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公开(公告)号：US11968686B2
公开(公告)日：2024-04-23
申请号：US17535201
申请日：2021-11-24
发明人： Weiliang Zeng , Sanaz Barghi , Pouriya Sadeghi , Navin Dunichand Anwani , Supratik Bhattacharjee , Gautham Hariharan
IPC分类号： H04W72/23 , H04W24/02 , H04W72/04 , H04W72/0446
CPC分类号： H04W72/23 , H04W24/02 , H04W72/0446
摘要： A method of wireless communications by a user equipment (UE) includes decoding information received from a base station via a physical downlink shared channel (PDSCH). The UE determines whether to update channel state feedback based on the decoded information. The channel state feedback is updated based on the determination to generate updated channel state feedback. The updated channel state feedback is transmitted to the base station. The UE is configured to update the channel state feedback without an additional measurement of a channel state information reference signal (CSI-RS).
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公开(公告)号：US11936452B2
公开(公告)日：2024-03-19
申请号：US16805467
申请日：2020-02-28
发明人： Taesang Yoo , Weiliang Zeng , Naga Bhushan , Krishna Kiran Mukkavilli , Tingfang Ji , Yongbin Wei , Sanaz Barghi
IPC分类号： H04B7/06 , G06N20/00 , H04B7/0456
CPC分类号： H04B7/0626 , G06N20/00 , H04B7/0486 , H04B7/0639
摘要： Various aspects of the present disclosure generally relate to neural network based channel state information (CSI) feedback. In some aspects, a device may obtain a CSI instance for a channel, determine a neural network model including a CSI encoder and a CSI decoder, and train the neural network model based at least in part on encoding the CSI instance into encoded CSI, decoding the encoded CSI into decoded CSI, and computing and minimizing a loss function by comparing the CSI instance and the decoded CSI. The device may obtain one or more encoder weights and one or more decoder weights based at least in part on training the neural network model. Numerous other aspects are provided.
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公开(公告)号：US10728765B2
公开(公告)日：2020-07-28
申请号：US16224540
申请日：2018-12-18
发明人： Jing Sun , Taesang Yoo , Xiaoxia Zhang , Sanaz Barghi , Juan Montojo
摘要： Aspects of the disclosure relate to wireless communication systems configured to share a shared spectrum with one or more other systems (e.g., other operator networks utilizing the same radio access technology, and/or other networks utilizing different radio access technologies). Coexistence between the different systems on the shared spectrum may be provided by utilizing a technology-neutral signature waveform such as a signature sequence. A device or system may monitor a shared spectrum channel for the signature waveform, and when detected, may determine whether the shared spectrum is available for that system, or busy as occupied by another system. When the shared spectrum channel is idle, the device or system may reserve the channel by transmitting the signature waveform. Other aspects, embodiments, and features are also claimed and described.
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公开(公告)号：US20190191460A1
公开(公告)日：2019-06-20
申请号：US16189795
申请日：2018-11-13
CPC分类号： H04W74/0816 , H04B7/0695 , H04B17/345 , H04W16/14 , H04W16/28 , H04W24/10 , H04W48/16 , H04W72/046 , H04W72/1236 , H04W74/0808
摘要： Methods, systems, and devices for wireless communications are described. A wireless device (e.g., a user equipment and/or base station) may select a beam configuration for a wireless transmission over a channel of a radio frequency spectrum band. The wireless device may perform a listen-before-talk (LBT) procedure on the channel using a LBT detection threshold, wherein the LBT detection threshold is based at least in part on the selected beam configuration. The wireless device may perform the wireless transmission over the channel using the selected beam configuration based at least in part on a success of the LBT procedure.
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公开(公告)号：US20140077997A1
公开(公告)日：2014-03-20
申请号：US14024520
申请日：2013-09-11
发明人： Sameer Vermani , Didier Johannes Richard Van Nee , Sanaz Barghi , Hemanth Sampath , Vincent Knowles Jones, IV
IPC分类号： H01Q3/24
CPC分类号： H01Q3/24 , H01Q3/26 , H04B7/02 , H04B7/0408 , H04B7/0426 , H04B7/0613 , H04B7/0669 , H04B7/0671 , H04B7/068 , H04B7/0682
摘要： In a particular embodiment, a method of controlling a radiation pattern includes selecting a signal processing characteristic to vary based on a radiation pattern to be emitted by an antenna array of a wireless device, wherein the antenna array includes a plurality of antennas, wherein the signal processing characteristic provides a target resultant radiation pattern, and wherein the signal processing characteristic is applies to less than all elements of the antenna array, and varying the signal processing characteristic across time, frequency, or a combination thereof.
摘要翻译： 在特定实施例中，一种控制辐射图案的方法包括：选择信号处理特性，以便根据要由无线设备的天线阵列发射的辐射图来变化，其中天线阵列包括多个天线，其中信号 处理特性提供目标合成辐射图，并且其中信号处理特性适用于小于天线阵列的所有元件，并且随时间，频率或其组合改变信号处理特性。
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公开(公告)号：US12101144B2
公开(公告)日：2024-09-24
申请号：US17648590
申请日：2022-01-21
发明人： Navin Dunichand Anwani , Supratik Bhattacharjee , Pouriya Sadeghi , Sanaz Barghi , Gautham Hariharan , Ashutosh Vinod Agrawal , Alexandre Pierrot , Ali Koochakzadeh
IPC分类号： H04B7/02 , H04B7/0417 , H04B7/0456
CPC分类号： H04B7/0486 , H04B7/0417
摘要： Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a signal. The UE may measure the signal to explore one or more inactive ranks or inactive precoders. The UE may transmit, based at least in part on the measuring, a report that includes channel state information for at least one of the one or more inactive ranks or inactive precoders. Numerous other aspects are described.
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公开(公告)号：US10405335B2
公开(公告)日：2019-09-03
申请号：US15906040
申请日：2018-02-27
发明人： Sanaz Barghi , Jing Sun , Mohammad Naghshvar , Tamer Kadous
IPC分类号： H04W72/12 , H04W16/14 , H04B7/0408 , H04J11/00 , H04L27/00 , H04W74/08 , H04L1/00 , H04L1/20 , H04W16/28 , H04L27/26 , H04L5/00
摘要： Soft channel reservation in shared spectrum networks is discussed. In network areas where multiple wireless nodes, whether from the same or different network operators, share spectrum using a channel reservation signaling form of contention resolution, an aggressor transmitter listens for a neighbor receiver's receiver channel reservation signal to the neighbor transmitter the neighbor receiver is in communication with. The receiver channel reservation signal includes channel condition information that the aggressor transmitter can use to estimate an interference impact at the neighbor receiver should the aggressor transmitter performs its transmissions to its own receivers. Based on whether this estimated interference impact exceeds or remains within a particular threshold, the aggressor transmitter may decide whether or not to back off of its transmissions until a later time.
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公开(公告)号：US20190104542A1
公开(公告)日：2019-04-04
申请号：US16135500
申请日：2018-09-19
摘要： Methods, systems, and devices for wireless communications are described. A base station may perform a channel access procedure on a shared radio frequency spectrum band using a first beam configuration. The base station may transmit, based at least in part on successful completion of the channel access procedure, a reservation request message (RRQ) to a user equipment (UE) using a second beam configuration, the second beam configuration comprising a beam width that is equal to or narrower than a beam width of the first beam configuration. The base station may receive a reservation response message (RRS) from the UE in response to the RRQ, the RRS comprising a third beam configuration that is based at least in part on the second beam configuration.
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9.发明申请公开(公告)号：US20180220428A1
公开(公告)日：2018-08-02
申请号：US15876013
申请日：2018-01-19
CPC分类号： H04W72/082 , H04B7/0408 , H04B7/0617 , H04B7/086 , H04B17/345 , H04L5/001 , H04L5/0023 , H04L5/0048 , H04L5/0055 , H04W72/046 , H04W74/008 , H04W74/02
摘要： Methods, systems, and devices for wireless communication are described for monitoring interference level to selectively control usage of a contention-based protocol. In an example, a wireless device may transmit, while operating in a non-contention-based mode for a wireless link with a second wireless device, a first beamformed data transmission to the second wireless device over a shared channel. The wireless device may determine that an interference level condition is satisfied for the shared channel and transition from operating in the non-contention-based mode to operating in a contention-based mode for the wireless link based at least in part on the interference level condition being satisfied. The wireless device may perform a contention-based protocol, while operating in the contention-based mode for the wireless link with the second wireless device, prior to transmission of a second beamformed data transmission to the second wireless device over the shared channel.
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公开(公告)号：US09608707B2
公开(公告)日：2017-03-28
申请号：US14686393
申请日：2015-04-14
发明人： Heechoon Lee , Sanaz Barghi , Feng Han , Sharad Deepak Sambhwani
CPC分类号： H04B7/0473 , H04B7/0465 , H04B7/0615 , H04B7/0639 , H04W52/06
摘要： Aspects for balancing power output on the plurality of antennas for the transmission of a transport block are disclosed. In accordance with the present disclosure, a transmitter may balance the power output on a plurality of transmit antennas in a multiple-input multiple-output (MIMO) system by having a precoded data block bypass a virtual antenna mapping of the overhead channels (e.g., control channels). Additionally or alternatively, the transmitter may balance the power output on the plurality of transmit antennas by applying an inverse mapping parameter during the precoding process to the transport block to generate a plurality of inverse mapped precoded data blocks. In some examples, the inverse mapping parameter may be an inverse of the mapping parameter. Thus, in accordance with the present disclosure, precoding a transport block may include selecting a precoding weight for each of the plurality of antennas from an unrestricted precoding weight set.
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