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公开(公告)号：US11503649B2
公开(公告)日：2022-11-15
申请号：US16900466
申请日：2020-06-12
申请人： Ahmad Jalali
发明人： Ahmad Jalali
摘要： The User Equipment (UE) initiates initial access by transmitting an uplink reference signal on at least one UE beam. Each Base Station (BS) carries out a spatial search of detected uplink reference signals, estimates the Angle of Arrival (AoA) of the uplink reference signals, forms a dedicated downlink beam toward the UE at the estimated AoA, and sends an acknowledgement for the uplink reference signal on the dedicated downlink beam. The UE carries out a spatial search of the received acknowledgement, and identifies the UE beam angular pointing position, from which receives the acknowledgement with the highest signal quality, as the UE beam boresight toward the BS. The UE sends a connection setup request message to the BS on the identified UE beam boresight. The uplink reference signals and acknowledgements comprise a single preamble, effectively carrying one bit of information, or carry a small payload.
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公开(公告)号：US20210392688A1
公开(公告)日：2021-12-16
申请号：US16900466
申请日：2020-06-12
申请人： Ahmad Jalali
发明人： Ahmad Jalali
摘要： The User Equipment (UE) initiates initial access by transmitting an uplink reference signal on at least one UE beam. Each Base Station (BS) carries out a spatial search of any detected uplink reference signals, estimates the Angle of Arrival (AoA) of the uplink reference signals, forms a dedicated downlink beam pointed toward the UE at the estimated AoA, and sends an acknowledgement for the uplink reference signal on the dedicated downlink beam. The UE carries out a spatial search of the received acknowledgement, and identifies the UE beam angular pointing position, from which receives the acknowledgement with the highest signal quality, as the UE beam boresight toward the BS. The UE sends a connection setup request message to the BS on the identified UE beam boresight. The uplink reference signals and acknowledgements may comprise of only a single preamble, effectively carrying one bit of information, or carry a small payload.
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公开(公告)号：US20240236963A9
公开(公告)日：2024-07-11
申请号：US18383224
申请日：2023-10-24
申请人： Ahmad Jalali
发明人： Ahmad Jalali
IPC分类号： H04W72/0453 , H04W72/541
CPC分类号： H04W72/0453 , H04W72/541
摘要： A communications apparatus comprises of one or more Active Antenna Units (AAUs) collocated in the same sector, and a processor. The processor de-multiplexes a data packet stream into at least two sub-streams, each sub-stream is transmitted on a different medium path. Each medium path is comprised of frequency channels, antenna polarizations and AAUs. A scheduler assigns data packets to different medium paths. The apparatus transmits on at least one frequency band, each frequency band is divided into a set of one or more frequency channels, at least one frequency channel of a frequency band is assigned to at least one AAU. A frequency channel is assigned to only one or to both antenna polarizations of the same AAU. The apparatus determines if an extraneous signal is present on a frequency channel and stops transmitting on the entire or part of the frequency channel where extraneous signal is detected.
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公开(公告)号：US20210392558A1
公开(公告)日：2021-12-16
申请号：US16900572
申请日：2020-06-12
申请人： Ahmad Jalali
发明人： Ahmad Jalali
摘要： A User Equipment (UE) measures the signal quality of a dedicated downlink reference signal transmitted by a Base Station (BS) to the UE. If the signal quality is below a threshold, the UE initiates a measurement procedure to determine a target handover BS. The UE sequentially transmits an uplink reference signal on each of UE's beams. The BSs estimate the Angle of Arrival (AoA) of any received uplink reference signal, form a dedicated downlink beam pointed toward the AoA and transmit an acknowledgment to the UE on the corresponding beam. The UE estimates the signal quality of the received acknowledgements on the different UE beams, and transmits a handover message on the UE beam on which the acknowledgement with the highest signal quality is received. The uplink reference signal may comprise of a single preamble. The acknowledgement may comprise of a preamble, or a preamble followed by a small payload.
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公开(公告)号：US20240137920A1
公开(公告)日：2024-04-25
申请号：US18383224
申请日：2023-10-23
申请人： Ahmad Jalali
发明人： Ahmad Jalali
IPC分类号： H04W72/0453 , H04W72/541
CPC分类号： H04W72/0453 , H04W72/541
摘要： A communications apparatus comprises of one or more Active Antenna Units (AAUs) collocated in the same sector, and a processor. The processor de-multiplexes a data packet stream into at least two sub-streams, each sub-stream is transmitted on a different medium path. Each medium path is comprised of frequency channels, antenna polarizations and AAUs. A scheduler assigns data packets to different medium paths. The apparatus transmits on at least one frequency band, each frequency band is divided into a set of one or more frequency channels, at least one frequency channel of a frequency band is assigned to at least one AAU. A frequency channel is assigned to only one or to both antenna polarizations of the same AAU. The apparatus determines if an extraneous signal is present on a frequency channel and stops transmitting on the entire or part of the frequency channel where extraneous signal is detected.
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公开(公告)号：US11382139B2
公开(公告)日：2022-07-05
申请号：US16900572
申请日：2020-06-12
申请人： Ahmad Jalali
发明人： Ahmad Jalali
摘要： A User Equipment (UE) measures the signal quality of a dedicated downlink reference signal transmitted by a Base Station (BS) to the UE. If the signal quality is below a threshold, the UE initiates a measurement procedure to determine a target handover BS. The UE sequentially transmits an uplink reference signal on each of UE's beams. The BSs estimate the Angle of Arrival (AoA) of any received uplink reference signal, form a dedicated downlink beam pointed toward the AoA and transmit an acknowledgment to the UE on the corresponding beam. The UE estimates the signal quality of the received acknowledgements on the different UE beams, and transmits a handover message on the UE beam on which the acknowledgement with the highest signal quality is received The acknowledgement comprises a preamble, spread using a pseudo-noise sequence specific to each BS.
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公开(公告)号：US11304238B2
公开(公告)日：2022-04-12
申请号：US16913995
申请日：2020-06-26
申请人： Ahmad Jalali , Kasra Jalali
发明人： Ahmad Jalali , Kasra Jalali
摘要： In a beamforming system, each User Equipment (UE) transmits an uplink probe. Each Base Station (BS) carries out a spatial search of the uplink probes, estimates an Angle of Arrival (AoA) of the uplink probe received from each UE, and estimates the uplink channel frequency response on an uplink dedicated beam formed toward the UE's AoA. The BS transmits a reference signal to each UE on a downlink dedicated beam formed toward the UE's AoA, from which the UE estimates the downlink frequency response. The UE forms channel impulse response matrices for the uplink and the downlink, using the estimated uplink and downlink channel frequency responses. The BS uses the channel impulse response matrices to form downlink and uplink dedicated beams that put boresight of the beams toward the AoA of one UE and put nulls toward the AoAs of the other UEs.
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公开(公告)号：US20210392689A1
公开(公告)日：2021-12-16
申请号：US16900585
申请日：2020-06-12
申请人： Ahmad Jalali
发明人： Ahmad Jalali
摘要： In idle mode, User Equipment (UE) measures the changes in the UE's orientation and position location coordinates using sensors such as accelerometers, gyroscopes, and magnetometers. UE computes a metric of the changes in the UE's orientation and position location, and triggers a beam update process if the magnitude of the metric is above a threshold. UE begins the beam update process by sending a message to the Base Station (BS) with which it is communicating. BS estimates the Angle of Arrival (AoA) of the received message, forms a dedicated downlink beam toward the UE at the estimated AoA, and sends an acknowledgement on the dedicated downlink beam. The UE carries out a spatial search of the received acknowledgement, estimates the UE beam angular pointing position on which the highest signal quality is received, and points its beam toward the BS at the estimated UE beam angular pointing position.
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