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公开(公告)号：US20200008221A1
公开(公告)日：2020-01-02
申请号：US16483087
申请日：2018-02-01
发明人： Ryan KEATING , Rapeepat RATASUK , Nitin MANGALVEDHE , Jun TAN , Jie CHEN , Tzu-Chung HSIEH
摘要： An uplink non-orthogonal multiple access for narrowband machine type communication used for the deployment of Internet of Things (IoT) interconnected devices where one or more user equipment are configured for uplink transmission with one or more uplink time-frequency regions for enhanced Machine Type Communication Non-Orthogonal Multiple Access. The configuring is based on defining and signaling one or more signal thresholds and one or more of a resource assignment, a starting subframe periodicity, a starting subframe offset, a time duration in each period, a demodulation reference signal cyclic shift assignment, orthogonal cover code assignment, and interleaver assignment.
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公开(公告)号：US20240349217A1
公开(公告)日：2024-10-17
申请号：US18579393
申请日：2021-08-06
发明人： Gilsoo LEE , Tzu-Chung HSIEH , Jingyuan SUN
CPC分类号： H04W56/0045 , H04W56/0035 , H04W84/06
摘要： This disclosure presents methods to compensate for a phase drift in an uplink communication signal between a user equipment (UE) and a non-terrestrial network (NTN) node. Due to the change rate of velocity of the UE relative to the NTN node, a transmission signal can drift causing demodulation errors at the receiver. The UE can apply compensation processes to the transmission signal so that the received signal is closer to the original transmitted signal as compared to a non-compensated signal. Alternatively, the NTN node can apply compensation process to modify the reference phase to be closer to the phase of the received signal in the demodulation process. The location of the UE, as well as its relative elevation, can be used with the NTN node's location, to generate the compensation information. The compensation can be applied on a symbol-by-symbol basis or to a group of M symbols.
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公开(公告)号：US20230163834A1
公开(公告)日：2023-05-25
申请号：US17532153
申请日：2021-11-22
发明人： Gilsoo LEE , Tzu-Chung HSIEH , Jie CHEN
IPC分类号： H04B7/185
CPC分类号： H04B7/18504
摘要： Systems, methods, apparatuses, and computer program products for switching beams on/off for high altitude platform stations (HAPS) are provided. One method may include selecting a beam on/off pattern from one or more beam on/off patterns for a high altitude platform station (HAPS) and a rotation period for the beam on/off pattern, based at least on flight information of the high altitude platform station (HAPS) and user equipment (UE) traffic load information. The method may also include transmitting, to one or more user equipment (UEs), an indication of beam switching on/off operation comprising at least one of the selected beam on/off pattern, a pattern rotation speed, and a reference time slot for a start of the selected beam on/off pattern. The method may then include initiating the beam switching on/off operation.
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公开(公告)号：US20240251370A1
公开(公告)日：2024-07-25
申请号：US18558005
申请日：2021-05-08
发明人： Gilsoo LEE , Tzu-Chung HSIEH , Ping YUAN , Mads LAURIDSEN
CPC分类号： H04W56/0045 , H04W64/006 , H04W84/06
摘要： Disclosed is a method comprising defining an indexed table that defines, for an elevation angle of a terminal device with a serving satellite, a setting that defines durations of segments comprised in a transmission period, wherein the segments comprise at least one transmission segment and at least one segment for timing advance adjustment, and wherein the indexed table comprises a plurality of ranges of elevation angles with corresponding settings, obtaining an indication regarding an index that defines the setting that is applicable to the elevation angle of the terminal device, scheduling a transmission, wherein the transmission is an uplink transmission, and receiving the transmission from the terminal device according to the setting that is applicable to the elevation angle of the terminal device.
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公开(公告)号：US20230296720A1
公开(公告)日：2023-09-21
申请号：US18123579
申请日：2023-03-20
发明人： Konstantinos MANOLAKIS , Tzu-Chung HSIEH , Frank FREDERIKSEN , Jeroen WIGARD , Rafhael MEDEIROS DE AMORIM
CPC分类号： G01S5/0249 , H04W64/00 , H04B7/18513 , G01S5/14
摘要： Aspects and embodiments relate to an apparatus and method for evaluating location of a terrestrial network node in a non-terrestrial network. In particular, one aspect provides an apparatus, comprising means for receiving an indication of propagation delay between a terrestrial network node and a non-terrestrial node in a non-terrestrial wireless communication network; means for receiving an indication of location of the non-terrestrial node; and means for evaluating location of the terrestrial network node in dependence upon the received indication of propagation delay between the terrestrial network node and the non-terrestrial node, and the indication of location of the non-terrestrial node. A further aspect provides a method of evaluating location of a terrestrial network node, and a computer program product operable, when executed on a computer, to perform that method. Aspects and embodiments recognise that having a knowledge of gNB and NTN-GW location in a non-terrestrial network can allow UE to simplify procedures in relation to the updating and tracking of forward link delay. Since it has been agreed that a network will not directly provide the gNB and/or NTN-GW location to UE, due to security and privacy reasons in some countries, apparatus can be configured to perform methods according to which a UE is operable to calculate or obtain information which can assist its ongoing operation and reduce an ongoing need to decode SIB in support of calculation of an appropriate Uplink timing advance (TA) to apply in relation to communications exchanged with a network.
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公开(公告)号：US20220210612A1
公开(公告)日：2022-06-30
申请号：US17604120
申请日：2020-04-28
发明人： Ryan KEATING , Rapeepat RATASUK , Tzu-Chung HSIEH
摘要： Apparatus, methods and computer program products for user equipment positioning solutions and related signalling. An apparatus comprising at least one processor and at least one memory including computer program code, the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus to at least send (550), to a network node of a communication network, at least one signaling configuration with at least one set periodicity, wherein the at least one signaling configuration is for use at the network node in calculating at least position information for relaying to the communication network at least for positioning support of the apparatus, and receive (570) the positioning support from the communication network in response to the at least one signaling configuration.
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