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1. 发明授权

US08279895B2 Efficient channel architectures for multi-channel MAC protocols in wireless ad hoc networks 有权
标题翻译：用于无线自组织网络中的多信道MAC协议的高效信道架构
公开(公告)号：US08279895B2
公开(公告)日：2012-10-02
申请号：US12441643
申请日：2007-09-21
申请人： Carlos M. Cordeiro , Javier Del Prado Pavon
发明人： Carlos M. Cordeiro , Javier Del Prado Pavon
IPC分类号： H04J3/06
CPC分类号： H04W80/02 , H04B7/2656
摘要： The system (500), apparatus (400), and method of the present invention provide three architectures for logically organizing multiple channels: a parallel multi-channel superframe (PMS) (100), a sequential multi-channel superframe (SMS) (200), and a non-overlapping multi-channel superframe (NMS) (300). Each of these architectures arises from different trade-offs and is applicable to any multi-channel MAC protocol that is based on the concept of a superframe, e.g., IEEE 802.11 superframe.
摘要翻译：本发明的系统（500），装置（400）和方法提供了用于逻辑组织多个信道的三种架构：并行多信道超帧（PMS）（100），顺序多信道超帧（SMS））和不重叠的多信道超帧（NMS）（300）。这些架构中的每一个来自不同的权衡，并且适用于基于超帧（例如，IEEE 802.11超帧）的概念的任何多信道MAC协议。

2. 发明授权

US07974239B2 Generalized “evenly distributed MAS allocation” policy to support low-power UWB applications 有权
标题翻译：广泛的“均匀分布的MAS分配”政策来支持低功耗UWB应用
公开(公告)号：US07974239B2
公开(公告)日：2011-07-05
申请号：US11817830
申请日：2006-03-08
申请人： Richard Y. Chen , Takashi Sato , Javier Del Prado Pavon
发明人： Richard Y. Chen , Takashi Sato , Javier Del Prado Pavon
IPC分类号： H04W4/00
CPC分类号： H04W72/087 , H04L47/10 , H04L47/14 , H04L47/2475 , H04W24/00 , H04W52/0216 , H04W52/0219 , H04W74/04 , H04W84/12 , Y02D70/142
摘要： In order that media access slots MAS are allocated based on minimum latency requirements of, for example, not less than 4 ms, or on a medium utilization efficiency or power consumption requirement for a minimum reservation block length, both high-efficiency and low-latency schemes (or category) need to coexist within a superframe with fair support given to both. The maximization of contiguous available MAS between low-latency and high-efficiency schemes ensures that power saving and overhead risk are minimized without compromising the support for low-latency applications.
摘要翻译：为了基于例如不小于4ms的最小等待时间要求或者对于最小预留块长度的中等利用效率或功耗要求来分配媒体接入时隙MAS，高效率和低延迟计划（或类别）需要在一个超级框架内共存并给予两者公平的支持。连续可用的MAS在低延迟和高效率方案之间的最大化确保了节省能源和开销风险的最小化，而不会影响对低延迟应用程序的支持。

3. 发明申请

US20070121777A1 Methods to resolve tsf timer ambiguity of ieee 802.11e schedule element 有权
标题翻译：解决ieee 802.11e调度元素的tsf定时器模糊度的方法
公开(公告)号：US20070121777A1
公开(公告)日：2007-05-31
申请号：US10572925
申请日：2004-09-20
申请人： Javier Del Prado Pavon , Amjad Soomro , Sai Nandagopalan , Stefan Mangold , Zhun Zhong
发明人： Javier Del Prado Pavon , Amjad Soomro , Sai Nandagopalan , Stefan Mangold , Zhun Zhong
IPC分类号： G04F10/04
CPC分类号： H04W56/00 , H04W72/12
摘要： A plurality of methods, computer program product, and apparatus that use a lower 32 bit field of a 64-bit 802.11 TSF timer, so as to encode the reference time instant without the ambiguity as to whether there the reference time is referring to a future time or a past time. According to an aspect of the present invention, the fact that the low order 32 bits of the TSF timer wraps over in about 71 minutes is exploited to remove any ambiguity in the reference times contained in the Schedule Element frame. One method employs an algorithm base on distance between two reference points to determine whether the timer has wrapped around a time period, and another method uses a delay interval or a timeout to determine whether or not the TSF timer is wrapped or unwrapped. Another method includes determining whether an absolute value of X−O is less than, or greater than or equal to maximum value M/2.
摘要翻译：使用64位802.11 TSF定时器的低32位字段的多种方法，计算机程序产品和装置，以便对参考时刻进行编码，而不存在关于参考时间是指未来的歧义时间或过去的时间。根据本发明的一个方面，利用了大约71分钟内TSF定时器的低阶32位包裹的事实来消除包含在时间表元素帧中的参考时间中的任何歧义。一种方法采用基于两个参考点之间的距离的算法来确定定时器是否已经缠绕了一段时间，另一种方法使用延迟间隔或超时来确定TSF定时器是否被包装或解包。另一方法包括确定X-O的绝对值是否小于或大于或等于最大值M / 2。

4. 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.

5. 发明授权

US08422421B2 Automatic cancellation of BP merger in multi-band OFDM alliance (MBOA) ultra wide band (UWB) systems 失效
标题翻译：在多频带OFDM联盟（MBOA）超宽带（UWB）系统中自动取消BP合并
公开(公告)号：US08422421B2
公开(公告)日：2013-04-16
申请号：US11916234
申请日：2006-05-31
申请人： Chun-Ting Chou , Javier del Prado Pavon
发明人： Chun-Ting Chou , Javier del Prado Pavon
IPC分类号： H04J3/14
CPC分类号： H04B1/719
摘要： The current MBOA UWB MAC protocol requires a device that detects alien devices to include a BP Switch IE in its beacon so that its neighbors may learn the presence of the alien devices and follow that device to relocate their beacons in a coordinated fashion. However, during the transition period of beacon relocation, that device may decide to halt the relocation process as required by the standard and such decisions also have to be received by its neighbors. In such a case, a BP switch IE will be generated by that device which includes a BPST offset equal to a length of a superframe.
摘要翻译：目前的MBOA UWB MAC协议需要一种能够检测外来设备在其信标中包含BP交换机IE的设备，以便其邻居可以学习外来设备的存在并跟随该设备以协调的方式重新定位其信标。然而，在信标重定位的过渡期间，该设备可以根据标准的要求决定停止重定位过程，并且这样的决定也必须由其邻居接收。在这种情况下，BP开关IE将由该设备生成，该设备包括等于超帧长度的BPST偏移量。

6. 发明授权

US07995583B2 Apparatus and method for announcing a pending QoS service schedule to a wireless station 有权
标题翻译：用于向无线站通知未决QoS服务调度的装置和方法
公开(公告)号：US07995583B2
公开(公告)日：2011-08-09
申请号：US10314623
申请日：2002-12-09
申请人： Javier Del Prado Pavon , Amjad Soomro , Kiran Challapali , Saishankar Nandagopalan
发明人： Javier Del Prado Pavon , Amjad Soomro , Kiran Challapali , Saishankar Nandagopalan
IPC分类号： H04L12/28
CPC分类号： H04W72/1278 , H04W52/0216 , H04W72/1236 , Y02D70/142 , Y02D70/168 , Y02D70/23
摘要： An apparatus and method is disclosed for announcing to a wireless station in a wireless network that a Quality of Service (QoS) service schedule is pending for the wireless station. The apparatus of the invention comprises a hybrid coordinator that is capable of creating and sending to the wireless station an announcement of a pending Quality of Service (QoS) service schedule. The wireless station delays entering a power save mode of operation until the wireless station receives the QoS service schedule or until a selected timeout period expires.
摘要翻译：公开了一种用于向无线网络中的无线站通知服务质量（QoS）服务调度正在等待无线站的装置和方法。本发明的装置包括混合协调器，该混合协调器能够创建并向无线站发送未决服务质量（QoS）服务调度的通知。无线站延迟进入省电模式，直到无线站接收到QoS服务调度，或者直到选定的超时时间段到期。

7. 发明授权

US07756089B2 Fair rate allocation on an IEEE 802.11e communication medium 有权
标题翻译：在IEEE 802.11e通信介质上的公平速率分配
公开(公告)号：US07756089B2
公开(公告)日：2010-07-13
申请号：US10570538
申请日：2004-08-23
申请人： Chun Ting Chou , Sai Shankar Nandagopalan , Javier Del Prado Pavon
发明人： Chun Ting Chou , Sai Shankar Nandagopalan , Javier Del Prado Pavon
IPC分类号： H04J3/00
CPC分类号： H04W74/0816 , H04W28/10 , H04W74/08 , H04W84/12
摘要： Wireless stations (108-1-108-N) contending for exclusive access for a predetermined period of time (S232) to transmit on a communication medium (112) are regulated by a common external controller (104) using a single timing parameter (S204). Attempts at transmission access are preceded by respective delays that are expired simultaneously and at a common rate by the stations at times when the stations sense the medium to be idle (S224). The delays are pseudo-randomly selected to avoid collisions among stations in their respective access attempts (S208). Default, initial values of the respective delays (S204) applied to the stations, when multiplied by the respective expected number of transmission attempts by the stations over the long term over periods of time when no transmission attempt is unsuccessful, yield respective products equal to a constant value common to all stations (S312). The default values therefore serve as a knob by which the controller regulates air time opportunity.
摘要翻译：在通信介质（112）上进行发送的在预定时间段（S232）中进行专用访问的无线站（108-1-108-N）由公共外部控制器（104）使用单个定时参数来调节（S204 ）。在发送接入的尝试之前是在站感测媒体空闲的时刻（S224）的同时到达的各个延迟以及站的共同速率。延迟是伪随机选择的，以避免各个接入尝试中的站之间的冲突（S208）。默认情况下，应用于站的各个延迟的初始值（S204）当乘以在不发送尝试不成功的时间段内长时间站的相应预期发送次数时，产生等于所有站通用的常数值（S312）。因此，默认值用作控制器调节空气时间机会的旋钮。

8. 发明申请

US20080304521A1 INTERNAL SIGNALING METHOD TO SUPPORT CLOCK SYNCHRONIZATION OF NODES CONNECTED VIA A WIRELESS LOCAL AREA NETWORK 审中-公开
标题翻译：支持通过无线局域网连接的节点的时钟同步的内部信号方法
公开(公告)号：US20080304521A1
公开(公告)日：2008-12-11
申请号：US11758184
申请日：2007-06-05
申请人： JAVIER DEL PRADO PAVON , SUNGHYUN CHOI
发明人： JAVIER DEL PRADO PAVON , SUNGHYUN CHOI
IPC分类号： H04J3/07 , G04C11/00
CPC分类号： H04J3/0685 , H04L69/324 , H04W84/12 , H04W84/20
摘要： This invention discloses a set of internal signaling (i.e., management primitives) to support a clock-synchronization protocol for wirelessly synchronizing clock registers of wired or wireless nodes via a wireless local area network (i.e., 802.11 network). The clock synchronization is performed between two higher-layer protocol entities residing within two different wireless stations (STAs).
摘要翻译：本发明公开了一组内部信号（即，管理原语），以支持用于通过无线局域网（即802.11网络）无线同步有线或无线节点的时钟寄存器的时钟同步协议。在驻留在两个不同无线站（STA）中的两个高层协议实体之间执行时钟同步。

9. 发明申请

US20080037476A1 Method To Achieve Coexistence Between Centralized Tdma Mac And A Second Mac In Wireless Communication Systems 有权
标题翻译：在无线通信系统中实现集中式Tdma Mac与第二台Mac共存的方法
公开(公告)号：US20080037476A1
公开(公告)日：2008-02-14
申请号：US11570447
申请日：2005-06-10
申请人： Javier Del Prado Pavon , Kiran Challapali , Zhun Zhong
发明人： Javier Del Prado Pavon , Kiran Challapali , Zhun Zhong
IPC分类号： H04B7/212
CPC分类号： H04W16/14 , H04W28/16 , H04W36/16
摘要： Wireless networks and their method of implementation include a first network and one or more networks. The first network assigns designated time slots to each of the one or more networks during which at least one device of at least one of the networks may communicate with at least one other device of its respective network.
摘要翻译：无线网络及其实现方法包括第一网络和一个或多个网络。第一网络将指定的时隙分配给一个或多个网络中的每个网络，在该网络期间，至少一个网络的至少一个设备可以与其相应网络的至少一个其他设备进行通信。

10. 发明授权

US07274707B2 Coexistence of stations capable of different modulation schemes in a wireless local area network 失效
标题翻译：在无线局域网中能够具有不同调制方案的站的共存
公开(公告)号：US07274707B2
公开(公告)日：2007-09-25
申请号：US10278288
申请日：2002-10-23
申请人： Sunghyun Choi , Olaf Hirsch , Atul Garg , Javier del Prado Pavon
发明人： Sunghyun Choi , Olaf Hirsch , Atul Garg , Javier del Prado Pavon
IPC分类号： H04L12/413
CPC分类号： H04W74/02 , H04W84/12
摘要： A local-area network is provided where a plurality of OFDM stations and DSSS/CCK-only stations coexist. A beacon signal having a contention-free-period (CFP) is transmitted from an access point to the plurality of stations. The OFDM-modulated data is transmitted to the plurality of stations before the CFP ends, and after the CFP period ends, the DSSS/CCK-modulated data is transmitted, thereby preventing collisions between the stations.
摘要翻译：提供了一个局域网，其中多个OFDM站和仅DSSS /仅CCK站共存。具有无争用周期（CFP）的信标信号从接入点发送到多个站。在CFP结束之前，OFDM调制数据被发送到多个站，在CFP周期结束之后，发送DSSS / CCK调制数据，从而防止站点之间的冲突。

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