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    • 5. 发明授权
    • Method and system for transmit gating in a wireless communication system
    • 无线通信系统中发送门控的方法和系统
    • US06496706B1
    • 2002-12-17
    • US09360139
    • 1999-07-23
    • Yu-Cheun JouAhmed SaifuddinEdward G. Tiedemann, Jr.Brian K. Butler
    • Yu-Cheun JouAhmed SaifuddinEdward G. Tiedemann, Jr.Brian K. Butler
    • H04B700
    • H04W52/54H04B2201/70703H04W52/44
    • The present invention is a novel and improved method and system for communicating a frame of information according to a discontinuous transmit format. In particular, the present invention describes a method of transmitting eighth rate speech or data frames employing transmit gating and energy scaling which simultaneously reduces the battery usage of a variable rate wireless communication device, increases the capacity of the reverse link and provides reliable communication of the eighth rate frames. In the present invention, four methods are presented for transmitting an eighth rate data frame in which half of the frame is gated out and the remaining data is transmitted at nominal transmission energy to accomplish the aforementioned goals. In addition, a power control system in which identifies forward link power control bits that .1have been gated out by the remote station and inhibits adjustment of the transmission energy in response to that identification is disclosed.
    • 本发明是一种用于根据不连续发送格式传送信息帧的新颖和改进的方法和系统。 特别地,本发明描述了一种使用发射门控和能量缩放发送第八速率语音或数据帧的方法,该方法同时降低了可变速率无线通信设备的电池使用,增加了反向链路的容量并提供了可靠的通信 第八速率帧。 在本发明中,提出了四种方法,用于发送第八速率数据帧,其中一半的帧被门控,剩余数据以标称传输能量传输,以实现上述目的。 此外,公开了一种功率控制系统,其中识别出远程站门控的前向链路功率控制比特,并且响应于该识别而禁止发射能量的调整。
    • 8. 发明授权
    • Frame termination
    • 帧终止
    • US08743909B2
    • 2014-06-03
    • US12389211
    • 2009-02-19
    • Peter John BlackRashid Ahmed Akbar AttarYu-Cheun Jou
    • Peter John BlackRashid Ahmed Akbar AttarYu-Cheun Jou
    • H04J3/18
    • H04L1/1671H04L1/0025H04L1/1854H04W28/08H04W52/12H04W52/44H04W52/58
    • Techniques to increase capacity in a wireless communications system. In an aspect, systematic non-transmission, or “blanking,” of minimal-rate frames transmitted in a communications system is provided. In an exemplary embodiment, eighth rate frames in a cdma2000 voice communications system are systematically substituted with null-rate frames carrying zero traffic bits. Provisions are nevertheless made for the transmission of certain designated as “critical” by, e.g., a vocoder. The receiver detects the presence of null rate or non-null rate transmissions and processes the received frames accordingly, including updating an outer loop power control only in response to non-null rate frames. Further techniques for changing the pilot transmission gating pattern to assist the receiver in detecting null rate frames are provided. In another aspect, early termination of a signal transmission over a wireless communications link is provided. In an exemplary embodiment, a base station (BS) transmits power control groups (PCG's) for a frame over a forward link (FL) to a mobile station (MS) until accurate reception of the frame is acknowledged by the MS over a reverse link (RL), possibly before all PCG's of the frame are received over the FL. Possible ACK signaling methods are defined for channels associated with a cdma2000 wireless communications system. In another exemplary embodiment, techniques for reverse link early termination are also provided.
    • 提高无线通信系统容量的技术。 在一方面,提供了在通信系统中传输的最小速率帧的系统非传输或“消隐”。 在示例性实施例中,cdma2000语音通信系统中的第八速率帧被系统地替换为带有零业务位的零速率帧。 然而,对于由例如声码器指定为“关键”的某些设备进行了规定。 接收机检测到零速率或非零速率传输的存在并相应地处理接收到的帧,包括仅响应于非空速率帧来更新外部环路功率控制。 提供了用于改变导频传输门控模式以辅助接收机检测零速率帧的其它技术。 在另一方面,提供了通过无线通信链路的信号传输的提前终止。 在示例性实施例中,基站(BS)通过前向链路(FL)向移动站(MS)发送用于帧的功率控制组(PCG),直到MS通过反向链路确认帧的准确接收 (RL),可能在帧的所有PCG之前都被接收到FL。 针对与cdma2000无线通信系统相关的通道定义了可能的ACK信令方法。 在另一示例性实施例中,还提供了用于反向链路提前终止的技术。
    • 9. 发明授权
    • Apparatus and method for transmit power savings
    • 用于传输功率节省的装置和方法
    • US08416725B2
    • 2013-04-09
    • US12703144
    • 2010-02-09
    • Yu-Cheun JouRashid AttarMark WallaceQiang WuJun Ma
    • Yu-Cheun JouRashid AttarMark WallaceQiang WuJun Ma
    • G08C17/00
    • H04W52/0235H04W52/44H04W52/54Y02D70/1222Y02D70/1242Y02D70/1262Y02D70/142Y02D70/146Y02D70/25
    • An apparatus and method for transmit power savings comprising determining a rate of a previous frame; determining if a current frame is an ALWAYS-ON frame, wherein the current frame temporally succeeds the previous frame; and either ignoring every other reverse link power control (RLPC) bits received on a forward power control subchannel (F-PCSCH) or applying every RLPC bits received on the F-PCSCH. In one aspect, the apparatus and method for transmit power savings comprising using a rate determination algorithm (RDA) to determine a rate of a previous frame; detecting a pilot gating pattern at the end of the previous frame; comparing the rate of the previous frame to a threshold; determining if a current frame is an ALWAYS-ON frame; and declaring the current frame to be a 0 bps frame and puncturing the F-PCSCH to a predetermined frequency.
    • 一种用于发射功率节省的装置和方法,包括:确定先前帧的速率; 确定当前帧是否是一个ALWAYS-ON帧,其中当前帧在时间上成功接收前一帧; 并且忽略在正向功率控制子信道(F-PCSCH)上接收的每个其他反向链路功率控制(RLPC)比特,或者应用在F-PCSCH上接收的每个RLPC比特。 一方面,用于传输功率节省的装置和方法包括使用速率确定算法(RDA)来确定先前帧的速率; 在前一帧结束时检测导频门控模式; 将前一帧的速率与阈值进行比较; 确定当前帧是否是始发帧; 并且将当前帧声明为0bps帧并将F-PCSCH打孔到预定频率。
    • 10. 发明授权
    • Method and apparatus for scrambling information bits on a channel in a communications system
    • 用于对通信系统中的信道上的信息比特进行加扰的方法和装置
    • US08121292B2
    • 2012-02-21
    • US10085581
    • 2002-02-26
    • Yu-Cheun JouYongbin WeiTao Chen
    • Yu-Cheun JouYongbin WeiTao Chen
    • H04L9/00
    • H04L1/0072H04L1/0046H04L1/0068H04L1/0071
    • A control channel in a communication system transmits messages in a one or multiple-slot format. To assure consistency of a message, a content quality indicator is included in the message. Because a terminal receiving the message does not know the number of slots comprising the message, the terminal performs blind format determination by testing hypothesis for all slot formats. Unfortunately, the content of certain control messages results in control messages that appear to be valid in a sense that, the computed CRC is equal to the interpreted CRC. Consequently, the mobile station declares a valid control message, and a false-alarm event occurs. Moreover, the same control messages always result in the same false-alarm events. To prevent such repetitive incorrect determination, the content of the message is scrambled by a time-dependent scrambling sequence before transmission. Re-generating the scrambling sequence, and performing inverse to the scrambling then unscrambles the received message.
    • 通信系统中的控制信道以一个或多个时隙格式发送消息。 为了确保消息的一致性,消息中包含内容质量指示符。 由于接收到该消息的终端不知道包含消息的时隙数,所以终端通过针对所有时隙格式的假设进行盲格式确定。 不幸的是,某些控制消息的内容导致控制消息看起来是有效的,因为所计算的CRC等于解释的CRC。 因此,移动台宣布有效的控制消息,并发生假警报事件。 此外,相同的控制消息总是导致相同的假警报事件。 为了防止这种重复的错误确定,在发送之前,通过时间相关的加扰序列对消息的内容进行加扰。 重新生成加扰序列,并且对加扰进行反相,然后解扰接收到的消息。