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公开(公告)号：US20140073307A1
公开(公告)日：2014-03-13
申请号：US13683959
申请日：2012-11-21
Applicant: APPLE INC.
Inventor： Wanping Zhang , Tahir Shamim , Swaminathan Balakrishnan
IPC: H04W80/00
Abstract: In order to reduce the time delay when transitioning between different communication protocols used to communicate information via a cellular-telephone network, an electronic device (such as a cellular telephone) may only partially disable a software stack associated with a current communication protocol. In particular, after receiving an indicator that there is a message to be communicated using a second communication protocol while the electronic device is currently configured to communicate using a first communication protocol, the electronic device may disable a portion of a software stack associated with the first communication protocol and may enable a software stack associated with the second communication protocol. Then, the electronic device communicates the message using the second communication protocol. Next, the electronic device: may disable the software stack associated with the second communication protocol and may enable the portion of the software stack associated with the first communication protocol.
Abstract translation: 为了减少在用于通过蜂窝电话网络传送信息的不同通信协议之间的转换时的时间延迟，电子设备（例如，蜂窝电话）可能仅部分地禁用与当前通信协议相关联的软件栈。 具体地，在电子设备当前被配置为使用第一通信协议进行通信时，在接收到指示符之后，使用第二通信协议存在将要通信的消息，电子设备可以禁用与第一通信协议相关联的软件栈的一部分 通信协议并且可以实现与第二通信协议相关联的软件栈。 然后，电子设备使用第二通信协议来传送消息。 接下来，电子设备：可以禁用与第二通信协议相关联的软件栈，并且可以启用与第一通信协议相关联的软件栈的部分。
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公开(公告)号：US20170353990A1
公开(公告)日：2017-12-07
申请号：US15174555
申请日：2016-06-06
Applicant: Apple Inc.
Inventor： Sindhu Sivasankaran Nair , Tahir Shamim , Gaurav Arya , Thanigaivelu Elangovan , Lakshmi N. Kavuri
CPC classification number: H04W8/005 , H04W8/183 , H04W8/22 , H04W48/08 , H04W48/16 , H04W64/00 , H04W76/19
Abstract: This disclosure relates to out of service recovery techniques for an accessory device. According to some embodiments, the accessory device may receive cellular communication system selection information from a paired device. The accessory device may store the communication system selection information. At some point, it may be determined that the accessory device has lost cellular communication service. The accessory device may perform a cellular communication service scan utilizing the system selection information received from the paired device along with its own historical information and location based frequency lists.
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公开(公告)号：US09832811B2
公开(公告)日：2017-11-28
申请号：US15083142
申请日：2016-03-28
Applicant: Apple Inc.
Inventor： Zhu Ji , Johnson O. Sebeni , Tahir Shamim
IPC: H04W76/04 , H04W52/02 , H04B17/336 , H04L5/00 , H04W84/04
CPC classification number: H04W76/048 , H04B17/336 , H04L5/0005 , H04L5/0007 , H04W52/02 , H04W52/0216 , H04W52/0245 , H04W76/28 , H04W84/042 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/24
Abstract: Methods and apparatus to reduce power consumption in user equipment (UE) that operates in a connected discontinuous reception (C-DRX) mode while in communication with wireless network are disclosed. A C-DRX warm-up period before the UE enters an on-duration is adjusted dynamically based on one or more factors including a time division duplex (TDD) uplink/downlink (UL/DL) subframe configuration, signal-to-noise ratio (SNR) values, and Doppler shift values. The C-DRX warm-up period is adapted based on the pattern of DL subframes in the UL/DL subframe configuration by including DL subframes that best contribute to channel estimation and adaptive tracking loops based on measured SNR and Doppler shift conditions. Favorable channel conditions, such as higher SNR and lower Doppler shift, can require fewer DL subframes and consequently shorter C-DRX warm-up periods. Higher Doppler shift values indicate more rapidly varying channel conditions and require DL subframes positioned closer to the start of the on-duration.
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14.发明授权公开(公告)号：US09301257B2
公开(公告)日：2016-03-29
申请号：US14279160
申请日：2014-05-15
Applicant: Apple Inc.
Inventor： Zhu Ji , Johnson O. Sebeni , Tahir Shamim
IPC: H04W52/02
CPC classification number: H04W76/048 , H04B17/336 , H04L5/0005 , H04L5/0007 , H04W52/02 , H04W52/0216 , H04W52/0245 , H04W76/28 , H04W84/042 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/24
Abstract: Methods and apparatus to reduce power consumption in user equipment (UE) that operates in a connected discontinuous reception (C-DRX) mode while in communication with wireless network are disclosed. A C-DRX warm-up period before the UE enters an on-duration is adjusted dynamically based on one or more factors including a time division duplex (TDD) uplink/downlink (UL/DL) subframe configuration, signal-to-noise ratio (SNR) values, and Doppler shift values. The C-DRX warm-up period is adapted based on the pattern of DL subframes in the UL/DL subframe configuration by including DL subframes that best contribute to channel estimation and adaptive tracking loops based on measured SNR and Doppler shift conditions. Favorable channel conditions, such as higher SNR and lower Doppler shift, can require fewer DL subframes and consequently shorter C-DRX warm-up periods. Higher Doppler shift values indicate more rapidly varying channel conditions and require DL subframes positioned closer to the start of the on-duration.
Abstract translation: 公开了在与无线网络通信的情况下，以连接的不连续接收（C-DRX）模式工作的用户设备（UE）中的功耗降低的方法和装置。 基于包括时分双工（TDD）上行链路/下行链路（UL / DL）子帧配置，信噪比的一个或多个因素动态地调整UE进入接通持续时间之前的C-DRX预热时段 （SNR）值和多普勒频移值。 基于UL / DL子帧配置中的DL子帧的模式，基于测量的SNR和多普勒频移条件，包括最有助于信道估计和自适应跟踪环路的DL子帧，来适应C-DRX预热周期。 有利的信道条件，如较高的信噪比和较低的多普勒频移，可能需要更少的DL子帧，从而可以减少C-DRX预热周期。 较高的多普勒频移值表示更快速变化的信道状况，并且要求DL子帧位于接近开启持续时间的开始位置。
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公开(公告)号：US09271260B2
公开(公告)日：2016-02-23
申请号：US14061991
申请日：2013-10-24
Applicant: Apple Inc.
Inventor： Wael S. Barakat , Chandra S. Chetty , Johnson O. Sebeni , Raghuveer Mallikarjunan , Swaminathan Balakrishnan , Tahir Shamim
CPC classification number: H04W68/02
Abstract: Enabling receive diversity based on detecting incorrect paging message length. A paging channel may be monitored. An indication of a paging message may be received on the paging channel. The paging message may include a message length field indicating a message length of the paging message. The message length field of the paging message may be received on the paging channel and decoded. It may be determined that the message length indicated in the message length field is incorrect. Receive diversity may be enabled for at least one subsequent paging occasion in response to determining that the message length indicated in the message length field is incorrect.
Abstract translation: 基于检测到不正确的寻呼消息长度，实现接收分集。 可以监视寻呼信道。 可以在寻呼信道上接收寻呼消息的指示。 寻呼消息可以包括指示寻呼消息的消息长度的消息长度字段。 可以在寻呼信道上接收寻呼消息的消息长度字段并进行解码。 可以确定消息长度字段中指示的消息长度不正确。 响应于确定消息长度字段中指示的消息长度不正确，可以为至少一个后续寻呼时机启用接收分集。
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Patent Agency Ranking
16.发明申请ADAPTIVE PHYSICAL LAYER WARM-UP FOR LTE TDD C-DRX POWER OPTIMIZATION 有权适用于LTE TDD C-DRX功率优化的自适应物理层保护公开(公告)号：US20150334656A1
公开(公告)日：2015-11-19
申请号：US14279160
申请日：2014-05-15
Applicant: Apple Inc.
Inventor： Zhu Ji , Johnson O. Sebeni , Tahir Shamim
CPC classification number: H04W76/048 , H04B17/336 , H04L5/0005 , H04L5/0007 , H04W52/02 , H04W52/0216 , H04W52/0245 , H04W76/28 , H04W84/042 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/24
Abstract: Methods and apparatus to reduce power consumption in user equipment (UE) that operates in a connected discontinuous reception (C-DRX) mode while in communication with wireless network are disclosed. A C-DRX warm-up period before the UE enters an on-duration is adjusted dynamically based on one or more factors including a time division duplex (TDD) uplink/downlink (UL/DL) subframe configuration, signal-to-noise ratio (SNR) values, and Doppler shift values. The C-DRX warm-up period is adapted based on the pattern of DL subframes in the UL/DL subframe configuration by including DL subframes that best contribute to channel estimation and adaptive tracking loops based on measured SNR and Doppler shift conditions. Favorable channel conditions, such as higher SNR and lower Doppler shift, can require fewer DL subframes and consequently shorter C-DRX warm-up periods. Higher Doppler shift values indicate more rapidly varying channel conditions and require DL subframes positioned closer to the start of the on-duration.
Abstract translation: 公开了在与无线网络通信的情况下，以连接的不连续接收（C-DRX）模式工作的用户设备（UE）中的功耗降低的方法和装置。 基于包括时分双工（TDD）上行链路/下行链路（UL / DL）子帧配置，信噪比的一个或多个因素动态地调整UE进入接通持续时间之前的C-DRX预热时段 （SNR）值和多普勒频移值。 基于UL / DL子帧配置中的DL子帧的模式，基于测量的SNR和多普勒频移条件，包括最有助于信道估计和自适应跟踪环路的DL子帧，来适应C-DRX预热周期。 有利的信道条件，如较高的信噪比和较低的多普勒频移，可能需要更少的DL子帧，从而可以减少C-DRX预热周期。 较高的多普勒频移值表示更快速变化的信道状况，并且要求DL子帧位于接近开启持续时间的开始位置。
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17.发明授权公开(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
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。
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公开(公告)号：US20140219184A1
公开(公告)日：2014-08-07
申请号：US13761798
申请日：2013-02-07
Applicant: APPLE INC.
Inventor： Shivesh Makharia , Tahir Shamim , Longda Xing
IPC: H04W28/18
Abstract: Improving transmission control protocol (TCP) uplink performance of a wireless user equipment (UE) device which multiplexes radio resources between multiple radio access technologies (RATs). Radio control may be provided to a radio resource control (RRC) entity that operates according to a first RAT at a first time. The first RAT may utilize TCP packet-switched (PS) communications. As a second time, radio control may be provided to an RRC entity that operates according to a second RAT which utilizes circuit-switched communications in order to check for paging messages. Radio control by the first RAT's RRC entity may be suspended while radio control is provided to the second RAT's RRC entity. An indication that radio control by the first RAT's RRC entity is suspended may be provided to a TCP entity that operates according to the first RAT. The TCP entity may suspend an uplink retransmission timer in response to the indication.
Abstract translation: 改进在多个无线电接入技术（RAT）之间复用无线电资源的无线用户设备（UE）设备的传输控制协议（TCP）上行链路性能。 无线电控制可以提供给在第一时间根据第一RAT操作的无线电资源控制（RRC）实体。 第一RAT可以利用TCP分组交换（PS）通信。 作为第二次，无线电控制可以被提供给根据利用电路交换通信的第二RAT操作的RRC实体，以便检查寻呼消息。 可以暂停第一RAT的RRC实体的无线控制，同时向第二RAT的RRC实体提供无线电控制。 可以将暂停由第一RAT的RRC实体进行的无线电控制的指示提供给根据第一RAT操作的TCP实体。 TCP实体可以响应于该指示暂停上行链路重传定时器。
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19.发明申请公开(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
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。
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公开(公告)号：US11516822B2
公开(公告)日：2022-11-29
申请号：US16565753
申请日：2019-09-10
Applicant: Apple Inc.
Inventor： Camille Chen , Akshay Tumkur Rajshekhar , Arjun Dheer , Gordon Kin , Sanjay Mani , Yang Yu , Tahir Shamim
Abstract: Methods and apparatuses are presented to facilitate coexistence between multiple wireless communication protocols implemented by a wireless communication device, using a shared antenna, e.g., due to limitations resulting from a small form factor of the wireless communication device. The wireless communication device may determine whether communications according to a second protocol are causing performance of communications according to a first protocol to fall below a threshold level. If so, the wireless communication device may operate in a mode that favors communications according to the first protocol. If not, the wireless communication device may operate in a mode that favors communications according to the second protocol. For example, the mode that favors communications according to the first protocol may include temporarily implementing operations to remedy the poor performance of the communications according to the first, e.g., periodically, until the performance of the communications according to the first protocol recovers.
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