公开(公告)号：US20210075534A1

公开(公告)日：2021-03-11

申请号：US16562598

申请日：2019-09-06

Applicant: Cisco Technology Inc.

Inventor： Huaiyi Wang ,  Matthew Aaron Silverman ,  Zhigang Gao ,  Evgeny Yankevich

IPC: H04J11/00 ,  H04L5/00 ,  H04L25/03

Abstract: A wireless node in a wireless communication network. The wireless node includes one or more interfaces configured to receive wireless transmissions, a memory comprising instructions, and a hardware processor. The wireless node samples a received wireless transmission into a plurality of time-based subdivisions. for each subdivision of the wireless transmission the wireless node determines a cross-correlation between the subdivision and a local syncword. The local syncword is constructed to correlate to any primary synchronization signal, PSS, of a plurality of PSSs defined for synchronization in the wireless network. The wireless node, based on the cross-correlation, determines whether one PSS of the plurality of PSSs is present in the subdivision of the wireless transmission.

公开(公告)号：US10798585B2

公开(公告)日：2020-10-06

申请号：US16287207

申请日：2019-02-27

Applicant: Cisco Technology, Inc.

Inventor： Qing Zhao ,  Dantong Liu ,  Fred Jay Anderson ,  Matthew Aaron Silverman

IPC: H04W16/10 ,  H04W72/04

Abstract: A distributed controller of local radio resources implements a hybrid FFR system. The distributed controller provides user channel information to a central controller of regional radio resources. The distributed controller also obtains an FFR plan from the central controller. The FFR plan designates for an access point associated with the distributed controller, a central frequency band, an edge frequency band, and a distribution of user devices connected to the access point. The distribution indicates whether each user device communicates with the access point via the central frequency band or via the edge frequency band. The distributed controller provisions the access pint to connect to the user devices according to the FFR plan, and adjusts the distribution of user devices locally based on a change in the user channel information.

公开(公告)号：US10070354B2

公开(公告)日：2018-09-04

申请号：US14967483

申请日：2015-12-14

Applicant: Cisco Technology, Inc.

Inventor： John Martin Blosco ,  Matthew Aaron Silverman ,  John Matthew Swartz ,  Joshua David Suhr ,  Paul J. Stager

IPC: H04W36/06 ,  H04L1/00 ,  H04W24/08 ,  H04W28/04 ,  H04W36/04 ,  H04W36/30 ,  H04L12/26 ,  H04L12/24 ,  H04W36/00 ,  H04W84/12

Abstract: Noise floor degradation detection may be provided. First, an incremental packet loss rate for a secondary radio may be calculated that indicates an impact on packet reception on the secondary radio due to transmissions by a primary radio. The secondary radio and the primary radio may comprise an access point. Next, it may be determined that the incremental packet loss rate is greater than a predetermined value. A configuration of the access point may be changed in response to determining that the incremental packet loss rate is greater than the predetermined value.