公开(公告)号：US10341956B2

公开(公告)日：2019-07-02

申请号：US16119801

申请日：2018-08-31

Applicant: Apple Inc.

Inventor： Tianyan Pu ,  Sai Sravan Bharadwaj Karri ,  Wei Zhang ,  Swaminathan Balakrishnan ,  Xiantao Sun ,  Beibei Wang ,  Manish G. Vemulapalli ,  Jia Tang ,  Sami M. Almalfouh ,  Zhu Ji ,  Sachin J. Sane

IPC: H04W52/02 ,  H04B7/0456 ,  H04W88/06

Abstract: This disclosure relates to techniques for opportunistically depowering receiver chains of a wireless device. Based on control information, a device may determine whether the current number of active receiver chains can be reduced while maintaining a target achievable code rate for a period of data reception associated with the control information. Additionally, the device may generate and use a lookup table to determine whether to depower receiver chains, and which receiver chains to depower.

公开(公告)号：US10334611B2

公开(公告)日：2019-06-25

申请号：US15612726

申请日：2017-06-02

Applicant: APPLE INC.

Inventor： Vijay Kumar Ramamurthi ,  Vijay Venkataraman ,  Swaminathan Balakrishnan ,  Tarik Tabet ,  Sarma Vangala ,  Sree Ram Kodali ,  Rafael Rivera-Barreto ,  Samy Khay-Ibbat

IPC: H04B17/309 ,  H04W52/36 ,  H04W52/24 ,  H04W72/08 ,  H04L5/00

Abstract: Described is a user equipment (UE) that is connected to a network component, the user equipment and the network component configured with a carrier aggregation functionality. The UE performs a method that includes determining a primary component carrier and at least one secondary component carrier associated with the carrier aggregation functionality of the user equipment, determining a component carrier quality measurement (CQM) metric for each of the component carriers, when an uplink data packet is capable of being transmitted over the secondary component carrier, selecting one of the primary component carrier and the at least one secondary component carrier based on the CQM metrics, generating measurement data indicative of the selected component carrier to increase a probability to transmit the uplink data packet over the selected component carrier and transmitting the measurement data to the network component.

公开(公告)号：US20190124532A1

公开(公告)日：2019-04-25

申请号：US16229957

申请日：2018-12-21

Applicant: Apple Inc.

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

IPC: H04W24/08 ,  H04W76/10 ,  H04B17/336 ,  H04W56/00

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：US09935859B2

公开(公告)日：2018-04-03

申请号：US14870328

申请日：2015-09-30

Applicant: Apple Inc.

Inventor： Sarma V. Vangala ,  Tarik Tabet ,  Swaminathan Balakrishnan ,  Yuchul Kim ,  Navid Damji ,  Sreevalsan Vallath ,  Samy Khay-Ibbat ,  Syed Aon Mujtaba

IPC: H04W24/00 ,  H04L12/26 ,  H04W24/06 ,  H04W24/08 ,  H04B17/309

CPC classification number: H04L43/0888 ,  H04B17/309 ,  H04L43/10 ,  H04W24/06 ,  H04W24/08

Abstract: Loading estimation of 3GPP networks. One or more metrics relating to a cell of a 3GPP network may be measured. Loading of the cell may be estimated based on the one or more metrics. The metrics may include metrics measured, estimated, or derived at multiple layers, possibly including one or more of physical layer, radio link control layer, radio resource control layer, or application layer metrics.

公开(公告)号：US09655008B2

公开(公告)日：2017-05-16

申请号：US14503087

申请日：2014-09-30

Applicant: APPLE INC.

Inventor： Swaminathan Balakrishnan ,  Sarma V. Vangala

IPC: H04W4/00 ,  H04W36/00 ,  H04W8/22 ,  H04W48/18 ,  H04W60/00

CPC classification number: H04W36/0022 ,  H04W8/22 ,  H04W36/0083 ,  H04W48/18 ,  H04W60/00

Abstract: A user equipment (“UE”) that performs methods to connect to multiple radio access networks (RAN) including a home network RANs and roaming RANs to perform communications. An exemplary method performed by a UE initially connected to a Long Term Evolution radio access network (LTE-RAN) of a home network and registered with a voice over LTE (VoLTE) service of the home network to perform voice communications via the LTE-RAN, includes detecting a service disrupting event preventing VoLTE communication with the LTE-RAN, deregistering from the VoLTE service of the home network, scanning for available bands in the LTE-RAN of the home network and while scanning for the available bands in the LTE-RAN of the home network, connecting to a further radio access network (RAN) of the home network that allows circuit-switched communications with the home network, wherein the UE performs voice communications as circuit-switched communications via the further RAN.

公开(公告)号：US20170078934A1

公开(公告)日：2017-03-16

申请号：US15160498

申请日：2016-05-20

Applicant: Apple Inc.

Inventor： Swaminathan Balakrishnan ,  Prateek Sharma ,  Deepankar Bhattacharjee ,  Sreevalsan Vallath

IPC: H04W36/00 ,  H04L1/20 ,  H04W36/30 ,  H04W52/36 ,  H04W48/12 ,  H04W36/04

CPC classification number: H04L1/203 ,  H04B17/309 ,  H04W36/0083 ,  H04W36/00837 ,  H04W36/04 ,  H04W36/30 ,  H04W48/12 ,  H04W48/20 ,  H04W52/20 ,  H04W52/365 ,  H04W84/045 ,  H04W88/06

Abstract: This disclosure relates to techniques for enabling a user equipment (UE) to determine which cell to attach to in a heterogeneous network (HetNet). The UE may determine, based on the quality of the downlink (DL) channel and/or on the type of traffic between the UE and a current base station, whether to attach to a small cell base station or an overlay macro base station in the cellular network. Particularly, the UE may determine whether to use a received mobility offset during cell reselection in response to a measured quality of the DL channel.

Abstract translation: 本公开涉及使用户设备（UE）能够确定要连接到异构网络（HetNet）中的哪个小区的技术。 UE可以基于下行链路（DL）信道的质量和/或UE与当前基站之间的业务类型来确定是否附加到小型基站或覆盖宏基站中的覆盖宏基站 蜂窝网络。 具体地，UE可以响应于DL信道的测量质量来确定在小区重选期间是否使用接收到的移动性偏移。

公开(公告)号：US09549359B2

公开(公告)日：2017-01-17

申请号：US15071112

申请日：2016-03-15

Applicant: Apple Inc.

Inventor： Sarma V. Vangala ,  Swaminathan Balakrishnan ,  Wael S. Barakat ,  Navid Damji ,  Tarik Tabet

IPC: H04W36/32 ,  H04W52/02 ,  H04W36/00 ,  H04W24/10 ,  H04W76/02 ,  H04W88/06

CPC classification number: H04W36/32 ,  H04W24/10 ,  H04W36/0061 ,  H04W36/0083 ,  H04W36/0088 ,  H04W52/0225 ,  H04W52/0254 ,  H04W76/15 ,  H04W88/06 ,  Y02D70/122 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264

Abstract: A method for reducing power consumption by a wireless communication device is disclosed. The method can include the wireless communication device performing a first measurement of an alternative cell during a first measurement gap; sending a first measurement report generated based on the first measurement to the serving cell; storing the first measurement report; determining a mobility state of the wireless communication device; comparing the mobility state to a mobility threshold criterion; resending the first measurement report to the serving network as a report for a second measurement gap in an instance in which the mobility state satisfies the mobility criterion; and performing a second measurement of the alternative cell during the second measurement gap and sending a second measurement report generated based on the second measurement to the serving cell in an instance in which the mobility state does not satisfy the mobility threshold criterion.

Abstract translation: 公开了一种降低无线通信设备的功耗的方法。 该方法可以包括在第一测量间隙期间执行替代单元的第一测量的无线通信设备; 向所述服务小区发送基于所述第一测量生成的第一测量报告; 存储第一测量报告; 确定所述无线通信设备的移动性状态; 将移动性状态与移动性阈值标准进行比较; 在移动性状态满足移动性准则的情况下，将第一测量报告重新发送到服务网络作为用于第二测量间隙的报告; 以及在所述第二测量间隙期间执行所述备选小区的第二测量，并且在所述移动性状态不满足所述移动性阈值准则的情况下，将基于所述第二测量生成的第二测量报告发送给所述服务小区。

公开(公告)号：US20160360558A1

公开(公告)日：2016-12-08

申请号：US15143739

申请日：2016-05-02

Applicant: Apple Inc.

Inventor： Sarma V. Vangala ,  David Boettger ,  Vijay Kumar Ramamurthi ,  Venkateswara Rao Manepalli ,  Srinivas Pasupuleti ,  Swaminathan Balakrishnan ,  Samy Khay-Ibbat ,  Tarik Tabet

IPC: H04W76/02 ,  H04W72/04 ,  H04W52/02 ,  H04W76/04

CPC classification number: H04W76/02 ,  H04W28/02 ,  H04W28/20 ,  H04W52/0209 ,  H04W72/1252 ,  H04W76/10 ,  H04W76/18 ,  H04W76/28 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/22 ,  Y02D70/24 ,  Y02D70/26

Abstract: This disclosure relates to techniques for UEs (including link budget limited UEs) to improve communications performance with a cellular network. A UE may be configured to provide a request (for a first process executed by the UE) for a high-bandwidth connection to a base station of a cellular network during a first RRC connection. In some embodiments, the RRC connection is established by another process. In some embodiments, the UE is configured to receive signaling from the base station indicating that the base station cannot satisfy the high-bandwidth connection request and the UE is configured not to send or receive data for the high-bandwidth connection during the first RRC connection in response to the signaling. In some embodiments, the UE is configured to re-send the request on a second, subsequent RRC connection that is not established by the first process. In some embodiments, the UE is configured to opportunistically re-send the request on subsequent RRC connections established by one or more other processes until the base station is able to grant the request.

Abstract translation: 本公开涉及用于UE（包括链路预算有限的UE）以改善与蜂窝网络的通信性能的技术。 UE可以被配置为在第一RRC连接期间提供针对蜂窝网络的基站的高带宽连接的请求（对于由UE执行的第一进程）。 在一些实施例中，RRC连接由另一进程建立。 在一些实施例中，UE被配置为从基站接收指示基站不能满足高带宽连接请求的信令，并且UE被配置为在第一RRC连接期间不发送或接收高带宽连接的数据 响应信令。 在一些实施例中，UE被配置为在第一进程未建立的第二后续RRC连接上重新发送请求。 在一些实施例中，UE被配置为在由一个或多个其他进程建立的后续RRC连接上机会地重新发送请求，直到基站能够授予该请求。

公开(公告)号：US09479315B2

公开(公告)日：2016-10-25

申请号：US14503230

申请日：2014-09-30

Applicant: APPLE INC.

Inventor： Samy Khay-Ibbat ,  Tarik Tabet ,  Sarma V. Vangala ,  Swaminathan Balakrishnan ,  Rafael L. Rivera-Barreto ,  Sree Ram Kodali

IPC: H04L5/00 ,  H04W76/04

CPC classification number: H04L5/0057 ,  H04L5/001 ,  H04W72/1268 ,  H04W76/28 ,  H04W84/042 ,  H04W88/02

Abstract: Methods that are performed by a user equipment (UE) and corresponding methods of base stations that allow a UE to determine whether the UE is in a carrier aggregation enabled or disabled state. One exemplary embodiment of a method performed by a UE determines a first artificial value for a first parameter and a second artificial value for a power headroom (PHR) for a secondary component carrier (SCC), the first and second artificial values being substantially low relative to a configuration of the network, generates an artificial report including the first and second artificial values, transmits the artificial report to a primary cell providing a primary component carrier (PCC) and receives an indication that the UE is placed in a carrier aggregation disabled state.

Abstract translation: 由用户设备（UE）执行的方法和允许UE确定UE是否处于承载聚合启用或禁用状态的基站的相应方法。 由UE执行的方法的一个示例性实施例为次要分量载波（SCC）的功率余量（PHR）确定第一参数的第一人造值和第二人造值，第一和第二人造值相对较低 对于网络的配置，生成包含第一人造值和第二人工值的人工报告，将人工报告发送给提供主要分量载波（PCC）的主小区，并且接收到UE处于载波聚合禁止状态的指示 。

公开(公告)号：US20160262178A1

公开(公告)日：2016-09-08

申请号：US15015613

申请日：2016-02-04

Applicant: Apple Inc.

Inventor： Sarma V. Vangala ,  Tarik Tabet ,  Rafael L. Rivera-Barreto ,  Swaminathan Balakrishnan ,  Samy Khay-Ibbat

IPC: H04W72/14 ,  H04W72/12

CPC classification number: H04W72/14 ,  H04W72/1268 ,  H04W72/1289

Abstract: Embodiments described herein relate to an apparatus, system, and method for providing aperiodic uplink grants to a UE for aperiodic communications from the UE to a base station. In some embodiments, the UE may be configured to communicate information to the base station, which may be useable by the base station to determine an uplink grant schedule for subsequent communications between the base station and the UE. This uplink grant schedule may be aperiodic, i.e., the uplink grants may be issued at non-uniform intervals of time. The UE may receive the uplink grants from the base station according to the uplink grant schedule. The UE may transmit uplink communications to the base station in response to the received uplink grants.

Abstract translation: 本文描述的实施例涉及一种用于向UE提供非周期性上行链路授权以用于从UE到基站的非周期性通信的装置，系统和方法。 在一些实施例中，UE可以被配置为向基站传送信息，基站可以由基站来确定用于基站和UE之间的后续通信的上行链路授权调度。 该上行链路授权调度可以是非周期性的，即，可以以非均匀的时间间隔发布上行链路许可。 UE可以根据上行链路授权调度从基站接收上行链路许可。 响应于所接收的上行链路许可，UE可以向基站发送上行链路通信。