公开(公告)号：US20230006630A1

公开(公告)日：2023-01-05

申请号：US17931394

申请日：2022-09-12

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Kehui CAI ,  Hongli ZHANG ,  Farhan HASNAIN

IPC: H03H9/00 ,  H03H3/02 ,  H03H9/70

Abstract: Examples described herein provide selective filtering by a network device for continuous 5 GHz and 6 GHz operation. Examples may include receiving, by the network device, a first signal in a 5 GHz band, and generating, by the network device, a second signal in a 6 GHz band. Examples may include selecting, by the network device, a first filter or a second filter to be applied the first signal in the 5 GHz band, wherein the first filter allows a lower frequency band to pass than the second filter in the 5 GHz band, selecting, by the network device, a third filter or a fourth filter to be applied to the second signal in the 6 GHz band, wherein the third filter allows a lower frequency band to pass than the fourth filter in the 6 GHz band, and simultaneously applying, by the network device, the selected first or second filter to the first signal and the selected third or fourth filter to the second signal.

公开(公告)号：US20230179449A1

公开(公告)日：2023-06-08

申请号：US18166619

申请日：2023-02-09

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Nitin A. CHANGLANI ,  Farhan HASNAIN ,  Eldad PERAHIA ,  Deven PATEL

IPC: H04L25/02 ,  H04L25/06 ,  H04L5/00

CPC classification number: H04L25/0224 ,  H04L25/063 ,  H04L5/0007

Abstract: Systems and techniques are described that are directed to filter frequency response shift compensation, including compensating for shifting in the rejection band of the filter. Compensation for the shifting in the rejection band can include applying a pre-distortion to attenuate edge resource units (RUs), and applying PHY Protocol Data Unit (PPDU) scheduling schemes. For example, a PPDU scheduling scheme reduce bandwidth in the channel, thereby dropping the out of band RUs. Front ends provide feedback to a respective radio, which allows that radio to apply the appropriate pre-distortion. The front ends can include one or more filters enabling frequency domain coexistence between collocated radios operating in the differing Wi-Fi bands, and a coupler that provides the feedback indicating the frequency response shift to a radio. The radio can then apply a digital pre-distortion to compensate for the shifting in the rejection band.