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1.发明授权公开(公告)号：US06516196B1
公开(公告)日：2003-02-04
申请号：US09288364
申请日：1999-04-08
申请人： Tsao-Tsen Chen , Wen-Yi Kuo , Martin Howard Meyers
发明人： Tsao-Tsen Chen , Wen-Yi Kuo , Martin Howard Meyers
IPC分类号： H04Q720
CPC分类号： H04W28/22 , H04W36/18 , H04W72/0453
摘要： The invention provides a novel methodology for increasing the performance of CDMA systems with packet data services by accommodating a variety of users with different rates. The invention operates to increase the spectrum efficiency of a wireless system by using an optimal transmission set of base transceiver stations and assigning proper data rates to efficiently utilize the radio resources. In particular, the invention operates to decrease interference so that the quality of data transmission in CDMA systems is advantageously maintained. Moreover, the invention operates to increase the allocation of bandwidth, particularly for high-speed data services. The invention provides a methodology to evaluate the data rates of different combinations of BTSs that may be in connection with a particular mobile station (MS), allocate an appropriate data rate for the MS and make allocation of system resources more efficient in a multi-user environment.
摘要翻译： 本发明提供了一种用于通过容纳具有不同速率的各种用户来增加具有分组数据服务的CDMA系统的性能的新颖方法。 本发明通过使用基站收发台的最佳传输集合并分配适当的数据速率来有效利用无线电资源来提高无线系统的频谱效率。 具体地，本发明用于减少干扰，从而有利地维持CDMA系统中数据传输的质量。 此外，本发明操作以增加带宽的分配，特别是对于高速数据业务。 本发明提供了一种用于评估可能与特定移动站（MS）相关联的BTS的不同组合的数据速率的方法，为MS分配适当的数据速率并使系统资源的分配在多用户中更有效 环境。
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2.发明授权Method and apparatus for terminating a burst transmission in a wireless system 有权用于在无线系统中终止突发传输的方法和装置公开(公告)号：US06542718B1
公开(公告)日：2003-04-01
申请号：US09408510
申请日：1999-09-30
申请人： Wen-Yi Kuo , Martin Howard Meyers
发明人： Wen-Yi Kuo , Martin Howard Meyers
IPC分类号： H04Q720
摘要： In order to effectively terminate a burst transmission in a wireless system, a method and apparatus determines whether or not a burst transmission from a wireless unit to a base station should be terminated by evaluating at least one criterion related to the operation of the wireless system. Once it is determined that a burst transmission should be terminated, the transmission is terminated by lowering a target signal-to-noise ratio (SIR) by a predetermined amount. By lowering this target SIR, power control bits transmitted from the base station to the wireless unit instruct an extreme decrease in power of the burst transmission and quickly act to terminate the burst transmission.
摘要翻译： 为了有效地终止无线系统中的突发传输，方法和装置通过评估与无线系统的操作有关的至少一个准则来确定是否应该终止从无线单元到基站的突发传输。 一旦确定突发传输应该终止，则通过将目标信噪比（SIR）降低预定量来终止传输。 通过降低该目标SIR，从基站发送到无线单元的功率控制位指示突发传输的功率极度降低，并且迅速地起作用以终止突发传输。
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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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4.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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5.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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公开(公告)号：US06504827B1
公开(公告)日：2003-01-07
申请号：US09215437
申请日：1998-12-18
申请人： Wen-Yi Kuo , Martin Howard Meyers , Xiao Cheng Wu
发明人： Wen-Yi Kuo , Martin Howard Meyers , Xiao Cheng Wu
IPC分类号： H04Q700
CPC分类号： H04B7/26
摘要： The present invention is a method for efficiently utilizing spectrum resources belonging to a wireless communications system in the presence of data channels through a discontinuous data transmission technique. The discontinuous data transmission technique involves the transmission of a flag over a control channel (or some other communication channel) in frame f, wherein the flag would indicate to an intended recipient that a transmitter has a data frame to transmit to the recipient in some future frame f+q. In an embodiment, the transmitter would subsequently transmit the data frame over a data channel (or some other communication channel) in frame f+q if the flag indicated that the data frame was ready to be transmitted. In another embodiment, the transmitter would not transmit the data frame unless the recipient has indicated (via another flag) that the recipient is ready to receive the frame of data from the transmitter.
摘要翻译： 本发明是一种通过不连续数据传输技术在属于无线通信系统的频谱资源存在数据信道的情况下有效利用方法。 不连续数据传输技术涉及在帧f中在控制信道（或某个其他通信信道）上传输标志，其中标志将向预期接收者指示发射机有一个数据帧以在将来发送给接收者 帧f + q。 在一个实施例中，如果标志指示数据帧准备好被发送，则发送器随后将在帧f + q中的数据信道（或某个其他通信信道）上发送数据帧。 在另一个实施例中，发送器将不发送数据帧，除非接收者已经（经由另一个标志）指示接收者准备好从发送器接收数据帧。
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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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8.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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9.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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10.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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