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    • 51. 发明授权
    • User equipment with multiuser detection
    • 用户设备具有多用户检测功能
    • US06795417B2
    • 2004-09-21
    • US10090372
    • 2002-03-04
    • Ariela ZeiraEldad ZeiraAlexander ReznikStephen E. Terry
    • Ariela ZeiraEldad ZeiraAlexander ReznikStephen E. Terry
    • H04B7216
    • H04B1/7103H04B1/707H04B1/70735H04B1/7105H04B2001/70935H04B2201/70701H04B2201/70709H04J13/00H04J13/16
    • A user equipment (UE) for a wireless time division duplex communication system which uses code division multiple access. The system communicates using communication bunts that have unique channelization codes and corresponding midamble codes where each midamble code is uniquely related to one or more channelization codes. The UE has a midamble detector which detects each midamble code in a received communication burst. A logic block determines the channelization codes related to each detected midamble and a channelization code detector detects channelization codes from among channelization codes determined by the logic block. A multiuser detection device recovers data from the received communication burst based on the detected channelization codes. Where all midamble codes are uniquely related to one channelization code, the channelization code detector is not needed.
    • 一种用于无线时分双工通信系统的用户设备(UE),其使用码分多址。 该系统使用具有唯一的信道化码和相应的中间码的通信脉冲串,其中每个中间码与唯一的一个或多个信道化码有关。 UE具有在接收到的通信突发中检测每个中间码的中置码检测器。 逻辑块确定与每个检测到的中间码相关的信道化码,并且信道化码检测器从由逻辑块确定的信道化码中检测信道化码。 多用户检测装置基于检测到的信道化码从接收到的通信突发中恢复数据。 在所有midamble码与一个信道化码唯一相关的情况下,不需要信道化码检测器。
    • 52. 发明授权
    • Random access channel access and backoff mechanism
    • 随机接入信道接入和退避机制
    • US06721281B1
    • 2004-04-13
    • US09593879
    • 2000-06-14
    • Stephen G. DickEldad Zeira
    • Stephen G. DickEldad Zeira
    • G01R3108
    • H04W74/006H04W48/12H04W74/0833
    • A base station transmits access control signals on a periodic basis having a first transmission rate. The base station transmits access control modification signals at a second transmission rate higher than the first transmission rate. The user equipment transmits an access attempt signal. The access attempt signal requests the base station to permit the user equipment access to the random access channel. The user equipment receives the transmitted access control signals and access modification signals. A wait period is determined based on in part the received access control signals and access control modification signals. In response to an unsuccessful access attempt, the user equipment delays transmitting a subsequent access attempt signal for the wait period.
    • 基站发送具有第一传输速率的周期性的接入控制信号。 基站以比第一传输速率高的第二传输速率发送接入控制修改信号。 用户设备发送接入尝试信号。 访问尝试信号请求基站允许用户设备访问随机接入信道。 用户设备接收发送的接入控制信号和接入修改信号。 部分地基于所接收的访问控制信号和访问控制修改信号来确定等待时间。 响应于不成功的访问尝试,用户设备延迟发送等待时间段的后续访问尝试信号。
    • 55. 发明申请
    • RESOURCE ALLOCATION TO USERS IN SLOTTED CODE DIVISION MULTIPLE ACCESS SYSTEMS USING BEAMS
    • 资源分配使用代码段使用多个使用系统的多个访问系统
    • US20120076031A1
    • 2012-03-29
    • US13308970
    • 2011-12-01
    • Eldad Zeira
    • Eldad Zeira
    • H04W24/00H04J3/00H04L12/26
    • H04W72/082H04B7/0408H04B7/0617H04B7/086H04W16/28H04W24/10H04W52/42H04W72/02H04W72/0446
    • The invention includes several embodiments for slot assignment in code division multiple access communication systems. One embodiment for fixed beams assigns slots by first detecting a beam having the best received quality and selected the best slot from that beam. Another fixed beam embodiment determines the best slot or slots in a number of beams and determines the overall best beam/slot combination. Another fixed beam embodiment uses a modified interference factor. One embodiment for the uplink using adaptive arrays using a spatial analysis stage followed by a transmission power level estimation stage. An overall interference level associated with each slot is determined and a slot having the best overall quality is determined. Another embodiment for the downlink uses the spatial analysis and slot assignment of the uplink for the downlink. Another embodiment for the downlink uses a spatial and transmission power level estimation stages.
    • 本发明包括用于码分多址通信系统中的时隙分配的几个实施例。 固定波束的一个实施例通过首先检测具有最佳接收质量的波束并从该波束中选择最佳时隙来分配时隙。 另一个固定波束实施例确定多个波束中的最佳时隙或时隙,并确定整体最佳波束/时隙组合。 另一固定波束实施例使用修改的干扰因子。 使用自适应阵列的上行链路的一个实施例使用空间分析阶段,接着是传输功率电平估计级。 确定与每个时隙相关联的整体干扰电平,并且确定具有最佳整体质量的时隙。 下行链路的另一实施例使用用于下行链路的上行链路的空间分析和时隙分配。 下行链路的另一实施例使用空间和发射功率电平估计级。
    • 58. 发明授权
    • Mitigation of wireless transmit/receive unit (WTRU) to WTRU interference using multiple antennas or beams
    • 使用多个天线或波束将无线发射/接收单元(WTRU)减轻到WTRU干扰
    • US07630688B2
    • 2009-12-08
    • US11025252
    • 2004-12-29
    • Eldad Zeira
    • Eldad Zeira
    • H04B1/00
    • H04B7/0617H04B7/0408H04B7/0695H04B7/088Y02D70/444
    • Multiple antenna elements of a WTRU are used to form an adaptive antenna beam pattern for receiving signals in the downlink direction. The WTRU utilizes the formed antenna beam to form a transmission antenna beam for transmitting signals in the uplink direction. In an alternate embodiment, the multiple antenna elements are used to form a plurality of fixed, predetermined antenna beams. The WTRU then selects and switches to the one of the predetermined beams that yields the best downlink reception signals. The WTRU utilizes the selected beam pattern to transmit signals in the uplink direction. In an alternate embodiment, the WTRU receives spectral arrangement information and utilizing this information to avoid transmitting in the direction of spectrally adjacent WTRUs.
    • WTRU的多个天线元件用于形成用于在下行链路方向上接收信号的自适应天线波束模式。 WTRU利用形成的天线波束形成用于在上行链路方向上传输信号的发射天线波束。 在替代实施例中,多个天线元件用于形成多个固定的预定天线波束。 然后,WTRU选择并切换到产生最佳下行链路接收信号的预定波束中的一个。 WTRU利用所选择的波束模式在上行链路方向上发送信号。 在替代实施例中,WTRU接收频谱排列信息并利用该信息来避免沿频谱相邻的WTRU的方向发射。