专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明授权

US08054813B2 Method of transmitting aggregated MAC MPDUs in WLAN system and system therefor 有权
标题翻译： WLAN系统中传输聚合MAC MPDU的方法及其系统
公开(公告)号：US08054813B2
公开(公告)日：2011-11-08
申请号：US11649113
申请日：2007-01-03
申请人： Young-Soo Kim , Sunghyun Choi , Alexey Sidelnikov , Kyung-Hun Jang , Hyo-Sun Hwang
发明人： Young-Soo Kim , Sunghyun Choi , Alexey Sidelnikov , Kyung-Hun Jang , Hyo-Sun Hwang
IPC分类号： H04W4/00
CPC分类号： H04L1/1614 , H04L1/1685 , H04W28/06
摘要： Provided are a system and method of transmitting an Aggregated Media Access Control (MAC) Protocol Data Unit (A-MPDU) in a Wireless Local Area Network (WLAN) system. A MAC layer divides service data transferred from an upper layer into a plurality of MPDUs, forms a single transmission frame including the sequentially arranged MPDUs, delimiter information for distinguishing each of the MPDUs, and ACK request information for requesting for a reception result of the MPDUs, and transmits the formed transmission frame to a recipient. Accordingly, service coverage is extended, and a transmission delay is minimized, resulting in improved service efficiency.
摘要翻译：提供了一种在无线局域网（WLAN）系统中发送聚合媒体接入控制（MAC）协议数据单元（A-MPDU）的系统和方法。 MAC层将从上层传送的业务数据划分为多个MPDU，形成包括顺序排列的MPDU的单一传输帧，用于区分每个MPDU的定界符信息，以及用于请求MPDU的接收结果的ACK请求信息并将形成的传输帧发送到接收者。因此，服务覆盖扩展，传输延迟最小化，从而提高服务效率。

52. 发明授权

US07471667B2 Coexistence of modulation schemes in a WLAN 有权
标题翻译：调制方案在WLAN中的共存
公开(公告)号：US07471667B2
公开(公告)日：2008-12-30
申请号：US10080156
申请日：2002-02-19
申请人： Olaf Hirsch , Atul Kumar Garg , Sunghyun Choi , Abraham Jan de Bart , Paul Gruijters
发明人： Olaf Hirsch , Atul Kumar Garg , Sunghyun Choi , Abraham Jan de Bart , Paul Gruijters
IPC分类号： H04L12/413 , H04Q7/20
CPC分类号： H04W74/02 , H04L5/023 , H04L5/1453 , H04L27/0008 , H04L27/2602 , H04W84/12 , H04W88/08
摘要： A local area network is provided where an OFDM station and DSSS/CCK station coexist. During a contention-free period both stations operate under the point coordination function rules as defined in the IEEE 802.11 specification. Both stations transmit data when polled by the access point. The contention-free period comprises a sub-contention period during which only the OFDM station communicate. During the sub-contention period the OFDM station operates under the distributed coordination function while the DSSS/CCK station waits to be polled by the access point before starting to communicate.
摘要翻译：提供了一个局域网，其中OFDM站和DSSS / CCK站共存。在无竞争期间，两个站都按照IEEE 802.11规范中定义的点协调功能规则运行。两个站点在接入点轮询时都会发送数据。无竞争时段包括只有OFDM站进行通信的次争用期。在子争用期间，OFDM站在分布式协调功能下运行，而DSSS / CCK站在开始通信之前等待接入点轮询。

53. 发明申请

US20070291692A1 Apparatus and method for managing resources in mobile communication system 有权
标题翻译：移动通信系统资源管理装置及方法
公开(公告)号：US20070291692A1
公开(公告)日：2007-12-20
申请号：US11800683
申请日：2007-05-07
申请人： Sunghyun Choi , Youngkyu Choi , Yond-Hwan Lee
发明人： Sunghyun Choi , Youngkyu Choi , Yond-Hwan Lee
IPC分类号： H04Q7/00
CPC分类号： H04W72/087
摘要： Disclosed is an apparatus and method for managing resources in a mobile communication system. The method includes classifying an overall frequency band into a plurality of segment types defined in time and frequency domains by considering a channel condition between a mobile station and the base station and a QoS level required by the mobile station, if data to be transmitted is data to be transmitted in real time, allocating the data to real-time type segments in such a manner as to satisfy a minimum QoS level for the data, and when there are real-time data remaining after allocating the data, and non-real-time type segments for allocating data to be transmitted in non-real time, diverting and allocating the real-time data to the non-real-time type segments.
摘要翻译：公开了一种用于管理移动通信系统中的资源的装置和方法。该方法包括：通过考虑移动台与基站之间的信道状况以及移动台所需的QoS等级，将总频带分类为在时域和频域中定义的多个分段类型，如果要发送的数据是数据要实时发送，以满足数据的最小QoS等级的方式将数据分配给实时类型段，并且在分配数据之后存在实时数据时，以及非实时类型段，用于分配要以非实时发送的数据的时间类型段，将实时数据转移并分配给非实时类型段。

54. 发明申请

US20070183445A1 Method for detecting hidden station in a wireless communication network and system therefor 有权
标题翻译：一种用于在无线通信网络中检测隐藏站的方法及其系统
公开(公告)号：US20070183445A1
公开(公告)日：2007-08-09
申请号：US11653605
申请日：2007-01-16
申请人： Youngsoo Kim , Sunghyun Choi , Jong-Ae Park , Dong-Jun Lee , Jung-Hoon Suh , Hyo-Sun Hwang , Kyung-Hun Jang
发明人： Youngsoo Kim , Sunghyun Choi , Jong-Ae Park , Dong-Jun Lee , Jung-Hoon Suh , Hyo-Sun Hwang , Kyung-Hun Jang
IPC分类号： H04L12/43
CPC分类号： H04L1/1607 , H04L1/1867 , H04L2001/0092 , H04W8/005 , H04W74/0808 , H04W84/12
摘要： Disclosed is a method for detecting a hidden station in a specific station constituting a wireless communication network that includes receiving a frame after a lapse of an idle state interval longer than a predetermined waiting time; determining that there is a hidden station, if a size of the received frame is equal to a size of an Acknowledge (ACK) frame; and determining that there is no hidden station, if the size of the received frame is not equal to the size of the ACK frame.
摘要翻译：公开了一种用于检测构成无线通信网络的特定站中的隐藏站的方法，该方法包括在经过等于预定等待时间的空闲状态间隔之后接收帧; 如果接收到的帧的大小等于应答（ACK）帧的大小，则确定存在隐藏站; 并且如果接收到的帧的大小不等于ACK帧的大小，则确定没有隐藏站。

55. 发明授权

US07120092B2 System and method for performing clock synchronization of nodes connected via a wireless local area network 有权
公开(公告)号：US07120092B2
公开(公告)日：2006-10-10
申请号：US10289758
申请日：2002-11-07
申请人： Javier del Prado Pavon , Sai Shankar Nandagopalan , Sunghyun Choi , Takashi Sato , Jeff Bennet
发明人： Javier del Prado Pavon , Sai Shankar Nandagopalan , Sunghyun Choi , Takashi Sato , Jeff Bennet
IPC分类号： G04C11/00 , H04J3/06 , H04L7/00
CPC分类号： H04J3/0655
摘要： A clock synchronization method and apparatus is disclosed for use in a communication system including a plurality of wireless nodes communicatively coupled via a wireless network, each of the plurality of wireless nodes having a local time base, and one of the plurality of wireless nodes being designated as a master node having a master time base which serves as a master clock against which the local time bases are synchronized. The clock synchronization method includes the steps of periodically transmitting synchronization frames to the plurality of non-master nodes so as to adjust the slave clocks associated with the respective non-master nodes. The synchronization frames are distributed from the master node at near-periodic intervals and includes a cycle time value that corresponds to the end of the previously transmitted synchronization frame. The slave clocks (i.e., non-master nodes) receiving the synchronization frame determine the cycle time value at the point of reception of the synchronization frame and adjusts their clocks by calculating a difference value between the received cycle time and a previously saved local cycle time value.

56. 发明申请

US20060056296A1 System and method for using a scheduler based on virtual frames 审中-公开
标题翻译：基于虚拟帧使用调度器的系统和方法
公开(公告)号：US20060056296A1
公开(公告)日：2006-03-16
申请号：US10537594
申请日：2003-12-03
申请人： Sai Nandagopalan , Sunghyun Choi , Atul Garg
发明人： Sai Nandagopalan , Sunghyun Choi , Atul Garg
IPC分类号： H04L12/26
CPC分类号： H04W72/1236 , H04W28/24 , H04W72/12 , H04W74/06
摘要： Disclosed is a method and system based on virtual frames for enabling a QAP to seamlessly operate between granting polls for upstream and sidestream traffic while sending downstream frames. A key feature of the scheduling method of the invention is that the scheduling method generates virtual frames to create transmission opportunity durations for granting polls for the upstream and sidestream traffic.
摘要翻译：公开了一种基于虚拟帧的方法和系统，用于使QAP能够在发送下游帧的同时为上游和侧流业务轮询提供无缝操作。本发明的调度方法的一个关键特征在于，调度方法生成虚拟帧，以创建用于为上游和侧流业务进行轮询的发送机会持续时间。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式