公开(公告)号：US20170192812A1

公开(公告)日：2017-07-06

申请号：US15359374

申请日：2016-11-22

Applicant: Foundation of Soongsil University-Industry Cooperation

Inventor： Jiman HONG ,  Taegyu HWANG

IPC: G06F9/455 ,  G06F9/48

CPC classification number: G06F9/45558 ,  G06F9/4881 ,  G06F9/5077 ,  G06F2009/45579 ,  G06F2009/45591

Abstract: A method for scheduling a virtual machine monitor having a scheduler, a task characteristic evaluation unit, and a credit management unit is provided. The virtual machine monitor drives at least two domains. The method includes scheduling, by the scheduler, the at least two domains, if an I/O event of each of the at least two domains in which the scheduling is performed is delayed, evaluating, by the task characteristic evaluation unit, a characteristic of a task of the at least two domains based on at least one of a central processing unit (CPU) intensive degree and an input/output (I/O) intensive degree of the at least two domains, differentially determining, by the credit management unit, an amount of credit in which each of the at least two domains retains according to the characteristic of the task, and determining, by the scheduler, an application frequency of a boost mechanism applied to the at least two domains according to the amount of credit.

公开(公告)号：US20170169088A1

公开(公告)日：2017-06-15

申请号：US15359263

申请日：2016-11-22

Applicant: Foundation of Soongsil University-Industry Cooperation

Inventor： Jiman HONG ,  Daeshin PARK ,  Kisu KIM

IPC: G06F17/30 ,  G06F9/50

CPC classification number: G06F16/275 ,  G06F9/5005 ,  G06F16/27

Abstract: A system for dynamically replicating data for a heterogeneous Hadoop is provided. The system includes a name node having a replication manager. The replication manager calculates a probability that a map task is allocated to a map task slot of a data node that stores an input data block of the map task out of a plurality of map task slots of data nodes by using a number of the map task slots in the Hadoop clusters comprised of heterogeneous clusters, and dynamically replicates data based on the probability.

公开(公告)号：US20170048678A1

公开(公告)日：2017-02-16

申请号：US15232431

申请日：2016-08-09

Applicant: Foundation of Soongsil University-Industry Cooperation

Inventor： Jiman HONG ,  Sanghoon CHOI ,  Eunseok CHOI ,  Taegyu HWANG

IPC: H04W4/04 ,  H04W4/02

CPC classification number: H04W4/30 ,  H04W4/023 ,  H04W4/04

Abstract: Provided is a location tracking system and a method of operating the location tracking system. The location tracking system selects either an indoor location tracking mode or an outdoor location tracking mode according to whether a user is currently indoors or outdoors and tracks the location of the user. The location tracking system tracks an indoor location of the user using access point (AP) signal intensity information and a step detection technique when tracking the location of a user in the indoor location tracking mode, and tracks the outdoor location of a user using a global positioning system (GPS) and a step detection technique when tracking the location of the user in the outdoor location tracking mode.

Abstract translation: 提供了位置跟踪系统和操作位置跟踪系统的方法。 位置跟踪系统根据用户当前在室内还是室外选择室内位置跟踪模式或室外位置跟踪模式，并且跟踪用户的位置。 位置跟踪系统使用接入点（AP）信号强度信息跟踪用户的室内位置，并且当在室内位置跟踪模式中跟踪用户的位置时跟踪步骤检测技术，并且使用全局 定位系统（GPS）和跟踪户外位置跟踪模式下用户位置的步进检测技术。