-
公开(公告)号：US10218539B2
公开(公告)日：2019-02-26
申请号：US15660905
申请日：2017-07-26
Applicant: Cisco Technology, Inc.
Inventor： David S. Kloper , Brian D. Hart , Dipankar B. Acharya
Abstract: The present disclosure discloses a distributed system. The distributed system includes a plurality of radio heads and a plurality of controllers disposed in one or more chassis external to the plurality of radio heads. Each of the plurality of controllers includes a baseband unit (BBU), an uplink time-division multiplexing (TDM) switch and a downlink TDM switch. The uplink TDM switch and the downlink TDM switch forward data bits between a radio head and a BBU by using TDM cells which may reduce latency relative to using Ethernet frames.
-
公开(公告)号：US10938600B2
公开(公告)日：2021-03-02
申请号：US16262444
申请日：2019-01-30
Applicant: Cisco Technology, Inc.
Inventor： David S. Kloper , Brian D. Hart , Dipankar B. Acharya
Abstract: The present disclosure discloses a distributed system. The distributed system includes a plurality of radio heads and a plurality of controllers disposed in one or more chassis external to the plurality of radio heads. Each of the plurality of controllers includes a baseband unit (BBU), an uplink time-division multiplexing (TDM) switch and a downlink TDM switch. The uplink TDM switch and the downlink TDM switch forward data bits between a radio head and a BBU by using TDM cells which may reduce latency relative to using Ethernet frames.
-
公开(公告)号：US10785059B2
公开(公告)日：2020-09-22
申请号：US16372201
申请日：2019-04-01
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.
-
4.发明授权公开(公告)号：US11122594B2
公开(公告)日：2021-09-14
申请号：US16512251
申请日：2019-07-15
Applicant: Cisco Technology, Inc.
Inventor： Gautam D. Bhanage , Brian D. Hart , David S. Kloper
Abstract: Techniques for triggering multiple basic service sets (BSSs) to share resources for a coordinated transmission are described. One technique includes determining a first amount of data available to send in a first BSS and determining a second amount of data available to send in a second BSS. The first BSS and the second BSS form an overlapping BSS. An amount of resources in the first BSS that is available to share with the second BSS for a coordinated transmission from the first BSS and the second BSS is determined based on the first amount of data and the second amount of data. A frame that includes an indication of the amount of resources is generated and transmitted to at least one of the first BSS and the second BSS.
-
公开(公告)号：US10367550B2
公开(公告)日：2019-07-30
申请号：US15477620
申请日：2017-04-03
Applicant: Cisco Technology, Inc.
Inventor： David S. Kloper , Mithat C. Dogan , Matthew A. Silverman , Brian D. Hart , Jiunming Huang
IPC: H04B7/0426 , H04B7/0452
Abstract: The present disclosure discloses that a device uses precoding to transmit independent data streams to existing users and additional independent data streams to one or more new users simultaneously. During a first transmission of a first one or more data streams that are precoded using a first precoding matrix, the device determines to transmit a second one or more data streams in a second transmission. Before the first transmission is complete, the device calculates a combined precoding matrix for precoding the first one or more data streams and the second one or more data streams. The device transmits the first one or more data streams in the first transmission and the second one or more data streams in the second transmission simultaneously using the combined precoding matrix.
-
Patent Agency Ranking
公开(公告)号：US10218416B2
公开(公告)日：2019-02-26
申请号：US15431539
申请日：2017-02-13
Applicant: Cisco Technology, Inc.
Inventor： Matthew A. Silverman , Paul J. Stager , David S. Kloper , Brian D. Hart , Qing Zhao
IPC: H04B7/04 , H04B7/0452 , H04L12/26 , H04L12/24
Abstract: Embodiments herein describe a network device (e.g., an access point) that dynamically arranges multi-user (MU) multiple input multiple output (MIMO) compatible client devices into MU-MIMO groups. That is, the network device uses network metrics and historical data to change the assignment of client devices in the MU-MIMO groups which may improve MU-MIMO efficiency by reducing the amount of power that leaks between the clients devices in the group. In one embodiment, the AP identifies a MU-MIMO group based on a performance evaluation such as evaluating network metric or determining if the group is underutilized. The AP can replace the identified MU-MIMO group with a substitute MU-MIMO group where the substitute MU-MIMO group is selected based on historical data corresponding to the client devices assigned to the substitute MU-MIMO group.
-
公开(公告)号：US20210014888A1
公开(公告)日：2021-01-14
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.
-
公开(公告)号：US20200374919A1
公开(公告)日：2020-11-26
申请号：US16420663
申请日：2019-05-23
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.
-
公开(公告)号：US10849157B1
公开(公告)日：2020-11-24
申请号：US16420663
申请日：2019-05-23
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.
-
10.发明授权公开(公告)号：US10285148B2
公开(公告)日：2019-05-07
申请号：US15582024
申请日：2017-04-28
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.
-
-
-
-
-
-
-
-
-
Search Results
19
records
(took 0.019 seconds)
