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    • 2. 发明申请
    • TIMING ERROR ESTIMATION IN A WIMAX RECEIVER
    • WIMAX接收机的时序误差估计
    • WO2010135060A1
    • 2010-11-25
    • PCT/US2010/032503
    • 2010-04-27
    • MOTOROLA, INC.YU, XiaoyongROTTINGHAUS, Alan, P.WILSON, Timothy, J.
    • YU, XiaoyongROTTINGHAUS, Alan, P.WILSON, Timothy, J.
    • H04L27/26H04B7/04H04L25/02H04L5/00
    • H04L27/2662H04L5/0051H04L25/0224H04L27/2675
    • A method, a system (100) and a receiver device (107) provide timing and frequency correction in a spatial division multiple access (SDMA) system. A timing and frequency correction (TFC) logic/utility (110) obtains a timing error estimate by using pilot symbols on a slot of six tiles. The TFC logic estimates (412, 418) the timing error based on pilot phase differences between unique pairs of tiles when the frequency separation of the tiles is less than a threshold value. When none of the unique pairs of tiles satisfies the threshold value, the TFC logic estimates (412, 414) timing error based on an exhaustive search for each candidate phase error value. The TFC logic performs (426) timing error correction via a timing error estimate based on pilots from the symbols received on each antenna. The TFC logic performs (428) inexplicit frequency error correction according to phase differences based on relative symbol indices.
    • 方法,系统(100)和接收机设备(107)在空分多址(SDMA)系统中提供定时和频率校正。 定时和频率校正(TFC)逻辑/效用(110)通过使用六个瓦片的时隙上的导频符号来获得定时误差估计。 当块的频率间隔小于阈值时,TFC逻辑基于独特的瓦片对之间的导频相位差来估计(412,418)定时误差。 当没有唯一的瓦片对满足阈值时,TFC逻辑基于对每个候选相位误差值的详尽搜索来估计(412,414)定时误差。 TFC逻辑通过基于在每个天线上接收到的符号的导频的定时误差估计来执行(426)定时纠错。 TFC逻辑根据相对符号索引的相位差执行(428)非均匀频率误差校正。
    • 5. 发明申请
    • OPTIMIZING RADIO COMMUNICATION EFFICIENCY AND METHODS THEREOF
    • 优化无线电通信效率及其方法
    • WO2006055300A2
    • 2006-05-26
    • PCT/US2005/040203
    • 2005-11-07
    • MOTOROLA, INC.FLONDRO, Dan, S.WILSON, Timothy, J.
    • FLONDRO, Dan, S.WILSON, Timothy, J.
    • H04Q7/00
    • H04W36/30
    • A selective call radio (106) operating in a communication system (100) including a plurality of radio base stations (104) operating in a corresponding plurality of communication zones (102), wherein the selective call radio is programmed to measure (206) a temperature of the selective call radio receiving radiated signals from a first one of the plurality of communication zones, measure (204) in the selective call radio an in-service signal power based on the radiated signals, determine (208) a modified signal power and an in-service signal power correction factor corresponding to the temperature, and perform a handover (212) from the first communication zone to a second one of the plurality of communication zones if the modified signal power and a handover threshold satisfy a predetermined condition.
    • (102)中操作的包括多个无线电基站(104)的通信系统(100)中操作的选择性呼叫无线电装置(106),其中所述选择性呼叫无线电装置 被编程以测量(206)来自多个通信区中的第一个的选择呼叫无线电接收辐射信号的温度,基于辐射信号在选择性呼叫无线电中测量(204)服务中信号功率,确定 (208)修改的信号功率以及与所述温度相对应的服务中信号功率修正因子,并且如果所述修改的信号功率和所述修改的信号功率相同,则执行从所述第一通信区到所述多个通信区中的第二通信区的切换(212) 切换阈值满足预定条件。
    • 10. 发明申请
    • METHOD AND APPARATUS TO FACILITATE SCANNING IN A WIRELESS LOCAL AREA NETWORK
    • 在无线局域网中促进扫描的方法和设备
    • WO2007018713A3
    • 2007-05-03
    • PCT/US2006021943
    • 2006-06-06
    • MOTOROLA INCWILSON TIMOTHY JSMITH BRIAN K
    • WILSON TIMOTHY JSMITH BRIAN K
    • H04B7/185H04W36/00H04W52/02
    • H04W36/0088H04W52/0216H04W52/0219Y02D70/00Y02D70/142Y02D70/23
    • A wireless two-way communications apparatus (700) having a radio resource manager (706) is configured and arranged to effect one or more modes of operation (203, 204, 206, and 207) as a function, at least in part, of whether the apparatus is presently operating in a power saving mode of operation (201) and/or is presently supporting an active plesiochronous communication session (202 and 205). Pursuant to one approach, when the apparatus is operating in a power saving mode of operation and presently supports such a communication session and when the apparatus further determines (301) that a wireless access point beacon or supplemental beacon is at least largely coincident with a scheduled active window of that communication session, the apparatus can determine (302) whether to facilitate rescheduling a next monitoring of the beacon or supplemental beacon and/or altering the scheduled active window itself to thereby render the beacon or supplemental beacon monitorable by the apparatus.
    • 具有无线电资源管理器(706)的无线双向通信装置(700)被配置和布置成至少部分地作为一个或多个操作模式(203,204,206和207)的功能 该装置目前是否在省电操作模式(201)中操作和/或目前是否支持活动准同步通信会话(202和205)。 根据一种方法,当设备在省电操作模式下操作并且当前支持这样的通信会话并且当设备进一步确定(301)无线接入点信标或补充信标至少与预定的时间大致一致时 该装置可以确定(302)是否有助于重新调度信标或补充信标的下一个监视和/或改变调度的活动窗口本身,从而使得装置可监视信标或补充信标。