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1.发明申请公开(公告)号：US20240380932A1
公开(公告)日：2024-11-14
申请号：US18477002
申请日：2023-09-28
Applicant: Cisco Technology, Inc.
Inventor： Jerome HENRY , Robert E. BARTON , Indermeet S. GANDHI , Brian D. HART
IPC: H04N21/24 , H04N21/238 , H04N21/61
Abstract: Disclosed herein are a system and method for efficiently routing high-priority frames through a wireless network based on markings of the frames by a data link layer, a network layer, or an application layer in a five-layer protocol stack. When a real-time application, such as a video or gaming application, is to be sent to one or more stations in the wireless network, the access point determines the strategy for routing the high-priority frames based on the markings received from the data link, network, or application layer. Strategies include discarding non-I frames when there is congestion in the wireless network, replicating I-frames to assure reliable delivery to the stations, scheduling I-frames with preference, and moving I-frames ahead in a buffer in the access point.
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公开(公告)号：US20240373333A1
公开(公告)日：2024-11-07
申请号：US18311062
申请日：2023-05-02
Applicant: Cisco Technology, Inc.
Inventor： Malcolm M. SMITH , Brian D. HART , Jerome HENRY , Pooya MONAJEMI
Abstract: Techniques for wireless device roaming are disclosed. These techniques include identifying a wireless client entity for roaming from a first infrastructure entity to a second infrastructure entity. The techniques further include agreeing, between the client entity and the first infrastructure entity, on one or more roaming conditions defined using transition parameters for transition of a first data flow for the client entity from the first infrastructure entity to the second infrastructure entity, the one or more transition parameters including a sequence number relating to the dataflow. The techniques further include determining that a first condition defined in terms of a transition parameter of the agreed one or more roaming conditions is met, and, based on the determining, transitioning from providing the first dataflow from the first infrastructure entity to the client entity to providing the first data flow from the second infrastructure entity to the client entity.
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公开(公告)号：US20240334225A1
公开(公告)日：2024-10-03
申请号：US18194614
申请日：2023-03-31
Applicant: Cisco Technology, Inc.
Inventor： Matthew A. SILVERMAN , John M. SWARTZ , Malcolm M. SMITH , Brian D. HART
IPC: H04W24/10 , H04B7/0456 , H04L5/00 , H04W48/16
CPC classification number: H04W24/10 , H04B7/0456 , H04L5/005 , H04W48/16
Abstract: Techniques for sounding for wireless communication are disclosed. These techniques include initiating staggered sounding between a plurality of wireless access points (APs) and a plurality of wireless stations (STAs), including transmitting, from each AP of the plurality of APs, a sounding trigger to a respective one or more of the plurality of STAs, where the sounding triggers are transmitted by the respective APs at staggered times. The techniques further include receiving sounding matrix data at the plurality of APs from the plurality of STA. The techniques further include modifying wireless transmission between at least one of the APs and at least one of the STAs based on the sounding matrix data.
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公开(公告)号：US20240155665A1
公开(公告)日：2024-05-09
申请号：US18193501
申请日：2023-03-30
Applicant: Cisco Technology, Inc.
Inventor： Brian D. HART , Malcolm M. SMITH , Pooya MONAJEMI , Jerome HENRY , Robert E. BARTON
IPC: H04W72/563 , H04W72/121 , H04W72/51
CPC classification number: H04W72/563 , H04W72/121 , H04W72/51
Abstract: Techniques for delegated peer-to-peer scheduling are provided. A first peer-to-peer device determines one or more wireless channels allocated for peer-to-peer communication, and receives a request indicating a set of transmission characteristics from a second peer-to-peer device that uses the first peer-to-peer device as a communications proxy. The first peer-to-peer device schedules wireless resources of the one or more wireless channels to a plurality of peer-to-peer devices based at least in part on the set of transmission characteristics, and performs peer-to-peer communications with the second peer-to-peer device in accordance with the scheduled wireless resources.
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公开(公告)号：US20210351879A1
公开(公告)日：2021-11-11
申请号：US16869311
申请日：2020-05-07
Applicant: Cisco Technology, Inc.
Inventor： Huaiyi WANG , Brian D. HART , Matthew A. SILVERMAN , Zhigang GAO
Abstract: Aspects described herein include a method comprising predicting, based on one or more transmission characteristics, error values for a sequence of bit positions used for modulating data within a packet. The method further comprises generating a bitmap that maps one or more payload bits and one or more padding bits of the packet to respective bit positions of the sequence. The one or more padding bits are preferentially mapped to respective bit positions having relatively greater error values. The method further comprises modulating the sequence according to the bitmap.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20210022156A1
公开(公告)日：2021-01-21
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.
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公开(公告)号：US20180294898A1
公开(公告)日：2018-10-11
申请号：US15480197
申请日：2017-04-05
Applicant: Cisco Technology, Inc.
Inventor： Mithat C. DOGAN , Jiunming HUANG , Brian D. HART , Matthew A. SILVERMAN
CPC classification number: H04B17/12 , H01Q3/26 , H04B7/024 , H04B7/0417 , H04B7/0626 , H04B17/14 , H04B17/21 , H04L5/14 , H04L25/0248
Abstract: Embodiments herein describe calibrating a plurality of radio heads having a plurality of wireless antennas. In one embodiment, the plurality of radio heads communicate a calibration signal in a round robin fashion such that each of the radio heads communicates a respective calibration signal to the remaining radio heads. The received calibration signals are then used to calibrate the radio heads. In one embodiment, a controller coupled with the plurality of radio heads calibrates the radio heads. The calibrated radio heads then communicate to one or more client devices.
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公开(公告)号：US20180287772A1
公开(公告)日：2018-10-04
申请号：US15479077
申请日：2017-04-04
Applicant: Cisco Technology, Inc.
Inventor： David S. KLOPER , Brian D. HART , Paul J. STAGER
CPC classification number: H04L7/0012 , H04L12/10
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：US20180255547A1
公开(公告)日：2018-09-06
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
CPC classification number: H04W72/0433 , H04L5/0048 , H04L25/00 , H04L27/26 , H04W72/0446 , H04W74/0808 , H04W88/085 , H04W88/12
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：US20240381430A1
公开(公告)日：2024-11-14
申请号：US18452471
申请日：2023-08-18
Applicant: Cisco Technology, Inc.
Inventor： Malcolm M. SMITH , Brian D. HART , Matthew A. SILVERMAN , Robert E. BARTON
IPC: H04W74/08
Abstract: A signaling mechanism is provided that includes a restricted random access resource unit (XRA RU) that restricts uplink random access, such as by using Uplink Orthogonal frequency-division multiple access-based Random Access (UORA), to a subset of a plurality of stations that are associated with an Access Point (AP). In one aspect, an AP allocates a resource unit as an XRA RU that restricts uplink random access to a subset of a plurality of stations (STAs) that are associated with the AP. The AP transmits an uplink trigger that includes the XRA RU. The AP restricts use of the XRA RU to the subset of the plurality of STAs. In this way, STAs of the subset can attempt contention-based random access with the XRA RU while other STAs are prevented from attempting random access with the XRA RU.
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