公开(公告)号：US10225751B1

公开(公告)日：2019-03-05

申请号：US15353159

申请日：2016-11-16

Applicant: Google Inc.

Inventor： Junda Liu ,  Jiangbo Li ,  Victor Lin

IPC: H04L12/26 ,  H04W24/04 ,  H04L12/703 ,  H04W24/08

Abstract: Systems and methods of hybrid control of a computer network are provided. The system can comprise a controller and a plurality of nodes having an in-band control plane network arranged in a directed acyclic graph routing topology. A first node of the plurality of nodes can be configured to detect a link failure of a first link, the first link being controller-directed. The first node can reverse a second link to a second node from outward-directed to controller-directed such that the first node can communicate with the controller via the second link and the in-band control plane network. The first node can detect a reversal of the second link caused by the second node. The first node can determine that the in-band control plane network is partitioned. The first node can use an out-of-band control plane network to inform the controller that the in-band control plane network is partitioned.

公开(公告)号：US09942900B1

公开(公告)日：2018-04-10

申请号：US14552080

申请日：2014-11-24

Applicant: Google Inc.

Inventor： Junda Liu ,  Weihua Tan ,  Shishir Kumar Agrawal

IPC: H04W72/00 ,  H04W72/04 ,  H04W64/00 ,  H04W36/00 ,  H04W88/06

CPC classification number: H04W36/0072 ,  H04W48/14 ,  H04W48/18 ,  H04W64/00 ,  H04W64/006 ,  H04W72/0453 ,  H04W72/048 ,  H04W72/0486 ,  H04W88/06

Abstract: A system and method is disclosed that includes receiving connectivity information from a plurality of client devices connect to a network associated with a plurality of base stations; storing the connectivity information in one or more memories; determining a first location of a first device that desires to connect to a base station associated with the network; identifying a set of candidate bands and channels for connection to the base station based on the first location and the connectivity information; and transmitting the set of candidate bands and channels to the first device.