公开(公告)号：US20160014642A1

公开(公告)日：2016-01-14

申请号：US14790041

申请日：2015-07-02

Applicant: Apple Inc.

Inventor： Huarui Liang ,  Zhiwei Wang ,  David Boettger ,  Dawei Zhang ,  Farouk Belghoul ,  Krisztian Kiss

IPC: H04W36/00

CPC classification number: H04W36/0022 ,  H04W36/14

Abstract: Performing a circuit-switched fallback (CSFB) call with improved reliability. A request to establish a CSFB call may be received by a UE that is currently in a pool overlap area. The network resource controller, or the base station, transmits information to the UE which indicates the pools in which neighboring cells are operating. The UE uses this information to select a circuit-switched cell on which to operate for the CSFB operation, wherein the selected CS cell is in the same pool area as the current pool area. This prevents the UE from inadvertently camping on a CS cell in a different pool area, which could cause call failure on some networks. The information provided by the base station may comprise a pool area id, or may comprise mapping relation information that is useable by the UE to determine the current pool area.

Abstract translation: 执行电路交换后备（CSFB）呼叫，提高可靠性。 建立CSFB呼叫的请求可以由当前在池重叠区域中的UE接收。 网络资源控制器或基站向UE发送指示相邻小区正在操作的池的信息。 UE使用该信息来选择用于CSFB操作的电路交换小区，其中所选择的CS小区与当前池区域在同一池区域中。 这样可以防止UE在不同池区域的CS小区上无意中驻留，这可能导致某些网络的呼叫失败。 由基站提供的信息可以包括池区域id，或者可以包括由UE可用来确定当前池区域的映射关系信息。

公开(公告)号：US20160007240A1

公开(公告)日：2016-01-07

申请号：US14791687

申请日：2015-07-06

Applicant: Apple Inc.

Inventor： Farouk Belghoul ,  David Boettger ,  Krisztian Kiss ,  Dawei Zhang ,  Tarik Tabet ,  Rafael L. Rivera-Barreto ,  Huarui Liang

IPC: H04W36/00 ,  H04W48/16 ,  H04W36/14 ,  H04W76/04

CPC classification number: H04W36/0022 ,  H04W36/0083 ,  H04W36/14 ,  H04W48/16 ,  H04W48/18 ,  H04W76/27 ,  H04W88/06

Abstract: Mobile devices, base stations, and/or relay stations may implement CSFB (circuit switched fallback) operations by using RRC (radio resource control) connection release and/or handover procedures. If the CSFB RAT (radio access technology) target is not well configured, the UE may be informed and provisioned by the NW during a CSFB procedure with the information to return to LTE. Having this information, the UE may perform an autonomous search of LTE cells after the CSFB call release, speeding up return to LTE. To minimize potential call failures during CSFB, the UE may autonomously perform an additional cell search, in particular a search for cells on a RAT different from the initial target RAT. This creates an opportunity to prevent call failure of CSFB calls that would otherwise fail. The UE may be provisioned during the CSFB procedure with information to perform the additional cell search, should such a search be necessary.

Abstract translation: 移动设备，基站和/或中继站可以通过使用RRC（无线电资源控制）连接释放和/或切换过程来实现CSFB（电路交换回退）操作。 如果CSFB RAT（无线电接入技术）目标没有被很好地配置，则在CSFB过程期间可以通过NW向UE通知和提供UE返回到LTE的信息。 具有这种信息，UE可以在CSFB呼叫释放之后执行LTE小区的自主搜索，加速返回到LTE。 为了最小化CSFB期间的潜在呼叫失败，UE可以自主地执行附加小区搜索，特别是搜索与初始目标RAT不同的RAT上的小区。 这将创造一个机会来防止否则会失败的CSFB呼叫的呼叫失败。 如果需要这样的搜索，则可以在CSFB过程期间为UE提供执行附加小区搜索的信息。

公开(公告)号：US20150222414A1

公开(公告)日：2015-08-06

申请号：US14496949

申请日：2014-09-25

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Farouk Belghoul ,  S. Aon Mujtaba ,  Dawei Zhang

IPC: H04L7/00 ,  H04L12/26

Abstract: This disclosure relates to using a dedicated reference subframes in a cellular communication system. According to one embodiment, a base station may transmit reference signals in a dedicated synchronization and measurement reference subframe. Neighboring base stations may also transmit reference signals in dedicated reference subframes in a temporally coordinated (synchronized) manner. The reference signals transmitted be each base station may be orthogonal with the reference signals transmitted by each neighboring base station. The reference subframes may be transmitted periodically, and data subframes may be transmitted between reference subframes. Some or all of the data subframes may not include cell-specific reference symbols, as their function may be unnecessary given the use of the dedicated reference subframes.

Abstract translation: 本公开涉及在蜂窝通信系统中使用专用参考子帧。 根据一个实施例，基站可以在专用同步和测量参考子帧中发送参考信号。 相邻基站还可以以时间协调（同步）的方式在专用参考子帧中发送参考信号。 每个基站发送的参考信号可以与每个相邻基站发送的参考信号正交。 可以周期性地发送参考子帧，并且可以在参考子帧之间传送数据子帧。 数据子帧中的一些或全部可能不包括小区特定的参考符号，因为在使用专用参考子帧的情况下，它们的功能可能是不必要的。

公开(公告)号：US20150156695A1

公开(公告)日：2015-06-04

申请号：US14503269

申请日：2014-09-30

Applicant: APPLE INC.

Inventor： Dawei Zhang ,  Tarik Tabet

IPC: H04W36/30 ,  H04W24/08

CPC classification number: H04W36/30 ,  H04L5/001 ,  H04L5/006 ,  H04L5/0098 ,  H04W24/08 ,  H04W24/10 ,  H04W36/38 ,  H04W72/0426 ,  H04W72/085 ,  H04W84/042

Abstract: A system and methods that are performed by a macro cell and a user equipment (UE) to implement a carrier aggregation mode in a network. The system includes a macrocell including a first coverage area and a plurality of small cells, each of the small cells including a second coverage area wherein the plurality of second coverage areas substantially cover the first coverage area. The macro cell operates a first component carrier as a primary component carrier in a carrier aggregation enabled network and one of the small cells operates a second component carrier as a secondary component carrier in the carrier aggregation enabled network.

Abstract translation: 由宏小区和用户设备（UE）在网络中实现载波聚合模式执行的系统和方法。 该系统包括包括第一覆盖区域和多个小小区的宏小区，每个小小区包括第二覆盖区域，其中多个第二覆盖区域基本上覆盖第一覆盖区域。 宏小区在支持载波聚合的网络中操作第一分量载波作为主要分量载波，并且小型小区中的一个在支持载波聚合的网络中操作第二分量载波作为次分量载波。

公开(公告)号：US20150156693A1

公开(公告)日：2015-06-04

申请号：US14095292

申请日：2013-12-03

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Ajoy K. Singh ,  Dawei Zhang

IPC: H04W36/30 ,  H04W72/04

CPC classification number: H04W36/30 ,  H04L5/001 ,  H04L5/0053 ,  H04W72/04 ,  H04W72/0406 ,  H04W76/14

Abstract: Device-to-device (D2D) communications in conjunction with carrier aggregation. A base station (BS) may coordinate D2D communication between two wireless user equipment (UE) devices. A primary cell may be configured for communicating with each of the UEs. A secondary cell may be configured for D2D communication between the two UEs. The primary cell and the secondary cell may utilize different component carriers. Additionally, cross-carrier scheduling may be used, such that at least some control information for the secondary cell is communicated via the primary cell.

Abstract translation: 与载波聚合相结合的设备到设备（D2D）通信。 基站（BS）可以协调两个无线用户设备（UE）设备之间的D2D通信。 主单元可以被配置为与每个UE进行通信。 二级小区可以被配置用于两个UE之间的D2D通信。 主电池和二次电池可以利用不同的分量载流子。 此外，可以使用跨载波调度，使得至少一些用于辅助小区的控制信息经由主小区传送。

公开(公告)号：US20150156635A1

公开(公告)日：2015-06-04

申请号：US14094327

申请日：2013-12-02

Applicant: APPLE INC.

Inventor： Huarui Liang ,  Tarik Tabet ,  Dawei Zhang

IPC: H04W16/14 ,  H04W48/16 ,  H04W36/00 ,  H04W28/04

CPC classification number: H04L5/0032 ,  H04J11/0093 ,  H04L5/001 ,  H04L5/0098 ,  H04L27/0006 ,  H04L41/12 ,  H04W16/14 ,  H04W28/04 ,  H04W36/0061 ,  H04W48/16 ,  H04W72/0413 ,  H04W72/085

Abstract: Described herein are systems and methods for carrier aggregation deployment and organization in unlicensed bands. A method may comprise scanning, by a transceiver within a base station, channels in a band of interest, reporting, by the transceiver, signal measurement information to the base station, cell searching, by the transceiver, channels in the band of interest, determining channel information for neighboring each channel, and transmitting, by the transceiver, the channel information to the base station.

Abstract translation: 这里描述了用于在未许可频带中的载波聚合部署和组织的系统和方法。 一种方法可以包括通过基站内的收发信机扫描感兴趣的频带中的信道，由收发信机向基站报告信号测量信息，由收发信机搜索感兴趣频带中的信道，确定 用于相邻每个信道的信道信息，并且由收发器将信道信息发送到基站。

公开(公告)号：US20250150218A1

公开(公告)日：2025-05-08

申请号：US19011771

申请日：2025-01-07

Applicant: Apple Inc.

Inventor： Haijing Hu ,  Sarma V. Vangala ,  Alexander Sirotkin ,  Chunxuan Ye ,  Dawei Zhang ,  Fangli Xu ,  Naveen Kumar R. Palle Venkata ,  Pavan Nuggehalli ,  Ralf Rossbach ,  Sethuraman Gurumoorthy ,  Yuqin Chen ,  Zhibin Wu

IPC: H04L1/1829 ,  H04L1/1825 ,  H04W84/06

Abstract: Techniques, described herein, include solutions for managing hybrid automatic repeat request (HARQ) processes and communications for non-terrestrial networks (NTNs) (e.g., a wireless communication network that includes a satellite network component). A user equipment (UE) may receive a request for capability information of the UE and in response, transmit a message indicating the capability information of the UE, wherein the capability information includes HARQ disablement information indicating whether the UE supports disabled HARQ feedback.

公开(公告)号：US12294964B2

公开(公告)日：2025-05-06

申请号：US17813792

申请日：2022-07-20

Applicant: Apple Inc.

Inventor： Ankit Bhamri ,  Dawei Zhang ,  Sigen Ye ,  Wei Zeng ,  Yang Tang

IPC: H04W56/00

Abstract: This application relates to wireless communications, including methods and apparatus to manage uplink (UL) transmit switching with multiple timing advance groups (TAGs) for wireless devices. A wireless device is configured to select N≥2 radio frequency carriers for UL transmission from M>N available radio frequency carriers and subsequently send UL transmissions to a cellular wireless network based on the configuration. The M available radio frequency carriers are divided into distinct TAGs, each TAG having a distinct timing advance value, and the N radio frequency carriers belong to a single TAG. The wireless device is further configured to switch to a second set of N UL radio frequency carriers, after an uplink switching gap time period, based on a TAG medium access control (MAC) control element (CE), received the cellular wireless network, which specifies a second TAG from which to select the second set of N UL radio frequency carriers.

公开(公告)号：US12289610B2

公开(公告)日：2025-04-29

申请号：US17437787

申请日：2021-04-01

Applicant: Apple Inc.

Inventor： Huaning Niu ,  Jie Cui ,  Dawei Zhang ,  Yang Tang ,  Manasa Raghavan ,  Qiming Li ,  Xiang Chen ,  Haitong Sun ,  Yushu Zhang

IPC: H04W16/18 ,  H04W4/44 ,  H04W36/32 ,  H04W36/08

Abstract: A network may transmit either beam deployment information or beam number information to a user equipment (UE) carried on a train and configured for operation in the millimeter wave band. The deployment information may include deployment related distance parameters or azimuth angle spread parameters. The beam number information may indicate a number of network beams associated with a current cell. The UE may determine a number of UE receive beams based on deployment information or the network-indicated number of network beams. The UE may transmit feedback to the network, indicating the number of UE receive beams. Alternatively, the network may send a configuration message indicating a first number of UE receive beams to the UE, which the UE may treat as an upper bound or lower bound in its determination of a desired number of UE receive beams. The UE may transmit the desired number to the network.

公开(公告)号：US12289606B2

公开(公告)日：2025-04-29

申请号：US17437909

申请日：2020-10-15

Applicant: Apple Inc.

Inventor： Sigen Ye ,  Oghenekome Oteri ,  Weidong Yang ,  Wei Zeng ,  Hong He ,  Yushu Zhang ,  Haitong Sun ,  Huaning Niu ,  Chunhai Yao ,  Dawei Zhang

IPC: H04W16/14 ,  H04W74/0808 ,  H04W76/10

Abstract: This disclosure relates to techniques for a wireless device to initiate channel occupancy in unlicensed spectrum in a wireless communication system. The wireless device may establish a wireless link with a cellular base station. The wireless device may determine to perform an uplink transmission to the cellular base station on an unlicensed frequency channel. The wireless device may determine whether the cellular base station has channel occupancy of the unlicensed frequency channel. The wireless device may determine whether to initiate channel occupancy of the unlicensed frequency channel. The decision whether to initiate channel occupancy may be based at least in part on whether the cellular base station has channel occupancy of the unlicensed frequency channel.