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公开(公告)号：US10277384B2
公开(公告)日：2019-04-30
申请号：US15479077
申请日：2017-04-04
Applicant: Cisco Technology, Inc.
Inventor： David S. Kloper , Brian D. Hart , Paul J. Stager
Abstract: Embodiments herein describe using an intermediate distribution frame (IDF) which is connected between a central controller and a plurality radio heads which each include at least one antenna for wireless communication with a user device. Instead of running separate cables to each of the radio heads, a single cable can be used to connect the IDF to the central controller and then separate cables can be used to connect the IDF to the radio heads. If the IDF is disposed near the radio heads, the amount of cables can be reduced. Moreover, the IDF may recover a clock signal used by the central controller and forward that clock to the plurality of radio head in order to synchronize the radio heads to the central controller.
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公开(公告)号：US10250415B2
公开(公告)日：2019-04-02
申请号：US15447980
申请日：2017-03-02
Applicant: Cisco Technology, Inc.
Inventor： Brian D. Hart , David S. Kloper , Jiunming Huang , Glendon L. Akins, III
Abstract: Techniques are disclosed to reduce latency of processing for access points using a central controller. For example, an example method of wireless communication includes receiving, at an access point, a signal wirelessly. The method further includes filtering the signal using a first passband filter having a first bandwidth to generate a first filtered signal. The method further includes filtering the signal using a second passband filter having a second bandwidth to generate a second filtered signal, wherein the first bandwidth is less than the second bandwidth. The method further includes determining whether the signal includes a packet based on the first filtered signal and generating a control signal indicative of the determination. The method further includes transmitting the control signal and the second filtered signal to a central controller.
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公开(公告)号：US09306722B2
公开(公告)日：2016-04-05
申请号：US13933456
申请日：2013-07-02
Applicant: Cisco Technology, Inc.
Inventor： Raghuram Rangarajan , Paul Stager , David S. Kloper
CPC classification number: H04L5/0062 , H04L5/0037 , H04L5/0064 , H04L27/0006
Abstract: In an example embodiment, a channel that includes a plurality of sub-channels is sampled to detect pulses indicative of a presence of a radar signal. A frequency for the radar signal is determined. If the frequency of the radar signal maps to a selected subset of the plurality of sub-channels, the selected subset of the plurality of sub-channels are determined to be unavailable due to radar, while the remaining sub-channels remain available for use. The selected subset of the plurality of sub-channels determined to be unavailable due to radar may be selectively returned for use after the radar signal is no longer detected for a predetermined selected time period.
Abstract translation: 在示例实施例中，对包括多个子信道的信道进行采样以检测指示雷达信号的存在的脉冲。 确定雷达信号的频率。 如果雷达信号的频率映射到多个子信道的所选择的子集，则由于雷达，多个子信道的所选择的子集被确定为不可用，而其余子信道保持可用。 在预定的选定时间段内不再检测到雷达信号之后，由于雷达而被确定为不可用的多个子信道的所选子集可被选择返回使用。
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公开(公告)号：US12120153B2
公开(公告)日：2024-10-15
申请号：US18361779
申请日：2023-07-28
Applicant: Cisco Technology, Inc.
Inventor： Malcolm M. Smith , Jerome Henry , Pooya Monajemi , Brian D. Hart , David S. Kloper
Abstract: A device includes a memory and a hardware processor communicatively coupled to the memory. The hardware processor determines that a computing device communicatively coupled to an access point performed an action with respect to the access point and in response to determining that the action causes a deviation from a multi-user uplink policy of the access point, transmits a disciplinary message to the computing device.
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Patent Agency Ranking
公开(公告)号：US11799912B2
公开(公告)日：2023-10-24
申请号：US17301150
申请日：2021-03-26
Applicant: Cisco Technology, Inc.
Inventor： Malcolm M. Smith , Jerome Henry , Pooya Monajemi , Brian D. Hart , David S. Kloper
Abstract: A device includes a memory and a hardware processor communicatively coupled to the memory. The hardware processor determines that a computing device communicatively coupled to an access point performed an action with respect to the access point and in response to determining that the action causes a deviation from a multi-user uplink policy of the access point, transmits a disciplinary message to the computing device.
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公开(公告)号：US11457470B2
公开(公告)日：2022-09-27
申请号：US17036724
申请日：2020-09-29
Applicant: Cisco Technology, Inc.
Inventor： Guru Prasanna Gopalakrishnan , David S. Kloper , Pooya Monajemi
Abstract: A method for scheduling a random access trigger frame (RA TF) in a wireless LAN includes determining whether a scheduled access (SA) TF is scheduled during a beacon interval (BI) beginning with a next beacon; determining whether one of, a first weighted average of a sum of (i) a number of clients whose respective buffer status reports (BSRs) have been successfully received (NSUCC) and (ii) a number of clients whose respective BSRs collided with one another (NCOL) is greater than a first threshold, or a second weighted average of an active number of UL OFDMA enabled HE users sending SU uplink traffic (NSU) is greater than the first threshold; when either weighted average is greater than the first threshold, allocating a predetermined number of RA RUs along with at least one SA RU in a buffer status report poll (BSRP) TF and scheduling the BSRP TF for transmission.
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17.发明授权公开(公告)号：US10863465B2
公开(公告)日：2020-12-08
申请号：US16388571
申请日：2019-04-18
Applicant: Cisco Technology, Inc.
Inventor： Paul J. Stager , David S. Kloper , Brian D. Hart , Matthew A. Silverman
IPC: H04W56/00
Abstract: Techniques are disclosed to synchronize wireless signal transmission by endpoints controlled by a central controller. For example, an example method of wireless communication includes receiving, at a first device, over a wired medium between the first device and a second device, a plurality of packets from the second device. Each of the plurality of packets comprises data representative of a portion of a signal corresponding to a wireless medium. The method further includes receiving, at the first device, from the second device over the wired medium a synchronization signal based on a common master clock at the second device. The method further includes synchronizing, at the first device, a local clock of the first device to the common master clock based on the synchronization signal. The method further includes reconstructing the signal corresponding to the wireless medium based on the plurality of packets and the synchronized local clock.
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公开(公告)号：US10455439B2
公开(公告)日：2019-10-22
申请号：US15495503
申请日：2017-04-24
Applicant: Cisco Technology, Inc.
Inventor： David S. Kloper , Matthew A. Silverman , Paul J. Stager
Abstract: The present disclosure discloses a central controller controlling multiple radio heads (RHs) in a network. The central controller generates network information for the radio heads based on a probe request transmitted from a network device and received by one or more of the radio heads. The central controller calculates a respective metric value for each of the radio heads based on the network information. The metric value indicates a capability of a radio head to serve the network device. The central controller selects a subset of radio heads from the multiple radio heads to send a probe response to the network device based on the metric values.
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公开(公告)号：US20150009947A1
公开(公告)日：2015-01-08
申请号：US13933456
申请日：2013-07-02
Applicant: Cisco Technology, Inc.
Inventor： Raghuram Rangarajan , Paul Stager , David S. Kloper
IPC: H04L5/00
CPC classification number: H04L5/0062 , H04L5/0037 , H04L5/0064 , H04L27/0006
Abstract: In an example embodiment, a channel that includes a plurality of sub-channels is sampled to detect pulses indicative of a presence of a radar signal. A frequency for the radar signal is determined. If the frequency of the radar signal maps to a selected subset of the plurality of sub-channels, the selected subset of the plurality of sub-channels are determined to be unavailable due to radar, while the remaining sub-channels remain available for use. The selected subset of the plurality of sub-channels determined to be unavailable due to radar may be selectively returned for use after the radar signal is no longer detected for a predetermined selected time period.
Abstract translation: 在示例实施例中，对包括多个子信道的信道进行采样以检测指示雷达信号的存在的脉冲。 确定雷达信号的频率。 如果雷达信号的频率映射到多个子信道的所选择的子集，则由于雷达，多个子信道的所选择的子集被确定为不可用，而其余子信道保持可用。 在预定的选定时间段内不再检测到雷达信号之后，由于雷达而被确定为不可用的多个子信道的所选子集可被选择返回使用。
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