公开(公告)号：US20210385879A1

公开(公告)日：2021-12-09

申请号：US17289143

申请日：2019-10-22

申请人： IDAC Holdings, Inc.

发明人： Nagi Mahalingam ,  Anantharaman Balasubramanian ,  Ravikumar V. Pragada ,  Faris Alfarhan ,  Yugeswar Deenoo

IPC分类号： H04W74/08 ,  H04W72/12

摘要： Method, apparatus and systems are disclosed. In one representative embodiment, a method may be implemented by a wireless transmit/receive unit (WTRU) for communication via a network access point (NAP). The method may include the WTRU receiving from the NAP a set of preambles and corresponding propagation delay related thresholds and determining propagation delay related information associated with a distance between the WTRU and the NAP or a location in a coverage of the NAP. The method may further include selecting a subset of preambles from the set of preambles based on the determined propagation delay related information, randomly selecting a preamble from the selected subset of preambles, and sending the randomly selected preamble to the NAP.

公开(公告)号：US20220070836A1

公开(公告)日：2022-03-03

申请号：US17414930

申请日：2019-12-17

申请人： IDAC HOLDINGS, INC.

发明人： Anantharaman Balasubramanian ,  Tanbir Haque ,  Ravikumar Pragada ,  Hussain Elkotby ,  Patrick Cabrol ,  Marian Rudolf

IPC分类号： H04W72/04 ,  H04J11/00 ,  H02J50/20 ,  H02J50/80 ,  H02J50/00

摘要： A base transmission signal and an auxiliary transmission signal may be used to (e.g., concurrently) improve a harvesting efficiency of an energy receiver while maintaining a prespecified performance level of an information receiver. An auxiliary transmission signal may be constructed. The construction of the auxiliary transmission signal may be signaled. An auxiliary transmission signal may be adapted. The adaptation of the auxiliary transmission signal may be signaled. An impact of auxiliary transmission signals on an information receiver's performance may be mitigated. One or more narrowband energy harvesting (EH) signals may be used, for example to provide a high peak to average power ratio (PARR) for EH devices (e.g., without significantly impacting overall transmitted signal PARR) characteristics. One or more narrowband auxiliary signals may be used, for example to enhance the PARR characteristics of an information signal sub-band.

公开(公告)号：US20210376915A1

公开(公告)日：2021-12-02

申请号：US17290311

申请日：2019-10-30

申请人： IDAC Holdings, Inc.

发明人： Nagi Mahalingam ,  Anantharaman Balasubramanian ,  Ravikumar Pragada ,  Dylan Watts ,  Yugeswar Deenoo

IPC分类号： H04B7/185 ,  H04B7/06 ,  H04W16/28 ,  H04B17/309 ,  H04W72/08

摘要： A wireless transmit/receive unit (WTRU) may identify a plurality of candidate satellite constellations. The WTRU may determine an elevation angle and/or an orbit associated with each of the plurality of candidate satellite constellations. The WTRU may select a satellite constellation from the plurality of candidate constellations for sell selection. The WTRU may identify a plurality of candidate beams associated with the selected satellite constellation. The WTRU may determine an RSRP/RSRQ for each of the plurality of candidate beams. The WTRU may determine a weighted ranking of the plurality of candidate beams. The WTRU may determine the weighted ranking using the determined RSRP/RSRQ, prevailing load intensities, elevation angle, dwelling duration, link switch probability, and/or a quality of service (QoS). The WTRU may select a beam from the plurality of candidate beams for cell selection. The WTRU may select the beam based on the weighted ranking.

公开(公告)号：US20220070766A1

公开(公告)日：2022-03-03

申请号：US17414159

申请日：2019-12-17

申请人： IDAC HOLDINGS, INC.

发明人： Tanbir Haque ,  Hussain E. Elkotby ,  Ravikumar V. Pragada ,  Patrick Cabrol ,  Anantharaman Balasubramanian ,  Marian Rudolf ,  William E. Lawton ,  Muhammad U. Fazili

IPC分类号： H04W48/18 ,  H04W52/02 ,  H04W24/08 ,  H04W36/08

摘要： Approaches for idle mode operations for wireless transmit/receive units (WTRUs) with zero-energy (ZE) receivers are disclosed herein. A WTRU operating in idle mode, may receive using the main transceiver over a Uu interface, an energy harvesting (EH) configuration for use over a ZE air interface. The main transceiver may be turned off, and the ZE receiver as part of a ZE idle mode operation, may detect, over the ZE air interface, and harvest energy from ZE reference signals. The WTRU may calculate an amount of energy harvested from the ZE reference signals over a first time period. The WTRU may calculate a ZE idle mode operation energy consumption over the first time period. On a condition that the ZE idle mode operation energy consumption is greater than the harvested energy, the main transceiver may be turned on and the WTRU may enter a Uu interface idle mode operation.

公开(公告)号：US20210029658A1

公开(公告)日：2021-01-28

申请号：US17044586

申请日：2019-04-03

申请人： IDAC HOLDINGS, INC.

发明人： Nagi Mahalingam ,  Anantharaman Balasubramanian ,  Mihaela Beluri ,  Ravikumar V. Pragada ,  Mahmoud Taherzadeh Boroujeni ,  Shahrokh Nayeb Nazar ,  Seyed Mohsen Hosseinian ,  Frank La Sita

IPC分类号： H04W56/00 ,  H04W74/08 ,  H04B7/185

摘要： Methods, systems, and devices for addressing timing advance (TA) in non-terrestrial network communication is disclosed herein. A wireless transmit and receive unit (WTRU) may receive system information from a base station attached to an airborne or spaceborne vehicle that indicates a physical random access channel (PRACH) resource. The WTRU may determine a timing offset based on a plurality of information, such as the location information and the system information. The WTRU may transmit a preamble using the timing offset via the PRACH resource. The base station may receive the preamble and send a random access response (RAR) that includes, for example, a TA command. The WTRU may receive the RAR including the TA command and combine the timing offset with the TA command to determine an actual TA, after which the WTRU may use the actual TA for uplink transmissions.

公开(公告)号：US20220225402A1

公开(公告)日：2022-07-14

申请号：US17610404

申请日：2020-05-16

申请人： IDAC Holdings, Inc.

发明人： Hussain Elkotby ,  Anantharaman Balasubramanian ,  Marian Rudolf ,  Tanbir Haque ,  Patrick Cabrol ,  Ravikumar Pragada

IPC分类号： H04W74/00 ,  H02J50/00 ,  H02J50/20 ,  H02J50/40 ,  H04L47/26 ,  H04W28/02

摘要： Methods and apparatus for waveform design and signaling for energy harvesting (EH) in a wireless network are disclosed. In an example, a method includes receiving a control message including a contention-based backscattering configuration, determining parameters for transmitting a feedback within a contention-based transmission window based on the contention-based backscattering configuration, detecting feedback transmissions sent by other WTRUs within the contention-based transmission window, wherein each feedback transmission includes an EH capability indication, determining whether an EH capability detected from the feedback transmissions matches the EH capability of the WTRU, if a matched EH capability is detected from the feedback transmissions within the contention-based transmission window, delaying a transmission of the feedback, and if no matched EH capability is detected from the feedback transmissions within the contention-based transmission window, transmitting the feedback using the determined parameters.

公开(公告)号：US20220070775A1

公开(公告)日：2022-03-03

申请号：US17414210

申请日：2019-12-17

申请人： IDAC HOLDINGS, INC.

发明人： Hussain E. Elkotby ,  Ravikumar V. Pragada ,  Tanbir Haque ,  Patrick Cabrol ,  Anantharaman Balasubramanian ,  Marian Rudolf ,  William E. Lawton

IPC分类号： H04W52/02

摘要： A method for use in a Wireless Transmit/Receive Unit (WTRU). The method comprises: receiving, using an active receiver, system information comprising a first system information set, wherein the first system information set is currently valid for the WTRU; storing the system information; deactivating the active receiver and activating a passive receiver; determining whether a difference between a first parameter in the BSSI and a first parameter in the first system information set is greater than a threshold value, wherein on a condition that the difference is greater than the threshold value, reactivating the active receiver to receive a second system information set as a currently valid system information set for the WTRU.

公开(公告)号：US20220248432A1

公开(公告)日：2022-08-04

申请号：US17610396

申请日：2020-05-16

申请人： IDAC Holdings, Inc.

发明人： Anantharaman Balasubramanian ,  Hussain Elkotby ,  Marian Rudolf ,  Tanbir Haque ,  Patrick Cabrol ,  Ravikumar Pragada

IPC分类号： H04W72/12

摘要： Method and apparatus for a WTRU to harvest energy from uplink signals of other WTRUs in a wireless network are disclosed. In an example, a method includes sending a message indicating resources and capability of energy harvesting (EH) from sets of resources of the plurality of resources; receiving one or more SRS super-sets, each SRS super-set being associated with a group of other WTRUs and at least one set of resources of the plurality of resources; determining a mapping between a receive beam and an SRS super-set; receiving uplink transmission patterns each being associated with an SRS super-set; selecting a receive beam from a set of receive beams based on the received uplink transmission patterns; and harvesting RF energy from uplink transmissions of one or more groups of other WTRUs using at least the selected receive beam and the received uplink transmission patterns.

公开(公告)号：US20220038136A1

公开(公告)日：2022-02-03

申请号：US17312130

申请日：2019-12-17

申请人： IDAC HOLDINGS, INC.

发明人： Patrick Cabrol ,  Tanbir Hague ,  Ravikumar Pragada ,  Marian Rudolf ,  Anantharaman Balasubramanian ,  Hussain Elkotby

IPC分类号： H04B5/00 ,  H04B17/336 ,  H04B5/02 ,  H04B1/69

摘要： A resonance magnetic coupling (RMC) communication may be enabled between devices. A device may use a discovery mechanism to transmit and exchange information. A device may use the discovery mechanism to establish a RMC communication channel and may determine its parameterization. A device using a RMC communication may transmit a discovery signal to determine channelization and/or properties of the RMC link. The discovery signal may be generated in the form of a beacon transmission. A signal sequence may be employed for a discovery signal. A device using a RMC communication may transmit a sequence of beacon or discovery signals to track characteristics of the RMC link. Beacon scheduling may be used for RMC communications, and the communication channel may not be static and may be a function of distance and orientation. A device using a RMC communication may sense the channel for potential beacon or sequence signals from other devices.