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    Two-terminal multi-color photodetectors and focal plane arrays
    42.
    发明授权
    Two-terminal multi-color photodetectors and focal plane arrays 有权
    双端多色光电探测器和焦平面阵列

    公开(公告)号：US08350208B1

    公开(公告)日：2013-01-08

    申请号：US13011475

    申请日：2011-01-21

    申请人： Yong-Hang Zhang ,  Ding Ding ,  Elizabeth Steenbergen

    发明人： Yong-Hang Zhang ,  Ding Ding ,  Elizabeth Steenbergen

    IPC分类号： H01J31/00 ,  H01J40/14

    CPC分类号： H01L27/14647 ,  H01L27/14636 ,  H01L31/0687 ,  H01L31/0725

    摘要： Two-terminal multi junction photodetectors and focal plane arrays for multi-color detection or imaging acquisition can be formed by connecting photodiodes with different bandgaps or wavelengths, through tunnel diodes, in series with the same polarization. Under reverse bias in the dark, the total current going through such multi junction photodetectors is dictated by the smallest reverse saturation current of the photodiodes. When in operating mode, a set of light sources with different wavelengths corresponding to each individual photodiode can be used to optically bias all the photodiodes except the detecting photodiode Under illumination, all other photodiodes work in the photovoltaic mode and have much higher maximum possible reverse currents than the detecting photodiode. As a result, the total current of the multi junction photodetector is dictated by the detecting photodiode. Therefore, a total current can be read by, for example, read-out circuits to give the optical signal strength at that specific wavelength of the detecting photodiode. By using an algorithm one can use such multi junction photodetectors to detect different wavelengths and to take multicolor images.

    摘要翻译： 可以通过连接具有不同带隙或波长的光电二极管，通过隧道二极管与相同的极化串联，形成用于多色检测或成像采集的两端多结光电探测器和焦平面阵列。 在黑暗中的反向偏置下，通过这种多结光电探测器的总电流由光电二极管的最小反向饱和电流决定。 当处于工作模式时，可以使用一组与各个光电二极管相对应的具有不同波长的光源来光学偏置检测光电二极管外的所有光电二极管。在照明下，所有其他光电二极管工作在光伏模式，并具有高得多的最大可能反向电流 比检测光电二极管。 结果，多结光电检测器的总电流由检测光电二极管决定。 因此，可以通过例如读出电路来读取总电流，以在检测光电二极管的特定波长处给出光信号强度。 通过使用算法，可以使用这种多结光电探测器来检测不同波长并采取多色图像。

    Preambles in OFDMA system
    43.
    发明授权
    Preambles in OFDMA system 有权
    OFDMA系统中的前缀

    公开(公告)号：US08340072B2

    公开(公告)日：2012-12-25

    申请号：US13114579

    申请日：2011-05-24

    申请人： Jianglei Ma ,  Hang Zhang ,  Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Mo-Han Fong

    发明人： Jianglei Ma ,  Hang Zhang ,  Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Mo-Han Fong

    IPC分类号： H04W72/04

    CPC分类号： H04L27/2692 ,  H04B7/02 ,  H04B7/0452 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0048 ,  H04L7/043 ,  H04L27/2613 ,  H04L27/265 ,  H04L27/2655 ,  H04L27/2686 ,  H04W24/02

    摘要： The present invention provides a preamble that is inserted into an OFDMA frame and has a common sequence for all the base stations participating in a transmission. The subscriber station performs fine synchronization using the common sequence on the common preamble, and the resulting peaks will provide the locations of candidate base stations. The base station specific search is then performed in the vicinities of those peaks by using base station specific pseudo-noise sequences. With this two stage cell search, the searching window is drastically reduced. The preamble is matched to known values by a respective receiver to decode the signals and permit multiple signals to be transferred from the transmitter to the receiver. The preamble may comprise two parts, Preamble-I and Preamble-2, which may be used in different systems, including multioutput, multi-input (MIMO) systems.

    摘要翻译： 本发明提供插入到OFDMA帧中并具有参与传输的所有基站的公共序列的前同步码。 用户站使用公共前导码上的公共序列执行精细同步，并且所得到的峰值将提供候选基站的位置。 然后通过使用基站专用伪噪声序列，在那些峰附近执行基站专用搜索。 通过这两个阶段的单元格搜索，搜索窗口大大减少。 前导码由相应的接收机与已知值匹配以对信号进行解码，并允许多个信号从发射机传送到接收机。 前导码可以包括两个部分，即前导码1和前导码2，其可以在不同的系统中使用，包括多输入多输入（MIMO）系统。

    Quality of service control in multiple hop wireless communication environments
    46.
    发明授权
    Quality of service control in multiple hop wireless communication environments 有权
    多跳无线通信环境中的服务质量控制

    公开(公告)号：US08305897B2

    公开(公告)日：2012-11-06

    申请号：US12172899

    申请日：2008-07-14

    申请人： Hang Zhang ,  Peiying Zhu ,  Wen Tong ,  Gamini Senarath ,  Derek Yu ,  David G. Steer

    发明人： Hang Zhang ,  Peiying Zhu ,  Wen Tong ,  Gamini Senarath ,  Derek Yu ,  David G. Steer

    IPC分类号： G01R31/08 ,  H04W4/00 ,  H04L12/28

    CPC分类号： H04W40/12 ,  H04B7/2606 ,  H04L12/4633 ,  H04L47/24 ,  H04L47/28 ,  H04L69/22 ,  H04W16/26 ,  H04W28/18 ,  H04W28/24 ,  H04W40/22 ,  H04W72/0413 ,  H04W72/042 ,  H04W76/12 ,  H04W84/047 ,  H04W84/12

    摘要： One or more relay stations may be employed along a wireless communication access path between an ingress station and an egress station. A logical communication tunnel is established between the ingress and egress stations through any number of intermediate relay stations to handle session flows of PDUs. As PDUs arrive, the ingress station may determine and add scheduling information to the PDUs before they are delivered to the downstream intermediate relay stations or egress stations. The scheduling information is used by the downstream stations to schedule the PDUs for further delivery. The scheduling information may also be used by the egress station to schedule the PDUs for delivery. The scheduling information added to the PDU by the ingress station bears on a QoS class associated with the PDU, a deadline for the egress station to deliver the PDU, or a combination thereof.

    摘要翻译： 可以沿入站和出站之间的无线通信接入路径采用一个或多个中继站。 通过任意数量的中间中继站在进入和出站之间建立逻辑通信隧道，以处理PDU的会话流。 当PDU到达时，进入站可以在PDU递送到下游中间中继站或出站之前确定并将调度信息添加到PDU。 下游站使用调度信息来调度PDU以进一步传送。 调度信息也可以由出站使用，以调度用于传送的PDU。 由入站站添加到PDU的调度信息承载在与PDU相关联的QoS类别，出站台递送PDU的最后期限或其组合。

    Relay Techniques Suitable for User Equipment in Downlink
    48.
    发明申请
    Relay Techniques Suitable for User Equipment in Downlink 有权
    中继技术适用于下行用户设备

    公开(公告)号：US20120163282A1

    公开(公告)日：2012-06-28

    申请号：US13126226

    申请日：2009-10-30

    申请人： Hua Xu ,  Jianglei Ma ,  Hang Zhang ,  Ming Jia ,  Peiying Zhu ,  Lai King Tee ,  Jun Li

    发明人： Hua Xu ,  Jianglei Ma ,  Hang Zhang ,  Ming Jia ,  Peiying Zhu ,  Lai King Tee ,  Jun Li

    IPC分类号： H04B7/14 ,  H04W4/00

    CPC分类号： H04W4/06 ,  H04B7/2606 ,  H04L25/023 ,  H04L27/2647 ,  H04W84/047 ,  H04W92/045

    摘要： The present invention provides a solution to improve coverage and cell edge performance in a mobile user communication system is the use of fixed relays, which are pieces of infrastructure without a wired backhaul connection. The relays transmit or “relay” downlink messages between the base station (BS) and mobile stations (MSs) through a multi-hop communication. The present invention is a method and system for supporting a multiple user mobile broadband communication network that includes relay techniques suitable for user equipment in the downlink communication to the user equipment.

    摘要翻译： 本发明提供了一种在移动用户通信系统中提高覆盖和小区边缘性能的解决方案，即使用固定继电器，固定继电器是没有有线回程连接的基础设施。 中继站通过多跳通信在基站（BS）和移动站（MS）之间发送或“中继”下行链路消息。 本发明是一种用于支持多用户移动宽带通信网络的方法和系统，该多用户移动宽带通信网络包括适用于向用户设备的下行链路通信中的用户设备的中继技术。

    System and method for uplink inter cell interference coordination in a wireless access system
    49.
    发明授权
    System and method for uplink inter cell interference coordination in a wireless access system 有权
    无线接入系统中上行链路小区间干扰协调的系统和方法

    公开(公告)号：US08208937B2

    公开(公告)日：2012-06-26

    申请号：US12814077

    申请日：2010-06-11

    申请人： Hang Zhang ,  Jia Ming ,  Israfil Bahceci

    发明人： Hang Zhang ,  Jia Ming ,  Israfil Bahceci

    IPC分类号： H04W88/02

    CPC分类号： H04W16/04 ,  H04W16/10 ,  H04W72/08

    摘要： A system and method for uplink inter cell interference coordination and multi-user multiple input, multiple output in a wireless access system are provided. A method for providing uplink inter cell interference coordination in a wireless access system includes categorizing users the wireless access system, selecting a resource allocation plan based on the categorized users, allocating resources to the users in the wireless access system based on the selected resource allocation plan, and receiving transmissions from the users.

    摘要翻译： 提供了一种用于上行链路小区间干扰协调和多用户多输入，无线接入系统中的多输出的系统和方法。 一种用于在无线接入系统中提供上行链路小区间干扰协调的方法，包括：对用户对无线接入系统进行分类，基于分类用户选择资源分配方案，基于所选择的资源分配方案向无线接入系统中的用户分配资源 并且从用户接收传输。

    Efficient location updates, paging and short bursts
    50.
    发明授权
    Efficient location updates, paging and short bursts 有权
    高效的位置更新，寻呼和短脉冲串

    公开(公告)号：US08014377B2

    公开(公告)日：2011-09-06

    申请号：US11571094

    申请日：2005-06-27

    申请人： Hang Zhang ,  Mo-Han Fong ,  Peiying Zhu ,  Wen Tong

    发明人： Hang Zhang ,  Mo-Han Fong ,  Peiying Zhu ,  Wen Tong

    IPC分类号： H04J3/24

    CPC分类号： H04W72/0413 ,  H04W68/00 ,  H04W74/0866

    摘要： A mobile terminal in a wireless communication network may be one of several modes of operation. When in an idle mode, the mobile terminal may avoid a lengthy random access procedure normally associated with responding to a page from a base station, if the base station includes in the page an indication of a resource that the mobile terminal may utilize when responding to the page. Additionally, the mobile terminal may transmit an efficient location update MAC header to a base station, whether prompted to by a page from the base station or not. Furthermore, without leaving the idle mode or a sleep mode, the mobile terminal may exchange short data burst messages with a base station.

    摘要翻译： 无线通信网络中的移动终端可以是若干操作模式之一。 当处于空闲模式时，如果基站在页面中包括移动终端在响应时可以利用的资源的指示，则移动终端可以避免通常与响应于来自基站的页面相关联的冗长的随机接入过程 这一页。 另外，移动终端可以向基站发送有效的位置更新MAC报头，无论是否由来自基站的页面提示。 此外，在不离开空闲模式或睡眠模式的情况下，移动终端可以与基站交换短数据突发消息。