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1. 发明申请

WO2018204122A1 COLLISION DETECTION AND AVOIDANCE MECHANISM USING DISTRIBUTED RADIO HEADS IN A WIRELESS NETWORK 审中-公开
公开(公告)号：WO2018204122A1
公开(公告)日：2018-11-08
申请号：PCT/US2018/028996
申请日：2018-04-24
申请人： CISCO TECHNOLOGY, INC.
发明人： KLOPER, David , HART, Brian, D. , SILVERMAN, Matthew, A. , STAGER, Paul, J.
IPC分类号： H04L1/00
CPC分类号： H04W74/0816 , H04L1/0002 , H04L1/0007 , H04L2001/0092 , H04W74/004 , H04W74/006 , H04W88/085
摘要： A central processor subsystem controls multiple transceivers. Each transceiver transmits protocol data units from antennas of that transceiver and produces receive waveforms from wirelessly received signals at the one or more antennas. A transmit waveform, including a frame addressed to one or more wireless client devices, is sent through a first transceiver to be transmitted wirelessly by the first transceiver on a frequency channel. A receive waveform, representative of the transmission by the first transceiver and wirelessly received at a second transceiver, is received from the second transceiver. While the transmit waveform is being sent to the first transceiver: a level of collision between the receive waveform and another transmission on the frequency channel is detected; and if the level of collision exceeds a threshold prior to an end of the receive waveform, the transmit waveform being sent to the first transceiver is modified to reduce the collision.

2. 发明申请

WO2023010007A1 RE-ESTIMATING CLOCK OFFSET FOR FREQUENCY-SELECTIVE WIRELESS CHANNELS 审中-公开
公开(公告)号：WO2023010007A1
公开(公告)日：2023-02-02
申请号：PCT/US2022/074150
申请日：2022-07-26
申请人： CISCO TECHNOLOGY, INC.
发明人： HART, Brian, D. , ALIZADEH, Ardalan , LYONS, Daniel, J. , SILVERMAN, Matthew, A.
IPC分类号： H04L27/26 , H04L27/00
摘要： Aspects discussed herein include a method and associated network device and computer program product. The method includes receiving a network packet, and estimating, using a preamble of the network packet, a power distribution corresponding to a plurality of subcarriers of a channel. The method further includes estimating a carrier frequency offset using the power distribution, and estimating a clock offset using the carrier frequency offset.

3. 发明申请

WO2022150198A1 SEAMLESS ROAMING FOR MULTI-LINK DEVICE CLIENTS 审中-公开
公开(公告)号：WO2022150198A1
公开(公告)日：2022-07-14
申请号：PCT/US2021/065018
申请日：2021-12-22
申请人： CISCO TECHNOLOGY, INC.
发明人： SMITH, Malcolm, Muir , HART, Brian, D. , MONAJEMI, Pooya , KULKARNI, Santosh, Babaji , DESAI, Vishal, Satyendra
IPC分类号： H04W76/11 , H04W76/15 , H04W84/12 , H04W88/10
摘要： Seamless client roaming for Multi-Link Device (MLD) clients may be provided. First, a Traffic Identifier (TID)-to-link map may be established by an Upper Service Access Point (U-SAP) of a multi -AP MLD entity that assigns subsets of TIDs to at least two links of the entity. For example, a client device logically associates with the U-SAP, while the client device physically connects to a first and second AP of the entity on a respective first and second link, where the first and second AP include first and second Lower Service Access Points (L-SAPs) and are non-collocated. Next, using the map, data received at the U-SAP is directed over one of the two links for transmission to the client device. Further, frame aggregation and block acknowledgement functions may be performed by one of the first or second L-SAP based on whether data transmission is over the first or second link.

4. 发明申请

WO2014039380A2 DYNAMIC ENABLING OF WIDER CHANNEL TRANSMISSIONS WITH RADIO MONITORING 审中-公开
标题翻译：用无线电监测动态地启动宽频道信道传输
公开(公告)号：WO2014039380A2
公开(公告)日：2014-03-13
申请号：PCT/US2013/057491
申请日：2013-08-30
申请人： CISCO TECHNOLOGY, INC.
发明人： HART, Brian, D. , CHAN, Douglas , KLOPER, David
IPC分类号： H04W72/04 , H04W24/00
CPC分类号： H04W74/0808 , H04L5/00 , H04L27/0006 , H04W84/12
摘要： Wider bandwidth transmissions are dynamically enabled in a wireless networking environment. During a transmit opportunity time interval for a wireless network device, a transmission is sent in a primary channel in a frequency band in which the primary channel and a secondary channel may be used simultaneously to send a wider bandwidth transmission. Activity is monitored in the secondary channel. A determination is made as to whether the secondary channel is free based on the monitoring. When it is determined that the secondary channel is free, the wider bandwidth transmission is sent in the primary and secondary channels.
摘要翻译：在无线网络环境中动态启用更宽的带宽传输。在无线网络设备的发送机会时间间隔期间，在主频道中的主信道中发送传输，其中可以同时使用主信道和辅信道以发送更宽带宽的传输。在辅助通道中监视活动。基于监视确定辅助信道是否空闲。当确定辅助信道是空闲时，在主要和次要信道中发送较宽带宽传输。

5. 发明申请

WO2012082282A1 MEDIUM RESERVATION TECHNIQUES FOR MULTI-USER TRANSMISSIONS 审中-公开
标题翻译：多用途传输的中期预留技术
公开(公告)号：WO2012082282A1
公开(公告)日：2012-06-21
申请号：PCT/US2011/060539
申请日：2011-11-14
申请人： CISCO TECHNOLOGY, INC. , HEDAYAT, Ahmadreza , HART, Brian, D.
发明人： HEDAYAT, Ahmadreza , HART, Brian, D.
IPC分类号： H04W74/08 , H04L5/00
CPC分类号： H04W74/0816
摘要： Techniques are provided for a multi-user reservation sequence used when transmitting a multi-user transmission in a wireless network. At a wireless access point device configured to operate in a wireless network, a multi-user request-to-send packet is transmitted as part of a multi-user reservation sequence prior to a multi-user transmission from the wireless access point device to a plurality of wireless client devices that are the intended recipients for the multi-user transmission. The multi-user request-to-send packet comprises duration information and address information configured to address at least some of the plurality of wireless client devices. Clear-to-send packets transmitted from two or more of the plurality of wireless client devices in response to the multi-user request-to-send packet are received at the wireless access point device. Each clear-to-send packet comprises identical content. In some scenarios, the multi-user request-to-send packet is preceded by a single-user request-to- send packet directed to a designated wireless client device.
摘要翻译：为在无线网络中发送多用户传输时使用的多用户预留序列提供技术。在被配置为在无线网络中操作的无线接入点设备处，多用户请求发送分组作为多用户预留序列的一部分被传输，在多用户从无线接入点设备传输到第作为多用户传输的预期接收者的多个无线客户端设备。所述多用户请求发送分组包括被配置为寻址所述多个无线客户端设备中的至少一些的持续时间信息和地址信息。在无线接入点设备处接收响应于多用户请求发送分组的从多个无线客户端设备中的两个或更多个无线客户端设备发送的清除发送分组。每个清除发送分组包括相同的内容。在一些情况下，多用户请求发送分组之前是指向指定的无线客户端设备的单用户请求发送分组。

6. 发明申请

WO2007030248A1 RADIO PLANNING FOR WLANS 审中-公开
标题翻译： WLAN无线电规划
公开(公告)号：WO2007030248A1
公开(公告)日：2007-03-15
申请号：PCT/US2006/030752
申请日：2006-08-07
申请人： CISCO TECHNOLOGY, INC. , HART, Brian, D. , DOUGLAS, Bretton, Lee , QIAN, Lu
发明人： HART, Brian, D. , DOUGLAS, Bretton, Lee , QIAN, Lu
IPC分类号： H04Q7/36 , H04L12/56 , H04L12/28
CPC分类号： H04W16/18
摘要： Described herein are a computer-implemented method of determining a power plan/frequency plan combination assigning transmit frequency channels and transmit powers for a plurality of managed access points (APs) of a wireless network. Also described herein is a carrier medium carrying computer readable code configured to cause one or more processors of a processing system to implement the computer implemented method of determining a power plan/frequency plan combination. The method includes determining candidate power plans for the access points, including determining candidate transmit powers for the access' points, determining a candidate frequency plan corresponding to each of the determined candidate power plans using a frequency plan determining method to determine a set of candidate power plan/frequency plan combinations, and rating each combination of a candidate power plan and candidate frequency plan according to an evaluation criterion, and selecting a preliminary power plan/frequency plan combination based on the rating. One embodiment of the method further includes determining a final power plan for the preliminary frequency plan of the preliminary power plan/frequency plan combination to obtain a final power plan/frequency plan combination.
摘要翻译：这里描述了一种计算机实现的方法，用于确定为无线网络的多个受管接入点（AP）分配发射频率信道和发射功率的功率计划/频率计划组合。这里还描述了承载计算机可读代码的载体介质，其被配置为使得处理系统的一个或多个处理器实现计算机实现的确定功率计划/频率计划组合的方法。该方法包括确定接入点的候选功率计划，包括确定接入点的候选发射功率，使用频率计划确定方法确定与每个确定的候选功率计划相对应的候选频率计划，以确定一组候选功率计划/频率计划组合，并根据评估标准对候选电力计划和候选频率计划的每个组合进行评级，以及基于评级来选择初步电力计划/频率计划组合。该方法的一个实施例还包括确定初步功率计划/频率计划组合的初步频率计划的最终功率计划以获得最终功率计划/频率计划组合。

7. 发明申请

WO2007024460A1 AUTOMATIC RADIO SITE SURVEY USING A ROBOT 审中-公开
标题翻译：使用机器人进行自动无线电测试
公开(公告)号：WO2007024460A1
公开(公告)日：2007-03-01
申请号：PCT/US2006/030750
申请日：2006-08-07
申请人： CISCO TECHNOLOGY, INC. , HART, Brian, D. , GOODALL, David, S.
发明人： HART, Brian, D. , GOODALL, David, S.
IPC分类号： H04Q7/36 , G05D1/02
CPC分类号： G05D1/0274 , G05D1/0227 , G05D1/024 , G05D1/0242 , G05D1/0255 , G05D1/028 , G05D2201/0207 , H04W16/18
摘要： A method, apparatus, and carrier medium carrying computer readable code. The apparatus includes a mobile robot arranged in operation to traverse an area, a first transceiver for a wireless network mounted on the robot and arranged in operation to communicate with a second transceiver to effect radio measurement operations including determining a measure indicative of the path loss between the first and second transceivers, and a location determining system at least a component of which is mounted on the robot and arranged in operation to determine the location of the first transceiver in the area.
摘要翻译：一种携带计算机可读代码的方法，装置和载体介质。该装置包括：移动机器人，其被布置成操作以横越区域;第一收发器，用于安装在机器人上的无线网络，并且被布置为与第二收发器通信以进行无线电测量操作，包括确定指示路径损耗的度量所述第一和第二收发器以及位置确定系统，所述位置确定系统的至少一部分安装在所述机器人上并被布置在操作中以确定所述区域中的所述第一收发器的位置。

8. 发明申请

WO2020014110A1 BYPASSING RADAR IN WIDE DYNAMIC FREQUENCY SELECTION (DFS) CHANNELS UTILIZING PUNCTURING 审中-公开
公开(公告)号：WO2020014110A1
公开(公告)日：2020-01-16
申请号：PCT/US2019/040781
申请日：2019-07-08
申请人： CISCO TECHNOLOGY, INC.
发明人： CIZDZIEL, Benjamin , HART, Brian, D. , MONAJEMI, Pooya , KLOPER, David
IPC分类号： H04W16/14
摘要： Bypassing radar in wide Dynamic Frequency Selection (DFS) channels utilizing puncturing may be provided. A first client device may be classified as eligible for puncturing and a second client device may be classified as not eligible for puncturing. Next, it may be determined that a subchannel in a bandwidth range should not be used. Then, in response to determining that the subchannel in the bandwidth range should not be used, the first client device may be steered to a first subset of the bandwidth range and the second client device may be steered to a second subset of the bandwidth range. The second subset of the bandwidth range may be smaller than the first subset of the bandwidth range.

9. 发明申请

WO2016089454A1 LOCATION MEASUREMENT OPTIMIZED OFF-CHANNEL SCANNING AND GROUPING OF ACCESS POINTS 审中-公开
标题翻译：位置测量优化的通道扫描和接入点分组
公开(公告)号：WO2016089454A1
公开(公告)日：2016-06-09
申请号：PCT/US2015/041653
申请日：2015-07-23
申请人： CISCO TECHNOLOGY, INC.
发明人： JOSHI, Shaunak , STAGER, Paul, J. , HART, Brian, D. , PANDEY, Santosh , SILVERMAN, Matthew, A.
IPC分类号： H04W64/00 , H04W72/04
CPC分类号： H04W72/0446 , H04W4/02 , H04W64/00
摘要： A plurality of time slots are allocated during which a location procedure is performed for one or more target wireless devices. Select ones of a plurality of wireless access points at different positions are assigned to each time slot such that multiple wireless access points assigned to a given time slot are sufficiently separated. In addition, wireless access points are assigned to a corresponding one of a plurality of groups for each time slot such that wireless access points assigned to a group tune to a channel used by a wireless access point in the group that transmits one or more frames that are intended to provoke one or more response frames from the one or more wireless devices.
摘要翻译：分配多个时隙，在该时隙期间为一个或多个目标无线设备执行定位过程。将选择不同位置的多个无线接入点中的一个分配给每个时隙，使得分配给给定时隙的多个无线接入点被充分分离。此外，无线接入点被分配给每个时隙的多个组中的相应一个组，使得分配给组乐曲的无线接入点到由组中的无线接入点使用的信道，所述无线接入点发送一个或多个帧，旨在引起来自一个或多个无线设备的一个或多个响应帧。

10. 发明申请

WO2014028369A2 DYNAMIC CHANNEL ASSIGNMENT FOR WLAN DEPLOYMENTS WITH IEEE 802.11AC ACCESS POINTS 审中-公开
标题翻译：带有IEEE 802.11AC接入点的WLAN部署的动态信道分配
公开(公告)号：WO2014028369A2
公开(公告)日：2014-02-20
申请号：PCT/US2013/054491
申请日：2013-08-12
申请人： CISCO TECHNOLOGY, INC.
发明人： CHAN, Douglas , AHMED, Mansoor , HEDAYAT, Ahmadreza , HART, Brian, D.
IPC分类号： H04W72/04
CPC分类号： H04W76/15 , H04W16/14 , H04W72/0426 , H04W74/0816 , H04W84/12
摘要： Techniques are provided for selecting channels for use by access points operating in a wireless local area network. Metrics are computed for at least one set of radio frequency (RF) channels, wherein the set of RF channels comprises at least two RF channels in a frequency band that are available for use by a wireless network for a wider bandwidth mode that combines bandwidth of two or more RF channels. Alignment of individual primary and secondary RF channels is determined in the set of RF channels for operation of at least first and second wireless networks. A bias is applied to the metrics for each RF channel that is a member of the set of RF channels for the primary channel depending on alignment of the primary and secondary channels of the respective first and second wireless networks to produce adjusted metrics, based on which RF channels are assigned.
摘要翻译：提供了用于选择在无线局域网中操作的接入点使用的信道的技术。针对至少一组射频（RF）信道计算度量，其中该组RF信道包括频带中的至少两个RF信道，其可用于无线网络用于更宽带宽模式，两个或更多个RF信道。在用于至少第一和第二无线网络的操作的一组RF信道中确定各个主要和次要RF信道的对准。根据相应的第一和第二无线网络的主要和次要信道的对准，对作为用于主要信道的一组RF信道的成员的每个RF信道的度量应用偏差，以产生经调整的度量，基于该偏差射频频道已分配。

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