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31.发明授权Method and apparatus for controlling gain level of a communication channel in a CDMA communication system 有权用于控制CDMA通信系统中的通信信道的增益水平的方法和装置公开(公告)号：US07769079B2
公开(公告)日：2010-08-03
申请号：US11544233
申请日：2006-10-05
申请人： Yu-Cheun Jou
发明人： Yu-Cheun Jou
IPC分类号： H04B1/00
CPC分类号： H04W52/267 , H04L1/0002 , H04W52/24 , H04W52/282
摘要： In a code division multiple access communication system (100), a method and an accompanying apparatus provide for an efficient control of a gain level of a communication channel at various mobility levels. A rate of change of a carrier to interference ratio (C/I) of a communication channel received at a receiver (400) is determined. The gain level of the communication channel may be based on the rate of change of the C/I of the communication channel. A mobility level of the communication channel may be compared to a low mobility threshold corresponding to a low mobility level. If the mobility level meets the low mobility threshold, the gain level of the communication channel may be based on the rate of change of the C/I of the communication channel.
摘要翻译： 在码分多址通信系统（100）中，一种方法和伴随装置提供了在各种移动性级别对通信信道的增益级别的有效控制。 确定在接收机（400）处接收的通信信道的载波与干扰比（C / I）的变化率。 通信信道的增益电平可以基于通信信道的C / I的变化率。 可以将通信信道的移动性水平与对应于低移动性水平的低移动性阈值进行比较。 如果移动性水平满足低移动性阈值，则通信信道的增益水平可以基于通信信道的C / I的变化率。
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公开(公告)号：US20100142479A1
公开(公告)日：2010-06-10
申请号：US12564607
申请日：2009-09-22
申请人： Peter J. Black , Christopher G. Lott , Rashid A. Attar , Yu-Cheun Jou , Jun Ma
发明人： Peter J. Black , Christopher G. Lott , Rashid A. Attar , Yu-Cheun Jou , Jun Ma
IPC分类号： H04W36/00
CPC分类号： H04W52/54 , H04B1/7107 , H04B1/71072 , H04L1/0048 , H04L1/0052 , H04L25/03006 , H04W36/18 , H04W52/08 , H04W52/12 , H04W52/362 , H04W52/40
摘要： Techniques for improving the capacity of a wireless communications system using interference cancellation (IC). In an early decoding and IC aspect, a frame transmitted from a user to a base station may be decoded prior to the entire frame being received by the base station. The remaining portion of the frame may then be re-constructed at the base station prior to its reception, and cancelled from the receive signal to reduce the interference to frames received from other users. In a power control aspect for early decoding and IC, the power control target level at a local base station may be adjusted in response to successfully early decoding a frame, without affecting the overall outer loop power control operation. Further aspects include late decoding techniques for utilizing the IC of other users' signals to improve the probability of decoding a given user's frames, as well as techniques for traffic channel demodulation using channel re-estimation.
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公开(公告)号：US20090303976A1
公开(公告)日：2009-12-10
申请号：US12424030
申请日：2009-04-15
IPC分类号： H04B7/216
CPC分类号： H04W52/44 , H04B2201/709709 , H04L1/0002 , H04L1/0025 , H04L1/0027 , H04L1/0029 , H04L1/0045 , H04L1/1607 , H04L1/1854 , H04L1/1887 , H04L2001/0092 , H04W52/58
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20070165563A1
公开(公告)日：2007-07-19
申请号：US11695840
申请日：2007-04-03
申请人： Edward Tiedemann , Yu-Cheun Jou , Yu-Chuan Lin
发明人： Edward Tiedemann , Yu-Cheun Jou , Yu-Chuan Lin
IPC分类号： H04Q7/00
摘要： Access to a variable rate multiple access system is controlled based upon a current loading. The current loading level is used to determine a transmission rate set point. The transmission rate set point may include a maximum transmission rate and a transmission probability. The transmission rate set point is passed to the remote unit which may access the system. A remote unit with data to send determines a desired transmission data rate. If the desire transmission data rate is equal to or greater than the maximum transmission data rate, the remote unit transmits at the maximum transmission data rate with a probability equal to the transmission probability.
摘要翻译： 基于当前负载来控制对可变速率多址系统的访问。 当前的负载水平用于确定传输速率设定点。 传输速率设定点可以包括最大传输速率和传输概率。 传输速率设定点传递给可能访问系统的远程单元。 具有要发送的数据的远程单元确定期望的传输数据速率。 如果期望传输数据速率等于或大于最大传输数据速率，则远程单元以等于传输概率的概率以最大传输数据速率发送。
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35.发明申请Method and apparatus for controlling gain level of a communication channel in a CDMA communication system 有权用于控制CDMA通信系统中的通信信道的增益水平的方法和装置公开(公告)号：US20070025427A1
公开(公告)日：2007-02-01
申请号：US11544233
申请日：2006-10-05
申请人： Yu-Cheun Jou
发明人： Yu-Cheun Jou
IPC分类号： H04B1/707
CPC分类号： H04W52/267 , H04L1/0002 , H04W52/24 , H04W52/282
摘要： In a code division multiple access communication system (100), a method and an accompanying apparatus provide for an efficient control of a gain level of a communication channel at various mobility levels. A rate of change of a carrier to interference ratio (C/I) of a communication channel received at a receiver (400) is determined. The gain level of the communication channel may be based on the rate of change of the C/I of the communication channel. A mobility level of the communication channel may be compared to a low mobility threshold corresponding to a low mobility level. If the mobility level meets the low mobility threshold, the gain level of the communication channel may be based on the rate of change of the C/I of the communication channel.
摘要翻译： 在码分多址通信系统（100）中，一种方法和伴随装置提供了在各种移动性级别对通信信道的增益级别的有效控制。 确定在接收机（400）处接收的通信信道的载波与干扰比（C / I）的变化率。 通信信道的增益电平可以基于通信信道的C / I的变化率。 可以将通信信道的移动性水平与对应于低移动性水平的低移动性阈值进行比较。 如果移动性水平满足低移动性阈值，则通信信道的增益水平可以基于通信信道的C / I的变化率。
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公开(公告)号：US20060203731A1
公开(公告)日：2006-09-14
申请号：US11399992
申请日：2006-04-07
CPC分类号： H04W28/22 , H04L47/10 , H04L47/14 , H04L47/22 , H04L47/30 , H04W24/00 , H04W48/08 , H04W72/0453 , H04W72/12
摘要： In a communication system capable of variable rate transmission, scheduling of high speed data transmission improves utilization of the forward link and decreases the transmission delay in data communication. Each remote station is assigned one primary code channel for the duration of the communication with a cell. Secondary code channels of various types and transmission capabilities can be assigned by a channel scheduler for scheduled transmission of data traffic at high rates. Secondary code channels are assigned in accordance with a set of system goals, a list of parameters, and collected information on the status of the communication network. Secondary code channels can be grouped into sets of secondary code channels. Data is partitioned in data frames and transmitted over the primary and secondary code channels which have been assigned to the scheduled user.
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公开(公告)号：US07054293B2
公开(公告)日：2006-05-30
申请号：US09905300
申请日：2001-07-13
CPC分类号： H04W52/346 , H04B7/2659 , H04W28/18 , H04W28/22 , H04W36/18 , H04W52/281 , H04W52/34 , H04W52/343 , H04W72/06 , H04W72/1252 , H04W72/1273
摘要： In a communication system capable of variable rate transmission, scheduling of high speed data transmission improves utilization of the forward link and decreases the transmission delay in data communication. Each remote station is assigned one primary code channel for the duration of the communication with a cell. Secondary code channels of various types and transmission capabilities can be assigned by a channel scheduler for scheduled transmission of data traffic at high rates. Secondary code channels are assigned in accordance with a set of system goals, a list of parameters, and collected information on the status of the communication network. Secondary code channels can be grouped into sets of secondary code channels. Data is partitioned in data frames and transmitted over the primary and secondary code channels which have been assigned to the scheduled user.
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38.发明授权Method and system for reducing synchronization time in a CDMA wireless communication system 有权用于减少CDMA无线通信系统中的同步时间的方法和系统公开(公告)号：US06873647B1
公开(公告)日：2005-03-29
申请号：US09435312
申请日：1999-11-05
申请人： Edward G. Tiedemann, Jr. , Daisuke Terasawa , Abhijit G. Shanbhag , Yu-Cheun Jou , Joseph P. Odenwalder , Serge Willenegger , Sandip Sarkar
发明人： Edward G. Tiedemann, Jr. , Daisuke Terasawa , Abhijit G. Shanbhag , Yu-Cheun Jou , Joseph P. Odenwalder , Serge Willenegger , Sandip Sarkar
CPC分类号： H04W56/002 , H04B2201/70701 , H04B2201/709709 , H04J3/0638 , H04J3/0682 , H04J13/0048 , H04J13/18 , H04W48/12
摘要： A method and system for generating forward link channels in a synchronous CDMA base station having a pilot pseudonoise (PN) sequence with a pilot PN sequence offset. In one embodiment the method includes the steps of generating a sync channel including a sync channel message; generating an identification channel including at least the pilot PN sequence offset; and orthogonalizing the sync channel and the identification channel. The identification channel and the sync channel are both transmitted. However, the mobile station may get the pilot PN offset from the identification channel quickly, rather than having to demodulate the entire sync channel message. The identification channel may further include an indication of the phase of the pilot PN sequence, and the epoch of the pilot PN sequence. In one embodiment, the method includes encoding the identification channel using a Golay code.
摘要翻译： 一种用于在具有导频PN序列偏移的导频伪噪声（PN）序列的同步CDMA基站中产生前向链路信道的方法和系统。 在一个实施例中，该方法包括以下步骤：产生包括同步信道消息的同步信道; 生成至少包括导频PN序列偏移的识别信道; 并使同步信道和识别信道正交化。 识别信道和同步信道都被发送。 然而，移动台可以快速地从识别信道获得导频PN偏移，而不必解调整个同步信道消息。 识别信道还可以包括导频PN序列的相位和导频PN序列的时期的指示。 在一个实施例中，该方法包括使用格雷码对识别信道进行编码。
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公开(公告)号：US20050059401A1
公开(公告)日：2005-03-17
申请号：US10969638
申请日：2004-10-20
申请人： Tao Chen , Yu-Cheun Jou
发明人： Tao Chen , Yu-Cheun Jou
CPC分类号： H04W36/0072 , H04W36/14
摘要： The present invention is directed to a digital wireless telecommunications system that includes a plurality of base station of differing spectral capabilities, and a plurality of remote stations capable of transmitting data to and receiving transmissions from the plurality of base stations. The invention herein provides a method for remote station hand-off between base stations of a narrower spectral capacity and base stations of a wider spectral capacity. A method is provided for a wireless telecommunications infrastructure to facilitate a remote station hand-off from a set of narrowband compliant base stations to at least one wideband compliant base station while a remote station is in the coverage area of both types of base stations. Additionally, the invention herein provides remote station apparatus, base station apparatus, and base station controller apparatus for performing the handoff methodology of the present invention.
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公开(公告)号：US06782277B1
公开(公告)日：2004-08-24
申请号：US09409944
申请日：1999-09-30
申请人： Tao Chen , Fuyun Ling , Jack Holtzman , Yu-Cheun Jou , Stein A. Lundby
发明人： Tao Chen , Fuyun Ling , Jack Holtzman , Yu-Cheun Jou , Stein A. Lundby
IPC分类号： H04B138
CPC分类号： H01Q3/2605 , H01Q1/246 , H04B7/0408 , H04B7/0615 , H04B7/0617 , H04B7/086
摘要： A method and apparatus for wireless communications wherein a base station transmits a signal to sending data to a subscriber station through a signal beam that sweeps through the coverage area of the base station. User data addressed to the subscriber station is buffered until the signal beam angle of the signal beam allows efficient transmission. The base station may alter the beam sweep speed or the shape of the beam's radiation pattern over time to maximize system efficiency and capacity.
摘要翻译： 一种用于无线通信的方法和装置，其中基站通过扫描基站的覆盖区域的信号波束发送信号以向用户站发送数据。 寻址到用户站的用户数据被缓冲，直到信号波束的信号波束角允许有效的传输。 基站可以随时间改变光束扫描速度或光束辐射图的形状，以最大化系统效率和容量。
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