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公开(公告)号：US10681643B2
公开(公告)日：2020-06-09
申请号：US16442730
申请日：2019-06-17
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 , H04B7/08 , 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.
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2.发明授权公开(公告)号：US10667158B2
公开(公告)日：2020-05-26
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
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.
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公开(公告)号：US20190124592A1
公开(公告)日：2019-04-25
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
CPC classification number: H04W52/028 , H04B7/0456 , H04W52/0206 , 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.
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4.发明申请公开(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.
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公开(公告)号：US09693281B2
公开(公告)日：2017-06-27
申请号：US14872065
申请日：2015-09-30
Applicant: Apple Inc.
Inventor： Karthik Chockalingam , Sai Sravan Bharadwaj Karri , Swaminathan Balakrishnan , Sachin J. Sane
IPC: H04W36/30
CPC classification number: H04W36/30 , H04W36/0055 , H04W36/0088
Abstract: Method and apparatus to trigger a handover of a mobile device from a serving cell to a neighbor cell based on signal quality are disclosed. The mobile device measures signal strength and signal quality for the serving cell. When the signal strength exceeds a network-defined threshold and the signal quality falls below a mobile device defined threshold, the mobile device measures at least one neighbor cell. When a neighbor cell exceeds the network-defined threshold for signal strength and also meets the mobile device defined signal quality threshold, the mobile device sends a measurement report to the serving cell to trigger the handover. The measurement report includes modified values that indicate the serving cell does not meet network-defined threshold values and that the neighbor cell outperforms the serving cell.
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Patent Agency Ranking
6.发明申请Fast Reselection from a Current Cell to a Higher-Priority Cell in Wireless Communication 审中-公开从当前小区到无线通信中的高优先级小区的快速重选公开(公告)号：US20160007241A1
公开(公告)日：2016-01-07
申请号：US14854307
申请日：2015-09-15
Applicant: Apple Inc.
Inventor： Sai Sravan Bharadwaj Karri
CPC classification number: H04W36/0022 , H04W36/0083 , H04W36/14 , H04W36/30 , H04W88/06
Abstract: A method and mechanism for operating user equipment to enable efficient reselection from a first cell conforming to a first wireless standard to a second cell conforming to a second wireless standard. The second standard may require a higher transmission rate for packet-switched data than the first standard. While camping on the first cell, the user equipment makes measurements of received power from the second cell. A reselection timer is started when a measurement is detected that is sufficiently strong. In response to an access state transition to a non-active protocol state (such as UMTS-PCH), the UE saves the timer value. When data becomes available for transmission, an additional measurement is made on the second cell, and reselection to the second cell may be performed immediately if the additional measurement and the saved timer value pass one or more reselection criteria.
Abstract translation: 一种用于操作用户设备以使得能够从符合第一无线标准的第一小区到符合第二无线标准的第二小区的有效重新选择的方法和机制。 第二标准可能需要比第一标准更高的分组交换数据传输速率。 当在第一小区上驻留时，用户设备对来自第二小区的接收功率进行测量。 当检测到足够强的测量时，开始重新选择定时器。 响应于到非活动协议状态（例如UMTS-PCH）的接入状态转换，UE保存定时器值。 当数据可用于发送时，对第二小区进行附加测量，如果附加测量和保存的定时器值通过一个或多个重选标准，则可以立即执行对第二小区的重选。
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公开(公告)号：US20150350976A1
公开(公告)日：2015-12-03
申请号：US14291777
申请日：2014-05-30
Applicant: Apple Inc.
Inventor： Sree Ram Kodali , Jianxiong Shi , Jinghua Ling , Longda Xing , Madhusudan Chaudhary , Navid Damji , Sai Sravan Bharadwaj Karri , Shivesh Makharia
Abstract: Adjusting search and measurement periodicity based on device motion. A wireless device may camp on a serving cell. Signal strength, signal quality, and signal to noise ratio of the serving cell may be measured. If each is above a respective threshold, and if the wireless device is stationary, the periodicities at which searches and neighbor cell measurements are performed may be adjusted (e.g., increased) from baseline periodicities.
Abstract translation: 基于设备运动调整搜索和测量周期。 无线设备可以驻留在服务小区上。 可以测量服务小区的信号强度，信号质量和信噪比。 如果每个高于相应的阈值，并且如果无线设备是静止的，则可以从基线周期性调整（例如，增加）搜索和相邻小区测量的周期。
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公开(公告)号：US12185123B2
公开(公告)日：2024-12-31
申请号：US17572145
申请日：2022-01-10
Applicant: Apple Inc.
Inventor： Ioannis Pefkianakis , Madhusudan Chaudhary , Chia-Feng Lin , Satish Doraiswamy , Prashant H. Vashi , Sai Sravan Bharadwaj Karri , Guillaume Monghal
Abstract: A wireless device is configured to select a beam and/or an antenna based on detection a detected position and/or orientation of the device relative to a remote device. The device obtains motion data indicating a change in position or orientation of the wireless device. The device determines its pose relative to the remote device. The device accesses a coverage map that associates, for each potential pose for the device with respect to the remote device: an antenna for communicating with the remote device and/or a beam for communicating with the remote device. The device selects a particular antenna and/or a particular beam for communicating with the remote device; and causes transmission or reception of data to or from the remote device by the particular antenna and/or the particular beam.
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公开(公告)号：US20220225118A1
公开(公告)日：2022-07-14
申请号：US17572145
申请日：2022-01-10
Applicant: Apple Inc.
Inventor： Ioannis Pefkianakis , Madhusudan Chaudhary , Chia-Feng Lin , Satish Doraiswamy , Prashant H. Vashi , Sai Sravan Bharadwaj Karri , Guillaume Monghal
Abstract: A wireless device is configured to select a beam and/or an antenna based on detection a detected position and/or orientation of the device relative to a remote device. The device obtains motion data indicating a change in position or orientation of the wireless device. The device determines its pose relative to the remote device. The device accesses a coverage map that associates, for each potential pose for the device with respect to the remote device: an antenna for communicating with the remote device and/or a beam for communicating with the remote device. The device selects a particular antenna and/or a particular beam for communicating with the remote device; and causes transmission or reception of data to or from the remote device by the particular antenna and/or the particular beam.
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公开(公告)号：US10952147B2
公开(公告)日：2021-03-16
申请号：US16869380
申请日：2020-05-07
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 , H04B7/08 , 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.
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