公开(公告)号：US20200305019A1

公开(公告)日：2020-09-24

申请号：US16362572

申请日：2019-03-22

Applicant: Apple Inc.

Inventor： Sai Sravan Bharadwaj Karri ,  Sethuraman Gurumoorthy ,  Sree Ram Kodali ,  Stephen C. Schweizer ,  Alexander Allahverdiev ,  Murtaza A. Shikari ,  Srirang A. Lovlekar ,  Vijay Venkataraman ,  Wanping Zhang ,  Yifan Zhu

IPC: H04W28/02 ,  H04L29/06 ,  H04W24/02

Abstract: Apparatuses, systems, and methods for improving efficiency in IMS registration and management in a wireless communication device, such as a UE. In some scenarios, the UE may, while implementing IMS services (e.g. for VoLTE) over a wireless communication link with a cellular network, determine that the wireless communication link is not performing at an acceptable level. In response, the UE may start a timer and buffer IMS SIP signaling messages while the timer is running. If the wireless communication link performance is restored to an acceptable level before expiration of the timer, the UE may transmit the buffered IMS SIP signaling messages. If the timer expires prior to restoration of the wireless communication link, the buffered messages may be cleared, and the UE may locally deregister from IMS registration and IMS PDN. In some scenarios, select IMS SIP signaling messages may be omitted or removed from the buffer.

公开(公告)号：US20200220665A1

公开(公告)日：2020-07-09

申请号：US16735049

申请日：2020-01-06

Applicant: Apple Inc.

Inventor： Haitong Sun ,  Wei Zhang ,  Tianyan Pu ,  Dawei Zhang ,  Wei Zeng ,  Yuchul Kim ,  Yu Zhang ,  Wanping Zhang ,  Jia Tang ,  Yang Li

IPC: H04L1/18 ,  H04L5/00 ,  H04W72/04 ,  H04W72/12 ,  H04B7/0452

Abstract: Apparatuses, systems, and methods for performing uplink and downlink communication in cell edge scenarios with improved reliability. A wireless device may establish a radio resource control connection with a first cell. The wireless device may determine that a second cell strongly interferes with communication with the first cell. The wireless device may provide an indication that the second cell is a strongly interfering cell to the first cell. The first cell may coordinate with the second cell to transmit data to the wireless device, and to receive data from the wireless device, based at least in part on the indication that the second cell is a strongly interfering cell.

公开(公告)号：US09838192B2

公开(公告)日：2017-12-05

申请号：US14501814

申请日：2014-09-30

Applicant: Apple Inc.

Inventor： Wanping Zhang ,  Li Su ,  Yingjie Zhao

IPC: H04L5/00 ,  H04W76/06 ,  H04W76/02 ,  H04W72/12 ,  H04W88/02

CPC classification number: H04L5/0098 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0085 ,  H04W88/02

Abstract: This disclosure relates to management of a secondary component carrier by a wireless device when using carrier aggregation. According to one embodiment, a primary component carrier for communication between a base station and a wireless device may be configured according to a first wireless communication technology. A secondary component carrier may also be configured. The wireless device may detect a trigger condition to deactivate the secondary component carrier. In response, the wireless device may modify its feedback to the base station with respect to channel conditions for the secondary component carrier to cause the base station to deactivate the secondary component carrier.

公开(公告)号：US09655068B2

公开(公告)日：2017-05-16

申请号：US14604289

申请日：2015-01-23

Applicant: APPLE INC.

Inventor： Yingjie Zhao ,  Li Su ,  Wanping Zhang ,  Sreevalsan Vallath

IPC: H04W52/12 ,  H04W52/40 ,  H04W52/50 ,  H04W52/24

CPC classification number: H04W52/50 ,  H04W52/12 ,  H04W52/242

Abstract: A user equipment and a method performed by the user equipment. The user equipment includes a transceiver configured to enable the user equipment to establish a connection with a first network and a second network, the first network configured to provide signals to control a transmit power of the transceiver and a processor configured to control the transmit power of the transceiver. The processor controls the transmit power by determining at least one network operation of the user equipment, the network operation associated with a configuration of the connection with the LTE network, receiving a signal from the LTE network indicating an increase in the transmit power to be used and performing a power operation that adjusts the transmit power of the transceiver less than the increase indicated in the signal.

公开(公告)号：US09591572B2

公开(公告)日：2017-03-07

申请号：US14604246

申请日：2015-01-23

Applicant: APPLE INC.

Inventor： Yingjie Zhao ,  Li Su ,  Sreevalsan Vallath ,  Wanping Zhang

IPC: H04W52/02 ,  H04W72/14 ,  H04L1/00 ,  H04W76/00 ,  H04W72/04

CPC classification number: H04W52/0225 ,  H04L1/00 ,  H04L1/1854 ,  H04W52/0216 ,  H04W52/0229 ,  H04W52/0274 ,  H04W72/042 ,  H04W76/00 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/23 ,  Y02D70/24

Abstract: A user equipment (UE) and corresponding methods to conserve power by the UE. The UE includes a transceiver, the transceiver configured to enable the UE to establish a connection with a Long Term Evolution (LTE) network and configured to operate using a Connected Discontinuous Reception (CDRX) functionality. The processor controls the transceiver by receiving an uplink (UL) grant at a first subframe of a frame of a cycle of the CDRX functionality, transmitting data based upon the UL grant at a predetermined second subframe, and receiving a response from the LTE network corresponding to one of an acknowledgement (ACK) and a negative ACK (NACK) at a predetermined third subframe. The processor deactivates the transmitter for a remainder of the frame based or deactivates a receiver for a remainder of the frame based upon whether the ACK is received.

Abstract translation: 用户设备（UE）和相应的方法来节省UE的功率。 所述UE包括收发器，所述收发器被配置为使所述UE能够与长期演进（LTE）网络建立连接并且被配置为使用连接的不连续接收（CDRX）功能进行操作。 处理器通过在CDRX功能的周期的帧的第一子帧处接收上行链路（UL）许可来控制收发器，基于在预定的第二子帧处的UL许可发送数据，并且从LTE网络接收对应的响应 到预定的第三子帧的确认（ACK）和否定ACK（NACK）中的一个。 处理器基于帧的剩余部分去激活发射机，或者基于是否接收到ACK来停用帧的剩余部分的接收机。

公开(公告)号：US09526038B2

公开(公告)日：2016-12-20

申请号：US14231556

申请日：2014-03-31

Applicant: Apple Inc.

Inventor： Li Su ,  Wanping Zhang ,  Qiang Miao

IPC: H04W4/00 ,  H04W36/00

CPC classification number: H04W36/0022 ,  H04L69/28

Abstract: A user equipment (UE) communicating in a wireless communication system may include a primary radio frequency (RF) receive chain (PRFRC) and one or more secondary RF receive chains (SRFRCs). When the UE is to undertake a circuit switched fallback (CSFB) process, the UE may use the one or more SRFRCs to search for candidate 2G/3G cells while in parallel using the PRFRC to wait for an ESR response. The UE may initiate a CSFB process and send an extended service request (ESR) message on a packet-switched network. The UE may monitor for receipt of an ESR response on the packet-switched network using a first RF receive chain, and while monitoring, also acquire an initial circuit-switched network using a second RF receive chain. The UE may start an ESR timer when sending the ESR message, and detect whether the ESR timer expires before the ESR response is received.

Abstract translation: 在无线通信系统中通信的用户设备（UE）可以包括主射频（RF）接收链（PRFRC）和一个或多个次级RF接收链（SRFRC）。 当UE进行电路交换回退（CSFB）处理时，UE可以使用一个或多个SRFRC来搜索候选2G / 3G小区，同时使用PRFRC来等待ESR响应。 UE可以发起CSFB进程，并在分组交换网络上发送扩展服务请求（ESR）消息。 UE可以使用第一RF接收链监测在分组交换网络上的ESR响应的接收，并且在监视的同时也使用第二RF接收链获取初始电路交换网络。 UE可以在发送ESR消息时启动ESR定时器，并且在接收到ESR响应之前检测ESR定时器是否到期。

公开(公告)号：US09369927B2

公开(公告)日：2016-06-14

申请号：US14219776

申请日：2014-03-19

Applicant: Apple Inc.

Inventor： Li Su ,  Wanping Zhang ,  Yingjie Zhao

IPC: H04W36/00 ,  H04W36/36 ,  H04W56/00 ,  H04W68/00 ,  H04W88/06 ,  H04W52/02 ,  H04W74/08 ,  H04W36/30 ,  H04W24/00 ,  H04W36/14

CPC classification number: H04W36/0022 ,  H04W36/0061 ,  H04W36/0083 ,  H04W36/0088 ,  H04W36/14 ,  H04W36/30 ,  H04W36/36 ,  H04W52/0216 ,  H04W52/0229 ,  H04W56/0015 ,  H04W68/00 ,  H04W68/12 ,  H04W74/0833 ,  H04W88/06 ,  Y02D70/00 ,  Y02D70/122 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/23 ,  Y02D70/24 ,  Y02D70/26

Abstract: Performing selective tune-away by a user equipment (UE). The UE may include a first radio that is configurable to operate according to a first radio access technology (RAT) and a second RAT. The UE may use the radio to communicate using the first RAT and the second RAT using the first radio. The UE may perform handover for the first RAT. During handover, the UE may perform a page decoding for the second RAT, but may not perform (e.g., may block) neighbor cell detection for the second RAT during the handover of the first RAT. After completion of the handover, the UE may perform neighbor cell detection for the second RAT.

Abstract translation: 由用户设备（UE）执行选择性调谐。 UE可以包括可配置为根据第一无线电接入技术（RAT）和第二RAT操作的第一无线电。 UE可以使用第一无线电使用第一RAT和第二RAT进行无线电通信。 UE可以执行第一RAT的切换。 在切换期间，UE可以在第一RAT的切换期间执行第二RAT的寻呼解码，但是可能不执行（例如，可能阻止）第二RAT的相邻小区检测。 在完成切换之后，UE可以执行第二RAT的相邻小区检测。

公开(公告)号：US08958799B2

公开(公告)日：2015-02-17

申请号：US13777454

申请日：2013-02-26

Applicant: Apple Inc.

Inventor： Sarma V. Vangala ,  Samy Khay-Ibbat ,  Si Li ,  Sreevalsan Vallath ,  Swaminathan Balakrishnan ,  Tahir Shamim ,  Tarik Tabet ,  Wael S. Barakat ,  Wanping Zhang

IPC: H04W36/00 ,  H04W36/26

CPC classification number: H04W36/26 ,  H04W36/14 ,  H04W36/30 ,  H04W36/36

Abstract: User Equipment (UE) based forced inter radio access technology (iRAT) handover. A connection to a network may be established via a first cell operating according to a first radio access technology (RAT). It may be determined to initiate a handover of the UE from the first cell to a second cell operating according to a second RAT. An indication may be transmitted to the network to initiate a handover of the UE from the first cell to the second cell. An indication may be received from the network to perform handover of the UE from the first cell to the second cell in response to the indication to initiate the handover. Handover of the UE from the first cell to the second cell may be performed in response to the indication to perform the handover. Handover may include releasing the connection to the network via the first cell and establishing a connection to the network via the second cell.

Abstract translation: 基于用户设备（UE）的强制无线接入技术（iRAT）切换。 可以经由根据第一无线电接入技术（RAT）操作的第一小区来建立到网络的连接。 可以确定发起UE从第一小区到根据第二RAT操作的第二小区的切换。 可以向网络发送指示以发起UE从第一小区到第二小区的切换。 可以响应于启动切换的指示，从网络接收指示以执行UE从第一小区到第二小区的切换。 可以响应于执行切换的指示来执行UE从第一小区到第二小区的切换。 切换可以包括经由第一小区释放到网络的连接，并经由第二小区建立到网络的连接。

公开(公告)号：US20140113630A1

公开(公告)日：2014-04-24

申请号：US13777454

申请日：2013-02-26

Applicant: APPLE INC.

Inventor： Sarma V. Vangala ,  Samy Khay-Ibbat ,  Si Li ,  Sreevalsan Vallath ,  Swaminathan Balakrishnan ,  Tahir Shamim ,  Tarik Tabet ,  Wael S. Barakat ,  Wanping Zhang

IPC: H04W36/26

CPC classification number: H04W36/26 ,  H04W36/14 ,  H04W36/30 ,  H04W36/36

Abstract: User Equipment (UE) based forced inter radio access technology (iRAT) handover. A connection to a network may be established via a first cell operating according to a first radio access technology (RAT). It may be determined to initiate a handover of the UE from the first cell to a second cell operating according to a second RAT. An indication may be transmitted to the network to initiate a handover of the UE from the first cell to the second cell. An indication may be received from the network to perform handover of the UE from the first cell to the second cell in response to the indication to initiate the handover. Handover of the UE from the first cell to the second cell may be performed in response to the indication to perform the handover. Handover may include releasing the connection to the network via the first cell and establishing a connection to the network via the second cell.

Abstract translation: 基于用户设备（UE）的强制无线接入技术（iRAT）切换。 可以经由根据第一无线接入技术（RAT）操作的第一小区来建立到网络的连接。 可以确定发起UE从第一小区到根据第二RAT操作的第二小区的切换。 可以向网络发送指示以发起UE从第一小区到第二小区的切换。 可以响应于启动切换的指示，从网络接收指示以执行UE从第一小区到第二小区的切换。 可以响应于执行切换的指示来执行UE从第一小区到第二小区的切换。 切换可以包括经由第一小区释放到网络的连接，并经由第二小区建立到网络的连接。

公开(公告)号：US11172492B2

公开(公告)日：2021-11-09

申请号：US16591429

申请日：2019-10-02

Applicant: Apple Inc.

Inventor： Wei Zhang ,  Wanping Zhang ,  Haitong Sun ,  Yuqin Chen ,  Pengkai Zhao ,  Jia Tang ,  Ping Wang ,  Wei Zeng ,  Haijing Hu ,  Dawei Zhang ,  Sami M. Almalfouh ,  Johnson O. Sebeni

IPC: H04W72/10 ,  H04W76/28 ,  H04W4/029 ,  G08G1/16 ,  H04W4/02 ,  H04W8/08 ,  H04W52/02 ,  H04W72/12 ,  H04W74/00 ,  H04W76/27 ,  G05D1/00 ,  G05D1/02 ,  H04W4/40

Abstract: Embodiments are presented herein for adjusting the conduct of routine communications of safety messages in V2X networks in order to conserve resources in participating power-limited devices while satisfying V2X system latency demands. Scheduling (e.g., timing and/or frequency) of safety message communications performed by certain UE devices participating in a V2X network may be dynamically adjusted according to various criteria, such as factors relating to the DRX cycle schedule, motion or mobility, traffic environment, and/or battery or power capabilities of the UE devices, which may conserve UE resources and power consumption. Certain UE devices may efficiently transmit safety messages to the V2X network using one of several proposed RACH-based procedures. In some embodiments, the size of safety message communications may be reduced through various compression techniques, and/or by reducing the amount of contained information, e.g., by omitting certain parameters, which may reduce the resources consumed by performing safety message communications.