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公开(公告)号：US20230262574A1
公开(公告)日：2023-08-17
申请号：US17669868
申请日：2022-02-11
Applicant: Apple Inc.
Inventor： Arun Vijayakumari Mahasenan , Sarvesh Kumar Varatharajan , Venkateswara Rao Manepalli , Yaranama Venkata Ramana Dass
CPC classification number: H04W40/04 , H04W52/0216 , H04W80/02
Abstract: Embodiments disclosed herein relate to enabling direct wireless device-to-device communication between sleepy end devices (SEDs) of a mesh (e.g., Thread®) network. A router may forward packets between end devices of the mesh network. However, if the router is not available, SEDs may not be able to communicate with each other using a mesh protocol. Embodiments presented herein enable end devices of the mesh network to communicate directly, without a router. Some embodiments are directed to changing a role of an end device to temporarily act as a router for a particular target end device. The role change may be based on a trigger event and may be temporary until a target action is performed by the target end device. In some embodiments, the end devices continue to operate as SEDs and use coordinated sampled listening techniques to communicate via the mesh protocol.
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公开(公告)号：US20210344449A1
公开(公告)日：2021-11-04
申请号：US17374827
申请日：2021-07-13
Applicant: Apple Inc.
Inventor： Venkateswara Rao Manepalli , Sarma V. Vangala
Abstract: This disclosure relates to techniques for efficient sparse network resource usage and connection release procedures. According to some embodiments, a wireless device may utilize techniques for efficiently releasing a radio resource control (RRC) connection, including techniques that avoid or reduce the occurrence of random access procedures when out-of-sync with the network when the RRC connection is being released. In some embodiments, a wireless device may utilize techniques for efficiently sparsely using network uplink resources, including techniques that avoid or reduce the occurrence of random access procedures to regain timing alignment to perform uplink communication when out-of-sync with the network.
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公开(公告)号：US11101939B2
公开(公告)日：2021-08-24
申请号：US16802310
申请日：2020-02-26
Applicant: Apple Inc.
Inventor： Venkateswara Rao Manepalli , Sarma V. Vangala
Abstract: This disclosure relates to techniques for efficient sparse network resource usage and connection release procedures. According to some embodiments, a wireless device may utilize techniques for efficiently releasing a radio resource control (RRC) connection, including techniques that avoid or reduce the occurrence of random access procedures when out-of-sync with the network when the RRC connection is being released. In some embodiments, a wireless device may utilize techniques for efficiently sparsely using network uplink resources, including techniques that avoid or reduce the occurrence of random access procedures to regain timing alignment to perform uplink communication when out-of-sync with the network.
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公开(公告)号：US11064539B2
公开(公告)日：2021-07-13
申请号：US16784321
申请日：2020-02-07
Applicant: Apple Inc.
Inventor： Li Su , Sami M. Almalfouh , Venkateswara Rao Manepalli
IPC: H04W72/04 , H04W74/08 , H04W76/27 , H04H20/38 , H04J11/00 , H04L12/26 , H04W36/08 , H04W74/00 , H04W88/02 , H04W88/08
Abstract: Mechanisms enabling link-budget-limited (LBL) devices to more effectively perform random access may include: (1) broadcasting a Physical Random Access Channel (PRACH) configuration index (PCI) reserved for LBL devices; (2) configuring LBL devices to use a PCI that is offset from the conventional PCI of current cell; (3) configuring LBL devices to transmit PRACH messages using an alternative set of subframes, different from conventionally-defined subframe set; (4) configuring LBL devices to transmit PRACH messages on odd frames when the conventional PRACH configuration specifies even frames; (5) configuring LBL devices to generate and use extra PRACH preambles that are not used by non-LBL devices; (6) configuring LBL devices to use group B preambles while non-LBL devices are configured to use group A preambles; and (7) boosting power of a random access response message after an Nth random access failure with preamble conforming to an LBL-reserved pattern of preambles.
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公开(公告)号：US10764827B2
公开(公告)日：2020-09-01
申请号：US16135705
申请日：2018-09-19
Applicant: APPLE INC.
Inventor： Srinivasan Nimmala , Srirang A. Lovlekar , Venkateswara Rao Manepalli , Sami M. Almalfouh , Li Su , Jianxiong Shi , Daniel D. Schucker , Ajoy K. Singh , Vijay Venkataraman
Abstract: A device, system, and method uses a high power mode for a cellular connection. The method is performed at a device that is configured to establish a network connection to a network. The method includes detecting a number of at least one event that has occurred over a time period, the at least one event associated with operations used through the network connection, the at least one event indicative of a power to perform the operations that is greater than a predetermined power. When the number is at least a predetermined threshold, the method includes identifying the network connection as being in a high power state. The method includes activating settings when the network connection is in the high power state, the settings reducing a usage of the operations over the network connection.
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Patent Agency Ranking
公开(公告)号：US20200245119A1
公开(公告)日：2020-07-30
申请号：US16850164
申请日：2020-04-16
Applicant: Apple Inc.
Inventor： Tarik Tabet , Lydi Smaini , Ronald W. Dimpflmaier , Matthias Sauer , Venkateswara Rao Manepalli
Abstract: This disclosure relates to techniques for supporting narrowband device-to-device wireless communication, including possible techniques for performing discovery in an off grid radio system. A wireless device may obtain synchronization with a peer-to-peer communication group. The wireless device may determine the location of the wireless device within the peer-to-peer communication group based at least in part on signal strength of a synchronization signal used to obtain the synchronization. The wireless device may perform peer-to-peer discovery in the peer-to-peer communication group, such that time and frequency resources used by the wireless device to perform the peer-to-peer discovery are determined based at least in part on the location of the first wireless device within the peer-to-peer communication group.
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公开(公告)号：US10728937B2
公开(公告)日：2020-07-28
申请号：US15863701
申请日：2018-01-05
Applicant: Apple Inc.
Inventor： Tarik Tabet , Lydi Smaini , Venkateswara Rao Manepalli , Matthias Sauer , Ronald W. Dimpflmaier , Farouk Belghoul , Christian W. Mucke
Abstract: This disclosure relates to techniques for supporting narrowband device-to-device (D2D) wireless communication, including possible techniques for providing synchronization and master information block signals in an off grid radio system. A wireless device may provide D2D synchronization signals for a D2D communication group. The D2D synchronization signals may be provided using multiple frequency channels. The D2D synchronization signals may be provided on each respective frequency channel of the frequency channels during a respective portion of a D2D synchronization signal cycle in a sequential manner.
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公开(公告)号：US10728850B2
公开(公告)日：2020-07-28
申请号：US16135705
申请日：2018-09-19
Applicant: APPLE INC.
Inventor： Srinivasan Nimmala , Srirang A. Lovlekar , Venkateswara Rao Manepalli , Sami M. Almalfouh , Li Su , Jianxiong Shi , Daniel D. Schucker , Ajoy K. Singh , Vijay Venkataraman
Abstract: A device, system, and method uses a high power mode for a cellular connection. The method is performed at a device that is configured to establish a network connection to a network. The method includes detecting a number of at least one event that has occurred over a time period, the at least one event associated with operations used through the network connection, the at least one event indicative of a power to perform the operations that is greater than a predetermined power. When the number is at least a predetermined threshold, the method includes identifying the network connection as being in a high power state. The method includes activating settings when the network connection is in the high power state, the settings reducing a usage of the operations over the network connection.
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公开(公告)号：US20200178313A1
公开(公告)日：2020-06-04
申请号：US16784321
申请日：2020-02-07
Applicant: Apple Inc.
Inventor： Li Su , Sami M. Almalfouh , Venkateswara Rao Manepalli
Abstract: Mechanisms enabling link-budget-limited (LBL) devices to more effectively perform random access may include: (1) broadcasting a Physical Random Access Channel (PRACH) configuration index (PCI) reserved for LBL devices; (2) configuring LBL devices to use a PCI that is offset from the conventional PCI of current cell; (3) configuring LBL devices to transmit PRACH messages using an alternative set of subframes, different from conventionally-defined subframe set; (4) configuring LBL devices to transmit PRACH messages on odd frames when the conventional PRACH configuration specifies even frames; (5) configuring LBL devices to generate and use extra PRACH preambles that are not used by non-LBL devices; (6) configuring LBL devices to use group B preambles while non-LBL devices are configured to use group A preambles; and (7) boosting power of a random access response message after an Nth random access failure with preamble conforming to an LBL-reserved pattern of preambles.
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公开(公告)号：US10568066B2
公开(公告)日：2020-02-18
申请号：US16378605
申请日：2019-04-09
Applicant: Apple Inc.
Inventor： Li Su , Sami M. Almalfouh , Venkateswara Rao Manepalli , Srinivas Burugupalli , Srinivasan Nimmala , Vijay Kumar Ramamurthi , Stephan V. Schell
Abstract: Various mechanisms for paging link-budget-limited (LBL) devices are disclosed, including: (1) transmitting paging message with non-conventional paging identifier; (2) transmitting paging message(s) with increased power; (3) repeating transmission of paging message to support combining at receiver. Various mechanisms for UE device to signal LBL status are disclosed, including, transmitting status flag or special value of DRX cycle to network node as part of tracking area update and/or attach request. The network node informs a base station of the device's LBL status as part of a paging message. (The network node may, e.g., assign an S-RNTI to the LBL device from a reserved subset of S-RNTI space.) The base station invokes a paging enhancement mechanism when paging an LBL device. Alternatively, the base station may page UE devices without knowledge of LBL status, e.g., by counting paging attempts for a given UE, and boosting power after the Nth paging attempt.
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