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公开(公告)号：US11405972B2
公开(公告)日：2022-08-02
申请号：US16425146
申请日：2019-05-29
摘要： Methods, systems, and devices for wireless communications are described. One example method for wireless communications at a user equipment (UE) includes detecting a radio link failure (RLF) condition for a connection between the UE and a network over a first cell group and determining, in response to detecting the RLF condition, whether an air interface resource allocation is available for a signaling radio bearer (SRB) between the UE and the network over another cell group. The method also includes selecting, based at least in part on the determination, one of a plurality of RLF procedures. In some examples, the UE may select a first RLF procedure that fully releases radio resources when no SRB is available and a different, second RLF procedure that partially when an SRB is available between the UE and the network over a second cell group.
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公开(公告)号：US11330653B2
公开(公告)日：2022-05-10
申请号：US16440220
申请日：2019-06-13
摘要： Methods, systems, and devices for wireless communications are described. A wireless communications system may support multi-connectivity for a user equipment (UE) with multiple distributed units (DUs) under one central unit (CU), the DUs and the CU belonging to a base station. The UE may establish radio resource control (RRC) connections with multiple cell groups corresponding to multiple DUs under the CU. The UE may transmit measurement reports that provide measurement information for cells in proximity to the UE. The UE may maintain a set of active cell groups and a set of inactive cell groups. In some cases, one or more cell groups may be identified as controlling cell groups used to transmit control information. In some examples, the UE may replicate an uplink packets and transmit the uplink packet and replicates on multiple cell groups. In some cases, the UE may aggregate an uplink transmission among multiple cell groups.
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公开(公告)号：US11184870B2
公开(公告)日：2021-11-23
申请号：US16735514
申请日：2020-01-06
发明人： Joseph Binamira Soriaga , Tingfang Ji , Yichao Huang , Naga Bhushan , Keiichi Kubota , Gavin Bernard Horn
摘要： Discovery and synchronization channels are discussed for user-tracking zones in a cellular network. User-tracking zones reduce the mobility tracking burden on the UE and shift the tracking responsibility to the network. This shift allows for UE and network power savings from reduced searching at the UE as well as through efficient paging area tracking and less broadcast signaling. The various aspects provide channel design for initial synchronization and discovery of the user-tracking zones. A single frequency network (SFN) synchronization channel is provided with at least a reference signal for time synchronization and payload information that may include a zone identifier (ID), formatting for a system information transmission request, and resource allocation for the request. The zone ID may be included in the payload or embedded into the reference signal. Facility is also provided for handling zone nodes of different power classes that allows for maintaining the SFN operations.
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公开(公告)号：US11147093B2
公开(公告)日：2021-10-12
申请号：US16453573
申请日：2019-06-26
发明人： Ozcan Ozturk , Heechoon Lee , Keiichi Kubota
摘要： Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive a system information (SI) message in an overlapped scheduling window; and identify the SI message based at least in part on at least one of: downlink control information (DCI) for the SI message, a system information radio network temporary identifier (SI-RNTI) of the SI message, a time location of the SI message in the overlapped scheduling window, a search space for the DCI, or a combination thereof. Numerous other aspects are provided.
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公开(公告)号：US20210274409A1
公开(公告)日：2021-09-02
申请号：US17327272
申请日：2021-05-21
发明人： Keiichi Kubota , Gavin Bernard Horn , Tingfang Ji , Joseph Binamira Soriaga , Kambiz Azarian Yazdi , Saurabha Rangrao Tavildar
摘要： Techniques are described for wireless communication. A method for wireless communication at a user equipment (UE) includes identifying, while the UE is in a connected mode with a network, a radio resource configuration of the UE, selecting a dedicated set of resources for the UE or a common set of resources for a plurality of UEs based at least in part on the identified radio resource configuration, and transmitting a pilot signal to the network using the selected set of resources. Methods for wireless communication at a network access device and a network access device controller are also described.
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公开(公告)号：US11032783B2
公开(公告)日：2021-06-08
申请号：US16058330
申请日：2018-08-08
发明人： Keiichi Kubota , Gavin Bernard Horn
摘要： Methods, systems, and devices for wireless communication are described. A per-frequency indication providing deployment options for communication with a core network may be used for enhanced cell selection by a user equipment (UE). For example, system information transmitted by a base station may provide information elements that indicate, per radio frequency (or per radio frequency (RF) spectrum band)), deployment options associated with nearby cells. In such cases, the UE may determine whether to access the radio frequencies or RF bands of these cells based on the capabilities of the UE. In some cases, the UE may further determine whether the nearby cells are available based on the availability of a service through those cells. Accordingly, the UE may select one of the radio frequencies or bands corresponding to the cell having a network connectivity configuration that supports the UE's capabilities.
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公开(公告)号：US11006342B2
公开(公告)日：2021-05-11
申请号：US16188231
申请日：2018-11-12
IPC分类号： H04W36/30 , H04B7/022 , H04B7/0413 , H04B7/0417 , H04B7/0452 , H04B7/06 , H04B7/185 , H04W36/00 , H04W36/08 , H04W36/18
摘要： Methods, systems, and devices for wireless communications are described that provide a handover may be performed based on one or more conditions at a UE and in conjunction with a handover procedure from a source base station to a target base station. The one or more conditions at the UE may be associated with successful establishment or maintenance of the second connection. In some cases, the one or more conditions at the UE may correspond to one or more measurements associated with the source base station, the target base station, one or more neighboring base stations, or any combinations thereof.
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88.发明授权公开(公告)号：US10993181B2
公开(公告)日：2021-04-27
申请号：US16058287
申请日：2018-08-08
发明人： Linhai He , Ozcan Ozturk , Gavin Bernard Horn , Keiichi Kubota
摘要： Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a first base station for wireless communication, associated with a first radio access technology (RAT), may generate a message to cause a user equipment to wake up from a power saving state or to reconfigure a cycle associated with the power saving state, wherein the message includes an indication that the user equipment is to wake up from the power saving state or to reconfigure the cycle; and/or transmit the message toward the user equipment via a second base station, associated with a second RAT and the user equipment, to cause the user equipment to wake up from the power saving state or reconfigure the cycle. Numerous other aspects are provided.
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公开(公告)号：US20200154330A1
公开(公告)日：2020-05-14
申请号：US16188243
申请日：2018-11-12
摘要： Methods, systems, and devices for wireless communications are described that provide a handover may be performed based on one or more conditions at a UE and in conjunction with a handover procedure from a source base station to a target base station. The one or more conditions at the UE may be associated with successful establishment or maintenance of the second connection. In some cases, the one or more conditions at the UE may correspond to one or more measurements associated with the source base station, the target base station, one or more neighboring base stations, or any combinations thereof.
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公开(公告)号：US10568161B2
公开(公告)日：2020-02-18
申请号：US15719492
申请日：2017-09-28
摘要： Aspects of the present disclosure provide methods and apparatus for improving UL-based mobility. As described herein, a UE may determine it has failed to decode a first keep alive (KA) signal during a wake period of a discontinuous receive (DRx) cycle and may extend the wake period to monitor for a second KA signal, in response to the determination. An access network controller may select, while a (UE) is currently served by a first transmit/receive point (TRP), a second TRP to serve the UE, configure the first TRP to transmit a first keep alive (KA) signal, in response to a chirp signal received from the UE, and configure the second TRP to transmit a second KA signal after the first KA signal transmitted by the first TRP.
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