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1. 发明申请

US20060029023A1 Dynamic channel selection scheme for IEEE 802.11 WLANs 审中-公开
公开(公告)号：US20060029023A1
公开(公告)日：2006-02-09
申请号：US11246577
申请日：2005-10-07
申请人： Gerard Cervello , Sunghyun Choi , Stefan Mangold , Amjad Soomro
发明人： Gerard Cervello , Sunghyun Choi , Stefan Mangold , Amjad Soomro
IPC分类号： H04Q7/00 , H04Q7/24
CPC分类号： H04W72/02 , H04W24/10 , H04W48/08 , H04W72/08 , H04W84/12 , H04W92/10
摘要： Disclosed is a method and system for dynamically selecting a communication channel between an access point (AP) and a plurality of stations (STAs) in an IEEE 802.11 wireless local area network (WLAN). The method includes the steps of: determining whether a new channel between the AP and STAs within a particular basic service set (BSS) is needed; requesting a channel signal quality measure to some of the plurality of stations by the AP; reporting a channel signal quality report back to the AP based on a received signal strength indication (RSSI) and a packet error rate (PER) of all channels detected by the stations within the BSS; selecting a new channel based on the channel quality report for use in communication between the AP and the plurality of stations.

2. 发明授权

US07206840B2 Dynamic frequency selection scheme for IEEE 802.11 WLANs 有权
标题翻译： IEEE 802.11 WLAN的动态频率选择方案
公开(公告)号：US07206840B2
公开(公告)日：2007-04-17
申请号：US09976339
申请日：2001-10-12
申请人： Sunghyun Choi , Stefan Mangold , Amjad Soomro
发明人： Sunghyun Choi , Stefan Mangold , Amjad Soomro
IPC分类号： G06F15/173
CPC分类号： H04W36/06 , H04W16/14 , H04W84/12
摘要： Disclosed is a method and system for dynamically selecting a communication channel between an access point (AP) and a plurality of stations (STAs) in an IEEE 802.11 wireless local area network (WLAN). The method includes the steps of: determining whether a new channel to be used by the plurality of STAs is needed; measuring the channel quality of a plurality of frequency channels by at least one of the plurality of STAs; reporting the quality of the plurality of frequency channels in terms of a received signal strength indication (RSSI), Clear Channel Assessment (CCA) busy periods and periodicity; and, selecting one of the candidate channels based on the channel quality report for use in communication between the AP and the plurality of STAs.
摘要翻译：公开了用于在IEEE 802.11无线局域网（WLAN）中动态地选择一个接入点（AP）和多个站（STA）之间的通信信道的方法和系统。该方法包括以下步骤：确定是否需要由多个STA使用的新信道; 通过所述多个STA中的至少一个来测量多个频率信道的信道质量; 根据接收信号强度指示（RSSI），清除信道评估（CCA）繁忙周期和周期性来报告多个频率信道的质量; 以及基于用于AP与多个STA之间的通信中的信道质量报告来选择一个候选信道。

3. 发明授权

US07620405B2 Method and system for providing a single unified channel quieting/measurement request element in an 802.11 wireless local area network 有权
标题翻译：用于在802.11无线局域网中提供单个统一信道静止/测量请求单元的方法和系统
公开(公告)号：US07620405B2
公开(公告)日：2009-11-17
申请号：US10505691
申请日：2003-03-07
申请人： Amjad Soomro , Sunghyun Choi
发明人： Amjad Soomro , Sunghyun Choi
IPC分类号： H04B7/212
CPC分类号： H04W24/00 , H04W24/06 , H04W84/12
摘要： A channel quieting/measurement request element is provided for use in a wireless local area network. The unified element of the invention integrates a dual capability for performing channel quieting and for making measurement requests of one or more stations in the network. According to another aspect of the invention, a conventional channel quieting element is modified to include provisions for defining an offset time and an offset duration interval for performing channel quieting.
摘要翻译：提供了一种用于无线局域网的信道静止/测量请求单元。本发明的统一要素集成了用于执行信道静止和用于对网络中的一个或多个站进行测量请求的双重能力。根据本发明的另一方面，修改传统的信道静音元件以包括用于定义偏移时间和用于执行信道静止的偏移持续时间间隔的设置。

4. 发明授权

US07245592B2 Aligning 802.11e HCF and 802.11h TPC operations 有权
标题翻译：对齐802.11e HCF和802.11h TPC操作
公开(公告)号：US07245592B2
公开(公告)日：2007-07-17
申请号：US10119577
申请日：2002-04-10
申请人： Amjad Soomro , Sunghyun Choi , Javier del Prado Pavon
发明人： Amjad Soomro , Sunghyun Choi , Javier del Prado Pavon
IPC分类号： G08C17/00
CPC分类号： H04W52/367 , H04W84/12 , H04W92/18
摘要： A granted TxOP holder transmits the first frame of a QSTA-to-QSTA communication at a power level sufficient to ensure correct reception by the destination and at least detection by the HC, and then, with exceptions, transmits subsequent frames at a power level merely sufficient to ensure correct reception by the destination, regardless of reception or detection by the HC. Subsequent frames that must be received by the HC, such as those changing the TC queue size or requesting extension of the current TxOP, are transmitted at a power sufficient to ensure reception by the HC as well as the destination, as are the last frame(s). The HC is constrained from reclaiming the channel unconditionally merely because of failure to detect activity, and recovery is limited to the TxOP holder.
摘要翻译：授权的TxOP持有者以足以确保目的地的正确接收和至少由HC进行的检测的功率水平发送QSTA至QSTA通信的第一帧，然后例如仅在功率级别发送后续帧足以确保目的地的正确接收，不管HC接收或检测。必须由HC接收的后续帧，例如改变TC队列大小或请求扩展当前TxOP的后续帧，以足以确保HC以及目的地的接收的功率发送，如同最后一帧（ s）。 HC被限制在无条件地回收信道，仅因为无法检测到活动，并且恢复仅限于TxOP持有者。

5. 发明申请

US20050111415A1 Method and system for providing a single unified channel quieting/measurement request element in an 802.11 wireless local area network 有权
标题翻译：用于在802.11无线局域网中提供单个统一信道静止/测量请求单元的方法和系统
公开(公告)号：US20050111415A1
公开(公告)日：2005-05-26
申请号：US10505691
申请日：2003-03-07
申请人： Amjad Soomro , Sunghyun Choi
发明人： Amjad Soomro , Sunghyun Choi
IPC分类号： H04W24/06 , H04B17/00 , H04L12/28 , H04Q7/24
CPC分类号： H04W24/00 , H04W24/06 , H04W84/12
摘要： A channel quieting/measurement request element is provided for use in a wireless local area network. The unified element of the invention integrates a dual capability for performing channel quieting and for making measurement requests of one or more stations in the network. According to another aspect of the invention, a conventional channel quieting element is modified to include provisions for defining an offset time and an offset duration interval for performing channel quieting.
摘要翻译：提供了一种用于无线局域网的信道静止/测量请求单元。本发明的统一要素集成了用于执行信道静止和用于对网络中的一个或多个站进行测量请求的双重能力。根据本发明的另一方面，修改传统的信道静音元件以包括用于定义偏移时间和用于执行信道静止的偏移持续时间间隔的设置。

6. 发明授权

US07756090B2 System and method for performing fast channel switching in a wireless medium 有权
标题翻译：用于在无线介质中执行快速通道切换的系统和方法
公开(公告)号：US07756090B2
公开(公告)日：2010-07-13
申请号：US10261889
申请日：2002-09-30
申请人： Javier del Prado Pavon , Amjad Soomro , Sunghyun Choi
发明人： Javier del Prado Pavon , Amjad Soomro , Sunghyun Choi
IPC分类号： H04W4/00
CPC分类号： H04W74/0875 , H04W24/00
摘要： The present invention relates to a method for performing fast channel switching in a wireless local area network (WLAN). The method generally includes the steps of: determining that the wireless medium has been idle during a PCF interframe space (PIFS) period, transmitting a first management frame during a slot time following the PIFS period; wherein the transmission at said slot time substantially guarantees priority access said wireless medium; and performing fast channel switching in the network in accordance with directives contained within the management frame. Fast channel switching as defined herein includes one of quieting the current channel and/or switching from a current channel of operation to a new channel of operation. The method overcomes the latencies associated with contention based services, such as the DCF service. The method may further include the additional step of transmitting one or more additional management frames, whose format is identical to said first management frame, each additional frame preferably separated by the PIFS interframe space to provide a higher degree of transmission reliability. The method is preferably performed at an access point (AP) in an infrastructure network or in an STA in an ad-hoc network.
摘要翻译：本发明涉及一种在无线局域网（WLAN）中执行快速信道切换的方法。该方法通常包括以下步骤：在PCF帧间间隔（PIFS）期间确定无线介质已经空闲，在PIFS周期之后的时隙时间期间发送第一管理帧; 其中所述时隙时间的传输基本上保证优先接入所述无线介质; 以及根据包含在管理帧内的指令在网络中执行快速信道切换。如本文所定义的快速通道切换包括将当前通道静音和/或从当前操作通道切换到新的操作通道之一。该方法克服了与基于竞争的服务相关联的延迟，例如DCF服务。该方法还可以包括附加步骤，其发送一个或多个其格式与所述第一管理帧相同的附加管理帧，每个附加帧优选由PIFS帧间间隔分隔，以提供更高程度的传输可靠性。该方法优选地在基础设施网络中的接入点（AP）或自组织网络中的STA中执行。

7. 发明授权

US07120138B2 Dynamic frequency selection with recovery for a basic service set network 有权
公开(公告)号：US07120138B2
公开(公告)日：2006-10-10
申请号：US10093300
申请日：2002-03-07
申请人： Amjad Soomro , Sunghyun Choi
发明人： Amjad Soomro , Sunghyun Choi
IPC分类号： H04J1/00 , H04Q7/00 , H04H1/04
CPC分类号： H04W72/02 , H04W36/06 , H04W48/08 , H04W84/12
摘要： Dynamic frequency selection for an IEEE 802.11 basic service set network is enabled by a dynamic frequency selection (DFS) element within beacon and probe response frames defining a DFS owner, a DFS interval specifying the time until channel switch in beacon intervals, a DFS count specifying a time in beacon intervals until the DFS owner initiates selection of the next channel frequency from the supported channel set, and a DFS recovery interval specifying a time after the end of the DFS interval when recovery procedures are initiated if no channel switch information was received during that DFS interval. Channel switch information is presented in beacons following the end of the channel selection process, and within beacons during the DFS recovery interval.

8. 发明申请

US20060036434A1 Resource reservation in transmission networks 审中-公开
标题翻译：传输网络中的资源预留
公开(公告)号：US20060036434A1
公开(公告)日：2006-02-16
申请号：US10528347
申请日：2003-09-09
申请人： Klaus May , Stefan Mangold , Guido Hiertz , Bernhard Walke , Wolfgang Budde , Sunghyun Choi
发明人： Klaus May , Stefan Mangold , Guido Hiertz , Bernhard Walke , Wolfgang Budde , Sunghyun Choi
IPC分类号： G10L21/00
CPC分类号： H04L1/0009 , H04L1/0003 , H04L1/0025 , Y02D50/10
摘要： The present invention provides for a reliable communication over radio networks co-existing in the same frequency band. According to the present invention, a transceiver operating according to another transmission scheme may transmit a frame in the IEEE 802.11 format. This frame may comprise an error. Upon receipt of this frame by an IEEE 802.11 station, this station may defer from channel access for a period of time.
摘要翻译：本发明提供了在相同频带中共存的无线电网络上的可靠通信。根据本发明，根据另一传输方案操作的收发机可以以IEEE 802.11格式发送帧。该帧可能包含错误。在IEEE 802.11站接收到该帧时，该站可能延迟一段时间的信道访问。

9. 发明授权

US06985465B2 Dynamic channel selection scheme for IEEE 802.11 WLANs 失效
公开(公告)号：US06985465B2
公开(公告)日：2006-01-10
申请号：US09901871
申请日：2001-07-09
申请人： Gerard G Cervello , Sunghyun Choi , Stefan Mangold , Amjad Ali Soomro
发明人： Gerard G Cervello , Sunghyun Choi , Stefan Mangold , Amjad Ali Soomro
IPC分类号： H04Q7/00
CPC分类号： H04W72/02 , H04W24/10 , H04W48/08 , H04W72/08 , H04W84/12 , H04W92/10
摘要： Disclosed is a method and system for dynamically selecting a communication channel between an access point (AP) and a plurality of stations (STAs) in an IEEE 802.11 wireless local area network (WLAN). The method includes the steps of: determining whether a new channel between the AP and STAs within a particular basic service set (BSS) is needed; requesting a channel signal quality measure to some of the plurality of stations by the AP; reporting a channel signal quality report back to the AP based on a received signal strength indication (RSSI) and a packet error rate (PER) of all channels detected by the stations within the BSS; selecting a new channel based on the channel quality report for use in communication between the AP and the plurality of stations.

10. 发明授权

US09414402B2 Method of communication based on controlling receive chain in wireless local area network and apparatus for the same 有权
标题翻译：基于在无线局域网中控制接收链的通信方法及其设备
公开(公告)号：US09414402B2
公开(公告)日：2016-08-09
申请号：US14000185
申请日：2012-02-09
申请人： Ill Soo Sohn , Sunghyun Choi , Seungmin Yoo , Hyewon Lee , Munhwan Choi , Yong Ho Seok , Okhwan Lee
发明人： Ill Soo Sohn , Sunghyun Choi , Seungmin Yoo , Hyewon Lee , Munhwan Choi , Yong Ho Seok , Okhwan Lee
IPC分类号： H04W4/00 , H04W72/12 , H04B7/08 , H04L1/06 , H04B7/04 , H04W84/12
CPC分类号： H04W72/1263 , H04B7/0452 , H04B7/0877 , H04L1/06 , H04W84/12
摘要： A method of communication based on a receive chain control, performed by a receiver, in a wireless local area network is provided. The method includes: receiving a frame from a transmitter, the frame indicating a multi receive chain operation, activating at least one receive chain, each receive chain processing a received signal transmitted through each spatial stream, and receiving at least one data field from the transmitter through the at least one activated receive chain.
摘要翻译：提供了一种基于由无线局域网中的接收机执行的接收链控制的通信方法。该方法包括：从发射机接收帧，指示多接收链操作的帧，激活至少一个接收链，每个接收链处理通过每个空间流发送的接收信号，以及从发射机接收至少一个数据场通过至少一个激活的接收链。

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