公开(公告)号：US20150293793A1

公开(公告)日：2015-10-15

申请号：US14667204

申请日：2015-03-24

Applicant: Samsung Electronics Co., Ltd.

Inventor： Tushar VRIND ,  Balaji Somu Kandaswamy ,  Raju Siddappa Udava ,  Vankata Raju Indukuri

IPC: G06F9/50

CPC classification number: G06F9/4887

Abstract: Method and apparatuses are provided for providing preemptive task scheduling for a Real Time Operating System (RTOS). A two-level priority is assigned to each task that is created. The two-level priority includes a kernel priority and a user-defined priority. A priority bitmap corresponding to the kernel priority is created. A priority bit in the priority bitmap is enabled. The priority bit indicates a status of a respective task

Abstract translation: 提供了用于为实时操作系统（RTOS）提供抢占任务调度的方法和装置。 为创建的每个任务分配两级优先级。 两级优先级包括内核优先级和用户定义的优先级。 创建与内核优先级相对应的优先级位图。 优先级位图中的优先级位被使能。 优先级位表示相应任务的状态

公开(公告)号：US09529625B2

公开(公告)日：2016-12-27

申请号：US14676366

申请日：2015-04-01

Applicant: Samsung Electronics Co., Ltd.

Inventor： Tushar Vrind ,  Balaji Somu Kandaswamy ,  Raju Siddappa Udava ,  Venkata Raju Indukuri

IPC: G06F9/46 ,  G06F9/48 ,  G06F9/50

CPC classification number: G06F9/4881 ,  G06F9/461 ,  G06F9/5011 ,  G06F9/5016

Abstract: A method and system for providing memory management in a Real-Time Operating System (RTOS) based system are provided. The method includes creating a plurality of tasks with a two level stack scheme comprising a first level stack and a second level stack, scheduling a first task for execution by moving a stack pointer from the first level stack to the second level stack, determining whether the first task is pre-empted, allocating the second level stack to the first task in a second state if the first task is not pre-empted, changing an active task for execution, determining whether the first task relinquishes control from the second state and is waiting for a resource, moving the stack pointer back from the second level stack to the first level stack if the first task relinquishes itself and providing the second level stack for use by a second task.

Abstract translation: 提供了一种用于在基于实时操作系统（RTOS）的系统中提供存储器管理的方法和系统。 该方法包括通过包括第一级堆栈和第二级堆栈的两级堆栈方案来创建多个任务，通过将堆栈指针从第一级堆栈移动到第二级堆栈来调度第一任务以执行，确定是否 首先任务被抢占，如果第一任务没有被抢占，则将第二级堆栈分配给第一任​​务，改变要执行的活动任务，确定第一任务是否从第二状态放弃控制，并且是第 等待资源，如果第一个任务放弃自身并提供第二级堆栈供第二个任务使用，则将堆栈指针从第二级堆栈移回到第一级堆栈。

公开(公告)号：US10248456B2

公开(公告)日：2019-04-02

申请号：US15374603

申请日：2016-12-09

Applicant: Samsung Electronics Co., Ltd.

Inventor： Tushar Vrind ,  Balaji Somu Kandaswamy ,  Raju Siddappa Udava ,  Venkata Raju Indukuri

IPC: G06F9/46 ,  G06F9/48 ,  G06F9/50

Abstract: A method and system for providing memory management in a Real-Time Operating System (RTOS) based system are provided. The method includes creating a plurality of tasks with a two level stack scheme comprising a first level stack and a second level stack, scheduling a first task for execution by moving a stack pointer from the first level stack to the second level stack, determining whether the first task is pre-empted, allocating the second level stack to the first task in a second state if the first task is not pre-empted, changing an active task for execution, determining whether the first task relinquishes control from the second state and is waiting for a resource, moving the stack pointer back from the second level stack to the first level stack if the first task relinquishes itself and providing the second level stack for use by a second task.

公开(公告)号：US09749816B2

公开(公告)日：2017-08-29

申请号：US14663773

申请日：2015-03-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Vinay Kumar Shrivastava ,  Raju Siddappa Udava

IPC: H04H20/71 ,  H04W4/06 ,  H04W72/00

CPC classification number: H04W4/06 ,  H04W72/005

Abstract: A method of Physical Multicast Channel (PMCH) decoding for Multicast Broadcast Single Frequency Network (MBSFN) by a UE includes decoding a Transport Block (TB) in a first sub-frame of a Multicast Channel Scheduling Period (MSP) by a Physical (PHY) layer in the UE; providing the decoded TB to a Media Access Control (MAC) layer; performing blind decoding on all received MBSFN sub-frames, until the PHY layer receives PMCH scheduling configuration from the MAC layer; selecting at least one Logical Channel IDentifier (LCID) and Multicast Transport Channel (MTCH) scheduling information for each LCID by decoding a Multicast Channel Scheduling Information Protocol Data Unit (MSI PDU), the MSI PDU present in the decoded TB; building a PMCH scheduling configuration by the MAC layer based on the selected at least one LCID and the MTCH scheduling information; passing the PMCH scheduling configuration to the PHY layer by the MAC layer; and applying the PMCH scheduling configuration.

公开(公告)号：US09606833B2

公开(公告)日：2017-03-28

申请号：US14667204

申请日：2015-03-24

Applicant: Samsung Electronics Co., Ltd.

Inventor： Tushar Vrind ,  Balaji Somu Kandaswamy ,  Raju Siddappa Udava ,  Venakata Raju Indukuri

IPC: G06F9/46 ,  G06F9/48

CPC classification number: G06F9/4887

Abstract: Method and apparatuses are provided for providing preemptive task scheduling for a Real Time Operating System (RTOS). A two-level priority is assigned to each task that is created. The two-level priority includes a kernel priority and a user-defined priority. A priority bitmap corresponding to the kernel priority is created. A priority bit in the priority bitmap is enabled. The priority bit indicates a status of a respective task.