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公开(公告)号：US07006485B2
公开(公告)日：2006-02-28
申请号：US09990468
申请日：2001-11-21
IPC分类号： H04B7/216
摘要： A method for reducing multiple dominant pilots in a CDMA transmission system comprises linking a transceiver element with a nearby base station for transporting signals between the transceiver element and the nearby base station. Transmitting from the transceiver element forward link signals of a nearby sector associated with the nearby base station. An apparatus is also described.
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2.发明授权Method and apparatus for controlling power for variable-rate vocoded communications 有权用于控制可变速率声控通信功率的方法和装置公开(公告)号：US06697343B1
公开(公告)日：2004-02-24
申请号：US09383233
申请日：1999-08-26
IPC分类号： G08C1700
CPC分类号： H04L1/0072 , H04L1/0014 , H04L1/0025 , H04L1/003 , H04L1/0039
摘要： A base station assembles a frame including information bits at a vocoding rate for downlink transmission over a traffic channel as channel bits at a channel rate. The base station places at least one rate-indicating bit at a beginning of the frame for indicating the vocoding rate. The mobile station evaluates the downlink transmission with consideration of the vocoding rate indicated by the at least one rate-indicating bit. The mobile station can determine the vocoding rate by decoding the beginning of the frame to permit power control in less than one frame duration from initial receipt of the frame at the mobile station.
摘要翻译： 一个基站组装一个帧，包括一个声码率的信息比特，用于通过业务信道进行下行链路传输，作为信道速率的信道比特。 基站在帧的开始处放置至少一个速率指示位，用于指示声码率。 考虑到由至少一个速率指示位指示的声码速率，移动站评估下行链路传输。 移动台可以通过解码帧的开始来确定声码速率，从而允许在移动站的初始接收帧的不到一帧的持续时间内进行功率控制。
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3.发明授权Method and system for controlling forward transmit power in a wireless system 有权在无线系统中控制正向传输功率的方法和系统公开(公告)号：US06496531B1
公开(公告)日：2002-12-17
申请号：US09389080
申请日：1999-09-02
IPC分类号： H04B1713
CPC分类号： H04W52/50 , H04W52/12 , H04W52/146 , H04W52/40
摘要： A method and system for controlling down link transmit power during a soft hand-off in a spread-spectrum wireless system supports independent power control of multiple forward channels to reduce fading. For a soft hand-off, a mobile switching center determines if a forward control channel is transmitted from different sectors of base stations than a forward data channel is. The base stations preferably adjust transmit powers of the forward channels grouped into different physical channels by receiving power control data over the allocated reverse power control channels to compensate for fading of the forward channels during a soft hand-off.
摘要翻译： 用于在扩展频谱无线系统中的软切换期间控制下行链路发射功率的方法和系统支持多个前向信道的独立功率控制以减少衰落。 对于软切换，移动交换中心确定前向控制信道是否从正向数据信道的基站的不同扇区发送。 基站优选地通过在分配的反向功率控制信道上接收功率控制数据来调整分组成不同物理信道的前向信道的发射功率，以补偿在软切换期间前向信道的衰落。
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公开(公告)号：US07190688B1
公开(公告)日：2007-03-13
申请号：US09157758
申请日：1998-09-21
IPC分类号： H04B7/216
CPC分类号： H04W52/243 , H04W52/50
摘要： A method and apparatus that permits base stations to adaptively set initial power levels in forward link traffic channels (i.e., base station to mobile unit) based on an interference measure, where the interference measure is the difference between the base station transmitted pilot EC/IO and the mobile unit received pilot EC/IO. The interference measure indicates how much interference is present from other base stations in the mobile unit's locale, mobile receiver noise and other similar sources. Call quality and system capacity are optimized since the initial power level is set in accordance with the interference environment. The method of the invention implements the adaptive setting by extracting the mobile unit received pilot EC/IO from the access message transmitted by the mobile unit. The interference measure is then determined and used by the base station to set the initial power level in the forward link traffic channel.
摘要翻译： 一种允许基站基于干扰测量自适应地将前向链路业务信道（即，基站到移动单元）中的初始功率电平设置的方法和装置，其中干扰测量是基站发射导频E
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5.发明授权Method for controlling power for a communications system having multiple traffic channels per subscriber 有权用于每个用户具有多个业务信道的通信系统的电力控制方法公开(公告)号：US06285886B1
公开(公告)日：2001-09-04
申请号：US09349238
申请日：1999-07-08
IPC分类号： H04B700
CPC分类号： H04W52/265 , H04W52/12 , H04W52/146 , H04W52/283
摘要： A power control method of the invention may be applied to downlink power control, uplink power control, or both to support different quality of service levels for multiple channels per a mobile station. The power control method transmits control data between a base station and a multi-channel mobile station on a single communications channel or sub-channel to minimize or reduce overhead traffic from the control data.
摘要翻译： 本发明的功率控制方法可以应用于下行链路功率控制，上行链路功率控制或两者，以支持每个移动站的多个信道的不同服务质量水平。 功率控制方法在单个通信信道或子信道上在基站和多信道移动站之间发送控制数据，以最小化或减少来自控制数据的开销流量。
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6.发明授权Method and apparatus for inter-frequency hand-off in wireless communication systems 失效无线通信系统中频间切换的方法和装置公开(公告)号：US06181943B2
公开(公告)日：2001-01-30
申请号：US09050535
申请日：1998-03-30
IPC分类号： H04Q738
CPC分类号： H04W36/30
摘要： An apparatus and method which, in a wireless communication system, improve the quality of inter-frequency hand-offs from an existing call connection frequency to a new frequency by minimizing oscillating inter-frequency hand-offs between the existing call connection frequency and the new frequency, and by minimizing redundant and unnecessary tuning and searching at the new frequency. The present invention accomplishes this improvement by adding specific threshold comparison values (or triggers) within existing messages and through more robust data reporting, from the mobile unit to the base station, when tuning and searching is performed. Particularly, two comparative triggers provided by the present invention avoid unnecessary tuning and searching in the new frequency, thus reducing voice degradation and the risk of dropped calls while pilot searching in the current frequency. Additionally, an alternative embodiment of the present invention compares received power in the new frequency to the received power in the original frequency. If the received power in the new frequency does not exceed the received power in the original frequency by a specified hysteresis threshold value, then a search of the new frequency is unnecessary and the mobile unit “retunes” to the original frequency.
摘要翻译： 一种在无线通信系统中通过最小化现有呼叫连接频率与新的呼叫连接频率之间的振荡频间切换来提高从现有呼叫连接频率到新频率的频率间切换质量的装置和方法 频率，并且通过最小化在新频率下的冗余和不必要的调谐和搜索。 本发明通过在现有消息中添加特定的阈值比较值（或触发）并且通过在执行调谐和搜索时从移动单元到基站的更鲁棒的数据报告来实现这一改进。 特别地，本发明提供的两个比较触发器避免了在新频率中的不必要的调谐和搜索，从而在当前频率的导频搜索的同时降低了语音恶化和掉话的风险。 此外，本发明的替代实施例将新频率中的接收功率与原始频率中的接收功率进行比较。 如果新频率的接收功率不以原始频率的接收功率超过指定的滞后阈值，则不需要搜索新的频率，并且移动单元“重新调谐”到原始频率。
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7.发明授权公开(公告)号：US06628958B1
公开(公告)日：2003-09-30
申请号：US09396947
申请日：1999-09-15
IPC分类号： H04Q720
摘要： A base station in a soft handoff adjusts its transmit power level by a first amount if the base station is participating in a soft handoff and by a second amount if the base station is not participating in the soft handoff, i.e. in simplex mode. The first and second amounts are different. In one embodiment of the invention, the adjustment is performed by using a down-step size that is larger in magnitude than an up-step size when the base station is in soft handoff. The transmit power level is then adjusted by the smaller up and larger down step sizes when the base station receives an indication to adjust the transmit power level. The step sizes used when the base station is in simplex mode is larger than the up-step size and smaller than the down step size. In another embodiment, when the base station is in soft handoff, the adjustment is performed by adjusting the transmit power level by the same step size as used during simplex mode when the base station receives an indication to adjust the transmit power level and then reducing the result by a reduction amount. The order of these two steps can be reversed, and the transmit power level can be first reduced by the reduction amount and then adjusted by the same step sizes as used during simplex mode. The reduction amount has a magnitude greater than zero and smaller than the step size. The method of adjusting the base station transmit power level by different amounts based on whether the base station participating in a soft handoff can be used with the method of programming each base station in a soft handoff with a threshold power level to constrain the power transmitted by the base station on the forward link. When the threshold power level is a minimum-threshold power level, each base station maintains its transmit power level at or above the minimum-threshold power level. When the threshold power level is a maximum-threshold power level, each base station maintains its transmit power level at or below the maximum-threshold power level. The threshold power level can be either an adjustable or a fixed threshold power level.
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公开(公告)号：US07852963B2
公开(公告)日：2010-12-14
申请号：US10793013
申请日：2004-03-05
IPC分类号： H04L27/06
CPC分类号： H04L1/20 , H04B7/0617 , H04B17/336 , H04B17/373
摘要： A method and system for predicting a signal power to interference metric for a communication channel in a coverage area of a phase sweep diversity communication system are provided. In the method, a signal power to interference metric for the communication channel is predicted based on a sweep frequency for transmissions in the coverage area. The signal power to interference metric predicted may be a carrier-to-interference ratio or a signal-to-noise plus interference ratio.
摘要翻译： 提供了一种用于预测相位扫描分集通信系统的覆盖区域中的通信信道的信号功率对干扰度量的方法和系统。 在该方法中，基于覆盖区域中的传输的扫描频率预测通信信道的信号功率对干扰度量。 预测的信号功率对干扰度量可以是载波干扰比或信噪比加干扰比。
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9.发明授权Triggering handdowns and handoffs of mobile stations between bordering cells of cellular wireless communication systems 有权在蜂窝无线通信系统的接口小区之间触发移动台的切换和切换公开(公告)号：US06771963B1
公开(公告)日：2004-08-03
申请号：US09135191
申请日：1998-08-17
申请人： Terry Si-Fong Cheng , Ching Huang , Yuen-Yin L. Koo , Shen-De Lin , Carl Francis Weaver , Wen-Yi Kuo
发明人： Terry Si-Fong Cheng , Ching Huang , Yuen-Yin L. Koo , Shen-De Lin , Carl Francis Weaver , Wen-Yi Kuo
IPC分类号： H04Q720
CPC分类号： H04W52/242 , H04W36/30
摘要： A procedure for triggering a handdown or a handoff a mobile station served by a base station of a cellular wireless communication system. A tolerable path loss for signal links between the base station and a mobile station located within the base station's cell, is initially determined. A control signal is radiated at a known transmit power level from the base station over its cell. A receive power level threshold is determined for the control signal for reception by the mobile station, according to the transmit power level and the tolerable path loss. A handoff of the mobile station is triggered after deriving the received power level of the control signal at the mobile station, and determining that the received power level is less than the receive power level threshold. In one embodiment, a mobile station reports to a serving base station only after the former determines that the received power level of a control signal from the base station is less than a threshold level initially provided to the mobile station by the base station. The procedure is applicable, e.g., to base station cells of a first CDMA cellular system which cells border on cells of an analog (AMPS) or a second CDMA cellular system.
摘要翻译： 用于触发由蜂窝无线通信系统的基站服务的移动台的切换或切换的过程。 最初确定基站和位于基站小区内的移动台之间的信号链路的可容忍路径损耗。 控制信号以已知的发射功率电平从基站在其小区上辐射。 根据发射功率电平和容许路径损耗，确定移动台接收控制信号的接收功率电平门限。 在移动站获得控制信号的接收功率电平之后触发移动台的越区切换，并确定接收功率电平小于接收功率电平门限。 在一个实施例中，移动台仅在前者确定来自基站的控制信号的接收功率电平小于由基站最初提供给移动台的阈值电平之前才向服务基站报告。 该过程例如适用于第一CDMA蜂窝系统的基站小区，该小区在模拟（AMPS）或第二CDMA蜂窝系统的小区上边界。
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10.发明授权公开(公告)号：US07224993B2
公开(公告)日：2007-05-29
申请号：US10438105
申请日：2003-05-15
IPC分类号： H04B7/00
摘要： A method of detecting DTX frames in frames received over a communication channel and a power control method are described, where radio link protocol (RLP) information received over the channel may be received, and one or more frames associated with the RLP information may be determined as an erasure or a DTX frame, based on the RLP information. Such determination may be incorporated into outer loop power control algorithms for adjusting a threshold related to a specified quality of service.
摘要翻译： 描述了一种在通过通信信道接收的帧中检测DTX帧的方法和功率控制方法，其中可以接收通过信道接收的无线电链路协议（RLP）信息，并且可以确定与RLP信息相关联的一个或多个帧 作为擦除或DTX帧，基于RLP信息。 这样的确定可以被合并到外环功率控制算法中，用于调整与指定服务质量相关的阈值。
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