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    DYNAMIC FREQUENCY COORDINATION IN SHARED WIRELESS COMMUNICATION ENVIRONMENTS
    1.
    发明申请
    DYNAMIC FREQUENCY COORDINATION IN SHARED WIRELESS COMMUNICATION ENVIRONMENTS 审中-公开

    公开(公告)号：WO2023039338A1

    公开(公告)日：2023-03-16

    申请号：PCT/US2022/075309

    申请日：2022-08-23

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： SILVERMAN, Matthew A. ,  DAISY, Mahesh ,  HENRY, Jerome ,  DESAI, Vishal S.

    IPC: H04W72/02 ,  H04W24/00 ,  H04W88/10 ,  H04W52/00

    Abstract: Various embodiments herein disclose coordinating frequencies for an access point (AR). A corresponding method comprises evaluating a performance profile for the AR, the performance profile comprising a first part related to a first network generated by a first radio of the AR and a second part related to a second network generated by a second radio of the AR. The method also comprises selecting first channels on which the AR generates the first network based on the performance profile and spectral regrowth profiles for transmission power levels of the first radio. The method additionally comprises selecting second channels on which the AR generates the second network based at least in part on the performance profile and the spectral regrowth profiles. Furthermore, the method comprises enabling communications between a first set of devices on the first channels and enabling communications between a second set of devices on the second channels.

    COMMUNICATION ARRANGEMENT AND METHOD OF OPERATING A DIGITALLY CONTROLLABLE SCATTERER
    3.
    发明申请
    COMMUNICATION ARRANGEMENT AND METHOD OF OPERATING A DIGITALLY CONTROLLABLE SCATTERER 审中-公开

    公开(公告)号：WO2021232046A1

    公开(公告)日：2021-11-18

    申请号：PCT/US2021/070529

    申请日：2021-05-11

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： BANE, Danielle N. ,  CYPHERT, Jonathan M. ,  KALAVAKURU, Sivadeep R. ,  SHEIKH, Ashish Pasha ,  SILVERMAN, Matthew A.

    IPC: H01Q7/00 ,  H01Q21/20 ,  H01Q3/26 ,  H01Q9/42

    Abstract: A dual mode antenna that comprises: a first conductive piece; and a second conductive piece, configured to electromagnetically couple with the first conductive piece through a dielectric at a second frequency to operate as a loop antenna with the first conductive piece and configured to operate independently of the first conductive piece at a first frequency to operate as a monopole antenna. The dual mode antenna can be included in an antenna array as one of a plurality of dual mode antennas coupled to a routing substrate or a reference dual mode antenna coupled to the routing substrate along with a plurality of single mode antennas coupled to the routing substrate; wherein each antenna of the plurality of dual mode antennas, the reference dual mode antenna, and the plurality of single mode antennas is arranged evenly relative to a first neighboring antenna and a second neighboring antenna.

    ESTIMATING AND UTILIZING CLIENT RECEIVE INTERFERENCE CANCELLATION CAPABILITY IN MULTI-USER TRANSMISSIONS
    4.
    发明申请
    ESTIMATING AND UTILIZING CLIENT RECEIVE INTERFERENCE CANCELLATION CAPABILITY IN MULTI-USER TRANSMISSIONS 审中-公开
    多用户传输中客户端接收干扰消除能力的估计与利用

    公开(公告)号：WO2014209609A1

    公开(公告)日：2014-12-31

    申请号：PCT/US2014/041872

    申请日：2014-06-11

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： SILVERMAN, Matthew A. ,  STAGER, Paul J. ,  HART, Brian D.

    IPC: H04B7/04

    CPC classification number: H04W24/08 ,  H04B7/0452 ,  H04B7/0456 ,  H04L1/203 ,  H04L1/24 ,  H04L2025/03426 ,  H04W24/06

    Abstract: A first device having a plurality of antennas wirelessly transmits multiple series of test packets to a second device having one or more antennas, each series of test packets being transmitted with a different level of interference imposed on the test packets. The first device determines a packet error rate for each series of test packets transmitted by the first device. The first device derives an estimate of an interference cancellation capability of the second device based on the packet error rate for different levels of interference.

    Abstract translation: 具有多个天线的第一设备将具有一个或多个天线的第二设备无线地发射多个测试分组，每一组测试分组以不同的干扰等级施加在测试分组上。 第一设备确定由第一设备发送的每一系列测试分组的分组错误率。 第一设备基于不同级别的干扰的分组错误率导出第二设备的干扰消除能力的估计。

    MAPPING BIT POSITIONS USING PREDICTED ERROR VALUES
    6.
    发明申请
    MAPPING BIT POSITIONS USING PREDICTED ERROR VALUES 审中-公开

    公开(公告)号：WO2021226635A1

    公开(公告)日：2021-11-11

    申请号：PCT/US2021/070516

    申请日：2021-05-06

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： WANG, Huaiyi ,  HART, Brian D. ,  SILVERMAN, Matthew A. ,  GAO, Zhigang

    IPC: H04L1/00

    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.

    BSS-COLOR GRADING IN A WLAN INFRASTRUCTURE
    7.
    发明申请
    BSS-COLOR GRADING IN A WLAN INFRASTRUCTURE 审中-公开

    公开(公告)号：WO2021151118A1

    公开(公告)日：2021-07-29

    申请号：PCT/US2021/070069

    申请日：2021-01-22

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： DESAI, Vishal S. ,  HENRY, Jerome ,  SILVERMAN, Matthew A. ,  BARTON, Robert E.

    IPC: H04W74/08 ,  H04W24/02 ,  H04W28/0268 ,  H04W48/12 ,  H04W48/16 ,  H04W48/20 ,  H04W74/006 ,  H04W74/0825 ,  H04W84/12

    Abstract: Embodiments herein describe techniques for conveying performance parameters to client devices using BSS coloring. IEEE 802.11 ax introduced BSS color to help with interference between BBSs operating in the same channel or partially overlapping channels in a frequency band. The BSS colors are typically assigned at random. However, in the embodiments herein, the BSS colors can still be relied to help with co-channel interference as intended by IEEE 802.11 ax but also can convey performance parameters to the client devices. The AP can leverage the BSS color to convey (or encode) a performance parameter such as radio frequency (RF) conditions, quality of service (QoS) conditions, or a policy of the network in response to expected (or future) conditions to receiving client devices.

    PERFORMING DISTRIBUTED DYNAMIC FREQUENCY SELECTION USING A SHARED CACHE
    8.
    发明申请
    PERFORMING DISTRIBUTED DYNAMIC FREQUENCY SELECTION USING A SHARED CACHE 审中-公开

    公开(公告)号：WO2021108260A1

    公开(公告)日：2021-06-03

    申请号：PCT/US2020/061552

    申请日：2020-11-20

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： KULKARNI, Santosh B. ,  DESAI, Vishal S. ,  MONAJEMI, Pooya ,  CHOI, Young Il ,  SILVERMAN, Matthew A.

    IPC: H04W16/14 ,  H04W16/10

    Abstract: Embodiments herein describe a group of APs (115A-115D) that uses a shared radar cache (120A) to select a new channel after vacating a current channel when performing dynamic frequency selection (DFS). The group of APs (115A-115D) can set aside memory to store status information about the DFS channels in the frequency band. For example, when one AP detects a radar event (and has to vacate a DFS channel), the AP updates an entry for that channel in the shared radar cache (120A). The APs can also query the cache to determine a new channel after vacating its current channel. That is, the shared radar cache may store the most recent radar events occurring in a channel. In this manner, the APs can select a new channel that has little or no recent radar events, which reduces the likelihood the AP will have to vacate the new channel.

    CONCURRENT PEER-TO-PEER TRANSMISSIONS VIA INTERFERENCE ALIGNMENT
    10.
    发明公开
    CONCURRENT PEER-TO-PEER TRANSMISSIONS VIA INTERFERENCE ALIGNMENT 审中-公开

    公开(公告)号：EP4304104A1

    公开(公告)日：2024-01-10

    申请号：EP23182316.2

    申请日：2023-06-29

    Applicant: Cisco Technology, Inc.

    Inventor： ALIZADEH, Ardalan ,  SILVERMAN, Matthew A. ,  KALAVAKURU, Sivadeep R. ,  AMINI, Peiman ,  HART, Brian D.

    IPC: H04B7/0456 ,  H04J11/00 ,  H04W76/14

    Abstract: Techniques for peer-to-peer (P2P) transmission using interference alignment are disclosed. These techniques include calculating one or more precoder matrices and one more decoder matrices relating to interference alignment for data transmission between a plurality of wireless stations (STAs). The techniques further include initiating P2P transmission between the plurality of STAs using the one or more precoder matrices and the one or more decoder matrices, the P2P transmission including: simultaneously transmitting data between at least two pairs of STAs, of the plurality of STAs, using the one or more precoder matrices and the one or more decoder matrices for interference alignment of the simultaneous transmissions.

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