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    • 32. 发明授权
    • Radio link management based on retransmission request performance
    • 基于重传请求性能的无线链路管理
    • US07469146B2
    • 2008-12-23
    • US10889554
    • 2004-07-12
    • Anthony C. K. SoongTao WuThawatt GopalYoung C. YoonShiau-He Shawn Tsai
    • Anthony C. K. SoongTao WuThawatt GopalYoung C. YoonShiau-He Shawn Tsai
    • H04Q7/20
    • H04W28/18H04L1/0625H04W52/16H04W52/325H04W52/36H04W52/40
    • A wireless communication network receives packet data transmissions from a mobile station, tracks the occurrence of retransmission requests sent to the mobile station responsive thereto, and modifies the radio link assignments for the mobile station based at least in part on said tracking. For example, a base station controller may be configured to manage the active set of a mobile station based on the number and/or frequency of NACK messages sent by the radio base stations in the mobile station's active set(s) responsive to packet data transmissions from the mobile station. The ACK/NACK response of a radio base station to mobile station transmissions may be used to detect link imbalance, identify poor reverse link channels, etc. The base station controller can add or change radio links based on the ACK/NACK response to improve reverse link performance, trigger voice call handoff, correct link imbalance, etc.
    • 无线通信网络从移动站接收分组数据传输,响应于此而跟踪发送到移动站的重传请求的发生,并且至少部分地基于所述跟踪修改移动台的无线电链路分配。 例如,基站控制器可以被配置为基于移动台的活动组中的无线电基站响应于分组数据传输发送的NACK消息的数量和/或频率来管理移动台的活动集合 从移动台。 无线电基站对移动台传输的ACK / NACK响应可用于检测链路不平衡,识别差的反向链路信道等。基站控制器可以基于ACK / NACK响应来添加或改变无线电链路以改善反向 链路性能,触发语音呼叫切换,链路不平衡等。
    • 34. 发明授权
    • Interference suppression in DS-CDMA systems
    • DS-CDMA系统中的干扰抑制
    • US5790537A
    • 1998-08-04
    • US647731
    • 1996-05-15
    • Young C. YoonHarry Leib
    • Young C. YoonHarry Leib
    • H04B1/7107H04B7/005H04B7/216
    • H04W52/04H04B1/7107
    • A code division multiple access (CDMA) communications system comprises a plurality of CDMA transmitters and at least one reception station coupled together by a communications channel. Each CDMA transmitter encodes a digital signal with a spreading code, each bit of the digital signal being encoded by a spreading code segment comprising a multiplicity of chips. All of the transmitters transmit their respective encoded signals to the reception station asynchronously via the communications channel so as to occupy the same bandwidth. Each receiver receives the combined signals of all of the transmitters and correlates it with a selected one of the spreading code segments to detect the digital signal from the corresponding transmitter. Each receiver uses also the signal-to-noise ratios of detected signals other than its own, with respect to chip delays relative to a reference one of the signals, to suppress multiple access interference (MAI) caused by such other detected signals.
    • 码分多址(CDMA)通信系统包括多个CDMA发射机和由通信信道耦合在一起的至少一个接收站。 每个CDMA发射机用扩展码对数字信号进行编码,数字信号的每一比特由包括多个码片的扩展码段编码。 所有发射机经由通信信道异步地将其各自的编码信号发送到接收站,以便占用相同的带宽。 每个接收机接收所有发射机的组合信号并将其与选定的一个扩展码段相关联,以检测来自相应发射机的数字信号。 每个接收机还相对于相对于参考信号之一的芯片延迟,还使用除了自身以外的检测信号的信噪比来抑制由这种其它检测信号引起的多址干扰(MAI)。
    • 38. 发明申请
    • FEMTO CELL SYSTEM SELECTION
    • FEMTO细胞系统选择
    • US20090247157A1
    • 2009-10-01
    • US12410767
    • 2009-03-25
    • Young C. YoonSrinivasan Balasubramanian
    • Young C. YoonSrinivasan Balasubramanian
    • H04W4/00
    • H04W48/16H04W48/12H04W84/045
    • Systems and methodologies are described that facilitate identifying and/or selecting femto cells in a wireless communication environment. A mobile device can scan an Auxiliary Pilot Channel to detect auxiliary pilot channel information (e.g., a particular Walsh Code, . . . ) sent from a base station. Moreover, the identified auxiliary pilot channel information can be evaluated to detect a characteristic of the base station. For instance, the identified auxiliary pilot channel information can be compared with stored auxiliary pilot channel information (e.g., Walsh Code(s) included in a whitelist, blacklist, . . . ). Moreover, a Synchronization Channel can be read based upon the detected characteristic. Further, a Common Pilot Channel, for example, can be analyzed to search for pseudo-noise (PN) offset(s) reserved for femto cell base stations, and the scan of the Auxiliary Pilot Channel can be initiated in response to detecting at least one reserved PN offset.
    • 描述了有助于在无线通信环境中识别和/或选择毫微微小区的系统和方法。 移动设备可以扫描辅助导频信道以检测从基站发送的辅助导频信道信息(例如,特定沃尔什码,...)。 此外,可以评估所识别的辅助导频信道信息,以检测基站的特性。 例如,所识别的辅助导频信道信息可以与存储的辅助导频信道信息(例如白名单,黑名单中包括的沃尔什码)进行比较。 此外,可以基于检测到的特性来读取同步信道。 此外,例如,可以分析公共导频信道以搜索为毫微微小区基站保留的伪噪声(PN)偏移,并且响应于至少检测到的辅助导频信道的扫描可以被启动 一个保留的PN偏移。