Abstract: A method for SCell BFR performed by a UE is provided. The method includes: receiving a first SCell BFR configuration corresponding to a first SCell, the first SCell BFR configuration including at least one of a resource list for BFD and a resource list for NBI; detecting a beam failure condition in the first SCell by measuring at least one BFD reference signal; determining a first new candidate beam index for the first SCell based on the first SCell BFR configuration; and transmitting a beam failure recovery request that includes a cell index of the first SCell in which beam failure occurs and the determined first new candidate beam index.

Abstract: A method performed by a User Equipment (UE) is provided. The method includes performing at least one Beam Failure Recovery (BFR) procedure. The at least one BFR procedure includes transmitting a Medium Access Control (MAC) Control Element (CE) for BFR to a base station, where the MAC CE for BFR includes a cell information field indicating information of a serving cell in which the BFR procedure is triggered, and a presence indicator field indicating whether an identity of a preferred Reference Signal (RS) for BFR is included in the MAC CE for BFR. The preferred RS is associated with the serving cell.

Abstract: A method for SCell BFR performed by a UE is provided. The method includes: transmitting, to a base station, a BFR MAC CE that includes a cell index of an SCell in which beam failure occurs and a new candidate beam index for the SCell, the transmission of the BFR MAC CE associated with a HARQ process having a HARQ process ID; and receiving, from the base station, a first DCI format that schedules a first PUSCH transmission with the HARQ process ID, the first DCI format indicating a toggled NDI value.

Abstract: A method of default uplink beam determination after a beam failure recovery (BFR) procedure in a beamforming system is proposed. For uplink (UL) transmission, the BS provides physical uplink control channel (PUCCH) resource configuration to UE. The configuration includes spatial relation information that indicates the spatial filter to be used by UE for the corresponding PUCCCH transmission. After BFR procedure is completed and before the first spatial relation information indication for a PUCCH resource is received by UE, a default UE TX beam for the PUCCH resource can be determined based on the UE TX beam used during the BFR procedure, e.g., the UE TX beam used to transmit a beam failure recovery request (BFRQ) during the BFR procedure.

Abstract: A User Equipment (UE) including a wireless transceiver and a controller is provided. The wireless transceiver performs wireless transmission and reception to and from a cellular station. The controller uses one or more first preambles within a PRACH time-frequency resource to perform a synchronous transmission on the PRACH to the cellular station via the wireless transceiver, or uses one or more second preambles within the PRACH time-frequency resource to perform an asynchronous transmission or a synchronous transmission on the PRACH to the cellular station via the wireless transceiver.

Abstract: A User Equipment (UE) including a wireless transceiver and a controller is provided. The wireless transceiver performs wireless transmission and reception to and from a cellular station. The controller selects a downlink reference signal associated with a candidate beam among a plurality of downlink reference signals including Channel State Information-Reference Signal (CSI-RS) resources, Synchronization Signal (SS) blocks, or Physical Broadcast Channel (PBCH) blocks, and determines one from a plurality sets of Physical Random Access Channel (PRACH) preambles and RACH occasions for the selected downlink reference signal according to an association configured between the downlink reference signals and PRACH resources. Also, the controller uses the determined set of PRACH preamble and RACH occasion to perform a PRACH transmission to the cellular station via the wireless transceiver.

Abstract: A method of supporting group communication over LTE MBMS is provided. A UE first establishes a unicast bearer in a network for group communication. The UE belongs to a communication group having a communication group ID. The UE receives access information from the network for monitoring downlink (DL) multicast traffic of the DL group communication based on a multicast decision. The UE is then ready for monitoring a multicast Multimedia Broadcast Multicast Service (MBMS) bearer for receiving the DL multicast traffic. In one embodiment, The UE requests to switch the DL multicast traffic from the multicast MBMS bearer to the unicast bearer upon detecting that the UE is approaching an MBMS coverage boundary. In another embodiment, the UE transmits an indication of preferred target cells to the network before performing a handover and thereby maintaining multicast service continuity of the group communication.

Abstract: Apparatus and methods are provided for RLM and RLF procedure in a wireless network. In one novel aspect, the UE generates radio link monitoring (RLM) measurement results for multiple physical downlink control channels (PDCCHs), groups the PDCCHs to multiple RLM groups based on a grouping rule to generate link status for each RLM group based on a RLM group status rule, wherein each RLM group contains one or more PDCCHs and belongs to a critical type or a non-critical type based on the one or more PDCCH types in the group and initiates a radio resource control (RRC) connection re-establishment procedure if the link status of a critical type of RLM group indicates link failure, otherwise, generates a radio link failure (RLF) report to the wireless network if the link status of a non-critical type of RLM group indicates link failure.

Abstract: A method of beam failure recovery request (BFRQ) transmission is proposed. In a first step of beam failure detection, UE detects a beam failure condition of the original serving beam. In a second step of new candidate beam identification, UE performs measurements for candidate beam selection. In a third step of beam failure recovery request (BFRQ) transmission, UE transmits a BFRQ message to BS upon the triggering condition for BFRQ transmission is satisfied. In a fourth step of monitoring BS response, UE monitors BS response to decide the success or failure of the BFRQ transmission attempt. In one advantageous aspect, the BFRQ transmission is over dedicated contention-free PRACH or PUCCH resources or over contention-based PRACH resources. Furthermore, a beam failure recovery timer is used to oversee the initiation and the termination of the BFRQ transmission.

Abstract: In one novel aspect, configurations for PDCCH transmission and reception with multiple transmission points are provided. The UE configures a PDCCH associated with a CORSET comprising multiple CCEs, partitions the CORSET into multiple TCI-state sets, wherein each TCI state set includes multiple CCE groups associated with corresponding TCI-state, which corresponds to a source TRP, activates one TCI state set, and receives DCI via the PDCCH, wherein the PDCCH is transmitted from at least the first source TRP and the second source TRP, and wherein each source TRP transmits corresponding portion of DCI data mapping to the corresponding first and second CCE group. The CORSET is partitioned in FDM or TDM way. In another novel aspect, a first and a second PDCCH associated with a first and a second TRP are configured for repetition transmission. The second PDCCH configuration is dependent upon the first PDCCH configuration.

Abstract: Apparatus and methods are provided to handle the intermittent disconnections in an mmW system. In one novel aspect, the beam tracking failure is determined upon detection of one or more tracking failure conditions. In one embodiment, the UE further considers potential recoveries to avoid frequent triggering of the beam-tracking failure condition. In another novel aspect, the UE performs one or more recovery procedures based on one or more recovery conditions. In one embodiment, the UE performs the initial alignment procedure to recover the connection. In another embodiment, the UE performs the beam-switching request procedure before triggers the initial alignment procedure. In one embodiment, timers are used to supervise the recovery procedures. In another embodiment, macro-assisted procedures are used for the beam-switching request procedure. In yet another novel aspect, the UE performs reestablishment of a new connection at the upper layer upon receiving the beam-tracking failure indicator.

Abstract: The present disclosure provides an embodiment of a reflective mask that includes a substrate; a reflective multilayer disposed on the substrate; an anti-oxidation barrier layer disposed on the reflective multilayer and the anti-oxidation barrier layer is in amorphous structure with an average interatomic distance less than an oxygen diameter; and an absorber layer disposed on the anti-oxidation barrier layer and patterned according to an integrated circuit layout.

Abstract: A data management system verifies the accuracy of data retrieved from a primary data store using a checksum tree stored by a secondary data store. A checksum tree is a tree graph that represents a hierarchy of checksums. Leaf nodes of the checksum tree can store checksums for data blocks stored by the primary data store and secondary data store, and parent nodes can represent checksums of their respective child nodes. The data management system can compare reference subtrees within the checksum tree to comparison subtrees that are generated from data retrieved from the primary data store to determine whether the retrieved data is accurate. The data management system can also use the checksum tree to identify which, if any, of the retrieved data blocks are inaccurate.

Abstract: Aspects of the disclosure provide a user equipment (UE). The UE receives configuration information of one or more sounding reference signal (SRS) resource sets. Each of the one or more SRS resource sets includes one or more SRS resources. The UE receives an SRS resource indicator (SRI). The SRI includes multiple bits to select a subset of the one or more SRS resources included in the one or more configured SRS resource sets. The UE determines a spatial quasi co-located (QCL) assumption for a physical uplink shared channel (PUSCH) transmission according to the selected subset of SRS resources.

Abstract: Aspects of the disclosure provide a user equipment (UE). The UE receives configuration information of multiple transmission configuration indication (TCI) states. The UE receives one or more activation commands that associate a first subset of the TCI states with one or more codepoints of a TCI field and a second subset of the TCI states with the one or more codepoints of the TCI field. The UE receives a codepoint associated with a first TCI state in the first subset of the TCI states and a second TCI state in the second subset of the TCI states. The UE determines at least one first quasi co-located (QCL) assumption according to the first TCI state and at least one second QCL assumption according to the second TCI state. The UE receives a downlink transmission based on the at least one first QCL assumption and the at least one second QCL assumption.

Abstract: Aspects of the disclosure provide an electronic device including a transceiver and processing circuitry. The transceiver can be configured to wirelessly receive at least one signal from a network including a first cell. The at least one signal can indicate a link quality of a wireless link formed between the electronic device and the base station in a first cell. The processing circuitry can be configured to determine whether beam failure occurs on the first cell based on at least one signal quality of the at least one signal. When the beam failure is determined to occur on the first cell, the processing circuitry can be configured to report information of the first cell to the network indicating the beam failure on the first cell.

Abstract: The present disclosure provides a lithography system. The lithography system includes an exposing module configured to perform a lithography exposing process using a mask secured on a mask stage; and a cleaning module integrated in the exposing module and designed to clean at least one of the mask and the mask stage using an attraction mechanism.

Abstract: Aspects of the disclosure provide a method of beam failure handling. The method can include performing beam quality measurement of one or more beams transmitted from a base station (BS) at a user equipment (UE) in a beamformed wireless communication system, determining a beam failure occurs based on the beam quality measurement, and performing a beam recovery process that includes at least one of a contention-free beam recovery process or a contention-based beam recovery process. The one or more beams are used for transmitting physical downlink control channels (PDCCHs).

Abstract: A method of default Quasi-Co-Location (QCL) assumption for Physical Downlink Shared Channel (PDSCH) reception in NR network is proposed. When PDSCH is scheduled by a DCI over PDCCH after a Scheduling Offset, the spatial RX filter for the PDSCH reception can be determined according to a QCL indication conveyed by the DCI. When the Scheduling Offset for PDSCH reception scheduled by DCI is less than a time duration, then a default QCL assumption is applied. UE assumes that the DMRS ports of PDSCH of a serving cell are QCLed with the RS(s) with respect to QCL parameter(s) used for PDCCH QCL indication of a CORESET. The CORESET is associated with a UE-monitored search space in the latest slot with the lowest CORESET-IF on an active BWP on the serving cell.

Abstract: An electronic device (110) includes a transceiver (130) and processing circuitry (150). The transceiver (130) can wirelessly receive a first (121) and a second signal (122 or 123) from an interface node (120) of a network work (101). The first signal (121) carries control information associated with a wireless link (105) between the electronic device (110) and the interface node (120). The processing circuitry (150) can obtain a first and a second signal quality of the first (121) and second signal (122 or 123) at a first protocol layer (PHY) in a protocol stack, respectively. At a second protocol layer (MAC), the processing circuitry (150) can determine whether the first signal (121) satisfies a beam failure criterion based on the first signal quality, and identify the second signal (122 or 123) as a candidate beam when the second signal (122 or 123) satisfies a candidate beam criterion based on the second signal quality.