知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

106 records (took 0.024 seconds)

    Independent mode selection for forward and reverse links
    91.
    发明授权
    Independent mode selection for forward and reverse links 失效
    前向和反向链路的独立模式选择

    公开(公告)号：US07369573B2

    公开(公告)日：2008-05-06

    申请号：US11000286

    申请日：2004-11-30

    Applicant: Fatih Ozluturk

    Inventor： Fatih Ozluturk

    IPC: H04J3/16 ,  H04J3/22 ,  H04Q7/20

    CPC classification number: H04W88/06 ,  H04W76/10

    Abstract: Implementation of communication in a multi-protocol wireless network communication network is performed according to protocols independently selected for forward and reverse communication links. A communication request is made according to predetermined criteria, and a communication link is established responsive to the request. A determination is made of a preferred communication protocol in at least one direction (forward or reverse link). The communication link is established for that direction in accordance with the preferred communication protocol while controlling communication in the other direction independently.

    Abstract translation: 根据为前向和反向通信链路独立选择的协议，执行多协议无线网络通信网络中的通信的实现。 根据预定标准进行通信请求，响应于该请求建立通信链路。 在至少一个方向（正向或反向链路）上确定优选的通信协议。 根据优选的通信协议为该方向建立通信链路，同时独立地控制另一方向上的通信。

    SEAMLESS HANDOFF SYSTEM AND METHOD
    92.
    发明申请
    SEAMLESS HANDOFF SYSTEM AND METHOD 审中-公开
    无缝手柄系统和方法

    公开(公告)号：US20080032693A1

    公开(公告)日：2008-02-07

    申请号：US11767767

    申请日：2007-06-25

    Applicant: Fatih Ozluturk

    Inventor： Fatih Ozluturk

    IPC: H04Q7/20

    CPC classification number: H04W36/18 ,  H04L5/005 ,  H04W36/08 ,  H04W36/30 ,  H04W52/0261 ,  H04W52/228 ,  H04W52/362 ,  H04W52/40 ,  H04W56/0015 ,  H04W88/02 ,  H04W88/08

    Abstract: A multicellular communications system where transmission between a roving subscriber and multiple base station transceivers is maintained throughout the territory. Each mobile subscriber unit has global code seeds for the entire communications system or an updated neighbor list and continuously searches to access available cell base stations while maintaining a communication link with one base station. Candidate cell base stations are interrogated and communicated with. The candidate base station that requires less transmitting energy from the mobile subscriber unit is closely monitored. When the mobile subscriber unit can successfully communicate with less transmit power than currently required by the present base station, the mobile subscriber unit is handed off to the candidate base station transceiver.

    Abstract translation: 一个多细胞通信系统，其中在整个领土内保持了流动用户和多个基站收发器之间的传输。 每个移动用户单元具有用于整个通信系统或更新的邻居列表的全球代码种子，并且在维护与一个基站的通信链路的同时不断搜索访问可用的小区基站。 候选单元基站被询问并通信。 密切监视从移动用户单元需要更少发射能量的候选基站。 当移动用户单元能够以比当前基站所要求的更少的发送功率成功地进行通信时，移动用户单元被切换到候选基站收发信机。

    Carrier offset estimator
    93.
    发明申请
    Carrier offset estimator 审中-公开
    载波偏移估计器

    公开(公告)号：US20070268978A1

    公开(公告)日：2007-11-22

    申请号：US11888168

    申请日：2007-07-31

    Applicant: Leonid Kazakevich ,  Fatih Ozluturk ,  Alexander Reznik

    Inventor： Leonid Kazakevich ,  Fatih Ozluturk ,  Alexander Reznik

    IPC: H04L5/12

    CPC classification number: H04L27/3836 ,  H04L27/2332 ,  H04L27/3854 ,  H04L2027/0065 ,  H04L2027/0085

    Abstract: A system for estimating carrier offset includes includes a transmitter configured to transmit a quadrature modulated signal, and a receiver. The receiver includes an input configured to receive the quadrature modulated signal, a local oscillator configured to generate cosine and sine waves at a carrier frequency of the quadrature modulated signal, at least one cosine mixer configured to generate a carrier frequency demodulated output, at least one sine mixer configured to generate a carrier frequency demodulated output, a plurality of lowpass filters configured to filter the demodulated output of the cosine and sine mixers to produce filtered cosine and sine signal components, and a carrier offset detection processor to estimate a carrier offset between the carrier frequency and a local oscillator frequency based on the filtered output of the lowpass filters.

    Abstract translation: 用于估计载波偏移的系统包括：发射机，被配置为发送正交调制信号;以及接收机。 所述接收机包括被配置为接收所述正交调制信号的输入端，被配置为在所述正交调制信号的载波频率上产生余弦和正弦波的本地振荡器，配置成产生载波频率解调输出的至少一个余弦混频器，至少一个 配置为产生载波频率解调输出的多个低通滤波器，多个低通滤波器，被配置为对余弦和正弦混频器的解调输出进行滤波，以产生滤波余弦和正弦信号分量;以及载波偏移检测处理器，用于估计载波偏移 基于低通滤波器的滤波输出的载波频率和本地振荡器频率。

    RANDOM ACCESS CHANNEL FOR OFDM-MIMO SYSTEM
    94.
    发明申请
    RANDOM ACCESS CHANNEL FOR OFDM-MIMO SYSTEM 有权
    OFDM-MIMO系统的随机接入信道

    公开(公告)号：US20070263579A1

    公开(公告)日：2007-11-15

    申请号：US11746363

    申请日：2007-05-09

    Applicant: Fatih Ozluturk

    Inventor： Fatih Ozluturk

    IPC: H04Q7/24

    CPC classification number: H04W74/0833 ,  H04B7/0413 ,  H04J13/0059 ,  H04L27/2608 ,  H04L27/2637 ,  H04W74/004 ,  H04W74/0866

    Abstract: In orthogonal frequency division multiplexing (OFDM) multiple-input multiple-output (MIMO) systems, a wireless transmit/receive unit (WTRU) selects a random access channel (RACH) and a phase for a constant amplitude zero auto correlation (CAZAC) sequence for RACH transmission. The WTRU then transmits a RACH transmission to a Node B via the selected RACH. Once the RACH transmission is detected, the Node B sends an acknowledgement (ACK) to the WTRU over an ACK channel. The Node B may transmit the ACK on a shared channel. The WTRU may ramp up transmit power while the RACH transmission is transmitted, or steps up transmit power of a subsequent RACH transmission. The RACH transmission and data transmission may be either time multiplexed or frequency multiplexed. A plurality of RACHs may be defined and one of the defined RACHs may be selected randomly or based on predetermined criteria.

    Abstract translation: 在正交频分复用（OFDM）多输入多输出（MIMO）系统中，无线发射/接收单元（WTRU）选择随机接入信道（RACH）和恒定幅度零自相关（CAZAC）序列的相位 用于RACH传输。 然后，WTRU经由所选择的RACH向节点B发送RACH传输。 一旦检测到RACH传输，节点B通过ACK信道向WTRU发送确认（ACK）。 节点B可以在共享信道上发送ACK。 WTRU可以在发送RACH传输时提高发射功率，或者增加随后的RACH传输的发射功率。 RACH传输和数据传输可以是时分复用的或频率复用的。 可以定义多个RACH，并且可以随机地或基于预定标准来选择所定义的RACH中的一个。

    User equipment for synchronizing to a TDD base station
    96.
    发明申请
    User equipment for synchronizing to a TDD base station 有权
    用于与TDD基站同步的用户设备

    公开(公告)号：US20060280136A1

    公开(公告)日：2006-12-14

    申请号：US11505575

    申请日：2006-08-17

    Applicant: Nadir Sezgin ,  Fatih Ozluturk

    Inventor： Nadir Sezgin ,  Fatih Ozluturk

    IPC: H04L5/14 ,  H04B7/216

    CPC classification number: H04B1/7083 ,  H04B1/70735 ,  H04B1/70752 ,  H04B1/7093 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04L27/2053 ,  H04W56/00 ,  H04W74/04 ,  H04W88/08

    Abstract: A time division duplex (TDD) user equipment (UE) is configured to synchronize to a TDD base station. The UE includes a receiver configured to receive a primary synchronization code along with a plurality of secondary synchronization codes from a TDD base station. The TDD base station is associated with having a code group out of N code groups. The plurality of secondary synchronization codes number less than (log2N)+1 and are quadrature phase shift keying modulated. The UE also includes a corresponding matched filter to each of the received secondary synchronization codes. The UE is configured to identify the code group of the TDD base station by the received plurality of secondary synchronization.

    Abstract translation: 时分双工（TDD）用户设备（UE）被配置为与TDD基站同步。 UE包括被配置为从TDD基站接收主同步码以及多个次同步码的接收机。 TDD基站与N个码组中的代码组相关联。 多个次同步码小于（log 2 N）+1，并且是正交相移键控调制。 UE还包括对每个接收到的辅同步码的相应的匹配滤波器。 UE被配置为通过所接收的多个次同步来识别TDD基站的码组。

    Method and apparatus for subcarrier and antenna selection in MIMO-OFDM system
    99.
    发明申请
    Method and apparatus for subcarrier and antenna selection in MIMO-OFDM system 有权
    MIMO-OFDM系统中子载波和天线选择的方法和装置

    公开(公告)号：US20060034382A1

    公开(公告)日：2006-02-16

    申请号：US11082286

    申请日：2005-03-17

    Applicant: Fatih Ozluturk ,  Philip Pietraski ,  Aykut Bultan

    Inventor： Fatih Ozluturk ,  Philip Pietraski ,  Aykut Bultan

    IPC: H04L1/02

    CPC classification number: H04W52/262 ,  H04B7/046 ,  H04L1/0003 ,  H04L1/0009 ,  H04L5/0023 ,  H04L5/0025 ,  H04L5/0046 ,  H04L5/006 ,  H04L25/0206 ,  H04W52/42

    Abstract: A method and apparatus for radio resources control in a multiple input multiple output (MIMO) orthogonal frequency division multiplexing (OFDM) communication system are disclosed. Channel metric is calculated for each of a plurality of transmit antennas. Sub-carriers are allocated to each transmit antenna in accordance with the channel metric of each transmit antenna. Signals are transmitted using the allocated sub-carriers at each antenna. Adaptive modulation and coding and transmit power control of each sub-carrier may be further implemented in accordance with the channel metric. Power control may be implemented per antenna basis or per sub-carrier basis. In performing power control, a subset of transmit antennas may be selected and waterpouring may be applied only to the selected antennas. Waterpouring may be based on SNR instead of channel response.

    Abstract translation: 公开了一种用于多输入多输出（MIMO）正交频分复用（OFDM）通信系统中的无线资源控制的方法和装置。 为多个发射天线中的每一个计算信道度量。 根据每个发射天线的信道度量，将子载波分配给每个发射天线。 在每个天线处使用分配的子载波来发送信号。 可以根据信道度量进一步实现每个子载波的自适应调制和编码和发射功率控制。 功率控制可以基于每个天线或每个子载波来实现。 在执行功率控制时，可以选择发射天线的子集，并且可以仅对所选择的天线进行浇水。 灌水可以基于SNR而不是通道响应。

Patent Agency Ranking