公开(公告)号：US07895494B2

公开(公告)日：2011-02-22

申请号：US11614764

申请日：2006-12-21

申请人： Stephen E. Terry ,  Arty Chandra

发明人： Stephen E. Terry ,  Arty Chandra

IPC分类号： H04L1/18 ,  G08C25/02

CPC分类号： H04L1/1812 ,  H04L1/1848 ,  H04L1/1874 ,  H04L2001/0092

摘要： A method and system for implementing hybrid automatic repeat request (H-ARQ)-assisted automatic repeat request (ARQ) in a wireless communication system are disclosed. When an H-ARQ negative acknowledgement (NACK)-to-positive acknowledgement (ACK) error occurs, the H-ARQ receiver sends an H-ARQ NACK-to-ACK error indicator to the H-ARQ transmitter unless a maximum retransmission limit has reached, a maximum time for delivery has expired or a lifespan of the failed packet has expired. The H-ARQ transmitter sends a local NACK to the ARQ transmitter so that the failed packet is recovered at an ARQ level. The H-ARQ receiver sends a local NACK to the ARQ receiver if the H-ARQ receiver does not receive the failed packet before certain conditions occur. The ARQ receiver may send a status report to the ARQ transmitter for recovery of the failed packet.

摘要翻译： 公开了一种在无线通信系统中实现混合自动重传请求（H-ARQ）辅助自动重传请求（ARQ）的方法和系统。 当发生H-ARQ否定确认（NACK）到肯定确认（ACK）错误时，H-ARQ接收机向H-ARQ发射机发送H-ARQ NACK到ACK错误指示符，除非最大重发限制具有 达到，交货的最大时间已过期或故障包的寿命已过期。 H-ARQ发射机向ARQ发射机发送本地NACK，从而在ARQ级别恢复故障分组。 如果在某些情况发生之前H-ARQ接收机没有收到故障分组，则H-ARQ接收机向ARQ接收机发送本地NACK。 ARQ接收机可以向ARQ发射机发送状态报告以恢复故障分组。

公开(公告)号：US20090296619A1

公开(公告)日：2009-12-03

申请号：US12539837

申请日：2009-08-12

申请人： Mohammed Sammour ,  Sudheer A. Grandhi ,  Arty Chandra

发明人： Mohammed Sammour ,  Sudheer A. Grandhi ,  Arty Chandra

IPC分类号： G08C17/00

CPC分类号： H04W52/0209 ,  H04W4/08 ,  H04W8/186 ,  H04W52/0216 ,  H04W52/0219 ,  H04W52/0229 ,  H04W84/12 ,  H04W88/08 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/22

摘要： A method for addressing groups of stations in a wireless communication system begins by assigning the stations in the system into a number of groups. A group identifier is signaled to each station and the group identifier is indicated in a frame for each group that has data in the frame. The addressing method can be applied to power savings for the station, wherein the station enters a power saving mode if the group identifier for the station is not present in the frame.

摘要翻译： 一种在无线通信系统中寻址站组的方法，首先将系统中的站分配成多个组。 组标识符被发信号通知给每个站，并且组帧标识符在帧中指示具有帧中的数据的每个组。 寻址方法可以应用于该站的节电，其中如果该站的组标识符不存在于该帧中，则该站进入省电模式。

公开(公告)号：US07613153B2

公开(公告)日：2009-11-03

申请号：US10932682

申请日：2004-09-02

申请人： Arty Chandra ,  Maged Zaki

发明人： Arty Chandra ,  Maged Zaki

IPC分类号： H04W4/00

CPC分类号： H04L47/6215 ,  H04L47/50 ,  H04L47/56 ,  H04L47/6255 ,  H04W72/1236 ,  H04W72/1242 ,  H04W88/10

摘要： The present invention is directed to methods and wireless communication devices that are configured to enhance communication capacity in a wireless network. In one aspect of the invention various scheduling processes and schedulers for the transmissions of data packets are disclosed. In another aspect of the invention, the selection of appropriate transmission rates to advertise by a common unit which provides wireless service to different types of wireless transmit receive units (WTRUs) is addressed.

摘要翻译： 本发明涉及被配置为增强无线网络中的通信容量的方法和无线通信设备。 在本发明的一个方面，公开了用于传输数据分组的各种调度过程和调度器。 在本发明的另一方面，寻址通过向不同类型的无线发射接收单元（WTRU）提供无线服务的公共单元进行通告的适当传输速率的选择。

公开(公告)号：US07239874B2

公开(公告)日：2007-07-03

申请号：US11366114

申请日：2006-03-02

申请人： Gautam G. Reddy ,  Prabhakar R. Chitrapu ,  Leonid Kazakevich ,  Teresa Joanne Hunkeler ,  Arty Chandra

发明人： Gautam G. Reddy ,  Prabhakar R. Chitrapu ,  Leonid Kazakevich ,  Teresa Joanne Hunkeler ,  Arty Chandra

IPC分类号： H04Q7/20

CPC分类号： H04W88/04 ,  G01S5/0027 ,  H04W4/02 ,  H04W64/00 ,  H04W84/00 ,  H04W88/06

摘要： A wireless network provides controlled wireless communications with multi-mode wireless WTRUs. The wireless network has at least one base station having a transceiver operating in an infrastructure communication mode with multi mode WTRUs and a controller that transmits control signals via infrastructure communications with a WTRU that control peer-to-peer mode communications of that WTRU with other WTRUs. A WTRU has transceiver components configured for selective operation in an infrastructure communication mode with a network base station and in a peer-to-peer communication mode with other WTRUs. The WTRU also has a transceiver controller configured to selectively control peer-to-peer mode communications with other WTRUs based on communication signals received in infrastructure communications with a network base station. Preferably, the transceiver controller is configured to control the transceiver components to switch between infrastructure communication mode and peer-to-peer communication mode based on Quality of Service criteria.

摘要翻译： 无线网络提供与多模式无线WTRU的受控无线通信。 无线网络具有至少一个基站，其具有在具有多模式WTRU的基础设施通信模式中工作的收发器，以及控制器，其经由与WTRU的基础设施通信来发送控制信号，该WTRU控制该WTRU与其他WTRU的对等模式通信 。 WTRU具有被配置为在与基站通信模式中的选择性操作并且与其他WTRU的对等通信模式中的选择性操作的收发器组件。 WTRU还具有收发器控制器，其被配置为基于在与基站通信的基础设施通信中接收的通信信号来选择性地控制与其他WTRU的对等模式通信。 优选地，收发器控制器被配置为基于服务质量标准来控制收发器组件在基础设施通信模式和对等通信模式之间切换。

公开(公告)号：US07206610B2

公开(公告)日：2007-04-17

申请号：US11023861

申请日：2004-12-28

申请人： Ana Lucia Iacono ,  Arty Chandra ,  Zheng Zhao

发明人： Ana Lucia Iacono ,  Arty Chandra ,  Zheng Zhao

IPC分类号： H04M1/00 ,  H04Q7/20 ,  H04Q7/00

CPC分类号： H04W16/28

摘要： Network Allocation Vector (NAV) and “beam access control” (BAC) techniques are provided to address data collision problems in WLANs wherein APs provide wireless network access in a service area defined by multiple sectors via use of a switchable antenna system or the like. Preferably, every time the AP visits a sector and before the AP moves on to the next sector, the AP can set the NAV equal to the time it will take until its next visit. Alternatively, or in addition, a BAC bit is transmitted by an AP to control access to the AP by WTRUs disposed in a service sector in which the BAC is transmitted.

公开(公告)号：US20060252443A1

公开(公告)日：2006-11-09

申请号：US11406877

申请日：2006-04-19

申请人： Mohammed Sammour ,  Sudheer Grandhi ,  Arty Chandra

发明人： Mohammed Sammour ,  Sudheer Grandhi ,  Arty Chandra

IPC分类号： H04B7/00 ,  H04Q7/20

CPC分类号： H04W52/0209 ,  H04W4/08 ,  H04W8/186 ,  H04W52/0216 ,  H04W52/0219 ,  H04W52/0229 ,  H04W84/12 ,  H04W88/08 ,  Y02D70/1242 ,  Y02D70/1244 ,  Y02D70/1246 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/22

摘要： A method for addressing groups of stations in a wireless communication system begins by assigning the stations in the system into a number of groups. A group identifier is signaled to each station and the group identifier is indicated in a frame for each group that has data in the frame. The addressing method can be applied to power savings for the station, wherein the station enters a power saving mode if the group identifier for the station is not present in the frame.

公开(公告)号：US20060251102A1

公开(公告)日：2006-11-09

申请号：US11209078

申请日：2005-08-22

申请人： Arty Chandra

发明人： Arty Chandra

IPC分类号： H04L12/413 ,  H04J3/02

CPC分类号： H04W52/245 ,  H04W24/00 ,  H04W52/223 ,  H04W74/08 ,  H04W92/10

摘要： The present invention is a method and apparatus for dynamically adjusting deferred transmission level in a wireless communication system implementing carrier sense multiple access/collision avoidance (CSMA/CA) mechanism. An access point (AP) and a station (STA) measure signal strength from an associated STA and AP and neighboring APs and adjust the deferred transmission level in accordance with the measurement results. If the energy level of the signals transmitted from the associated AP or STA is higher than energy level of signals transmitted from neighboring APs by a predetermined threshold, the AP and STA increase the deferred transmission level. Otherwise, the AP and STA may maintain the current deferred transmission level or decrease the deferred transmission level.

摘要翻译： 本发明是一种实现载波侦听多路访问/冲突避免（CSMA / CA）机制的无线通信系统中动态调整延迟传输级别的方法和装置。 接入点（AP）和站（STA）测量来自相关联的STA和AP和相邻AP的信号强度，并根据测量结果调整延迟的传输级别。 如果从相关联的AP或STA发送的信号的能级高于从相邻AP发送的信号的能级预定阈值，则AP和STA增加延迟的传输级别。 否则，AP和STA可以保持当前的延迟传输级别或减小延迟的传输级别。

公开(公告)号：US20060203789A1

公开(公告)日：2006-09-14

申请号：US11302299

申请日：2005-12-13

申请人： Ana Iacono ,  Arty Chandra ,  Inhyok Cha ,  John Chen ,  Yingxue Li ,  James Otto

发明人： Ana Iacono ,  Arty Chandra ,  Inhyok Cha ,  John Chen ,  Yingxue Li ,  James Otto

IPC分类号： H04Q7/24 ,  H04L12/66

CPC分类号： H04B7/0608 ,  H04W16/28 ,  H04W72/046

摘要： An apparatus and a method for improving packet transmission and reducing latency in VoIP over WLAN using switched beam antennas having multiple directional antenna beams are disclosed. In an access point having a switched beam antenna, or other smart antenna system, the present invention extends the coverage area of an access point for authentication and association of a new WTRU, extends the access points coverage area during in session transmissions with a WTRU, and adjusts data rates. The method also controls Contention Period (CP)/Contention Free Period (CFP) timing amongst beams emanating from an access point having a switched beam antenna, or other smart antenna system. Fast diversity switching, frame level switching, lowered data rates, and scanning multiple directional antenna beams for the optimum transmission beam are disclosed to improve beam selection and packet transmission.

摘要翻译： 公开了一种使用具有多个定向天线波束的切换波束天线来改善分组传输并减少VoIP中的VoIP延迟的装置和方法。 在具有切换波束天线或其它智能天线系统的接入点中，本发明扩展用于新WTRU的认证和关联的接入点的覆盖区域，在与WTRU的会话传输期间扩展接入点覆盖区域， 并调整数据速率。 该方法还控制从具有切换波束天线或其他智能天线系统的接入点发出的波束之间的竞争周期（CP）/无竞争周期（CFP）定时。 公开了快速分集切换，帧级切换，降低数据速率和扫描用于最佳传输波束的多方向天线波束，以改善波束选择和分组传输。

公开(公告)号：US20060183464A1

公开(公告)日：2006-08-17

申请号：US11405088

申请日：2006-04-17

申请人： Arty Chandra ,  Prabhakar Chitrapu ,  Narayan Menon

发明人： Arty Chandra ,  Prabhakar Chitrapu ,  Narayan Menon

IPC分类号： H04M1/66

CPC分类号： H04W8/18 ,  H04W40/246 ,  H04W40/248 ,  H04W48/08 ,  H04W84/12 ,  H04W84/18

摘要： A wireless communication system includes a base station that receives information regarding neighboring wireless systems and updates and stores this information for use in handover of user equipments (UEs).

摘要翻译： 无线通信系统包括接收关于相邻无线系统的信息的基站，并更新并存储用于用户设备（UE）的切换的该信息。

公开(公告)号：US20060165036A1

公开(公告)日：2006-07-27

申请号：US11236895

申请日：2005-09-28

申请人： Arty Chandra ,  Sudheer Grandhi ,  Eldad Zeira ,  Joseph Levy ,  Sintayehu Dehnie ,  Mohammed Sammour

发明人： Arty Chandra ,  Sudheer Grandhi ,  Eldad Zeira ,  Joseph Levy ,  Sintayehu Dehnie ,  Mohammed Sammour

IPC分类号： H04Q7/00 ,  H04L12/56

CPC分类号： H04W74/08 ,  H04L47/26 ,  H04L47/30 ,  H04W74/002 ,  Y02D70/142 ,  Y02D70/22

摘要： A method and system for eliminating interference caused by hidden nodes is disclosed. An initiator control message is defined for an initiator, (typically a wireless station (STA)), in order to begin an aggregate frame exchange with at least one responder. The initiator control message includes information on the queue sizes at the initiator. A responder, (typically an access point (AP)), sets up the required protection for the transmission of data by the initiator based on information on the queue sizes indicated in a field of the initiator control message using a responder control message. Other STAs that receive the responder control message set parameters for a wireless medium access accordingly. In another embodiment, multiple receiver aggregate multi-poll (MMP) and power save aggregation descriptor (PSAD) control frames are configured for transmission by a non-AP STA to provide enhanced scheduling and mitigate hidden node problems.

摘要翻译： 公开了一种消除隐藏节点干扰的方法和系统。 为启动器（通常为无线站（STA））定义发起者控制消息，以开始与至少一个响应者的聚合帧交换。 启动器控制消息包括关于发起者的队列大小的信息。 响应者（通常为接入点（AP）），基于使用响应者控制消息的发起者控制消息的字段中指示的队列大小的信息，建立由发起者传输数据所需的保护。 接收响应者控制消息的其他STA相应地为无线介质访问参数。 在另一个实施例中，多个接收机集合多轮询（MMP）和功率节省聚合描述符（PSAD）控制帧被配置为由非AP STA传输，以提供增强的调度并减轻隐藏的节点问题。