公开(公告)号：US10412643B1

公开(公告)日：2019-09-10

申请号：US16172747

申请日：2018-10-27

Applicant: Cisco Technology, Inc.

Inventor： Jun Liu ,  Qiang Yang ,  Jiewei Li ,  Xia Ke

IPC: H04W36/00 ,  H04W4/20 ,  H04W8/26 ,  H04W36/18 ,  H04W48/16

Abstract: Off channel scanning on workgroup bridge (WGB) devices for fast roaming may be provided. First, it may be determined, by a first WGB, that a second WGB is not off-channel. The second WGB may be peered with the first WGB. Next, the first WGB may perform channel scanning in response to determining that the second WGB is not off-channel. The first WGB may then prioritize a first WGB channel list based on results from the channel scanning performed by the first WGB. Next, the first WGB may roam while the second WGB in not off-channel, from a first access point to a second access point on a channel with the highest priority in the first WGB channel list.

公开(公告)号：US20250048177A1

公开(公告)日：2025-02-06

申请号：US18365451

申请日：2023-08-04

Applicant: Cisco Technology, Inc.

Inventor： Qiang Yang ,  Kathy Xia Ke ,  Yuping Wang ,  Jing Wang ,  Bin Yu

IPC: H04W28/04 ,  H04W28/02

Abstract: In one embodiment, a method for achieving zero packet loss in wireless roaming is implemented by a processor of a wireless client device in a system. The wireless client device establishes a first data plane in association with a first radio connected to a first access point and a second data plane in association with a second radio. The first data plane is different from and operates concurrently with the second data plane. The wireless client device determines a second access point by scanning a plurality of operating channels using the second radio. The wireless client device synchronizes the second data plane with a network controller to connect the second radio with the second data plane to the second access point. The wireless client device switches traffic of the first data plane connected to the first access point to the second data plane connected to the second access point.