公开(公告)号：US20180124705A1

公开(公告)日：2018-05-03

申请号：US15839252

申请日：2017-12-12

Applicant: Apple Inc.

Inventor： Li Su ,  Stephan V. Schell ,  Jianxiong Shi ,  Sami M. Almalfouh

IPC: H04W52/02 ,  H04W72/02 ,  H04J3/16

CPC classification number: H04W52/0251 ,  H04J3/1694 ,  H04W52/0261 ,  H04W52/0277 ,  H04W72/02 ,  Y02B70/30 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/23 ,  Y02D70/25 ,  Y02D70/26

Abstract: In some embodiments, a user equipment device (UE) implements improved communication methods which include radio resource time multiplexing, dynamic sub-frame allocation, and UE transmit duty cycle control. In some embodiments, the UE may communicate with base stations using radio frames that include multiple sub-frames, transmit information regarding allocation of a portion of the sub-frames of a respective radio frame for each of a plurality of the radio frames, and transmit and receive data using allocated sub-frames and not using unallocated sub-frames. In some embodiments, the UE may operate according to a sub-frame allocation based on its current power state. The UE may transmit information to the base station and receive the sub-frame allocation based on at least the information. In some embodiments, the UE may switch transmit duty cycles based on an occurrence of a condition at the UE. The UE may inform the network of the switch.

公开(公告)号：US09949311B2

公开(公告)日：2018-04-17

申请号：US14604351

申请日：2015-01-23

Applicant: APPLE INC.

Inventor： Yingjie Zhao ,  Wanping Zhang ,  Li Su

IPC: H04W76/02

CPC classification number: H04W76/19 ,  H04W76/12

Abstract: A system, apparatus and method to maintain continuity of a Voice over Long Term Evolution (LTE) (VoLTE) call. The system includes a first user equipment (UE) configured to perform a (VoLTE) call and a second UE configured to perform the VoLTE call with the first UE. The UE's are configured to maintain continuity of the VoLTE call by determining when one of a first dedicated bearer linked to a first default bearer of the first UE or a second dedicated bearer linked to a second default bearer of the second UE is lost and transmitting a signal to an Internet Protocol (IP) Multimedia Subsystem (IMS) server that prevents release of the determined dedicated bearer, the signal further triggering a re-activation of the determined dedicated bearer.

公开(公告)号：US20180070282A1

公开(公告)日：2018-03-08

申请号：US15685601

申请日：2017-08-24

Applicant: Apple Inc.

Inventor： Li Su ,  Srinivasan Nimmala

IPC: H04W36/32 ,  H04W72/00

CPC classification number: H04W36/32 ,  H04L1/0001 ,  H04L1/0025 ,  H04W72/005 ,  H04W72/1205 ,  H04W72/1284 ,  H04W88/02 ,  H04W92/02

Abstract: This disclosure relates to techniques for dynamically changing coverage modes and/or communication bandwidth in a wireless communication system. According to some embodiments, a wireless device may attach to a serving cell associated with a cellular network. A volume of data for upcoming communication with the cellular network may be determined. An indication of a requested communication bandwidth may be provided to the serving cell. The wireless device may communicate data with the serving cell using the requested communication bandwidth. In some instances, a request for narrowband communication bandwidth may result in use of a coverage enhancement mode, while a request for wideband communication bandwidth may result in use of a normal coverage mode.

公开(公告)号：US09854527B2

公开(公告)日：2017-12-26

申请号：US14834533

申请日：2015-08-25

Applicant: Apple Inc.

Inventor： Li Su ,  Stephan V. Schell ,  Jianxiong Shi ,  Sami M. Almalfouh

IPC: H04L12/26 ,  H04W52/02 ,  H04J3/16 ,  H04W72/02

CPC classification number: H04W52/0251 ,  H04J3/1694 ,  H04W52/0261 ,  H04W52/0277 ,  H04W72/02 ,  Y02B70/30 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/23 ,  Y02D70/25 ,  Y02D70/26

Abstract: In some embodiments, a user equipment device (UE) implements improved communication methods which include radio resource time multiplexing, dynamic sub-frame allocation, and UE transmit duty cycle control. In some embodiments, the UE may communicate with base stations using radio frames that include multiple sub-frames, transmit information regarding allocation of a portion of the sub-frames of a respective radio frame for each of a plurality of the radio frames, and transmit and receive data using allocated sub-frames and not using unallocated sub-frames. In some embodiments, the UE may operate according to a sub-frame allocation based on its current power state. The UE may transmit information to the base station and receive the sub-frame allocation based on at least the information. In some embodiments, the UE may switch transmit duty cycles based on an occurrence of a condition at the UE. The UE may inform the network of the switch.

公开(公告)号：US20170344296A1

公开(公告)日：2017-11-30

申请号：US15472420

申请日：2017-03-29

Applicant: Apple Inc.

Inventor： Li Su ,  Longda Xing

IPC: G06F3/06

CPC classification number: G06F13/00 ,  G06F1/3225 ,  G06F1/3275 ,  G11C11/4072

Abstract: A wireless communication device (UE) may include random access memory and associated software configured to selectively place different memory banks into either an active power on mode, retention mode, or power off mode. The selective placement of memory banks into different modes may be performed based on a variety of factors including software module voting information, a current power mode of the memory banks, one or more software program(s) and/or data currently stored on the memory banks, and a counter that counts an amount of time during which a memory bank is not accessed. The placement of memory banks into different modes may be controlled by a memory controller coupled to the memory banks.

公开(公告)号：US20170311189A1

公开(公告)日：2017-10-26

申请号：US15476632

申请日：2017-03-31

Applicant: Apple Inc.

Inventor： Sami M. Almalfouh ,  Li Su ,  Sai Sravan Bharadwaj Karri ,  Chiranjeevi M. Kosuri ,  Karthik Chockalingam ,  Swaminathan Balakrishnan

IPC: H04W24/08 ,  H04B17/336 ,  H04W56/00 ,  H04W76/02

CPC classification number: H04W24/08 ,  H04B17/336 ,  H04W56/0035 ,  H04W76/10

Abstract: This disclosure relates to radio link monitoring techniques. According to some embodiments, a wireless device may establish a radio link with a cellular base station according to a radio access technology. The base station may provide reference signals, control signals, and data signals to the wireless device via the radio link. The wireless device may perform radio link monitoring of the radio link using characteristics of decoding performance for one or more of the control signals and the data signals. Performing radio link monitoring of the radio link may include determining whether the radio link is in-sync or out-of-sync and determining whether radio link failure has occurred.

公开(公告)号：US09794832B2

公开(公告)日：2017-10-17

申请号：US14503229

申请日：2014-09-30

Applicant: Apple Inc.

Inventor： Yaoqi Yan ,  Qiang Miao ,  Jianxiong Shi ,  Wenping Lou ,  Zhiwei Wang ,  Li Su

IPC: H04W36/00 ,  H04W4/02

CPC classification number: H04W36/0022 ,  H04W4/029 ,  H04W36/0088

Abstract: A method, system, and apparatus are described for managing a device in a mixed wireless communication system. A device may decide to scan or not scan for a cell based on (or at least on) updating information. The updating information may be used together or individually. The updating information may be maintaining a time window in conjunction with a device's motion status, maintaining a list that tracks cell identity in areas of non-service, or utilizing network deployment information.

公开(公告)号：US09743452B2

公开(公告)日：2017-08-22

申请号：US14498861

申请日：2014-09-26

Applicant: Apple Inc.

Inventor： Li Su ,  Tarik Tabet ,  Navid Damji

IPC: H04W76/02 ,  H04W88/06 ,  H04W72/04

CPC classification number: H04W76/16 ,  H04W72/042 ,  H04W88/06

Abstract: Methods, apparatuses and computer-readable media are described that configure wireless circuitry of a wireless device. The wireless device establishes a connection to a first wireless network using first and second receiving signaling chains. The wireless device obtains a configuration processing delay time for the first wireless network and sends a first channel status report having a rank indicator value of one before starting a tune-away event at a time based on the obtained configuration processing delay time. The wireless device reconfigures at least one of the radio frequency signaling chains to receive signals from a second wireless network during the tune-away event. The wireless device subsequently sends a second channel status report having a rank indicator value greater than one before ending the tune-away event and reconfiguring the at least one of the radio frequency receive signaling chains back to the first wireless network.

公开(公告)号：US20170171817A1

公开(公告)日：2017-06-15

申请号：US15257629

申请日：2016-09-06

Applicant: Apple Inc.

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

IPC: H04W52/02 ,  H04W72/04 ,  H04W28/06

CPC classification number: H04W52/0222 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0087 ,  H04L65/608 ,  H04L69/04 ,  H04L69/22 ,  H04W28/06 ,  H04W72/0413 ,  H04W72/048 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/23 ,  Y02D70/24 ,  Y02D70/26

Abstract: A user equipment device (UE) may transmit, in a packet to a base station, information associated with resource configuration/resource requirement corresponding to wireless uplink communications of the wireless communication device. The base station may assign resources to the UE based on the received information. The UE may receive an uplink grant from the base station, with the uplink grant specifying resources for use by the wireless communication device during the uplink communications based on the information previously transmitted to the base station by the wireless communication device. The UE may send the packet at the time a voice call with the UE is initiated, and/or the UE may transmit the information during voice calls in response the UE changing one or more resource configuration parameters during the voice call. The UE may use Robust Header Compression packets of various types to transmit the resource configuration information.

公开(公告)号：US09572062B2

公开(公告)日：2017-02-14

申请号：US14733351

申请日：2015-06-08

Applicant: Apple Inc.

Inventor： Zhu Ji ,  Jason Shi ,  Johnson Sebeni ,  Navid Damji ,  Li Su

IPC: H04W24/10 ,  H04W52/02 ,  H04W24/08 ,  H04W76/04 ,  H04B17/309

CPC classification number: H04W24/10 ,  H04B17/309 ,  H04W24/08 ,  H04W52/02 ,  H04W52/0216 ,  H04W76/28 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/24 ,  Y02D70/25

Abstract: Methods and apparatus for managing radio measurements during discontinuous reception. In one exemplary embodiment, the distribution of Long Term Evolution (LTE) DRX measurements is staggered or distributed across multiple DRX cycles (which may be contiguous or non-contiguous) so as to reduce the transceiver activity and power consumption. The exemplary UE in one implementation only performs a subset of measurements during each DRX cycle. By staggering or distributing cell measurements over multiple DRX cycles, the UE can improve power consumption, while still conforming to measurement requirements.

Abstract translation: 在不连续接收期间管理无线电测量的方法和装置。 在一个示例性实施例中，长期演进（LTE）DRX测量的分布在多个DRX周期（其可以是连续的或不连续的）上交错或分布，以便减少收发器活动和功率消耗。 在一个实现中的示例性UE仅在每个DRX周期期间执行测量的子集。 通过在多个DRX周期上交错或分配小区测量，UE可以提高功耗，同时仍然符合测量要求。