaling (e.g., for monitoring NR-PDCCH) The configuration method for this purpose is MAC CE signaling, RRC signaling, DCI signaling, etc. nulling, transparent or implicit by specification, and the signaling methods for these There are combinations.

[0025] For reception of unicast DL data channels from multiple TRPs, NR uses the DL R Spatial QC between the S antenna port and the DM-RS antenna port of the DL data channel Supports indication of L assumptions. Information indicating the RS antenna port is provided by DCI ( The information is indicated via the DM-RS antenna port and QCL. The RS antenna port for the DL data channel is shown. The different sets may be denoted as QCLs with different sets of RS antenna ports. .

[0026] (Beam obstruction detection using multi-TRP transmission) BFD-UE using CC or multi-CC multi-TRP transmission In Figures 6A and 6B, the network A network (e.g., gNB) may configure multiple (e.g., two) data links. At this time, the UE 200 transmits the TRP 120 from a specific CC (PCell or SCell). 1 and TRP2202 may receive data simultaneously. Ideal or non-ideal buffers between TRPs (e.g., TRP1201 or TRP2202) Depending on the type of network, the network can be configured with a single DCI or Multiple PDSCHs can be provided through multiple DCIs, or multiple PDSCHs can be provided through multiple DCIs as shown in Figure 6B. Multiple PDSCHs may be provided through the DCI.

[0027] In Figures 7A and 7B, the network is configured with multiple (e.g., two) data links. In this case, the UE 200 may set a different CC (PCell or SCell). Data may be received simultaneously through TRP1201 and TRP2202. Even if CC1 is a PCell and CC2 is an SCell, or vice versa good.

[0028] JPEG0007823263000005.jpg57170

[0029] Explicit configuration, e.g., higher layers (RRC) must specify reference signal resources (e.g., For example, CSI-RS) is configured. In the case of multiple CCs (e.g., as shown in Figures 6 and 7), the following are required for BFD operation: The following explicit construction method can be applied:

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[0034] In some cases, N is the number of serving cells or CCs in the band.

[0035] In some cases, N may be the number of serving cells or CCs (herein referred to as serving cell / CC). CC) list, e.g., TCI relations (e.g., one or more TCI description activation or deactivation) may be updated at the same time The number of serving cells or CCs configured in the serving cell list.

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[0037] Different links (e.g., corresponding to different TRPs or sets of TRPs) may be associated with different C These CORESET pools may be associated with different CORESET pools. By the ORESET pool index, e.g., RRC parameter coresetPoolIndex-r 16 can be used to distinguish between

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[0047] 9 shows an exemplary method flow. As shown in FIG. 9, in step 210, A plurality of different CORESET pools (e.g., 2) of serving cells are configured in the UE 200. In step 211, the TCI description of the CORESET of the serving cell is transmitted to the UE 200. In step 212, the first set of BFD RSs may be configured as a first COR. It may be implicitly determined from the RS in the TCI description of the CORESET in the ESET pool. In step 213, the UE 200 performs BFD based on the first set of BFD RSs. In step 214, a second set of BFD RSs is added to the second CORESET pool. In step 215, U E200 may implement BFD based on a second set of BFD RSs.

[0048] An ideal CC or multi-CC backhaul as shown in Figures 6A and 7A, respectively. In the case of multi-TRP transmission using In this case, the UE 200 may use the CSI- Any (beam) fault detection resources provided by higher layers to monitor RS or SSB If not provided, the UE 200 uses each PDCCH that the UE 200 uses to monitor the PDCCH. The RS set indicated by the TCI-state of each (single) CORESET must be used. There is.

[0049] Single DCI scheduling for multi-TRP PDSCH is suitable, for example, in the following cases: It is available. UE200 performs upper layer processing for "FDMSchemeA", "FDMSchemeB", and "TDMSchemeA". If the UE 200 is configured with the parameter RepSchemeEnabler set, the DCI field Two TCI descriptions at the code position of the "Transmission Configuration Indication" and DCI field "Antenna Port(s)" for DM-RS ports in one CDM group. If you are shown this. The UE 200 sends a pdsch-Time containing RepNumR16 in the PDSCH-TimeDomainResourceAllocation. A higher layer parameter PDSCH-c indicating at least one entry in the eDomainAllocationList When configured by config.

[0050] For example, if the UE 200 indicates two different values ​​of CORESETPoolIndex in the ControlResourceSet, When configured by the higher layer parameter PDCCH-Config, multiple multi-TRP PDSCHs are A number of DCI scheduling schemes may be applicable.

[0051] The following description schedules multiple links of the CC shown in FIG. 6A or multiple CCs shown in FIG. 7A. Regarding the options for BFD operation when a single DCI is used to control This is explained in Table 1 below. [Table 1]

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[0054] A CC or multi-CC non-ideal backhoe as shown in Figures 6B and 7B, respectively. In the case of multi-TRP transmission using multiple PDCCHs / DCIs or separate PDCCHs / DCI may be supported to schedule multiple PDSCH receptions. In this case, the UE 200 may be provided with multiple / separate PDCCHs with multilink. Therefore, the UE 200 can select the CORESET for each link without any ambiguity. DCI can be mapped independently.

[0055] In this case, BFD operation using implicit configuration is not possible with CC or multi-CC ideal balances. The same disclosed approach can be used for multi-TRP transmission using a block hole. Furthermore, which TCI description is configured in the CORESET is the default QCL for the PDSCH. It is necessary to clarify whether this is an assumption.

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[0064] With the foregoing in mind, Figure 10 presents an exemplary UE physical layer procedure flow. In step 220, the first set of RSs for BFD and RSs are sent to the BWP. The second set of RSs is configured in the UE 200. The first RS of the first set of RSs is the first TRP2 01. A second RS of the second set of RSs is transmitted from a second TRP 202. In step 221, the BWP is assigned a R for identifying a new beam (e.g., a candidate beam). A third set of S and a fourth set of RS are configured in the UE 200. The third RS is transmitted from the first TRP 201. The fourth RS of the fourth set of RSs is transmitted from the second TRP 202. In step 222, if the BWP is active, the first R In step 223, the UE performs BFD based on the S and the second RS. If the radio link quality of some or all of the RSs in a set falls below a threshold, the physical layer Periodic indications (e.g., signals or messages) of this The R in the second set is provided to other layers, where the other layers are layers above the physical layer. If the radio link quality of some or all of S falls below a threshold, the physical layer In step 224, the layer (e.g., the physical layer or higher) Upon request, new beam characteristics will be created based on the third set of RS or the fourth set of RS. The setting is performed by the UE.

[0065] Continuing with Figure 10, the procedure (beam fault detection and recovery) consists of two layers ( Step 220 to Step 2 The 24 procedure may be dominated by the PHY portion. Part of the MAC portion may include: In step 225, the MAC may be configured to receive the first or second link (e.g., the first and second links of the RS). PHY indication of radio link quality for the first and second links (corresponding to the second set) In step 226, based on receiving a certain number of PHY indications, In step 227, the MAC may declare a beam failure on the first or second link. ,Based on the beam failure of the first link, the MAC corresponds to the third set of RS of the PHY Request the PHY to perform a new beam identification for the first link. Based on the beam failure of the second link, the MAC will select the fourth set of RSs of the PHY. We will be implementing a two-link New Beam Indicator (NBI). Each layer may send or receive indications throughout the entire system. Although the example is shown as receiving an indication, other layers may send such an indication. Please note that it is also possible that

[0066] JPEG0007823263000031.jpg68170 [Table 2-1] [Table 2-2]

[0067] (Beam obstruction request using multi-TRP transmission) To support multi-TRP transmission, the disclosed subject matter provides a beam fault recovery request (BEAM Failure Recovery Request (BFRQ) transmission using PUCCH or CFRA During the BFR procedure, the UE 200 may support the following for each TRP of the CC: Only measured CSI-RS resource index (CRI) or synchronization signal block (SSB) One (e.g., best) bee corresponding to the resource index (SSBRI) Only the program may be reported.

[0068] To support BFR using multi-TRP transmission of a CC or multiple CCs, The following options are considered: 1) BFR using contention-free PRACH, 2) PU BFR with CCH, 3) BFR with contention-free 2-step RACH, or 4 )PUSCH use BFR.

[0069] The method herein provides multi-panel transmission of a CC or multiple CCs and multi-TR BF via UL signal (PRACH) / channel (PUCCH, PUSCH) using P It is disclosed in relation to the method of implementation of R.

[0070] The disclosed scenarios are considered for BFR operations with multiple TRPs or multiple panels. In the first scenario, (a) ideal backhaul and multi-panel or (b) a UE with a non-ideal backhaul and multiple panels. In the second scenario, a single CC may use multiple TRP transmissions via , (a) UE with ideal backhaul and multi-panel, or (b) UE with non-ideal backhaul. Multi-TRP transmission by UE with multiple CCs (D In a third scenario, (a ) a UE with an ideal backhaul and multiple panels, or (b) a UE with a non-ideal backhaul UE with multiple panels and multiple TRP transmission by multiple CCs (some D Some CCs may use It is possible.

[0071] As shown in Figures 6A and 6B, the ideal and non-ideal backhaul CC (with both DL and UL) using multi-TRP by The UE 200 can be equipped with multiple panels. In this case, the UE 200 uses the Use a single DCI for each link and a UCI for multiple links (e.g. from different panels). A single UCI may be used for linking.

[0072] As shown in Figures 7A and 7B, ideal and non-ideal backhaul Multiple CCs (with both DL and UL) using multiple TRPs, and BF UE200 that can be equipped with a multi-panel for R is shown. In case UE 200 schedules multiple links (e.g., from different TRPs) Use multiple DCIs to transmit and receive data, and multiple DCIs to transmit data (e.g. from different panels) Any number of UCIs may be used.

[0073] CC204 (SCell) having only DL, for example, as shown in FIG. When there is no UL transmission, the UE 200 may select a CC (e.g., PC ell) may transmit UCI. If the UE200 is equipped with a multi-panel for UL transmission, In this case, the UE's multiple panels transmit multiple UCIs to the same TRP as shown in Figure 11. may be used to

[0074] Contention-free PRACH using BFR-Beam Failure Recovery Request (BFRQ) Contention-Free PRACH (CFRA) may be used. If DL and UL are configured as CC, in this case, PR is ACH transmissions may be carried out on the same CC. Multiple TRPs may be supported on a CC. Depending on the number of links from the same It may be configured by CC.

[0075] In the case of a CC that only has DL (e.g., SCell), the CC can perform UL transmission. Therefore, the CFRA-based BFR is implemented in CC with both DL and UL. It is necessary to

[0076] BFRQ can be classified into several schemes, such as partial beam obstruction or total beam obstruction. Regarding partial beam obstruction, in multi-TRP transmission, UE 200 can simultaneously There are cases where multiple links for transmission are configured. Therefore, multiple links (multi-TR) P) of the beam obstructions occurring between them, but not all of them, means at least one of them. A beam obstruction can occur in the case of partial beam obstruction. , BFRQ may be implemented on links without beam obstructions.

[0077] JPEG0007823263000034.jpg33170 [Table 3]

[0078] JPEG0007823263000036.jpg58170 [Table 4]

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[0083] For example, it may be assumed that two DL and UL links are set up. For example, as shown in FIG. 7A or FIG. 7B, DL link 1 is connected to the TR of CC203, respectively. DL Link 2 is from TRP2202 in CC204. In addition, the UE 200 may have two panels, e.g., UL Link 1 to TRP1201 and UL Link 2 to TRP2202 on CC204 In this scenario, the BFR with CFRA is shown in Figure 14. It is depicted.

[0084] However, when only DL is configured in CC as shown in Figure 14, UL transmission in CC Therefore, it may be impossible to configure the CFRA transmission for BFR. may be implemented on a PCell having DL and UL or their CCs.

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[0086] For example, it is assumed that multiple (e.g., two) DL and UL links are configured. As shown in Figure 14, DL link 1 is connected to TRP12 of CC203. 01, and DL Link 2 is from TRP2202 on CC204. However, CC204 may only have DL. In addition, UE200 has two panels. Therefore, both UL links 1 and 2 are connected to TRP1201 on CC203. The CFRA-based BFR in this scenario is depicted in Figure 15.

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[0089] It has both BFR-DL and UL which may be transmitted via PUCCH / UCI. For reporting beam failure by CC multi-TRP transmission, UE200 has: 1) PU CCH or PRACH BFR resources, or 2) PUCCH and PRACH In the case of both PUCCH and PRACH, PUCCH and If both PRACH and BFR are configured, PUCCH resources for BFR or BFR Both may be used whenever PRACH resources for BFR are available. Which resource to use for this may be up to the UE implementation.

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[0091] Dedicated PUCCH resources for PUCCH opportunities are provided by higher layers (RRC). The configuration parameters may include PUCCH format, starting PRB / PRB offset, Frequency hopping (inter-slot, intra-slot), period, first symbol (start symbol) / startingSymbolIndex, number of symbols / nrofSymbols, starting CS index (initialCyc licShift), number of PRBs / nrofPRBs, time domain OCC (occ-Length, occ-Index), Additional DM-RS, maximum code rate, number of slots, pi2BPK and ssb-perPUCCH-Occas ion. As shown in FIG. 11A or 11B, a dedicated PUCCH transmission opportunity may include P For BFR using PUCCH, g The NB may configure periodic PUCCH resources for BFRQ transmissions. However, If BFR is not present in a PUCCH opportunity, UCI / PUCCH transmission may not occur. be.

[0092] In the case of prioritization, the priority rule of UCI is BFR>HARQ-ACK / SR> It may also be specified as periodic CSI (P-CSI).

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number

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number

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[0098] Like the BFR use case with CFRA, BFR using PUCCH resources This may depend on one or more of the following deployment cases: Multi-TRP transmission using CC or multi-CC ideal backhaul as shown In the first deployment case, a single DCI schedules multiple PDSCH receptions. In this case, a dedicated PUC for multi-link (from multi-TRP) The CH transmission opportunity may be used and the link / TRP ID may be used for BFR PUCCH. It may be indicated by DM-RS.

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[0100] JPEG0007823263000054.jpg18170

[0101] A CC or multi-CC non-ideal backhoe as shown in Figures 6B and 7B, respectively. In the fourth scenario, where multiple TRPs are transmitted using a 1000-Mbps hop count, the multi-TRP / individual DCI is transmitted over multiple hop counts. In this case, the B Separate dedicated PUCCH transmission opportunities may be configured in the UE 200 for FR. Dedicated PUCCH transmission opportunities are time overlapped via TDM, FDM, or SDM It may be based on frequency.

[0102] In the fifth scenario, if the SCell has only DL, the BFR PUCCH is BFR PUCCH resources may be configured in the Cell. It may be configured based on a non-ideal backhaul.

[0103] JPEG0007823263000055.jpg52170

[0104] For example, it may be assumed that multiple DL and UL links are configured. As shown in A, DL link 1 is from TRP1201 of CC203. DL Link 2 is from TRP2202 in CC204, which is the ideal backhaul It is located between the TRP1201 and TRP2202. In addition, the UE200 has two panels. For example, UL link 1 to TRP1201 in CC203, and CC204, respectively. UL Link 2 to TRP2202. H using BFR is depicted in Figure 17. In this case, BFR using PUCCH The transmission may be carried on UL CC203 and the Link / TRP ID may be BFR P Therefore, only CC203 may be distinguished by the DM-RS for UCCH. It may be configured to use PUCCH for R.

[0105] JPEG0007823263000056.jpg53170

[0106] For example, as shown in Figure B, multiple items are set to CC203, and CC DL link 1 of the 204 is from TRP1201, DL link 2 is from TRP220 2, and a non-ideal backhaul exists between TRP1201 and TRP2202. However, CC204 only has DL. In addition, The UE200 is connected to two panels, e.g., the UL relay to the TRP1201 of the CC203, respectively. UL Link 1 to the TRP2202 on the CC204, and UL Link 2 to the TRP2202 on the CC204. The BFR using PUCCH in this example is shown in Figure 19. BFR PUCC H1 and BFR PUCCH2 are separate. In this case, BFR PUC It may be assumed that CH1 and BFR PUCCH2 are based on TDM.

[0107] During the BFR procedure, the UE 200 uses the configured CSI-RS or SS per CC. The best measured quality of the CRI or SSBRI from a set of B-indexes (e.g. RSRP) (CSI-RS or SSB index may be reported as clear or (Note that this may be based on an implicit configuration.) The link control information (UCI) is presented in Table 5 (with CRI or SSBRI for BFR). Example mapping order of CSI fields in reporting).

[0108] The UCI that transmits the CRI / SSBRI for BSR is 1) shown in Figure 6A or Figure 6B 1) a single CC with multi-TRP / panel transmission such as that shown in FIG. 7A or 7B; or 2) Used in use cases such as multiple CCs with multi-TRP / panel transmission, as shown in It is okay to do so. [Table 5]

[0109] JPEG0007823263000058.jpg32170

[0110] JPEG0007823263000059.jpg42170

[0111] The following method is a contention-free two-step RAC for BFR on the PCell. Can be used for H.

[0112] JPEG0007823263000060.jpg58170

[0113] Contention-free 2-step RACH-based BFR on SCell with DL only In this case, the contention-free PRACH preamble and PUSCH resource (PUSCH R There may be a one-to-one mapping between the PRU and the M When sgA transmission is performed, the DMRS port or DMRS sequence is implicitly indicated to the physical layer. Alternatively, the DMRS port or DMRS sequence may be The QoS may be implicitly determined by the physical layer based on the QoS.

[0114] For example, as shown in FIG. 11B, multiple DL and UL links are connected to CC203 and CC204's DL link 1 is from TRP1201, DL link 2 is from TRP2202 and non-ideal backhaul is from TRP120 It is sometimes assumed that CC204 is between 1 and TRP2202. However, CC204 is D In addition, the UE 200 may have only two panels, e.g., C UL Link 1 to TRP1201 on C203, and UL to TRP2202 on CC204 It may be equipped with L-Link 2.

[0115] The configuration example of Figure 11B, the contention-free 2-step RACH for BFR, is shown in Figure 11B. 20. In this example, the UE 200 receives the PRACH preamble and the MsgA A timing offset may be configured between the For example, the PRACH preamble and the PUSCH may be configured as TDM or FDM Note that the contention frame for BFR may be transmitted in the same slot. In order to transmit the two-step RACH on the PCell, the UE 200 transmits the PRACH and The UL spatial relationship of the PUSCH and PUSCH transmissions, e.g., TCI description, is monitored by the UE 200 on the PCell. automatically based on the factor that the CORESET ID is the same as the lowest CORESET ID that can be viewed. is decided.

[0116] JPEG0007823263000061.jpg109170

[0117] JPEG0007823263000062.jpg24170

[0118] JPEG0007823263000063.jpg48170

[0119] JPEG0007823263000064.jpg33170

[0120] However, in the use case where only DL is configured in the SCell, the 2-step RACH If an SCell is configured with both DL and UL, this The SCell can transmit over those faulty links without the assistance of other cells. Therefore, those failed link indexes are included in the MAC CE payload. Therefore, the MAC CE content is as shown in Figure 22. can be reduced to

[0121] PUSCH will be reported by a single report by the BFR-MAC CE. Failed CC index, new beam information (if any), or beam failure index In this case, the MAC CE resources are allocated to a dedicated PUCCH for BFR or or PRACH. Failed CC index, new beam Information, or CORESET ID, is used in dedicated PUCCH or PRACH for BFR. Since SCel may be reported by a single report by MAC-CE without using The delay of l-BFR may be large and may not be controllable by gNB. When a normal SR is received, the gNB will typically immediately start PUSCH transmission. This may be because the schedule may not be met. In this case, for example, The following use cases are possible:

[0122] The first use case is BFR on some SCells that only have DL. and BFR if there are available resources for PUSCH transmission on the PCell Use a contention-free RACH or two-step RACH approach for The disclosed MsgA content may be carried by a normal PUSCH without any need for a PUSCH.

[0123] JPEG0007823263000065.jpg33170

[0124] JPEG0007823263000066.jpg25170

[0125] JPEG0007823263000067.jpg22170

[0126] Regarding UL Panel ID indication, the UL Panel ID is the DM- It may be conveyed via the RS or explicitly signaled in the PUSCH payload.

[0127] In some cases, the MAC CE may experience beam obstruction in one or more serving cells. or its serving cell(s) to indicate one or more links. (Also, RACH-based BFR as mentioned above, e.g., two-step RACH may be used.) (This is also applicable to

[0128] For example, an exemplary 4-octet code indicating beam or non-beam impairments of a cell or link: Consider the MAC CE of FIG. 23, which includes a bitmap.

[0129] C m The field is used for beam failure detection and service identification with, for example, ServCellIndex m. Indicates the presence of an octet containing the AC field for a processing cell. m centre The field is used when a beam failure is detected and the octet containing the AC field is Indicates that it is present for the serving cell with dex m. C set to 0 m Phi The field is set to 0 if no beam obstruction is detected and the octet containing the AC field is Indicates that the cell does not exist for the serving cell with dex m. The octets are present in ascending order based on ServCellIndex.

[0130] In this example, 32 serving cells or links may be shown. In the case of six serving cells, each cell is considered to have two links.

[0131] In one example, C0 and C1 are the first cells (e.g., the lowest index ServCell the first link (e.g., i=0) and the second link (e.g., i=1) of the serving cell with Index 0. The next fields C2 and C3 respectively indicate the second link (e.g., i=1). It shows the first link and second link of the cell, etc.

[0132] In various examples, different serving cells have different numbers of configured links. The number of links with serving cell index k and the low link index of serving cell k If the total number of links with indexes is m-1, then C m denotes link i in cell k C0 indicates the first link of the serving cell with the lowest index There are cases where this happens.

[0133] In another example, C0, C1, ..., C 15 are serving cells 0, ...1, respectively. Shows the first link of 5. C 16 , C 17 ,...C 31 are the serving cell 0, respectively. , ...15 shows the second link.

[0134] In various examples, different serving cells have different numbers of configured links. M (where M is the highest serving cell index of this MAC entity). index), C m may denote the first link cell m, where m is greater than M If C m may refer to the second link in a cell that has more than one link configured. be.

[0135] JPEG0007823263000068.jpg49170

[0136] C m The field is beam failure detection, and the serving cell with ServCellIndex m The example showing the presence of an octet containing an AC field for A quotet may also contain a link field (L) as shown in Figure 24. For example, When a single link is configured to the corresponding serving cell, the AC Octave is used as shown in Figure 23. The tet contains a 1-bit R (reserved, set to 0) field. If multiple links, e.g., two links, are configured in the corresponding serving cell, the L-feature The field indicates whether the next AC octet corresponds to the same cell but to a different link. For example, if L=0, the next AC octet indicates the C field. For L=1, the next The AC octet corresponds to another link with a detected beam failure in the same serving cell. If different links are associated with different sets of candidate RSs, The index of the link may be removed from the candidate RS IDs by the network. Note that in some cases, the number of links corresponds to different links of the serving cell. The AC octets are arranged in link index order. In this case, the AC field is set to 0, one or more links of the same serving cell fail, and M The network removes the failed link even if it is included in the AC CE. In one example, the AC field may be set to 0 (e.g., the corresponding candidate RS I D does not exist), the reserved (otherwise used for the candidate RS ID) One or more of the bits are used to indicate the corresponding link index. This resolves the ambiguity of the failed link when there is no corresponding candidate RS ID. It can be decided.

[0137] JPEG0007823263000069.jpg83170

[0138] Table 6 contains exemplary abbreviations and definitions for the subject matter disclosed herein. [Table 6-1] [Table 6-2] [Table 6-3]

[0139] Entities that perform the steps described herein, such as those shown in Figures 1 through 20 It should be understood that the steps may be logical entities. 7C to 27G, the media of a device, server, or computer system. The present disclosure may be stored in memory and executed by a processor. Omitting steps, combining steps, or adding steps between the example methods will be considered.

[0140] FIG. 26 illustrates a video system using multi-TRP and multi-panel transmission as discussed herein. may be generated based on system fault detection and recovery methods, systems and devices. 1 illustrates an exemplary display (e.g., a graphical user interface) that may be used. The play interface 901 (e.g., a touchscreen display) can be used to play BFD or Multi-TRP, including BFR-related parameters, method flow, and related current status and text related to beam fault detection and recovery using multi-panel transmission. The progress of any of the steps discussed herein (e.g., For example, a message sent or step successful) may be displayed in block 902. Additionally, a graphical output 902 is displayed on the display interface 901. The graphical output 903 may be a visual representation using multi-TRP and multi-panel transmissions. Geometry of devices implementing methods, systems and devices for system fault detection and recovery - Patents.com shape, graphical output of the progress of any method or system discussed herein, etc. It's okay to have it.

[0141] 3rd Generation Partnership Project: 3GPP (registered trademark) is a technology group that develops and distributes radio access, core transport networks, and sub-networks. service capabilities (including those affecting encoding / decoding, security, and quality of service) It develops technical standards for cellular telecommunications network technologies, including Access Technology (RAT) standards include WCDMA (commonly referred to as 3G), LTE (commonly referred to as 4G), LTE-Advanced, and also referred to as "5G" 3GPP NR standard development continues and will be the next generation of wireless It is expected that the new access technology (new RAT) will be included in the definition of new RAT below 7GHz. New flexible radio access provisions and new ultramodern technologies above 7GHz It is envisaged that this will include provisions for mobile broadband wireless access. Flexible wireless access will be driven by new non-backward compatible technologies in new frequency bands below 6GHz. It is assumed that these will consist of interchangeable radio access and will be multiplexed together in the same frequency band. may address a broad set of 3GPP NR use cases with diverse requirements. It is envisaged that different modes of operation will be included. Ultra Mobile Broadband will e.g. For example, ultra-mobile broadband access for indoor applications and hotspots. It is envisaged that this will include the centimetre-wave and millimetre-wave frequency bands, which offer significant opportunities. Ultra Mobile Broadband is designed to deliver 7G bandwidth with cmWave and mmWave specific design optimization. It is expected that the LTE-2000 will share a common design framework with sub-GHz flexible wireless access. It is set forth.

[0142] 3GPP has developed a wide range of user experience requirements for data rate, latency, and mobility. It identifies various use cases that NR is expected to support, including: The broad categories of cases are enhanced mobile broadband (eMBB), ultra-high Reliable and Low Latency Communication (URLLC), Large Scale Machine Type Communication (mMTC), Network Operations (e.g., network slicing, routing, migration) and interworking, energy conservation), and vehicle-to-vehicle communications (V2V), Vehicle-to-Infrastructure Communication Communication: V2I, Vehicle-To-Network Communication Communication:V2N, Vehicle-To-Pedestrian Communication Vehicle-to-Peer (V2P) communication, and vehicle-to-peer (V2P) communication with other entities. Enhanced Vehicle-To-Everything (EV-To) -Everything: eV2X) communication. Services and applications include, for example, monitoring and sensors, to name a few. Network, device remote control, two-way remote control, personal cloud computing video streaming, wireless cloud-based office, and emergency responder connectivity Tee, car e-call, disaster warning, real-time games, multi-person video calls, autonomous driving , Augmented Reality, Tactile Internet, Virtual Reality, Home Automation, drones and aerial drones. All of these use cases and more are discussed herein.

[0143] FIG. 27A illustrates the system and method shown in FIGS. 1 through 20 as described and claimed herein. Beam Fault Detection and Recovery Method Using Multi-TRP and Multi-Panel Transmission Methods and devices may be used in a communication system 100. 00 may refer (generally or collectively) to the WTRU(s) 102. Wireless Transmit / Receive Unit (WTRU) 102a , 102b, 102c, 102d, 102e, 102f or 102g. The communication system 100 includes radio access networks (RANs) 103 / 104 / 105 / 1 03b / 104b / 105b, Core Network 106 / 107 / 109, Public Switched Telephone Public Switched Telephone Network (PSTN) 108, Internet 110 , and may include other networks 112 and network services 113. The network service 113 includes, for example, a V2X server, a V2X function, a ProSe server, a P roSe functions, IoT services, video streaming or edge computing It may include, etc.

[0144] The concepts disclosed herein may be applied to any number of WTRUs, base stations, networks, or networks. It will be appreciated that the WTRUs 102a, 102b, and 102c may be used in conjunction with other network elements. 2b, 102c, 102d, 102e, 102f, or 102g, respectively, in the wireless environment. may be any type of apparatus or device configured to operate or communicate with Each WTRU 102a, 102b, 102c, 102d, 102e, 102f or 10 2g is a handheld wireless communication device as shown in Figs. 27A, 27B, 27C, 27D, 27E and 27F, various use cases that can be considered for 5G wireless communication are shown. Each WTRU may be any type of device or network configured to transmit or receive wireless signals. may be equipped with or implemented in a device, and such equipment or devices, by way of example only, include user equipment (UE), mobile stations, fixed or Mobile subscriber units, pagers, cellular phones, personal digital assistants (Personal Digital Assistants) Personal Digital Assistant (PDA), smartphones, laptops, tablets, laptops, notebook computers, personal computers, wireless sensors, mass consumer Electronic products, wearable devices such as smart watches or smart clothing, medical or e-health devices, robots, industrial equipment, drones, cars, buses, trucks, trains It will be appreciated that examples of such vehicles include airplanes, trains, and the like.

[0145] The communication system 100 may also include a base station 114a and a base station 114b. In the example of FIG. 7A, each base station 114a and base station 114b is depicted as a single element. In practice, base stations 114a and 114b may be any number of interconnected base stations or The base station 114a may include the WTRUs 102a, 102b, and 102c. 102b and 102c, and wirelessly interfaces with at least one of the core network Work 106 / 107 / 109, Internet 110, Network Services 113, or other network 112. Similarly, a base station may be any type of device configured to facilitate communication. 114b includes remote radio heads (RRH) 118a, 118b, Receiving Point (TRP) 119a, 119b or Roadside Unit (RoadSide Unit) It: RSU) 120a and 120b and at least one of them by wired or wireless communication. -face, core network 106 / 107 / 109, Internet 110, one or more other networks 112 or network services 113 Any type of device configured to facilitate access to a communications network The RRHs 118a, 118b may be connected to at least one of the WTRUs 102, For example, a WTRU 102c may wirelessly interface with the core network 106 / 107 / 109, Internet 110, Network Services 113, or other facilitating access to one or more communications networks, such as network 112 The device may be any type of device configured to do so.

[0146] The TRPs 119a and 119b communicate wirelessly with at least one of the WTRUs 102d. The interface is the core network 106 / 107 / 109 and the Internet 110. , network services 113, or other networks 112. Any type of device configured to facilitate access to multiple communications networks The RSUs 120a and 120b may be connected to the WTRUs 102e or 102f. It interfaces wirelessly with at least one of these and connects to the core network 106 / 10 7 / 109, Internet 110, other networks 112, or networks to facilitate access to one or more communications networks, such as service 113 The base stations 114a, 114b, 114c, 114d, 114e, 114f, 114g, 114h ... b is the base transceiver station (BTS), Node-B, eNo de B, Home Node B, Home eNode B, Next Generation Node-B (gNod e B), satellite, site controller, access point (AP), It may also be a wire router.

[0147] The base station 114a may be part of the RANs 103 / 104 / 105. N also includes a Base Station Controller (BSC), a wireless network controller, and Radio Network Controller (RNC), relay nodes, and other base stations Similarly, the base station 114b may include a RA They may also be part of the BSC, It may also include other base stations or network elements (not shown), such as RNCs, relay nodes, etc. The base station 114a is wireless within a particular geographic area (not shown), sometimes called a cell. Similarly, the base station 114b may be configured to transmit or receive a particular It may be configured to transmit or receive wired or wireless signals within a geographic region, The physical domain includes multi-TRP and multi-panel transmission as disclosed herein. BEAM FAILURE DETECTION AND RECOVERY METHODS, SYSTEMS, AND DEVICES FOR USE IN CERTAIN RADIATION SYSTEMS Similarly, the base station 114b may also be referred to as a cell. configured to transmit or receive wired or wireless signals within a specific geographic area (not shown) The cell may be further divided into cell sectors. For example, the base station 114a The associated cell may be divided into three sectors. 114a may comprise, for example, three transceivers, one for each sector of the cell. In one example, the base station 114a may employ multiple-input multiple-output (MIMO) technology, and Thus, multiple transceivers may be utilized per sector of a cell.

[0148] The base station 114a may be connected to any suitable wireless communication link (e.g., radio frequency :RF), microwave, infrared (IR), ultraviolet (UV), air interface 115 / 116 / , which may be optical, centimeter wave, millimeter wave, etc. One of WTRUs 102a, 102b, 102c, or 102g through 117 The air interface 115 / 116 / 117 may communicate with any It may be established using any suitable radio access technology (RAT).

[0149] The base station 114b may be connected via any suitable wired (e.g., cable, fiber optic, etc.) or Wireless communication links (e.g., radio frequency (RF), microwave, infrared (IR), ultraviolet (UV) ), visible light, centimeter-wave, millimeter-wave, etc.), wired or air interface Through the 115b / 116b / 117b, RRH118a, 118b, TRP119a, 119b or one or more of the RSUs 120a, 120b. The air interfaces 115b / 116b / 117b may be implemented using any suitable radio access technology. (RAT) may be established.

[0150] RRH118a, 118b, TRP119a, 119b or RSU120a, 120 b may be any suitable wireless communication link (e.g., radio frequency (RF), microwave, infrared (IR) UV, visible light, centimeter waves, millimeter waves, etc.), - WTRU102c, 102d, 102 through interface 115c / 116c / 117c e, 102f. 5c / 116c / 117c can be established using any suitable radio access technology (RAT). It is okay to do so.

[0151] WTRU 102a, 102b, 102c, 102d, 102e, or 102f can be any Suitable wireless communication links (e.g., radio frequency (RF), microwave, infrared (IR), ultraviolet UV, visible light, centimeter-wave, millimeter-wave, etc.), sidelink communications, etc. may communicate with each other through the air interface 115d / 116d / 117d. The air interface 115d / 116d / 117d may be any suitable wireless access point. The information may be established using the RAT.

[0152] The communication system 100 may be a multiple access system and may be any of a variety of access modes, including CDMA, TDMA, and the like. One or more channel accesses such as DMA, FDMA, OFDMA, SC-FDMA For example, base station 1 in RAN 103 / 104 / 105 may adopt a 14a and WTRUs 102a, 102b, and 102c, or RANs 103b / 104 RRH118a, 118b, TRP119a, 119b, and RSU1 in b / 105b 20a, 120b and WTRU102c, 102d, 102e, 102f are universal Universal Mobile Telecommunications System (UM) TS), Universal Terrestrial Radio Access (UTRA), etc. The wireless technology may be implemented in accordance with Wideband CDMA (WCDMA) ) using the air interface 115 / 116 / 117 or 115c / 116c WCDMA is a high-speed packet access (Hi gh-Speed ​​Packet Access (HSPA) or Evolved HSPA (HSP HSPA is a high speed downlink packet access (HSPA) protocol. High-Speed ​​Downlink Packet Access (HSDPA) or High-Speed ​​Uplink Packet Access This may include High-Speed ​​Uplink Packet Access (HSUPA).

[0153] In one example, the base station 114a and the WTRUs 102a, 102b, and 102c may RRH118a, 118b, TRP119a, 1 in AN103b / 104b / 105b 19b or RSU120a, 120b and WTRU102c, 102d are evolved UM TS Terrestrial Radio Access (Evolved UMTS Terrestrial Radio Access: E-UTRA) Any radio technology may be implemented, including Long Term Evolution (LTE) and or LTE-Advanced (LTE-A) to communicate over the air interface. Establishing the base stations 115 / 116 / 117 or 115c / 116c / 117c respectively In the future, air interfaces 115 / 116 / 117 or 115c / 11 6c / 117c may implement 3GPP NR technology. LTE and LTE- A technologies are LTE D2D and V2X technologies (such as sidelink communications) and Internet Similarly, 3GPP NR technology may include other aspects (such as sidelink communications). ) May include NR V2X technology and interfaces.

[0154] A base station 114a and WTRUs 102a, 102b, and 102c and 102g, or RRH in RAN 103b / 104b / 105b 118a, 118b, TRP119a, 119b, and RSU120a, 120b, and WT RU102c, 102d, 102e, and 102f are IEEE802.16 (e.g., Worldwide Interoperability for Microwave Access ide Interoperability for Microwave Access (WiMAX)), CDMA200 0, CDMA2000 1X, CDMA2000 EV-DO, Interim Standard 2000 (Inte rim Standard 2000:IS-2000), Interim Standard 95 (IS-95), Interim Standard 85 6 (IS-856), Global System for Mobile Communications GSM (Registered Trademark), Enhanced Data Rate for GSM Data rates for GSM Evolution:EDGE), GSM EDGE(GSM EDGE:GE The wireless technology may be implemented using a wireless LAN.

[0155] The base station 114c in FIG. 27A includes a wireless router, a home Node B, a home eNode B, and a de B, or an access point, for example, a business establishment, a home, a vehicle, a train, Facilitating wireless connectivity within local areas such as aircraft, satellites, manufacturing plants, and campuses To achieve this, a video system using multi-TRP and multi-panel transmission as disclosed herein is Any suitable method for implementing the system fault detection and recovery method, system and device may be used. In one example, the base station 114c and the WTRU 102, e.g., the WTR U102e is a wireless local area network (WLAN) that implements wireless technologies such as IEEE802.11. A wireless local area network (WLAN) may be established. The base station 114c and the WTRU 102d implement wireless technology such as IEEE 802.15. Wireless Personal Area Network (WP) In yet another example, the base station 114c and the WTRU 102, e.g., The WTRU 102e is a cellular-based RAT (e.g., WCDMA, CDMA20 00, GSM, LTE, LTE-A, NR, etc.) to provide picocells or femtocells. As shown in FIG. 27A, the base station 114c may establish a Therefore, the base station 114c may have a direct connection to the core network 106. There may be no need to access the Internet 110 via / 107 / 109.

[0156] RAN103 / 104 / 105 or RAN103b / 104b / 105b are core networks. The core network may communicate with the Voice, Data, Messaging, Authorization and Authentication, Applications, or Voice Over -Voice over Internet Protocol (VoIP) service to one or more of the WTRUs 102a, 102b, 102c, and 102d. The network may be any type of network configured to Q106 / 107 / 109 are call control, billing services, and mobile location-based services. , prepaid calls, Internet connectivity, packet data network Provides network connectivity, Ethernet connectivity, video distribution, etc. or may implement high-level security features such as user authentication.

[0157] Although not shown in FIG. 27A, RAN103 / 104 / 105 or RAN103 b / 104b / 105b or core network 106 / 107 / 109 is RAN10 3 / 104 / 105 or RAN103b / 104b / 105b with the same RAT or different It will be appreciated that the RAN may communicate directly or indirectly with other RANs employing the same RAT. For example, RAN103 / 104 / 105 or RAN106 may utilize E-UTRA radio technology. In addition to being connected to RAN 103b / 104b / 105b, it also connects to the core network 106 / 107 / 109 also includes another RAN (not shown) that employs GSM or NR radio technology. may communicate with

[0158] The core network 106 / 107 / 109 also includes the WTRUs 102a, 102b, 10 2c, 102d, and 102e are connected to the PSTN 108, the Internet 110, or other networks. It may also function as a gateway for accessing the PSTN1 network. 08 is a line that provides Plain Old Telephone Service (POTS). The Internet 110 may include a line-switched telephone network. (Transmission Control Protocol: TCP), User Datagram Protocol (User Datagram Protocol (UDP), and the TCP / IP Internet Protocol suite Common communication protocols such as the Internet Protocol (IP) A global system of interconnected computer networks and devices that uses Network 112 may include systems owned or operated by other service providers. may include a wired or wireless communication network over which the network is operated. 112 may be used in any type of packet data network (e.g., IEEE 802.3 interface). RAN103 / 104 / 105 or RAN103b One or more that may employ the same RAT as / 104b / 105b or a different RAT It may include another core network that is connected to multiple RANs.

[0159] WTRUs 102a, 102b, 102c, 102d, and 102e in the communication system 100 Some or all of 102f and 102f may have multimode capabilities, e.g., W TRUs 102a, 102b, 102c, 102d, 102e, and 102f are defined herein. Beam fault detection using multi-TRP and multi-panel transmissions, as disclosed in To implement the recovery method, system and device, different A wireless network may include multiple transceivers communicating with different wireless networks. For example, in FIG. The WTRU 102g shown is a base station that may employ cellular-based wireless technology. 114a and to base station 114c, which may employ IEEE 802.11b wireless technology. may be configured to trust the

[0160] Although not shown in FIG. 27A, the user terminal may make a wired connection to the gateway. It is understood that the gateway is a residential gateway. l Gateway (RG). RG is a network 9. Much of the subject matter contained herein may be used in conjunction with WT This applies equally to UEs that are RUs and UEs that use a wired connection to the network. For example, it should be understood that the wireless interfaces 115, 116, and 11 The concepts that apply to 7 and 115c / 116c / 117c apply equally to wired connections. That's fine.

[0161] FIG. 27B illustrates a multi-TRP and multi-panel transmission system using the methods disclosed herein. Beam failure detection and recovery methods, systems, and devices may be implemented. 1 is a system diagram of an example of a RAN 103 and a core network 106. As noted above, The RAN 103 employs UTRA radio technology to communicate with the WT over the air interface 115. The RAN 103 may communicate with the RUs 102a, 102b, and 102c. As shown in FIG. 27B, the RAN 103 may communicate with the air interface. to communicate with the WTRUs 102a, 102b, and 102c through the interface 115. , Node-B 140a, 1, each of which may comprise one or more transceivers. Node-B 140a, 140b, and 140c. Each of the cells c may be associated with a particular cell (not shown) within the RAN 103. The RAN 103 may also include RNCs 142a, 142b. It is understood that this may include Node-Bs and Radio Network Controllers (RNCs). Let's do it.

[0162] As shown in FIG. 27B, Node-Bs 140a and 140b communicate with an RNC 142a. In addition, the Node-B 140c may communicate with the RNC 142b. The ode-B 140a, 140b and 140c communicate with each other via the Iub interface. The RNCs 142a and 142b may communicate with the corresponding RNCs 142a and 142b. RNC 142a and 142b may communicate with each other via the Iur interface. Each of the Node-Bs 140a, 140b and 42b is connected to a respective Node-B 140a, 140b and 42b. In addition, the RNCs 142a and 142b may be configured to control the These are outer loop power control, load control, admission control, packet scheduling, Other features such as handover control, macro diversity, security functions, and data encryption are also available. The device may be configured to perform or support a function.

[0163] The core network 106 shown in FIG. 27B includes a media gateway (MGW). ay (MGW) 144, Mobile Switching Center (MSC) 146, Serving GPRS Support Node (SGSN) 148 , or Gateway GPRS Support Node (GGS) Each of the above elements may be part of the core network 106. Although depicted as a set of components, any one of these components may be part of a core network operator. It will be understood that the information contained herein may be owned or operated by entities other than the Company.

[0164] RNC 142a in RAN 103 communicates with the core network via the IuCS interface. The MSC 146 may be connected to the MGW 144. The MSC 146 and the MGW 144 may WTRU 102a, WTRU 102c, and WTRU 102d provide access to a circuit-switched network such as the PSTN 108. Communications between 102b and 102c and conventional terrestrial communications devices may be facilitated.

[0165] RNC 142a in RAN 103 also communicates with the core network via the IuPS interface. The SGSN 148 may be connected to the GGSN 1 50. The SGSN 148 and the GGSN 150 may be connected to the WTRU 102a, 02b and 102c provide access to packet-switched networks such as the Internet 110. provides access between the WTRUs 102a, 102b, and 102c and IP-enabled devices This may facilitate communication between the parties.

[0166] The core network 106 may also be owned or operated by other service providers. other networks 112, which may include other wired or wireless networks It is okay to do so.

[0167] FIG. 27C illustrates a multi-TRP and multi-panel transmission system using the methods disclosed herein. Beam failure detection and recovery methods, systems, and devices may be implemented. 1 is a system diagram of an example of a RAN 104 and a core network 107. As noted above, The RAN 104 employs E-UTRA radio technology and transmits data over the air interface 116. The RAN 104 may communicate with the WTRUs 102a, 102b, and 102c. It may be in communication with a network 107 .

[0168] The RAN 104 may include eNode-Bs 160a, 160b, and 160c. However, it will be understood that the RAN 104 may include any number of eNode-Bs. The eNode-Bs 160a, 160b, and 160c each have an air interface. to communicate with WTRUs 102a, 102b, and 102c through network 116. For example, the eNode-Bs 160a, 160b, and The eNode-Bs 160a and 160c may implement MIMO technology. For example, the WTRU 102a transmits a wireless signal to the WTRU 102a and receives a wireless signal from the WTRU 102a. Multiple antennas may be used to receive the

[0169] Each of the eNode-Bs 160a, 160b, and 160c is connected to a particular cell (not shown). and radio resource management decisions, handover decisions, uplink Or it may be configured to handle user scheduling in the downlink, etc. As shown in FIG. 27C, eNode-Bs 160a, 160b, and 160c are connected to the X2 They may communicate with each other through an interface.

[0170] The core network 107 shown in FIG. 27C includes a mobility management gateway (Mobili Management Gateway (MME) 162, Serving Gateway 164, and Packet Data Network (PDN) Gateway 166 Each of the above elements may be depicted as part of the core network 107. However, any one of these elements may be operated by an entity other than the core network operator. It will be understood that the information contained herein may be owned or operated by an entity.

[0171] The MME 162 communicates with the eNode-B 1 in the RAN 104 via the S1 interface. 60a, 160b and 160c, and function as control nodes. For example, the MME 162 may Authenticating the user, bearer activation / deactivation, WTRU 102a, 102 b and 102c, selecting a specific serving gateway during the initial connection. The MME 162 may also be responsible for communicating with the RAN 104 and other mobile networks, such as GSM or WCDMA. A control program is required to switch between other RANs (not shown) employing any other radio technology. A lane function may be provided.

[0172] The serving gateway 164 communicates with the RAN 104 via the S1 interface. The service may be connected to each of the eNode-Bs 160a, 160b, and 160c. The gateway 164 generally provides a Routing and routing user data packets from TRUs 102a, 102b, and 102c The serving gateway 164 may also handle inter-eNode-B handovers. The user plane anchor between the WTRUs 102a, 102b and Triggering paging when available to the WTRUs 102a, 102c b and 102c may perform other functions such as managing and storing the context.

[0173] The serving gateway 164 also notifies the WTRUs 102a, 102b, and 102c provides access to packet-switched networks such as the Internet 110, and 02a, 102b, 102c and IP-enabled devices. It may be connected to a DN gateway 166.

[0174] The core network 107 may facilitate communication with other networks. The PSTN 107 provides the WTRUs 102a, 102b, and 102c with 8, and the WTRUs 102a, 102b, and 102c For example, the core network 1 may facilitate communication between the 07 acts as an interface between the core network 107 and the PSTN 108 IP gateways (e.g., IP Multimedia Subsystems) It may contain or communicate with a core network (IMS) server. The network 107 provides the WTRUs 102a, 102b, and 102c with the services of other service providers. network, which may include other wired or wireless networks owned or operated by the The network 112 may also be provided with access.

[0175] FIG. 27D illustrates a multi-TRP and multi-panel transmission system using the methods disclosed herein. Beam failure detection and recovery methods, systems, and devices may be implemented. 1 is a system diagram of an example of a RAN 105 and a core network 109. Employing NR radio technology, the WTRU 102a and 102b communicate over the air interface 117. 02b. The RAN 105 may also be in communication with the core network 109. Non-3GPP InterWorking Function (N3IWF) ) 199 employs non-3GPP wireless technology to communicate with the WT over the air interface 198 The N3IWF 199 may also communicate with the core network 109. You can believe it.

[0176] The RAN 105 may include gNode-Bs 180a and 180b. It will be appreciated that 5 may include any number of gNode-Bs. 180a and 180b each communicate with the WTRU 10 over the air interface 117. 2a and 102b. When integrated access and backhaul connectivity is used, the same air interface , a WTRU and a core network 109 via one or more gNBs. The gNode-Bs 180a and 180b may be used between the gNode-Bs. MIMO, MU-MIMO, or digital beamforming techniques may be implemented. Thus, the gNode-B 180a transmits a radio signal to the WTRU 102a, for example. and using multiple antennas to receive wireless signals from the WTRU 102a. The RAN 105 may employ other types of base stations, such as eNode-B. It should be understood that the RAN 105 may employ more than one type of base station. It will be appreciated that there may be cases where, for example, the RAN may have eNode-B and gNode- B may be adopted.

[0177] The N3IWF 199 may include a non-3GPP access point 180c. It is understood that the WF199 may include any number of non-3GPP access points. The non-3GPP access point 180c communicates with the WLAN over the air interface 198. It may include one or more transceivers for communicating with the TRU 102c. The access point 180c communicates over the air interface using the 802.11 protocol. The WTRU 102c may communicate with the WTRU 102c through a WTRU 198.

[0178] Each of the gNode-Bs 180a and 180b is associated with a particular cell (not shown). and radio resource management decisions, handover decisions, uplink or downlink It may be configured to handle scheduling of users on the link, etc. As shown in D, gNode-B 180a and 180b are connected to the Xn interface. They may communicate with each other through the

[0179] The core network 109 shown in FIG. 27D is a 5G core network. The core network 109 may be a wireless access network. A network may offer numerous communications services to its customers that are interconnected by a network. The Core Network 109 comprises several entities that perform the functions of the Core Network. As used herein, the term "core network entity" or "network" refers to a A "Network Function" is any entity that performs one or more functions of the Core Network. Such core network entities may be either radio or network 27G. A computer-executable program stored in the memory of a device and executing on a processor of the device. It is understood that it may be a logical entity implemented in the form of instructions (software). will be done.

[0180] In the example of FIG. 27D, the 5G core network 109 includes an access mobility management function (Ac cess and Mobility Management Function (AMF) 172, Session Management Function (S Session Management Function (SMF) 174, User Plane Function (User Plane F UPF 176a and 176b, User Data Management Function ement Function (UDM) 197, Authentication Server Function (AUthentication Server Function n:AUSF)190, Network Exposure Function NEF (on) 196, Policy Control Function (PCF) 184 ,Non-3GPP Interworking Function (N3IWF) 199, User Data Repository ( Each of the above elements may include a User Data Repository (UDR) 178. Although depicted as part of the 5G Core Network109, any of these elements One of these is owned or operated by an entity other than the core network operator. It will be understood that the 5G core network may consist of all of these elements. may not have any components, may consist of additional components, and multiples of each of these components may be used. It will be appreciated that each network function may be configured with multiple instances. Although shown in Figure 27D as directly connected to each other, they are through a routing agent such as a messaging agent or message bus. It should be understood that there may be cases where

[0181] In the example of Figure 27D, connectivity between network functions is achieved through interfaces or is realized through a set of reference points. Network functions are connected to other network functions. A module is a set of services that are started or called by a service. It will be understood that network function services may be modeled, described, or implemented in any manner. The service launch involves direct connections between network functions and messaging exchanges over a message bus. , can be realized through software function calls.

[0182] The AMF 172 may be connected to the RAN 105 via an N2 interface and may control For example, the AMF 172 may perform functions such as registration management, connection management, reachability management, and so on. AMF may be responsible for security management, access authentication, and access authorization. It is responsible for delivering user plane tunnel configuration information to the RAN 105 via the The AMF 172 receives the user plane data from the SMF via the N11 interface. The AMF 172 generally receives N1 interface configuration information. Routes NAS packets to / from WTRUs 102a, 102b, and 102c via The N1 interface is not shown in Figure 27D.

[0183] The SMF 174 may be connected to the AMF 172 via an N11 interface. Similarly, the SMF connects to the PCF184 via the N7 interface and to the PCF184 via the N4 interface. The SMF 174 may be connected to the UPFs 176a and 176b via a control node. For example, the SMF 174 may perform session management, IP address assignment for a, 102b and 102c, UPF176a and UP Management and configuration of rules guiding traffic in F176b and AMF172 It may also be responsible for generating downlink data notifications.

[0184] UPF176a and UPF176b are WTRU102a, 102b, and 102c 110, providing access to packet data networks (PDNs) such as the Internet. and facilitates communication between the WTRUs 102a, 102b, and 102c and other devices. The UPF 176a and the UPF 176b may also and 102c, providing access to other types of packet data networks. For example, the other network 112 may be an Ethernet network or a data It may be any type of network that exchanges packets. and UPF176b receive traffic from SMF174 via the N4 interface. UPF 176a and UPF 176b may receive rules that guide the N6 interface. By connecting a packet data network using a They connect with each other and with other UPFs using interfaces to form a packet data network. may provide access to a packet data network. In addition to providing the necessary security, the UPF176 also provides packet routing and forwarding, policy rule enforcement, and user Quality of service management for server-plane traffic, buffering of downlink packets It may also play a role in the

[0185] The AMF172 also connects to the N3IWF199 via the N2 interface, for example. The N3IWF may, for example, use a non-3GPP-defined air interface technology. facilitating connectivity between the WTRU 102c and the 5G core network 170 via AM F interacts with N3IWF199 in the same or similar manner as it interacts with RAN105. There may be interactions.

[0186] The PCF 184 may be connected to the SMF 174 via an N7 interface, and the N1 5 interface and can be connected to the AMF172 via the N5 interface Connected to Application Function (AF) 188 via The N15 and N5 interfaces are not shown in Figure 27D. 4 provides policy rules to control plane nodes such as AMF172 and SMF174 Each control plane node may then be able to enforce these rules. 84 instructs the AMF 172 to provide policies for the WTRUs 102a, 102b, and 102c. As a result, the AMF may transmit to the WTRU 102 via the N1 interface. a, 102b, and 102c. Then, the policy is May be enforced or applied in RUs 102a, 102b and 102c.

[0187] UDR178 serves as a repository for authentication credentials and subscription information. A UDR may connect to a network function, which may then ,It can add to, read from, and modify data in the repository. For example, UDR178 connects to PCF184 via N36 interface. Similarly, the UDR178 connects to the NEF196 via the N37 interface. and may be connected to the UDM197 via an N35 interface.

[0188] The UDM197 is the interface between the UDR178 and other network functions. The UDM 197 may function as a network For example, the UDM197 uses the N8 interface Connects to the AMF172 via the NI PXIe-4211 and to the SMF174 via the N10 interface. Similarly, the UDM197 can communicate with the AUSF190 via the N13 interface. The UDR178 and UDM197 may be tightly integrated. do.

[0189] AUSF190 performs authentication related operations and communicates with UD via the N13 interface. The M178 connects to the AMF172 via the N12 interface.

[0190] NEF196 is a framework for application-level capabilities and services within the 5G core network109. The application function (AF) 188 is exposed via the N33 API interface. The NEF is connected to the AF188 via the N33 interface. It may connect to other network functions and 9 capabilities and services.

[0191] The application function 188 is a network function within the 5G core network 109. The interaction between application functions188 and network functions Interaction is either through a direct interface or through the NEF196 The application function 188 may be implemented as a part of the 5G core network 109. may be considered part of the 5G core network or may be external to the 5G core network109 and deployed by companies that have business relationships with mobile network operators This may be the case.

[0192] Network slicing is the process of creating one or more networks behind the operator's air interface. by mobile network operators supporting multiple "virtual" core networks This is a mechanism that may be used to The core network is being restructured to support different service types operating across multiple Related to "slicing" into multiple virtual networks. Slicing can be used to separate different systems with diverse requirements in functionality, performance, and independence, for example. Customized to provide optimized solutions for different market scenarios This allows operators to create networks that are

[0193] 3GPP is adapting the 5G core network to support network slicing Network slicing is a technology that allows network operators to A diverse set of often demanding 5G use cases (e.g., large Supports large-scale IoT, critical communications, V2X, and advanced mobile broadband Network slicing is a good tool that can be used to Without the use of methods, each use case has its own unique set of performance, scalability, and availability requirements. With a set of may not be flexible and scalable enough to efficiently support new The deployment of network services must be made more efficient.

[0194] Referring again to FIG. 27D, in a network slicing scenario, the WTRU 102a , 102b or 102c connects to the AMF172 via the N1 interface. An AMF may be logically part of one or more slices. F is a WTRU 102a, 102b, or 102c and one or more UPFs 176a and 176b, SMF174, and other network functions. UPF176a and 176b, SMF174, and other Each of the network functions may be part of the same slice or a different slice. If they are part of different slices, they are different computing resources. They are separate from each other in that they may use a security certificate. There may be cases where this is the case.

[0195] The core network 109 may facilitate communication with other networks. The 5G core network 109 is an interface between the 5G core network 109 and the PSTN 108. IP Multimedia Subsystem (IMS) servers that act as interfaces It may contain or communicate with an IP gateway, e.g., a core network Q109 is a short message service that facilitates communication via short message service. The 5G mobile terminal may include or communicate with a SMS service center. The core network 109 includes the WTRUs 102a, 102b, and 102c and the servers or may facilitate the exchange of non-IP data packets between application functions 188. In addition, the core network 170 notifies the WTRUs 102a, 102b, and 102c , other wired or wireless networks owned or operated by other service providers The network 112 may provide access to the network 112, which may include a network.

[0196] 27A, 27C, 27D, or 27E. Core network entities are those entities in certain existing 3GPP specifications. Although the names given to these entities and Functions may be identified by other names, and certain entities or functions may be , in future specifications published by 3GPP, including future 3GPP NR specifications. It should be understood that these may be combined. 27C, 27D, or 27E. The properties and functions are provided by way of example only and the subject matter disclosed and claimed herein is , any similar, whether now defined or defined in the future. It should be appreciated that the present invention may be embodied or implemented in a communications system.

[0197] FIG. 27E illustrates a multi-TRP and multi-panel transmission system using the methods described herein. Systems, methods, and apparatus for implementing beam failure detection and recovery may be used in communications 1 illustrates an example of a system 111. The communication system 111 includes a wireless transmit / receive unit (WTRU). )A, B, C, D, E, F, base station gNB121, V2X server 124, and load server In fact, the present specification The concepts presented here can be applied to any number of WTRUs, base stations gNBs, V2X networks, or other may be applied to one, some or all of the WTRs. UA, B, C, D, E and F are outside the scope of access network coverage 131 Among WTRUs A, B, and C in a V2X group, WTRU A is It is the one that leads the loop, and WTRUs B and C are group members.

[0198] WTRUs A, B, C, D, E and F are the access network coverage 131, they communicate with each other through the Uu interface 129 via the gNB 121. In the example of FIG. 27E, WTRUs B and F may communicate with each other via the access network. WTRUs A, B, C, D, E, and F are shown in network coverage 131. A sidelink interface (such as interface 125a, 125b, or 128) For example, via PC5 or NR PC5, they are covered by the access network. whether it is under access network coverage 131 or outside access network coverage 131 For example, in the example of Figure 27E, WTRU D, which is outside work coverage 131, is a WTRU within coverage 131. Communicate with F.

[0199] WTRUs A, B, C, D, E and F are Vehicle-to-Network (V2N) 133 or the sidelink interface 125b, WTRUs A, B, C, D, E, and F may communicate with the vehicle trunk. V2X Server 1 via the V2I-Infrastructure Interface 127 WTRUs A, B, C, D, E and F may communicate with the vehicle May communicate with another UE via a person-to-person (V2P) interface 128 .

[0200] FIG. 27F is a cross-sectional view of FIG. 27A, FIG. 27B, FIG. 27C, FIG. 27D, or FIG. 27E, or 1 through 20. System and method for implementing beam fault detection and recovery using RP and multi-panel transmission Equipment or devices that may be configured for wireless communication and operation in accordance with the Act and 27F is a block diagram of an example of an exemplary WTRU 102. 02 includes a processor 118, a transceiver 120, a transmit / receive element 122, and a speaker / A microphone 124, a keypad 126, and a display / touchpad / indicator a memory 128, a non-removable memory 130, a removable memory 132, and a power supply 134. and Global Positioning System (GPS) chipset 136 and other peripherals 138. The WTRU 102 may include any subcomponents of the above elements. It is to be understood that the present invention may comprise any combination thereof, including, but not limited to, , Transceiver Base Station (BTS), Node-B, Site Controller, Access Point ( AP), home Node-B, evolved home Node-B Node-B), Home evolved Node-B (HeNB), Node-B gateway for next generation node-B (gN Node-B) and base stations 114a and 114b, such as proxy nodes, or base stations The nodes, which may refer to 114a and 114b, are the elements depicted in FIG. 27F. and the multi-TRP and multi-PA described herein. Implementing the disclosed system and method for beam failure detection and recovery using channel transmission This may be an example implementation.

[0201] The processor 118 may be a general-purpose processor, a special-purpose processor, a conventional processor, a digital Digital Signal Processor (DSP), multiple microprocessors one or more microprocessors associated with the DSP cores, a controller, Microcontrollers, Application Specific Integrated Circuits ASICs, Field Programmable Gate Arrays FPGA (Field Programmable Gate Array) circuits, any other type of integrated circuit (IC) C), a state machine, etc. The processor 118 may be a signal coding, a data processing processing, power control, input / output processing, or otherwise enabling the WTRU 102 to operate within the wireless environment. The processor 118 may also implement any other functionality that enables the transmit / receive element 12 2, which may be coupled to a transceiver 120. Although a processor 118 and a transceiver 120 are shown as components, 18 and transceiver 120 may be integrated together in an electronic package or chip. Please understand that.

[0202] The UE transmit / receive element 122 transmits the signal over the air interface 115 / 116 / 117. 27A), or air interface 115d. / 116d / 117d to transmit signals to or receive signals from other UEs. For example, the transmit / receive element 122 may be configured to transmit or receive an RF signal. The transmit / receive element 122 may be, for example, an antenna configured to receive the , an emitter / detector configured to transmit or receive IR, UV, or visible light signals The transmit / receive element 122 may be a receiver for transmitting and receiving both RF and optical signals. The transmit / receive element 122 may be configured to transmit any combination of wireless or wired signals. It will be appreciated that the device may be configured to transmit or receive a match.

[0203] Additionally, while the transmit / receive element 122 is depicted as a single element in FIG. The TRU 102 may include any number of transmit / receive elements 122. More specifically, the WT The RU 102 may employ MIMO technology. To transmit and receive wireless signals through the interfaces 115 / 116 / 117, It may include two or more transmit / receive elements 122 (eg, multiple antennas).

[0204] The transceiver 120 modulates the signal to be transmitted by the transmit / receive element 122. , and may be configured to demodulate signals received by the transmit / receive element 122. As noted above, the WTRU 102 may have multi-mode capabilities. The transceiver 120 may be configured to allow the WTRU 102 to support multiple RATs, e.g., NR and IEEE802. 2.11, or communicate via NR and E-UTRA, or different RRHs, T Allows communication with the same RAT via multiple beams to RPs, RSUs or nodes For this purpose, it may contain multiple transceivers.

[0205] The processor 118 of the WTRU 102 controls the speaker / microphone 124, the keypad 1 26, or Display / Touchpad / Indicator 128 (e.g., LCD display) Liquid Crystal Display (LCD) display device or organic light emitting diode (Organic Light-Emitting Diode: OLED) display device) and The processor 118 may also receive user input data from Speaker / microphone 124, keypad 126, or display / touchpad / input In addition, the processor 118 may output a non-removable memory The information can be read from any type of suitable memory, such as a removable memory 132 or a hard disk drive 130. The non-removable memory 130 may include a memory card, a USB flash drive ... , Random-Access Memory (RAM), Read-Only Memory (R Read-Only Memory (ROM), hard disk, or any other type of memory storage device The removable memory 132 may include a subscriber identity module (SIM). Subscriber Identity Module (SIM) cards, memory sticks, Secure Digital ( The processor 118 may be a cloud storage device, such as a Secure Digital (SD) memory card. a server hosted on a cloud or edge computing platform, or Not physically located on the WTRU 102, such as in a home computer (not shown) The processor 118 may access information in the memory and store data therein. In some examples described herein, beam obstruction using multi-TRP and multi-panel transmission is Depending on whether the damage detection and recovery setup was successful or unsuccessful, the display or controls the lighting pattern, image or color on the indicator 128 or Beam Fault Detection and Recovery Using TRP and Multi-Panel Transmission and Related The display or indicator may be configured to indicate the status of the component. The control of the lighting patterns, images or colors on the controller 128 may be implemented in accordance with the various figures shown or discussed herein. Any state of the method flow or component (e.g., Figures 1 to 25) Beam obstructions using multi-TRP and multi-panel transmissions Detection and recovery messages and procedures are disclosed herein. , an input source (e.g., a speaker / microphone 124, a keypad 126, or a display to request resources via the touch screen / touchpad / indicator 128) and, among other things, multi-TRP and multi-PA that may be displayed on display 128. Request, configure, or query beam fault detection and recovery related information using channel transmission To do this, messages and procedures are extended to provide an interface / API. You may do so.

[0206] The processor 118 may derive power from a power supply 134 and other components within the WTRU 102. The power supply 134 may be configured to distribute or control power to the components. The power supply 134 may be any suitable device that provides power to the TRU 102. For example, the power supply 134 may be It may include one or more dry batteries, solar cells, fuel cells, etc.

[0207] The processor 118 also generates location information (e.g., longitude, and latitude) to a GPS chipset 136. In addition to or instead of information from the GPS chipset 136, the WTR The U 102 communicates with a base station (e.g., a base stations 114a, 114b) or from two or more nearby base stations. It may determine its location based on the timing of the signals being received. It will be appreciated that the location information may be obtained by any suitable location method. There will be.

[0208] The processor 118 may also provide additional features, functionality, or wired or wireless connectivity. Contains one or more software or hardware modules that provide For example, the peripheral 138 may be coupled to other peripherals 138 that can various sensors such as a meter, biometric (e.g., fingerprint) sensor, e-compass, Star transmitter / receiver, digital camera (for photos or videos), Universal Serial Bus (Univ USB (Universal Serial Bus) port or other interconnection interface, vibration device TV receivers, hands-free headsets, Bluetooth (registered trademark) modules modules, Frequency Modulated (FM) radio units, digital music players Media players, video game player modules, internet browsers, etc. may include:

[0209] The WTRU102 is ideal for sensors, consumer electronics products, smart watches, or smart clothing. Wearable devices, medical or e-health devices, robots, industrial equipment, contained in any other apparatus or device, such as a motor vehicle, car, truck, train, or airplane The WTRU 102 may include one of the peripherals 138. This is accomplished via one or more interconnection interfaces, such as a connection interface. Connect to other components, modules, or systems of such equipment or devices You may do so.

[0210] Figure 27G shows the RAN 103 / 104 / 105, core network 106 / 107 / 10 9, PSTN 108, Internet 110, other networks 112, or networks 27A, 27B, 27C, 27D, 27E, 27F, 27G, 27H, 27I, 27J ... C, the communication network shown in Figs. 27D and 27E, and Figs. Multi-TRP and systems such as those shown in and described or claimed herein and beam fault detection and recovery using multi-panel transmission, implemented within one or more devices. 1 is a block diagram of an exemplary computing system 90 in which the present invention may be implemented. The computing system 90 may include a computer or server and may include software. by computer readable instructions, which may be in the form of software (such software being stored may be primarily controlled (regardless of where or how it is stored or accessed) Such computer-readable instructions may be used to operate the computing system 90. The processor 91 may be a general-purpose processor, a special-purpose processor, or the like. processors, conventional processors, digital signal processors (DSPs), and multiple microprocessors. processor, one or more microprocessors associated with a DSP core, controllers, microcontrollers, application specific integrated circuits (ASICs), field programs Programmable Gate Array (FPGA) circuits, any other type of integrated circuit (IC), state machine The processor 91 may be a processor for signal coding, data processing, power control, Input / output processing or computing system 90 operating within a communications network The coprocessor 81 may also implement any other functionality that allows the main processor 91 is an optional processor distinct from processor 91 that performs additional functions or or may assist the processor 91. The processor 91 or the coprocessor 81 ,Beam fault detection and recovery using multi-TRP and multi-panel transmissions. Receiving, generating and transmitting data related to the methods and apparatus described herein, e.g., RRC IEs and processing may be carried out.

[0211] In operation, the processor 91 fetches, decodes, and executes instructions to perform computing The information is transmitted to other resources via the system bus 80, which is the main data transfer path of the operating system. Such a system bus transfers data to and from other resources. Connects components within the operating system 90 and defines a medium for data exchange. The system bus 80 typically includes a data line for transmitting data, an address line, and Address lines for sending data, and interrupts and operating the system bus An example of such a system bus 80 is a PCI (Peripheral Computer Interface) Component Interconnect) bus.

[0212] The memories coupled to the system bus 80 include random access memory (RAM) 82 and and read-only memory (ROM) 93. Such memory is used for storing and reading information. ROM 93 generally cannot be easily modified. The data stored in RAM 82 may be used by processor 91 or other may be read or changed by other hardware devices. Access to the ROM 93 may be controlled by a memory controller 92. The controller 92 translates virtual addresses into physical addresses when instructions are executed. The memory controller 92 may also provide address translation functionality. Memory protection features that isolate processes and isolate system processes from user processes Therefore, a program running in the first mode may provide its own It may only access memory that is mapped by the process virtual address space. This means that the virtual address space of another process cannot be accessed unless memory sharing between processes is configured. You cannot access the memory inside.

[0213] In addition, the computing system 90 may transmit data from the processor 91 to a printer 94, a printer 95, a printer 96, a printer 97, a printer 98, a printer 99, a printer 100, a printer 101, a printer 102, a printer 103, a printer 104, a printer 105, a printer 106, a printer 107, a printer 108, a printer 109, a printer communicates commands to peripherals such as keyboard 84, mouse 95 and disk drive 85 It may also include a peripheral controller 83 that takes on the role of

[0214] The display 86 controlled by the display controller 96 is is used to display the visual output generated by the display system 90. Visual output includes text, graphics, animated graphics, and video. Visual output is a graphical user interface (GUI). The display 86 may be a CRT-based video display. Play, LCD-based flat panel displays, gas plasma-based flat panel displays It may be implemented as a panel display or touch panel. The controller 96 contains the electronic controls necessary to generate the video signal that is sent to the display 86. Includes components.

[0215] Furthermore, the computing system 90 may be configured as shown in FIG. RAN103 / 104 / 10 of Fig. 27A, Fig. 27B, Fig. 27C, Fig. 27D or Fig. 27E 5. Core network 106 / 107 / 109, PSTN 108, Internet 110 , the WTRU 102, or other networks 112 or connects to the device so that the computing system 90 can communicate with other may be used to enable communication with nodes or functional entities, For example, it may include communications circuitry such as a wireless or wired network adapter 97 . The communication circuitry, alone or in combination with the processor 91, may be any of the components described herein. for performing the transmitting and receiving steps of a device, node, or functional entity of the type May be used.

[0216] Any or all of the devices, systems, methods and processes described herein The program may be implemented as computer-executable instructions (e.g., programs) stored on a computer-readable storage medium. The instructions may be embodied in the form of a program code, which is transmitted to the processor 118 or 9. When executed by a processor, such as a processor 1, the processor is configured to implement the system described herein. It is understood that the present invention is not limited to the practice or implementation of the systems, methods, and processes described herein. Any step, act, or function described in the specification may be implemented by such a computer. and a device or apparatus configured for wireless or wired network communication, the device or apparatus being configured in the form of executable instructions. The computer-readable storage may be executed by a processor of a computing system. A medium is any non-transitory (e.g., tangible or physical) method or device for the storage of information. Volatile and non-volatile media, removable and non-removable media implemented in technology However, such computer-readable storage media do not include signals. The readable storage medium may be a RAM, a ROM, an EEPROM, a flash memory or other memory. Memory technology, CD-ROM, Digital Versatile Disk (DVD) ) or other optical disk storage devices, magnetic cassettes, magnetic tapes, magnetic disk storage devices device or other magnetic storage device, or Any other tangible material that can be accessed by a computing system or physical media, but are not limited to these.

[0217] As shown in each figure, beam obstruction detection and In describing the preferred methods, systems or apparatus of the disclosed subject matter for the purpose of clarity, For purposes of this application, specific terms are used. However, claimed subject matter does not necessarily conform to such selected specific terms. The term is not intended to be limiting and each specific element may serve a similar purpose. It is to be understood that the present invention includes all technical equivalents that operate in a similar manner to accomplish the present invention.

[0218] The various techniques described herein may be implemented in hardware, firmware, software, or both. Such hardware may also be implemented in conjunction with other hardware, or where appropriate, a combination of these. The hardware, firmware, and software are used by various nodes in a communication network. To carry out the methods described herein, the device may reside on a single device. They may operate independently or in conjunction with one another. "Network equipment," "node," "device," "network node," etc., have the same meaning. In addition, the word "or" is used inclusively unless otherwise specified. The term "best" as used herein generally refers to

[0219] This written description is provided to disclose the invention, including the best mode, and also to enable those skilled in the art to understand any device that may be used. or making and using the system to practice the invention, including performing any incorporated method. The patentable scope of the invention will be limited only by the claims. Other examples are defined by the scope of the claims and will occur to those skilled in the art (e.g., those disclosed herein). Omitting steps, combining steps, or adding steps between each exemplary method ) Such other examples may differ from the literal language of the claims. or have structural elements that are not present or that differ only slightly from the literal words of the claims. It is intended that equivalent structural elements with differences be within the scope of the claims. .

[0220] JPEG0007823263000073.jpg159170

[0221] JPEG0007823263000074.jpg80170

[0222] The methods, systems, and apparatus described herein are particularly suitable for beam fault detection (BFD). construct (detect) a first set of reference signals (RS) and a second set of RSs for the new beam Configure (detect) a third set of RS and a fourth set of RS for identifying the network and for bandwidth partitioning. The first set of radio link qualities of the RS when the BWP is active, or the A means can be provided for enforcing BFD based on a second set of radio link qualities. The methods, systems, and devices described herein are particularly useful for detecting a first set of RSs from a first TRP. and receiving a second RS of a second set of RSs from a second TRP. The radio link quality of the first set of RSs or the radio link quality of the second set of RSs can be provided. The wireless link quality can be measured by the received power of the reference signal (RSRP) or the received quality of the reference signal (Refere The first set of radio signals in the RS may be based on the received signal quality (RSRQ). The link quality may be from the first TRP and the second set of radio links of the RS. The ink quality is from the second TRP. In particular, the device receives radio link qualities of one or more RSs of the first set of RSs, and The radio link quality of a first threshold number of one or more RSs in the set is determined by a radio link quality threshold. Based on the fact that the radio link quality of the RSs in the first set of RSs is lower than the other A means can be provided to provide an indication of the layer. , may be provided by the physical layer. receive radio link qualities of one or more RSs in a first set of RSs and receive radio link qualities of one or more RSs in a second set of RSs; the radio link quality of a second threshold number of one or more RSs falls below the radio link quality threshold. and based on the received signal, the RSs in the second set of RSs are at least provided with a radio link quality indicator to indicate to other layers the radio link quality of the RSs in the second set of RSs. The methods, systems and methods described herein may provide a means for providing an indication of the presence of a target. The system and the device, in particular, receive a third RS of a third set of RSs from the first TRP, and A means for receiving a fourth RS of the fourth set of RSs from the second TRP may be provided. The methods, systems, and devices described herein are particularly directed to: Receive radio link quality and receive a fourth set of radio link quality for the RS from the second TRP. The methods, systems, and devices described herein can provide a means for , upon demand (e.g., in response to a request), of RSs reaching one or more thresholds. Based on the third set of radio link qualities or the fourth set of radio link qualities of the RS, a new The methods, systems, and methods described herein may provide a means for performing beam characterization. and the device, in particular, provides an indication of a beam failure of the first link (e.g., a third set Based on the NBI (based on the PHY), a new bit for the first link corresponding to the third set of RSs of the PHY is generated. It can provide a means by which the MAC layer can request the PHY layer to perform system identification. The beam failure recovery request is sent via the physical random access channel or the physical uplink control channel. The first set of signals may be received through a physical uplink shared channel or a physical uplink shared channel. If the higher layer determines that a beam is faulty based on the associated indication, the higher layer Similarly, the second set may be used to request a new beam identification based on the fourth set. All combinations (sequences) in this and the following paragraphs of the specification may be related to Any changes (including omission or addition of steps) shall be consistent with other parts of the detailed description. This can be considered in stages.

[0223] The methods, systems, and devices described herein are particularly useful for detecting the third TRP of an RS from a first TRP. A means for measuring the radio link quality of one or more RSs in the set may be provided. The methods, systems, and devices described herein are particularly directed to detecting the first TRP of an RS from a second TRP. It is possible to provide a means for measuring four sets of radio link quality. The method, system, and apparatus are particularly adapted to: It provides a means to perform new beam selection based on four sets of wireless link qualities. where the wireless link quality (e.g., the third or fourth set) is based on RSRP. The methods, systems, and devices described herein may, in particular, be used to identify one of the first set of RSs. evaluating the measured radio link quality of the plurality of RSs and determining whether one or more of the plurality of RSs in the first set of RSs are determining whether the measured radio link quality of the or a plurality of RSs is below a threshold, and An indication that the radio link quality of one or more RSs in the set is below a threshold. A means can be provided to provide the quality of the first set of radio links to another layer. The first set of RSs may be from a first TRP. The second set of RSs may be from a second TRP. There may be a first set of radio link qualities of the RS or a second set of radio link qualities of the RS. The quality may be based on a hypothetical block error rate. All combinations of the above (including omission or addition of steps) are included in the detailed description of the invention. This is considered in a manner consistent with other parts of the

Claims

1. 1. A wireless transmit / receive unit (WTRU), comprising: receiving configuration information from a network, the configuration information including a first Beam Failure Detection (BFD) Reference Signal (RS) resource set associated with a first Transmission / Reception Point (TRP) of a cell and a second BFD RS resource set associated with a second TRP of the cell, the first TRP and the second TRP being associated with the same cell; Detecting beam failure of a first TRP of the cell based on measurements associated with the first BFD RS resource set that are below a threshold; sending a report to the network, the report including an indication of a beam failure of the first TRP of the cell and an indication of a selected candidate beam RS to use for beam failure recovery (BFR); 12. A WTRU comprising: a processor configured to execute:

2. The processor further comprises: receiving configuration information including an indication of a first candidate beam RS set for BFR for a first TRP of the cell and an indication of a second candidate beam RS set for BFR for a second TRP of the cell; configured to select the candidate beam RS to be used for BFR from the first candidate beam RS set for BFR for a first TRP of the cell; The WTRU of claim 1 .

3. The WTRU of claim 2, wherein the processor is configured to select the candidate beam RS for the first TRP from the first candidate beam RS set indicated for the first TRP of the cell based on a measurement value, and the candidate beam RS has the largest measurement value among the candidate beam RSs in the first candidate beam RS set.

4. The WTRU of claim 1 , wherein the indication of the selected candidate beam RS to use for BFR includes an identifier of the selected candidate beam RS to use for BFR.

5. The WTRU of claim 1 , wherein the report further includes an indication of the cell associated with a beam failure of the first TRP.

6. The WTRU of claim 1 , wherein the indication of a beam failure of a first TRP of the cell includes an identifier indicating the first TRP.

7. The WTRU of claim 1 , wherein the indication of beam failure of a first TRP of the cell includes an identifier associated with the first BFD RS resource set associated with the first TRP of the cell.

8. The processor: configured to detect beam failure of a second TRP of the cell based on a measurement value associated with the second BFD RS resource set being below a threshold; The report includes an indication of a beam failure of a second TRP of the cell and an indication of a second selected candidate beam RS to use for beam forwarding. The WTRU of claim 1 .

9. 1. A method performed by a wireless transmit / receive unit (WTRU), comprising: receiving configuration information from a network, the configuration information including a first Beam Failure Detection (BFD) Reference Signal (RS) resource set associated with a first Transmission / Reception Point (TRP) of a cell and a second BFD RS resource set associated with a second TRP of the cell, the first TRP and the second TRP being associated with the same cell; Detecting beam failure of a first TRP of the cell based on measurements associated with the first BFD RS resource set that are below a threshold; sending a report to the network, the report including an indication of a beam failure of the first TRP of the cell and an indication of a selected candidate beam RS to use for beam failure recovery (BFR); A method comprising:

10. The method further comprises: receiving configuration information including an indication of a first candidate beam RS set for BFR for a first TRP of the cell and an indication of a second candidate beam RS set for BFR for a second TRP of the cell; Selecting the candidate beam RS to be used for BFR from the first candidate beam RS set for BFR for a first TRP of the cell; 10. The method of claim 9, comprising:

11. The method of claim 10, further comprising: selecting the candidate beam RS for the first TRP from the first candidate beam RS set indicated for the first TRP of the cell based on measurements, the candidate beam RS having the largest measurement value among the candidate beam RSs in the first candidate beam RS set.

12. The method of claim 9 , wherein the indication of the selected candidate beam RS to use for BFR includes an identifier of the selected candidate beam RS to use for BFR.

13. The method of claim 9 , wherein the report further includes an indication of the cell associated with a beam failure of the first TRP.

14. The indication of a beam failure of a first TRP of the cell includes an identification indicating the first TRP. The method of claim 9, further comprising:

15. The method of claim 9 , wherein the indication of beam failure of the first TRP of the cell includes an identifier associated with the first BFD RS resource set associated with the first TRP of the cell.

16. The method comprises: detecting beam failure of a second TRP of the cell based on a measurement value associated with the second BFD RS resource set being below a threshold; The report includes an indication of a beam failure of a second TRP of the cell and an indication of a second selected candidate beam RS to use for beam forwarding.

10. The method of claim 9.

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