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    • 2. 发明申请
    • METHOD AND APPARATUS FOR INCREASING SERVICE EFFICACY IN AN AD-HOC MESH NETWORK
    • 用于提高AD-HOC网状网络中的服务效率的方法和设备
    • WO2003050989A2
    • 2003-06-19
    • PCT/US2002/037834
    • 2002-11-25
    • MOTOROLA, INC.
    • REED, John, DouglasSMITH, Jack, Anthony
    • H04L
    • H04W88/02H04W4/00H04W84/18
    • A method of and wireless communications unit (WCU) for providing service in a mesh network includes a receiver for receiving a first signal from a first WCU in the mesh network; a directional antenna system for coupling the signal to the receiver, the signal arriving from a first selected one of a first plurality of directions; a controller to control the directional antenna system such that the signal is coupled to the receiver according to a local predetermined pattern of the first plurality of directions; and a transmitter to send a second signal in a second selected one of the first plurality of directions, where the controller interrupts the local predetermined pattern and selects the second direction.
    • 一种用于在网状网络中提供服务的无线通信单元(WCU)的方法,包括:接收器,用于接收来自所述网状网络中的第一WCU的第一信号; 定向天线系统,用于将信号耦合到接收器,信号从第一多个方向中的第一选定方向到达; 控制器,用于控制所述定向天线系统,使得所述信号根据所述第一多个方向中的局部预定模式耦合到所述接收器; 以及发射器,用于以第一多个方向中的第二选定方向发送第二信号,其中控制器中断局部预定模式并选择第二方向。
    • 4. 发明申请
    • METHOD FOR WIRELESS COMMUNICATION SYSTEM PLANNING
    • 无线通信系统规划方法
    • WO1996031099A1
    • 1996-10-03
    • PCT/US1996000964
    • 1996-01-29
    • MOTOROLA INC.
    • MOTOROLA INC.TANG, YuqiangREED, John, Douglas
    • H05G01/26
    • H04W16/18G01S3/00G01S5/00H01Q1/246
    • A method for wireless communication system planning includes, in a first embodiment, determining an image tree (500), based on a transmitter location (401) and the reflective (415) and diffractive (425) surfaces within a coverage region, and limiting the image tree to exclude branching for higher order images requiring more than a predetermined number of reflections and/or diffractions, or potential child images corresponding to surfaces not within the scope of the parent image (530, 560). Based on the image tree and propagation path back-tracing (620), a received signal quality measure (e.g., power) is determined for each receive location. By comparing the different received signal powers, an optimal receiver unit location is determined. Further, by building further image trees for further transmitter locations, an overall coverage quality can be determined for each transmitter and compared to yield an optimal transmitter location.
    • 一种用于无线通信系统规划的方法包括在第一实施例中,基于覆盖区域内的发射机位置(401)和反射(415)和衍射(425)表面来确定图像树(500),并且限制 图像树以排除需要超过预定数量的反射和/或衍射的较高阶图像的分支,或对应于不在父图像(530,560)的范围内的表面的潜在的子图像。 基于图像树和传播路径回溯(620),为每个接收位置确定接收信号质量测量(例如功率)。 通过比较不同的接收信号功率,确定最佳接收机单元位置。 此外,通过为进一步的发射机位置构建另外的图像树,可以为每个发射机确定总体覆盖质量并进行比较以产生最佳发射机位置。
    • 6. 发明申请
    • METHOD AND APPARATUS FOR MITIGATING THE EFFECTS OF INTERFERENCE IN A WIRELESS COMMUNICATION SYSTEM
    • 减轻干扰在无线通信系统中的作用的方法和装置
    • WO1997048194A1
    • 1997-12-18
    • PCT/US1997003721
    • 1997-03-10
    • MOTOROLA INC.
    • MOTOROLA INC.REED, John, DouglasROZANSKI, Walter, Joseph, Jr.
    • H04B15/00
    • H04W64/00
    • A wireless communication system (200) estimates (303) the location of a mobile station (215) when a degradation in the mobile station's communication occurs due to interference, and stores (305) the location estimate in a database. The database is used to determine the potential for the mobile station (215) within the wireless communication system to receive interference based on its estimated location or its proximity to the known interference location. When the mobile station (215) is within a predetermined distance of the known interference location, the likelihood for the mobile station (215) to experience a degradation in call quality, duration, etc. increases. To migitate the degradation due to interference, an alternate carrier (104) is found and if available, the mobile station's communication is handed off to the alternate carrier (104). Attenuation can also be added in the front-end of the mobile station (215) to mitigate the degradation due to interference.
    • 当由于干扰而发生移动台通信的恶化时,无线通信系统(200)估计(303)移动台(215)的位置,并且将位置估计存储(305)到数据库中。 数据库用于确定无线通信系统内的移动台(215)基于其估计位置或其与已知干扰位置的接近度来接收干扰的可能性。 当移动站(215)处于已知干扰位置的预定距离内时,移动站(215)经历呼叫质量,持续时间等的恶化的可能性增加。 为了迁移由于干扰而导致的恶化,找到替代载波(104),并且如果可用,移动台的通信被切换到替代载波(104)。 还可以在移动台(215)的前端添加衰减,以减轻由于干扰而导致的恶化。
    • 7. 发明申请
    • METHOD FOR WIRELESS COMMUNICATION SYSTEM PLANNING
    • 无线通信系统规划方法
    • WO1996038875A1
    • 1996-12-05
    • PCT/US1996005074
    • 1996-04-12
    • MOTOROLA INC.
    • MOTOROLA INC.REED, John, DouglasTANG, Yuqiang
    • H01Q03/00
    • H04W16/18G01S3/00G01S5/00H01Q1/246H01Q21/29
    • A method for wireless communication system planning includes, in a first embodiment, determining an image tree (500), based on a transmitter location (401) and the reflective (415) and diffractive (425) surfaces within a coverage region, and limiting the image tree to exclude branching for higher order images requiring more than a predetermined number of reflections and/or diffractions, or potential child images corresponding to surfaces not within the scope of the parent image (530, 560). Based on the image tree and propagation path back-tracing (620) a received signal quality measure (e.g., power) is determined for each transmit location. By comparing the different received signal powers, an optimal receiver unit location is determined. Further, by back-tracing for further antenna locations/combinations, and comparing for diversity effects (864, 865), overall coverage qualities can be determined for each antenna combination and compared to yield optimal base diversity antenna locations (867).
    • 一种用于无线通信系统规划的方法包括在第一实施例中,基于覆盖区域内的发射机位置(401)和反射(415)和衍射(425)表面来确定图像树(500),并且限制 图像树以排除需要多于预定数量的反射和/或衍射的较高阶图像的分支,或对应于不在父图像(530,560)的范围内的表面的潜在的子图像。 基于图像树和传播路径回溯(620),为每个发送位置确定接收信号质量测量(例如功率)。 通过比较不同的接收信号功率,确定最佳的接收机单元位置。 此外,通过用于进一步的天线位置/组合的反向跟踪以及对于分集效应进行比较(864,865),可以为每个天线组合确定总体覆盖质量,并进行比较以产生最佳的基站分集天线位置(867)。
    • 8. 发明申请
    • METHOD AND APPARATUS FOR LOCATION FINDING IN A CDMA SYSTEM
    • 在CDMA系统中寻找位置的方法和装置
    • WO1996035958A1
    • 1996-11-14
    • PCT/US1996003797
    • 1996-03-21
    • MOTOROLA INC.
    • MOTOROLA INC.GHOSH, AmitavaREED, John, DouglasROZANSKI, Walter, Joseph, Jr.BUFORD, Kevin, Andrew
    • G01S03/02
    • H04W64/00G01S5/14G01S5/145
    • A method and apparatus for determining the location of a communication unit in a CDMA system includes in a first embodiment, sending a location request via a spread spectrum signal to the subscriber (140), and receiving in return a subscriber signal including a response message showing a receive time of a particular symbol of the base's spreading sequence and a transmit time of a particular symbol of the subscriber's spreading sequence. The base (130), along with other receiving base(s) (140), also receives a predetermined symbol of the subscriber spreading sequence, and each determines a respective receive time of the predetermined symbol. The received information is then processed, along with known base location and delay information, to determine the subscriber location. If insufficient number of bases are capable of communicating with the subscriber, for example due to high loading/interference, auxiliairy bases (121) are also provided for receiving from or transmitting to the subscriber.
    • 用于确定CDMA系统中的通信单元的位置的方法和装置包括在第一实施例中,经由扩展频谱信号向订户(140)发送定位请求,并且接收接收到包括响应消息的用户信号,该响应消息显示 基站扩展序列的特定符号的接收时间和用户扩频序列的特定符号的发送时间。 基站(130)以及其他接收基站(140)也接收用户扩频序列的预定符号,并且各自确定预定符号的相应接收时间。 然后接收的信息与已知的基本位置和延迟信息一起被处理以确定用户位置。 如果足够数量的基站能够与用户进行通信,例如由于高负载/干扰,辅助通信基站(121)也被提供用于从用户接收或传送给用户。
    • 9. 发明申请
    • METHOD AND APPARATUS FOR FREQUENCY ASSIGNMENT FOR A COMMUNICATION UNIT
    • 用于通信单元的频率分配的方法和装置
    • WO1996027267A1
    • 1996-09-06
    • PCT/US1995016896
    • 1995-12-21
    • MOTOROLA INC.
    • MOTOROLA INC.RUPPEL, John, StephenREED, John, Douglas
    • H04Q07/00
    • H04W16/10H04W16/12H04W24/00H04W36/00H04W72/02H04W72/0453
    • A method for improved frequency assignment includes recording handoff statistics for subscriber units handing into and out of a base station (130). The handoff statistics include the IDs of the other base stations (240) involved in the handoff, along with the date and time of the handoff. The statistics of the handoff count are applied based on the number of occurrences within a time period (450), and are used to accept or reject the potential frequency assignments obtained from an assignment algorithm. In one embodiment of this algorithm, using a Q estimate, obtained from residual powers recorded on each frequency (435), a candidate frequency is chosen based on the lowest Q value. This candidate is tested against the handoff statistics, and if rejected, a frequency with the next lowest Q level is tested. This process is repeated until a frequency is assigned.
    • 用于改进频率分配的方法包括记录切换进入和离开基站(130)的用户单元的切换统计。 切换统计包括切换中涉及的其他基站(240)的ID以及切换的日期和时间。 基于在时间段(450)内的出现次数来应用切换计数的统计,并且用于接受或拒绝从分配算法获得的潜在频率分配。 在该算法的一个实施例中,使用从每个频率(435)上记录的残余功率获得的Q估计,基于最低Q值选择候选频率。 该候选人根据切换统计量进行测试,如果被拒绝,则测试具有下一个最低Q级别的频率。 重复此过程直到分配频率。