Apparatus and method for deriving a submatrix

    公开(公告)号:US10587318B2

    公开(公告)日:2020-03-10

    申请号:US16014232

    申请日:2018-06-21

    IPC分类号: H04B7/0456 H04B7/0417

    摘要: An apparatus for deriving a submatrix {tilde over (G)}−1 is described. The apparatus for deriving a submatrix {tilde over (G)}−1 is configured to select an N-elements-column and an N-elements-row of an N×N-Matrix G or G−1. The apparatus for deriving a submatrix {tilde over (G)}−1 is configured to rearrange the selected column to the rightest column and the selected row to the lowest row of G or G−1 so as to generate a N×N-matrix Gp or Gp−1. The apparatus for deriving a submatrix {tilde over (G)}−1 is configured to calculate a submatrix {tilde over (G)}−1 by G ~ - 1 = A - AbcA d - 1 + c T ⁢ Ab , wherein the parameters (N−1)×(N−1)-submatrix A, b, d, c are obtained from the Gp or the Gp−1; wherein G p = [ G ~ b c T d ] , ⁢ G p - 1 = [ A b ~ c ~ T d ~ ] .

    DEVICES AND METHODS FOR PUNCTURED TRANSMISSION IN WIRELESS NETWORK

    公开(公告)号:US20240284505A1

    公开(公告)日:2024-08-22

    申请号:US18652534

    申请日:2024-05-01

    摘要: An access point, AP (110), configured to perform a sounding procedure with one or more associated non-AP stations (120) in a wireless local area network (100) is provided. The AP (110) comprises a processing circuitry (111) configured to generate a null data PPDU announcement, NDPA, frame, wherein the NDPA frame comprises for each of the one or more associated non-AP stations (120) a station info field. The station info field comprises a partial BW info subfield, including a feedback bitmap and an indication of a resolution and/or a range of the feedback bitmap with a 20 MHz or 40 MHz subchannel resolution for a Sounding NDP with a bandwidth of up to 320 MHz. The AP (110) further comprises a communication interface (113) configured to transmit the NDPA frame to the one or more associated non-AP stations (120). Moreover, a corresponding non-AP station (120) is disclosed.

    Devices and Methods for AP Cooperation in a Wireless Communication Network

    公开(公告)号:US20240267156A1

    公开(公告)日:2024-08-08

    申请号:US18638193

    申请日:2024-04-17

    IPC分类号: H04L1/1607 H04W84/12

    CPC分类号: H04L1/1621 H04W84/12

    摘要: A first access point (AP) in a wireless local area network (WLAN) is configured to communicate with one or more non-AP stations associated with the first AP and at least one second AP. The first AP includes a communication interface configured to receive, from the one or more non-AP stations, a first subset of uplink packets transmitted by the one or more non-AP stations to the first AP and receive, from the at least one second AP, a second subset of the uplink packets transmitted by the one or more non-AP stations to the first AP. Moreover, the first AP comprises a processing circuitry configured to determine the uplink packets based on the first subset and the second subset.

    Beam diversity by smart antenna with passive elements

    公开(公告)号:US11978963B2

    公开(公告)日:2024-05-07

    申请号:US17697996

    申请日:2022-03-18

    CPC分类号: H01Q21/205 H01Q9/16 H01Q19/24

    摘要: An antenna device includes a plurality of dipole antennas and a port. Each of the dipole antennas is connected to the port. The dipole antennas are arranged around the port. Each of the dipole antennas comprises two ends. The device further includes a plurality of passive elements. The ends of the dipole antennas and the passive elements are interchangeably arranged around the port such that each of the passive elements is situated between ends of two different antennas from the plurality of dipole antennas. One or more switches are configured to switch between an omnidirectional state, in which the ends of the dipole antennas are not connected to the plurality of passive elements, and a directional state, in which at least one end of one of the passive elements is connected to at least one end of one of the antennas.