公开(公告)号：US10110294B2

公开(公告)日：2018-10-23

申请号：US14952319

申请日：2015-11-25

Applicant: Apple Inc.

Inventor： Srinivasan Nimmala ,  Navid Damji ,  Tarik Tabet ,  Li Su ,  Longda Xing ,  Zhu Ji

IPC: H04B7/08 ,  H04W24/02 ,  H04W52/02

Abstract: A method for adaptively disabling receiver diversity is provided. The method can include a wireless communication device determining an active data traffic pattern; defining a threshold channel quality metric based at least in part on a threshold channel quality needed to support a threshold quality of service for the active data traffic pattern; comparing a measured channel quality to the threshold channel quality metric; and disabling receiver diversity in an instance in which the measured channel quality metric satisfies the threshold channel quality metric.

公开(公告)号：US20180287751A1

公开(公告)日：2018-10-04

申请号：US15941651

申请日：2018-03-30

Applicant: APPLE INC.

Inventor： Junsung LIM ,  Li Su ,  Johnson O. Sebeni ,  Yang Li ,  Young Jae Kim ,  Zhu Ji

IPC: H04L5/00 ,  H04L25/02

CPC classification number: H04L5/006 ,  H04L5/005 ,  H04L5/0094 ,  H04L25/0224 ,  H04L25/0226

Abstract: A method, device and integrated circuit for receiving signals in a narrow bandwidth range from a base station of a network, the narrow bandwidth range being a portion of an overall bandwidth range of the network and the signals comprising one or more of cell-specific reference signal (CRS) tones, determining whether a condition exists based on the one or more CRS tones, when the condition exists, extending the narrow bandwidth range to an extended narrow bandwidth range, the extended narrow bandwidth range including at least one further CRS tone than the narrow bandwidth range and monitoring the extended narrow bandwidth range to receive further signals comprising the at least one further CRS tone.

公开(公告)号：US20180242192A1

公开(公告)日：2018-08-23

申请号：US15851857

申请日：2017-12-22

Applicant: Apple Inc.

Inventor： Yingjie Zhao ,  Li Su ,  Murtaza A. Shikari ,  Sethuraman Gurumoorthy

IPC: H04W28/06 ,  H04L29/06

CPC classification number: H04W28/06 ,  H04L47/2483 ,  H04L69/04 ,  H04L69/22 ,  H04W80/00 ,  H04W80/08

Abstract: A wireless communication device (UE) may identify a data flow type associated with data packets to be wirelessly transmitted by the wireless communication device over a wireless network during uplink communications. The UE may determine, based on the data flow type, whether to perform header compression for the data packets on a default bearer assigned to the wireless communication device and associated with the data flow for wireless communications over the wireless network. The UE may perform packet header compression for data flow types for which the packet header size is at least a specified percentage of the total packet size. Packet header compression on the default bearer may be enabled at all times, in which case the UE may indicate to the network whether the UE supports header compression on the default bearer. Alternately, the UE may trigger header compression on the default bearer based on application requirements.

公开(公告)号：US10021544B2

公开(公告)日：2018-07-10

申请号：US15004673

申请日：2016-01-22

Applicant: Apple Inc.

Inventor： Jianxiong Shi ,  Li Su

IPC: H04W4/00 ,  H04W4/16 ,  H04M3/42 ,  H04W76/15 ,  H04W88/06

CPC classification number: H04W4/16 ,  H04M3/42042 ,  H04M3/42059 ,  H04M2207/18 ,  H04W76/15 ,  H04W88/06

Abstract: A Dual SIM Dual Standby (DSDS) user equipment (UE) which provides enhanced caller ID capabilities. In particular, the UE may be a Dual SIM Dual Active (DSDA) UE capable of using two SIMs and two radios so as to maintain two active voice calls simultaneously. The UE may include a single transmitter and one or more receivers. Mechanisms are described such that, when a first voice call is active, desirable services such as receiving and presenting caller ID information associated with this second call are provided to the user of the UE.

公开(公告)号：US09967808B2

公开(公告)日：2018-05-08

申请号：US14717510

申请日：2015-05-20

Applicant: Apple Inc.

Inventor： Harshit Chuttani ,  Li Su ,  Madhusudan Chaudhary ,  Sang Ho Baek ,  Someet K. Lal ,  Thanigaivelu Elangovan ,  Rajesh Ambati

IPC: H04W4/00 ,  H04W48/16 ,  H04W4/02 ,  H04W48/18 ,  H04W88/06

CPC classification number: H04W48/16 ,  H04W4/021 ,  H04W48/18 ,  H04W88/06

Abstract: Apparatuses, systems, and methods for multi-SIM user equipment (UE) devices to perform system selection. A UE may determine to perform system selection for a first SIM of the UE. Information, such as serving cell and/or neighboring cell information, may be obtained from a second SIM of the UE. System selection for the first SIM may be performed based at least in part on the information obtained from the second SIM.

公开(公告)号：US09942873B2

公开(公告)日：2018-04-10

申请号：US14807306

申请日：2015-07-23

Applicant: Apple Inc.

Inventor： Johnson O. Sebeni ,  Li Su ,  Jianxiong Shi

IPC: H04J3/00 ,  H04W68/02 ,  H04B1/7115 ,  H04L5/14 ,  H04W72/12 ,  H04W8/18 ,  H04W88/06

CPC classification number: H04W68/02 ,  H04B1/7115 ,  H04B2201/70979 ,  H04L5/14 ,  H04W8/183 ,  H04W72/1215 ,  H04W88/06

Abstract: Performing concurrent data communication and voice call monitoring using a single cellular radio. According to some embodiments, the UE may perform data communication, via the radio, using a first RAT, supported by a first SIM. The UE may also perform paging functions for a voice communication, via the radio, using a second RAT, supported by a second SIM. In some scenarios, the first and second RATs are the same. The data communication and the paging functions may be performed concurrently using shared physical layer resources. For example, the shared physical layer resources may comprise a shared software defined radio (SDR) configured to demodulate and/or decode signals of the data communication and the paging function. As another example, the shared physical layer resources may comprise a shared Rake receiver configured to demodulate signals of the data communication and the paging function.

公开(公告)号：US09888423B2

公开(公告)日：2018-02-06

申请号：US14498888

申请日：2014-09-26

Applicant: Apple Inc.

Inventor： Li Su ,  Jianxiong Shi

IPC: H04W36/30 ,  H04W36/14 ,  H04W36/00

CPC classification number: H04W36/30 ,  H04W36/0022 ,  H04W36/14

Abstract: Methods and apparatuses to use multiple receivers of a wireless communication device for fast return to a first network from a second network after termination of a Circuit Switched Fallback (CSFB) voice call is disclosed. A first receiver of the wireless communication device is used to process the CSFB voice call on the second network, while a second receiver of the wireless communication device is used to determine a strongest suitable cell available on the first network, while the voice call is active. A strongest suitable cell is instantly available to the wireless communication device after the CSFB voice call ends. In some embodiments, the first network is an LTE network, and the second network is a legacy network.

公开(公告)号：US09877271B2

公开(公告)日：2018-01-23

申请号：US14498879

申请日：2014-09-26

Applicant: Apple Inc.

Inventor： Li Su

IPC: H04W36/16 ,  H04W74/08 ,  H04W36/30 ,  H04W48/16 ,  H04W36/00

CPC classification number: H04W48/16 ,  H04W36/0022

Abstract: A method using multiple receivers of a wireless communication device to accelerate cell selection and reselection is disclosed. Multiple receivers of the wireless device are used to implement carrier aggregation in LTE connected mode. The multiple receivers of the wireless device are used to search for cells concurrently across multiple radio frequency bands and/or multiple radio access technologies during cell selection and/or cell reselection procedures. A first receiver and a second receiver of the wireless device each search for cells over different radio frequency bands simultaneously, and accordingly the cell selection and reselection time is effectively reduced compared to using only one receiver. Multiple receivers are also used concurrently, in parallel, to accelerate inter-frequency cell detection and measurement and for inter-RAT searches and measurements.

公开(公告)号：US09781737B2

公开(公告)日：2017-10-03

申请号：US14685537

申请日：2015-04-13

Applicant: Apple Inc.

Inventor： Li Su ,  Madhusudan Chaudhary ,  Jianxiong Shi ,  Longda Xing

IPC: H04W72/12 ,  H04J13/00 ,  H04W68/00 ,  H04W24/10 ,  H04W76/06 ,  H04W72/10

CPC classification number: H04W72/1242 ,  H04J13/00 ,  H04W24/10 ,  H04W68/005 ,  H04W72/10 ,  H04W72/12 ,  H04W72/1215 ,  H04W72/1247 ,  H04W76/34

Abstract: Methods and apparatus for minimizing scheduling collisions between networks. In one embodiment, the networks are substantially unsynchronized, and during hybrid network operation (e.g., LTE and CDMA 1X operation), a mobile device can place CDMA 1X voice calls while registered with the LTE network. However, since the LTE and CDMA 1X networks are not coordinated, the mobile device will experience scheduling collisions. In one variant, the LTE network accounts for predictable behaviors (such as CDMA 1X paging), and schedules low priority tasks during likely time interval conflicts. Consequently, even though the mobile device must tune away from the LTE network to check CDMA 1X pages, overall LTE network performance is minimally affected.

公开(公告)号：US20170279727A1

公开(公告)日：2017-09-28

申请号：US15078748

申请日：2016-03-23

Applicant: Apple Inc.

Inventor： Sree Ram Kodali ,  Shivesh Makharia ,  Longda Xing ,  Li Su

IPC: H04L12/853 ,  H04W72/12 ,  H04L1/18 ,  H04W28/02 ,  H04L29/06

CPC classification number: H04L47/2416 ,  H04L1/1812 ,  H04L1/1887 ,  H04L65/608 ,  H04W28/0236 ,  H04W28/0252 ,  H04W72/1242 ,  H04W72/1268

Abstract: This disclosure relates to techniques for handling voice and data under uplink limited conditions in a wireless communication system. A wireless device and a base station may establish a wireless communication link. Transmission time interval bundling (TTI-B) may be enabled for uplink communications between the wireless device and the base station. It may be determined that the wireless device is experiencing uplink limited conditions. One or more rules prioritizing a first type of data over a second type of data for uplink communications may be enabled based on TTI-B being enabled and the wireless device experiencing uplink limited conditions.