-
1.发明公开公开(公告)号：US20230354213A1
公开(公告)日：2023-11-02
申请号：US17730732
申请日：2022-04-27
发明人： Aditya Chopra , Salam Akoum , Thomas Novlan
CPC分类号： H04W52/243 , H04L5/0058 , H04L5/14 , H04W72/0446 , H04W72/082
摘要： Aspects of the subject disclosure may include, for example, determining a self-interference channel response of a transceiver of a mobile base station having a transmitter and a receiver. The self-interference channel response spans multiple sub-bands of a predetermined mobile cellular frequency channel. A first sub-band of the multiple sub-bands is identified according to the self-interference channel response and, an estimate is determined, at the receiver, of a first coupled transmit power level of the transmitter when operating within the first sub-band. A receiver sensitivity is adjusted according to the first coupled transmit power level to obtain an adjustment adapted to increase receiver sensitivity, while restricting operation of the receiver to a substantially linear region. The adjustment allows a transmission within the first sub-band and a reception within a second sub-band of the plurality of sub-bands to occur simultaneously at the mobile base station. Other embodiments are disclosed.
-
2.发明公开公开(公告)号：US20230344680A1
公开(公告)日：2023-10-26
申请号：US17869904
申请日：2022-07-21
发明人： Salam Akoum , Aditya Chopra , Milap Majmundar
IPC分类号： H04L25/02 , H04L5/00 , H04B7/0413 , H04B7/06 , H04W28/06
CPC分类号： H04L25/0224 , H04L5/0048 , H04L5/0064 , H04B7/0413 , H04B7/0665 , H04W28/06 , H04L67/10
摘要： Aspects of the subject disclosure may include, for example, a device having a processing system including a processor; and a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations including: receiving sounding reference signal (SRS) data for an uplink transmission of a user equipment (UE) from a remote unit (RU); generating SRS-based beam weights; transmitting the SRS-based beam weights to the RU; instructing the RU to generate DMRS-based beam weights and send demodulation reference signal (DMRS) channel estimates from subsequent uplink transmissions of the UE; and receiving the DMRS channel estimates from the RU. Other embodiments are disclosed.
-
公开(公告)号：US11588923B2
公开(公告)日：2023-02-21
申请号：US17187384
申请日：2021-02-26
发明人： Aditya Chopra , Arunabha Ghosh , Milap Majmundar
摘要： Compression techniques can reduce the fronthaul throughput in split radio access network (RAN) architectures for next generation designs. Adaptive fixed-point mapping can reduce the throughput requirements between a baseband unit (DU) and a remote radio unit (RU). Thus, a bit or plurality of bits can indicate the type of data being passed over the fronthaul. Consequently, adaptive mapping between precoded downlink data and non-precoded downlink data suited to the type of data passed over the fronthaul can achieve high compression ratios.
-
公开(公告)号：US11533065B2
公开(公告)日：2022-12-20
申请号：US17241847
申请日：2021-04-27
摘要： Aspects of the subject disclosure may include, for example, obtaining a received channel-encoded data block having information bits, a transmitted error-check value, and redundant code bits. The redundant code bits correspond to a channel code applied to the received channel-encoded data block prior to transmission via a communication channel. A channel code type is identified and responsive to it being systematic, the information bits and the transmitted error-check value are obtained without decoding according to the channel code. The received channel-encoded data block is checked according to the transmitted error-check value to obtain a result. Responsive to the result not indicating an error, extracting the information bits without decoding the received channel-encoded data block according to the channel code. Responsive to the result indicating an error, decoding the received channel-encoded data block according to the channel code to obtain decoded information bits. Other embodiments are disclosed.
-
公开(公告)号：US20220319123A1
公开(公告)日：2022-10-06
申请号：US17659650
申请日：2022-04-18
IPC分类号： G06T19/00 , H04B17/391 , H04B17/309
摘要： Methods, computer-readable media, and apparatuses for presenting a visualization of at least one wireless channel parameter as an overlay on top of an image of an environment are described. For example, a processing system including at least one processor may obtain at least a first wireless channel parameter of at least a first location, generate a first visualization of the at least the first wireless channel parameter, where the first visualization indicates at least one of: a magnitude of the at least the first wireless channel parameter or a direction of the at least the first wireless channel parameter, and present the first visualization of the at least the first wireless channel parameter as an overlay on top of a first image of an environment associated with the first location via a display device.
-
公开(公告)号：US11240843B2
公开(公告)日：2022-02-01
申请号：US16459937
申请日：2019-07-02
发明人： Ralf Bendlin , Arunabha Ghosh , Aditya Chopra
摘要： The disclosed subject matter is directed towards a clear channel assessment procedure based on a common preamble, such as for use with 3GPP and IEEE 802.11 technologies, or any other radio technology, including for use in the 6 GHz band. Detection of the common preamble is based on detecting known sequences in signal part, which can be detected without decoding the preamble's payload (channel) part to determine an ongoing transmission's duration. If an ongoing transmission is detected, subsequent energy detection monitoring is performed to determine when transmission ends, which can use a different energy detection threshold from what is used in the initial clear channel assessment's energy detection. The technology facilitates the usage of different sampling rates by different radio technologies that work concurrently in the same unlicensed band, by correlating a received preamble with a stored preamble that accounts for deterministic distortions arising from the different sampling rates.
-
公开(公告)号：US11082265B2
公开(公告)日：2021-08-03
申请号：US16527180
申请日：2019-07-31
IPC分类号： H04L25/02 , H04W72/04 , H04W56/00 , H04W84/12 , H04B7/0413
摘要： In one example, a processing system of a mobile channel sounding transmitter including at least one processor may establish a wireless side link between the mobile channel sounding transmitter and a channel sounding receiver, transmit, to the channel sounding receiver, a wireless synchronization signal via the wireless side link, and transmit at least one channel sounding waveform in accordance with the wireless synchronization signal. In another example, a processing system of a channel sounding receiver including at least one processor may establish a wireless side link between a mobile channel sounding transmitter and the channel sounding receiver, obtain, from the mobile channel sounding transmitter, a wireless synchronization signal via the wireless side link, and obtain, from the mobile channel sounding transmitter, at least one channel sounding waveform in accordance with the wireless synchronization signal.
-
公开(公告)号：US20210051612A1
公开(公告)日：2021-02-18
申请号：US16543305
申请日：2019-08-16
发明人： Ralf Bendlin , Aditya Chopra , Thomas Novlan , Milap Majmundar
摘要： The described technology is generally directed towards over the air synchronization of network nodes. In general, the techniques disclosed herein can be implemented by a first base station node device and a second base station node device. A wireless backhaul connection between the base station node devices allows the first base station node device to connect to a core network via the second base station node device. The techniques disclosed herein can be implemented as a protocol including communications back and forth between the base station node devices, which enables measurement of communication delays such as propagation delays and processing delays. The base station node devices can then use the measured communication delays to better synchronize clocks used to time radio frequency transmissions.
-
公开(公告)号：US20210036421A1
公开(公告)日：2021-02-04
申请号：US16527218
申请日：2019-07-31
摘要： A wireless channel sounding system may include a wireless channel sounding transmitter having at least two radio frequency front ends coupled to at least two phased array antennas to generate at least two radio frequency channel sounding waveforms from at least two baseband signals, the at least two phased array antennas each controllable to provide a respective transmit beam that is steerable in azimuth and elevation, and that comprises one of the at least two radio frequency channel sounding waveforms, where faces of the at least two phased array antennas are arranged to provide a transmit beam coverage over 360 degrees in azimuth, and a first processing system including at least one processor, in communication with the at least two radio frequency front ends, to provide the at least two baseband signals and steer the respective transmit beams via instructions to the at least two radio frequency front ends.
-
公开(公告)号：US20200106507A1
公开(公告)日：2020-04-02
申请号：US16702003
申请日：2019-12-03
IPC分类号： H04B7/06 , H04W52/24 , H04B7/0456 , H04B7/08
摘要： Precoding coefficients can be compressed based on user equipment signal interference to noise ratio or path loss in front haul cloud radio access network systems. For example, a baseband unit can compute a precoder matrix from an estimated channel associated with an uplink signal. Once the baseband unit computes the channel, it can determine the coefficients for the linear combination of the basis vectors, which are known at the baseband unit and the radio unit as well. The baseband unit can estimate the path loss and the signal interference to noise ratio and determine the basis vectors. The baseband unit can then compress the coefficients and transmit the coefficients to the radio unit. When the radio unit receives the compressed coefficients, the radio unit can reconstruct the precoder matrix and apply to reference signals and data traffic channels.
-
-
-
-
-
-
-
-
-
搜索结果
108 条记录 (耗时 0.228 秒)
